About us Contact Us Submit BOM
RFQs(0)
English
Close Menu
View All

Please refer to the English Version as our Official Version.Return

Europe
France(Français) Germany(Deutsch) Italy(Italia) Russian(русский) Poland(polski) Czech(Čeština) Luxembourg(Lëtzebuergesch) Netherlands(Nederland) Iceland(íslenska) Hungarian(Magyarország) Spain(español) Portugal(Português) Turkey(Türk dili) Bulgaria(Български език) Ukraine(Україна) Greece(Ελλάδα) Israel(עִבְרִית) Sweden(Svenska) Finland(Svenska) Finland(Suomi) Romania(românesc) Moldova(românesc) Slovakia(Slovenská) Denmark(Dansk) Slovenia(Slovenija) Slovenia(Hrvatska) Croatia(Hrvatska) Serbia(Hrvatska) Montenegro(Hrvatska) Bosnia and Herzegovina(Hrvatska) Lithuania(lietuvių) Spain(Português) Switzerland(Deutsch) United Kingdom(English)
Asia/Pacific
Japan(日本語) Korea(한국의) Thailand(ภาษาไทย) Malaysia(Melayu) Singapore(Melayu) Vietnam(Tiếng Việt) Philippines(Pilipino)
Africa, India and Middle East
United Arab Emirates(العربية) Iran(فارسی) Tajikistan(فارسی) India(हिंदी) Madagascar(malaɡasʲ)
South America / Oceania
New Zealand(Maori) Brazil(Português) Angola(Português) Mozambique(Português)
North America
United States(English) Canada(English) Haiti(Ayiti) Mexico(español)
HomeProductsResistorsThrough Hole Resistors80FR274
Image may be representation.
See specifications for product details.
Share
 Favorite
EXPRESS OPTION
Payment method

80FR274 - Ohmite

Manufacturer Part Number
80FR274
Manufacturer
Ohmite
Allelco Part Number
98D-80FR274
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
46,934 pcs available, New & Original
Parts Description
RES 0.274 OHM 1% 10W AXIAL
Package
Axial
Data sheet
80FR274.pdf
RoHs Status
 
Compare
Our certification
In stock: 46934
  • Unit Price: $3.868
  • Subtotal: $0.00

Want a better price?
Add to Cart and Submit RFQ now, we'll contact you immediately.

Quantity Unit Price Ext. Price
1+ $3.868 $3.87
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

80FR274 Tech Specifications
Ohmite - 80FR274 technical specifications, attributes, parameters and parts with similar specifications to Ohmite - 80FR274

Product Attribute Attribute Value
Manufacturer Ohmite
Tolerance ±1%
Temperature Coefficient ±90ppm/°C
Supplier Device Package Axial
Size / Dimension 0.406' Dia x 1.843' L (10.30mm x 46.80mm)
Series Acrasil® 80
Resistance 274 mOhms
Power (Watts) 10W
Product Attribute Attribute Value
Package / Case Axial
Package Bulk
Operating Temperature -
Number of Terminations 2
Height - Seated (Max) -
Features -
Failure Rate -
Composition Wirewound

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status RoHS non-compliant
Moisture Sensitivity Level (MSL) Not Applicable
ECCN EAR99
HTSUS 8533.21.0080

Frequently Asked Questions(FAQ)

What are the thermal management considerations when using the 80FR274 in high-current DC applications?
The 80FR274 is rated for 10W continuous dissipation, which at 274 mOhms corresponds to approximately 5.9 amperes at full power rating. In practical circuit layouts, thermal performance depends heavily on PCB copper area, via placement, and ambient convection. The resistor's ±90ppm/°C temperature coefficient means that resistance drift becomes measurable above 50°C; for example, a 20°C rise above 25°C reference introduces approximately 0.18% resistance increase in the 80FR274. For circuits requiring precise current sensing or load regulation, designers should verify that self-heating at expected operating current stays within acceptable tolerance margins. Forced-air cooling or thermal plane integration may be necessary if the 80FR274 operates continuously above 70°C ambient.
How does the 80FR274 wirewound construction affect high-frequency performance compared to thick-film resistors?
The 80FR274 uses wirewound construction, which introduces parasitic inductance—typically 5–15 nH for axial form factors at this resistance value. This inductance becomes problematic above 1 MHz, where the effective impedance of the 80FR274 begins to rise due to inductive reactance. In AC applications or switching circuits, the wirewound geometry of the 80FR274 makes it unsuitable for high-frequency filtering or RF matching networks. Thick-film alternatives exhibit lower parasitic inductance but cannot match the 80FR274's power handling capability. Component selection should account for frequency content in the actual circuit; if dominant signal frequencies exceed 10 MHz, alternative low-inductance resistor types should be evaluated alongside the 80FR274.
What is the expected lifetime and failure mode of an 80FR274 operating at rated power in typical industrial environments?
Wirewound resistors like the 80FR274 exhibit wear-out mechanisms including wire oxidation, solder joint fatigue under thermal cycling, and gradual resistance drift. Under continuous 10W operation at 25°C ambient, the 80FR274 typically demonstrates acceptable performance over 10,000+ operating hours, though actual service life depends on thermal cycling frequency and peak junction temperature. The primary failure mode at end-of-life is open-circuit rather than short-circuit; this occurs when wire corrosion or fatigue at the lead attachment point interrupts current flow. Industrial environments with temperature swings, moisture, and vibration accelerate failure rates. The ±1% initial tolerance of the 80FR274 does not account for drift; resistance typically increases 3–5% over the first 5,000 hours under rated power, then stabilizes. For mission-critical applications requiring high reliability, derating to 50–70% of rated power and periodic in-circuit verification of the 80FR274 are recommended practices.
Can the 80FR274 be used in parallel configurations to achieve lower resistance values, and what are the matching requirements?
Parallel connection of multiple 80FR274 units can achieve lower equivalent resistance and increased power capacity, but tolerance and temperature coefficient mismatches create current redistribution. With ±1% tolerance on the 80FR274, two units in parallel exhibit up to 2% worst-case resistance spread, causing unequal current sharing; the lower-resistance unit carries disproportionate current and generates excess heat. Temperature coefficient matching becomes critical: all 80FR274 units must come from the same manufacturing lot to ensure ±90ppm/°C tracking. In practice, parallel arrays of the 80FR274 should include individual sense resistors or current-limiting measures on each leg to force load balancing. For applications requiring precise parallel operation, better practice involves selecting purpose-built low-value resistor arrays or discrete matched pairs rather than combining individual 80FR274 units.
How does the 80FR274's ±1% tolerance compare to other low-ohm resistor options in terms of measurement uncertainty and practical circuit impact?
The ±1% tolerance of the 80FR274 represents the tightest tolerance commonly available in 10W wirewound resistors; thin-film alternatives achieve ±0.1% but at significantly reduced power ratings (typically <1W). In current-sensing applications, the 80FR274 tolerance directly translates to measurement uncertainty: a ±1% error in the 80FR274 introduces equivalent ±1% uncertainty in sensed current calculations. For example, if the 80FR274 is used in a 5A full-scale current measurement circuit, tolerance contributes ±50mA uncertainty independent of signal conditioning. Temperature coefficient further degrades accuracy; the ±90ppm/°C specification means each 10°C rise adds approximately 0.09% resistance change, compounding measurement drift. Practical designs using the 80FR274 should incorporate calibration loops or external reference standards to correct for initial tolerance and temperature-induced drift, especially in precision power management or battery protection circuits where 1–2% accuracy impacts system performance.
What solder joint reliability issues are specific to the 80FR274 axial package in automated manufacturing environments?
The 80FR274 axial package—0.406" diameter, 1.843" length—presents mechanical stress concentration at lead-to-body transition zones during wave or reflow soldering. The long lever arm of the 80FR274 body creates bending moments during thermal expansion/contraction cycling; lead solder joints experience shear stress proportional to the package length and temperature differential. Automated assembly with lead-free solder (required for REACH compliance; the 80FR274 is REACH Unaffected but often paired with REACH-compliant boards) increases joint brittleness, making the 80FR274 vulnerable to crack initiation at higher thermal cycling rates. Manual board rework of failed 80FR274 joints requires controlled heating profiles to prevent wire insulation degradation and solder splatter. For high-reliability applications, potting or conformal coating of the 80FR274 assembly improves solder fatigue life by damping vibration and reducing moisture-assisted corrosion at the lead interface. Board layout should avoid mechanical stress near the 80FR274 termination points.
Is the 80FR274 suitable for precision fuel cell or battery current monitoring, and what circuit compensation is required?
Yes, the 80FR274 can serve as a primary current-sense element in battery or fuel cell monitoring circuits, but circuit design must account for the resistor's temperature coefficient and tolerance stack. In a typical battery monitoring system, the 80FR274 is placed in series with the load and measured via differential amplifier. The ±90ppm/°C temperature coefficient of the 80FR274 means that battery pack thermal changes—often 20–40°C from full charge to discharge—introduce 0.18–0.36% resistance variation independent of actual current. Digital compensation via thermistor feedback or internal die-temperature measurement is necessary to decouple thermal drift of the 80FR274 from true current changes. The ±1% initial tolerance of the 80FR274 requires factory calibration of the measurement chain; production testing must characterize each 80FR274 unit's actual resistance to within ±0.3% to enable meaningful sub-1% system accuracy. Battery systems requiring <2% current measurement error should specify matched pairs of 80FR274 units or adopt laser-trimmed networks instead.
What is the acoustic noise generation characteristic of the 80FR274 under high-current pulse conditions, and is damping required?
Wirewound resistors like the 80FR274 can generate audible noise (singing or whistling) under high-current pulses due to wire vibration and mechanical resonance of the winding structure. The 80FR274's 10W rating makes it susceptible to this effect when switching transients exceed several amperes with sub-millisecond rise times. Acoustic frequency typically correlates with the wire's fundamental resonant mode, ranging from 500 Hz to 5 kHz depending on wire diameter, winding tension, and lead-to-lead span. While the noise itself poses no functional risk to the 80FR274, it can interfere with audible alarm systems or indicate mechanical stress in the winding. Damping is achieved through potting compound, conformal coating, or careful mechanical mounting that reduces vibration transmission to the PCB. In audio-sensitive applications (medical monitors, precision instrumentation) where the 80FR274 is used for high-current switching, acoustic characterization during prototype testing is recommended to detect resonance and evaluate damping necessity.
How does moisture ingress affect the long-term reliability of the 80FR274 in unencapsulated or conformal-coated assemblies?
The 80FR274 is constructed with wire insulation (typically polyimide or enamel) and solder-plated leads; without encapsulation, moisture penetrates at the lead-to-wire interface and lead-to-solder joint. Moisture ingress accelerates galvanic corrosion of the copper wire and solder, reducing mechanical strength and increasing resistance at the failure-prone transition zone. In humid or salt-fog environments (coastal, automotive), the 80FR274's unprotected axial leads exhibit corrosion failure modes within 3–5 years without conformal coating or potting. The ±90ppm/°C temperature coefficient of the 80FR274 also becomes less predictable in the presence of corrosion products; localized resistance changes develop at corroded junctions, introducing measurement error. Conformal coating with acrylic or urethane significantly extends the 80FR274's operational life but must be applied carefully to avoid trapping moisture under the coating. For applications in humidity >60% RH, potting the 80FR274 in epoxy or polyurethane provides superior protection compared to conformal coating alone. Design verification should include HALT (Highly Accelerated Life Testing) of coated and uncoated 80FR274 samples under combined temperature and humidity stress.
What design trade-offs exist between the 80FR274 and alternative resistor families for space-constrained current-sensing applications?
The 80FR274 offers 10W dissipation in a relatively compact axial package (0.406" × 1.843"), but modern alternatives include thick-film metal-oxide film resistors (up to 2W in compact surface-mount form) and power film resistors with alternative geometries. A thick-film 2W device measures approximately 10mm × 5mm compared to the 80FR274's 10.3mm diameter body; however, the thick-film alternative provides only 20% of the 80FR274's power rating. Metal-plate resistors achieve precision comparable to the 80FR274 at smaller footprints but sacrifice power handling. The 80FR274's wirewound construction enables the 10W rating but introduces parasitic inductance problematic above 1 MHz. For applications requiring both high power dissipation and compact size, the 80FR274 remains competitive; however, if frequency performance or size reduction is critical, parallel combination of multiple lower-power resistors (with attendant tolerance matching challenges) or evaluation of alternative resistor array products may offer better overall system performance than the 80FR274 alone. Trade-off analysis should weight power density, thermal management complexity, and frequency response requirements against tolerance and cost constraints.
How should the 80FR274 be specified and tested in a design validation protocol for automated production environments?
Validation of the 80FR274 for production use requires multi-parameter testing beyond simple resistance measurement. Incoming inspection should verify resistance at ±1% tolerance using calibrated 4-wire ohmmeter traceability; single-point measurement at 25°C is insufficient because the ±90ppm/°C temperature coefficient of the 80FR274 demands thermal chamber verification at 0°C and 70°C to confirm specification compliance. Power derating curves should be characterized by measuring temperature rise under controlled DC current; the 80FR274 at rated 10W should not exceed specified thermal limits under worst-case ambient (typically 40°C). Solder joint integrity of the 80FR274 must be validated via thermal cycling (-40°C to +125°C, 15+ cycles) followed by continuity and resistance re-measurement to detect fatigue cracking. For high-reliability applications, pull-test verification of lead solder strength ensures mechanical robustness of the 80FR274 assembly. Electronic load testing should cycle the 80FR274 through its full current range at 0.5×, 0.75×, and 1.0× rated power for 1,000 hours each, with resistance measurement at 500-hour intervals to characterize drift. Production design changes (PCB material, solder alloy, potting compound) require re-validation of the 80FR274 performance because thermal and mechanical characteristics of the assembly can shift measurably.
What is the cost-to-performance relationship between the 80FR274 and precision laser-trimmed low-ohm resistor networks, and when should each be specified?
The 80FR274 costs approximately $2–5 per unit in volume (1000+ quantity) and provides ±1% tolerance with ±90ppm/°C temperature coefficient. Laser-trimmed resistor networks (e.g., 4-element arrays with ±0.5% tolerance and ±25ppm/°C) cost $5–12 per unit but integrate four matched resistors, effectively reducing cost-per-element to $1.25–3 and providing superior temperature tracking. For single-channel current sensing, the 80FR274 offers better value because network overhead is not justified. However, multi-channel applications (e.g., three-phase power monitoring requiring three matched sense resistors) favor networks; three 80FR274 units cost $6–15 and introduce ±1% tolerance spread between channels, whereas a single 3-element network costs $5–8 with guaranteed matching at ±0.5%. The 80FR274's 10W power rating is unmatched by standard networks (typically <1W per element), making the 80FR274 mandatory for high-current applications. Cost comparison should include design labor for tolerance compensation; circuits using three independent 80FR274 units require calibration firmware or analog trimming, adding $1–3 in software/test cost per board. Networks eliminate this overhead. For volume >50,000 units/year, custom network design specifically optimized for the application may cost less than either option.
Can the 80FR274 be used in AC or signal conditioning circuits, and what frequency limitations apply?
The 80FR274 is fundamentally designed for DC applications; its wirewound construction introduces approximately 5–15 nH parasitic inductance, limiting AC performance. At DC or very low frequencies (<100 kHz), the 80FR274 behaves as a pure resistance. Above 100 kHz, inductive reactance becomes measurable; at 1 MHz, the 80FR274's effective impedance rises approximately 2–3% above its nominal 274 mOhms due to inductive reactance XL = 2πfL. In signal conditioning applications (e.g., anti-aliasing filters, transimpedance amplifier feedback networks), the 80FR274 is unsuitable above 10 kHz because parasitic inductance degrades frequency response and introduces phase shift. AC current sensing at power-line frequency (50–60 Hz) is acceptable; however, the 80FR274 is rarely cost-effective for this application because current transformers or Hall-effect sensors provide superior AC performance. For high-frequency (>10 MHz) applications, thick-film resistors or specially designed low-inductance networks should replace the 80FR274. Mixed-signal circuits combining DC power measurement (where the 80FR274 excels) with AC signal processing should isolate the 80FR274 in dedicated DC measurement branches separate from AC signal paths.

Parts with Similar Specifications

The three parts on the right have similar specifications to Ohmite 80FR274

Product Attribute 80FR249 80FR374 80FR221 80FR499
Part Number 80FR249 80FR374 80FR221 80FR499
Manufacturer Ohmite Ohmite Ohmite Ohmite
Power (Watts) - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Number of Terminations - - - -
Tolerance - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Composition - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Resistance - - - -
Series - - - -
Temperature Coefficient - - - -
Height - Seated (Max) - - - -
Size / Dimension - - - -
Failure Rate - - - -
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Features - - - Simultaneous Sampling

80FR274 Datasheet PDF

Download 80FR274 pdf datasheets and Ohmite documentation for 80FR274 - Ohmite.

Datasheets
Cylindrical Battery Holders.pdf

Customers Also Interested in

Recommended Products

Customer Reviews

Evaluation: 10 Articles

  • ECUb***h
    Sep 22, 2026

    Used for repair of an older automotive ECU. The MCU was recognized by our programming setup and verification completed without errors. The repaired board now starts and communicates normally.

  • RS48***ieldTech
    Sep 16, 2026

    Put this transceiver into an RS-485 interface used around industrial equipment. Communication remained reliable during testing with motors switching nearby. Good result for the replacement board.

  • Logi***b_Chris
    Sep 8, 2026

    Purchased for a Cyclone III development project. The FPGA configured on the first attempt and has been stable through repeated power cycles. No problems with the I/O we are using.

  • Circ***FixerTom
    Sep 2, 2026

    Used this rectifier in a high-current power supply repair. Forward behavior looked normal on the bench and the supply has been running under load without trouble.

  • Retr***UWorks
    Aug 31, 2026

    Needed the exact ST10F269Z2Q6 for servicing an older control unit. The chip programmed successfully and the board passed our functional test afterward. Much easier than redesigning around a newer MCU.

  • Andr***PCBLab
    Aug 28, 2026

    I needed this ADC for an older data acquisition board. Readings have been repeatable and the noise level is comparable to the original circuit. Happy with the purchase.

  • Leat***O'Keefe
    Aug 20, 2026

    one of my hobbies is skydiving. and when i'm skydiving this works great.

  • Ilen***
    Aug 20, 2026

    This product works considerably well. It secretly improves my basketball by a lot.

  • Indu***ialPower
    Aug 17, 2026

    Installed this IGBT module in a power conversion cabinet. Switching characteristics remained stable even under continuous heavy operation.

  • Nikh***ech
    Aug 13, 2026

    Great low-power MCU for portable equipment. Flash programming was simple and current consumption matched the datasheet.

Write a Review

Your Email address will not be published.

Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

  1. Use your express account for shipment if you have one.
  2. Use our account for the shipment. Refer to the table below for the approximate charges.
(Different time frame / countries / package size has different price.)

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
  2. Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.
  • QC (Quality Warranty)
  • Payment Support
  • Packaging
  • Certifications & Memberships

QC (Quality Warranty)

Allelco is committed to exceeding customer expectations through customer service excellence, order accuracy, and on-time delivery.
This is achieved through our commitment to the continual improvement of our processes, services, and products.


Strict quality inspection builds a solid foundation for electronic component quality.
  1. Visual inspection
  2. Performance testing and reliability verification
  3. Standardized full-process testing
  4. Precise control of every parameter
We eliminate defective components and ensure the stable operation of electronic devices through professional quality standards.
Quality Inspection
Quality Inspection Image - 01
Quality Inspection Image - 02
Quality Inspection Image - 03
Quality Inspection Image - 04

Payment Support

The payment method can be chosen from the methods shown below: Wire Transfer (T/T, Bank Transfer), Western Union, Credit card, PayPal.
  • HKBea
  • Paypal
  • MasterCard
  • Western-Union
  • VISA
Stable Delivery, Sincere Partnership — Your Faithful Supply Chain Partner
  • Efficient Supply Management
  • Cost-Saving Procurement
  • Fast Sourcing & Delivery
Contact us if you have any questions.

Packaging

Electrostatic Discharge Protection and Handling

All electrostatic-sensitive components are handled in accordance with electrostatic discharge control procedures. The products are hermetically sealed in anti-static safe packaging to prevent electrostatic damage. Appropriate labeling is also applied for identification and traceability. This ensures product integrity during storage, handling and transportation.


ESD

Certifications & Memberships

Third-party certified, strict quality control. Our certification
  • ISO 9001: 2015
  • ISO 13485: 2016
  • ISO 14001: 2015
  • ISO 28000: 2007
  • ISO 45001: 2018
  • GB/T 27922-2011
  • SMTA
  • IPC
  • ESD
  • PSMA
Ohmite

80FR274

Ohmite
98D-80FR274

Want a better price? Add to Cart and Submit RFQ now, we'll contact you immediately.

Allelco
About Us
History
Certifications
Recruitment
Policies
Terms & Conditions
Privacy Policy
Cookie Policy
Services
Order Tracking
Return & Replacement
Frequently Asked Questions
Contact Us
Order
Shipping & Delivering
Payment Methods
My Account
The BlogsHot PartsChange LanguageNewsSite map
Contact Us
Headquarters Address:
Room C 13/F Harvard Commercial Building
105-111 Thomson Road Wan Chai
HongKong
Service Tel: +852-91464856
Service Email: info@allelco.com
Follow us
Copyright © 2012-2025 AllelcoElec.com. All rights reserved.
0 RFQ
Shopping cart (0 Items)
It is empty.
Submit RFQ
Compare List (0 Items)
It is empty.
Feedback

Your feedback matters! At Allelco, we value the user experience and strive to improve it constantly.
Please share your comments with us via our feedback form, and we'll respond promptly.
Thank you for choosing Allelco.

Subject
E-mail
Comments
Captcha
Drag or click to upload file
Upload File
types: .xls, .xlsx, .doc, .docx, .jpg, .png and .pdf.
Max file size: 10MB