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HomeProductsResistorsThrough Hole ResistorsCFR100JR-73-2R2
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CFR100JR-73-2R2 - YAGEO

Manufacturer Part Number
CFR100JR-73-2R2
Manufacturer
Yageo
Allelco Part Number
98D-CFR100JR-73-2R2
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
40,011 pcs available, New & Original
Parts Description
RES 2.2 OHM 5% 1W AXIAL
Package
Axial
Data sheet
CFR100JR-73-2R2.pdf
RoHs Status
ROHS3 Compliant
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Our certification
In stock: 40011
  • Unit Price: $0.032
  • Subtotal: $0.00

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Quantity Unit Price Ext. Price
1+ $0.032 $0.03
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

CFR100JR-73-2R2 Tech Specifications
YAGEO - CFR100JR-73-2R2 technical specifications, attributes, parameters and parts with similar specifications to YAGEO - CFR100JR-73-2R2

Product Attribute Attribute Value
Manufacturer Yageo
Tolerance ±5%
Temperature Coefficient ±350ppm/°C
Supplier Device Package Axial
Size / Dimension 0.177" Dia x 0.453" L (4.50mm x 11.50mm)
Series CFR
Resistance 2.2 Ohms
Power (Watts) 1W
Product Attribute Attribute Value
Package / Case Axial
Package Tape & Reel (TR)
Operating Temperature -55°C ~ 155°C
Number of Terminations 2
Height - Seated (Max) -
Features -
Failure Rate -
Composition Carbon Film

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) Not Applicable
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8533.10.0065

Frequently Asked Questions(FAQ)

What are the thermal stability limits of the CFR100JR-73-2R2 when used in continuous high-temperature applications?
The CFR100JR-73-2R2 exhibits a temperature coefficient of ±350ppm/°C across its -55°C to 155°C operating range. At the upper thermal boundary of 155°C, the 2.2 ohm resistance value can drift approximately ±0.27 ohms from nominal due to temperature effects alone, independent of load cycling. In continuous operation, the carbon film composition exhibits predictable drift rather than catastrophic failure, but designers should account for cumulative tolerance stack when the CFR100JR-73-2R2 operates near rated 1W dissipation in enclosed thermal environments. Applications requiring resistance stability below ±500ppm should evaluate metal film alternatives or derate the CFR100JR-73-2R2 to sub-rated power levels.
How does the CFR100JR-73-2R2 compare to thin-film precision resistors for low-ohm current-sensing circuits?
The CFR100JR-73-2R2 is fundamentally mismatched for precision current sensing due to its ±5% tolerance and ±350ppm/°C coefficient. Thin-film resistors typically achieve ±0.1% tolerance and ±25ppm/°C characteristics, making them 50× more stable thermally and 50× tighter in tolerance. However, the CFR100JR-73-2R2 excels in high-dissipation, non-critical current paths where the 1W power rating and robust carbon film construction provide cost and thermal margin advantages. For circuits where sense accuracy must remain within ±1% across temperature, the CFR100JR-73-2R2 requires active calibration or temperature compensation; passive use without these measures introduces uncontrolled measurement error.
What is the physical footprint impact of selecting the CFR100JR-73-2R2 axial package versus surface-mount alternatives in space-constrained designs?
The CFR100JR-73-2R2 measures 0.177" diameter by 0.453" length (4.50mm × 11.50mm), establishing a linear through-hole footprint that occupies significant vertical space on PCBs with single-sided component population. Equivalent 1W surface-mount resistors (1210 or 2010 packages) offer 40–60% smaller board area per component. However, the CFR100JR-73-2R2's axial through-hole design provides superior mechanical robustness in applications subject to vibration or thermal cycling, eliminates solder reflow profile sensitivity, and simplifies hand assembly and field rework. The CFR100JR-73-2R2 trades horizontal board area efficiency for reliability and assembly flexibility in environments where component density is secondary to mechanical durability.
Why does the CFR100JR-73-2R2 show ±5% tolerance instead of tighter specifications, and what design margins should be applied?
The ±5% tolerance of the CFR100JR-73-2R2 reflects the inherent process variability of carbon film resistor manufacturing—the material composition and film geometry cannot be controlled to tighter specifications without substantial cost escalation. This 1W 2.2 ohm resistor is engineered for applications where voltage drop or power dissipation calculations tolerate ±5% variation natively. In practical circuits, a single CFR100JR-73-2R2 unit may measure anywhere from 2.09 to 2.31 ohms; designs requiring tighter current control should employ parallel matching, series compensation networks, or measurement-based trimming. For a production batch, applying ±10% design margin (treating the CFR100JR-73-2R2 as a ±10% component) ensures acceptable yield when nominal performance falls within the upper tolerance band.
Can the CFR100JR-73-2R2 withstand repeated current surges or inrush conditions beyond its 1W rating?
The CFR100JR-73-2R2 is rated for continuous 1W dissipation under steady-state conditions; its transient surge capability depends on pulse duration and thermal mass. Brief inrush currents—millisecond-scale surges in switch-on transients or fault conditions—allow momentary power dissipation exceeding 1W because the carbon film has limited time to reach destructive temperature before current ceases. However, repeated or frequent surge events (cycles per second) thermally accumulate in the CFR100JR-73-2R2, degrading performance and shortening operational life. For circuits with predictable inrush events (soft-start power supplies, relay coil kickback), the CFR100JR-73-2R2 can tolerate short peaks if the average power remains below 1W and surge frequency stays below approximately 10 cycles per minute; higher stress requires oversized alternatives or active surge suppression external to the resistor.
How does the CFR100JR-73-2R2 perform in moisture-prone or marine environments given its RoHS3 compliance status?
The CFR100JR-73-2R2 carries RoHS3 compliance and is marked as Not Applicable for Moisture Sensitivity Level, indicating the component itself does not absorb moisture during storage or handling. However, RoHS3 compliance addresses lead and hazardous material restrictions, not environmental protection. In marine or high-humidity applications, the CFR100JR-73-2R2's carbon film substrate can absorb surface moisture over extended periods, potentially degrading insulation resistance between the film and radial leads or introducing leakage paths on PCB surfaces. Designs for marine environments should employ conformal coating (acrylic or silicone) over the CFR100JR-73-2R2 and surrounding PCB traces, or select hermetically sealed resistor packages. The bare CFR100JR-73-2R2 is suitable for standard industrial humidity (up to approximately 85% RH, 40°C), but extended salt-spray or 95%+ RH exposure requires protective measures.
What is the noise characteristic of the CFR100JR-73-2R2, and does it matter in audio or instrumentation circuits?
Carbon film resistors, including the CFR100JR-73-2R2, generate thermal noise (Johnson noise) consistent with the Boltzmann equation: approximately 130 nV/√Hz at room temperature for this 2.2 ohm value. In high-gain audio preamplifiers or precision measurement circuits operating at microvolt signal levels, the CFR100JR-73-2R2 introduces a noise floor approximately 6–9 dB higher than metal film resistors. For microphone preamplifier inputs or low-noise instrumentation front ends, metal film 2.2 ohm alternatives reduce noise by 3–4×. Conversely, in power supply return paths or current-sense circuits where signal levels remain in the millivolt to volt range, the CFR100JR-73-2R2's noise is below circuit quantization noise and remains irrelevant. Applications demanding noise floor below 200 nV/√Hz should avoid the CFR100JR-73-2R2 in signal-path positions but may safely use it in bias or reference branches where noise coupling is minimal.
How does the CFR100JR-73-2R2's ±350ppm/°C coefficient interact with precision voltage dividers or analog signal conditioning?
In a voltage divider using identical CFR100JR-73-2R2 units, both the top and bottom resistors track temperature drift together, partially canceling the coefficient effect on the output ratio. If the divider is designed with a 2.2 ohm top resistor (CFR100JR-73-2R2) and a dissimilar bottom resistor, temperature-induced ratiometric error emerges. A 2.2 ohm / 10 ohm divider using a CFR100JR-73-2R2 top and a 1% metal film bottom element will experience approximately ±0.18% output shift over the full -55°C to 155°C range due to the CFR100JR-73-2R2 drift alone. For instrumentation applications requiring ratiometric accuracy better than ±0.5%, matched resistor pairs or deliberate selection of components with similar temperature coefficients becomes necessary. Using a single CFR100JR-73-2R2 in a precision divider without compensation introduces uncontrolled nonlinearity in calibration curves across temperature.
What lead-free solder process parameters should be validated when hand-assembling the CFR100JR-73-2R2?
The CFR100JR-73-2R2 axial leads are tin-plated copper suitable for both eutectic and lead-free solder processes. Lead-free SAC305 (tin-silver-copper) solder requires peak temperatures around 245–260°C, approximately 30°C higher than eutectic. The carbon film body of the CFR100JR-73-2R2 can tolerate short-duration exposure to 280°C without degradation, but sustained heating above 260°C or repeated reflow cycles should be avoided. Hand-soldering with a soldering iron typically reaches localized temperatures of 300–320°C at the joint; limiting dwell time to 3–5 seconds per lead minimizes thermal stress on the CFR100JR-73-2R2 resistor body. If the CFR100JR-73-2R2 is already soldered and rework is required, preheating the board to 100–120°C before desoldering reduces thermal shock and mechanical stress on the leads.
How does load-life aging affect the CFR100JR-73-2R2's resistance value over extended operation?
The CFR100JR-73-2R2 experiences slow resistance drift under prolonged thermal stress at rated or near-rated power. Long-term aging (typically 1000 hours at 70% rated power and 70°C ambient) introduces approximately ±2–3% additional drift beyond the initial ±5% tolerance. Over a 5–10 year operational life at continuous 0.8–1.0W dissipation, a CFR100JR-73-2R2 can degrade by an additional 3–5%, resulting in cumulative tolerance stack of ±8–10%. This aging is gradual and nonlinear; the most significant shift occurs in the first 500–1000 hours. Applications relying on stable current limiting or voltage drop calibration should perform periodic recalibration or use active compensation if the CFR100JR-73-2R2 is in service for more than 3–5 years. For non-critical bulk or ballast resistor roles, aging is typically negligible compared to application tolerance budgets.
Is the CFR100JR-73-2R2 suitable for energy harvesting or ultra-low-power circuit applications?
The CFR100JR-73-2R2 is fundamentally designed for steady-state power dissipation and has no advantage in ultra-low-power applications. Its 1W rating, ±350ppm/°C temperature coefficient, and ±5% tolerance offer no benefit in circuits operating at microwatts or nanowatts. Additionally, the CFR100JR-73-2R2's carbon film exhibits leakage current on the order of microamps under applied voltage, which is excessive noise in energy-scavenging circuits. Energy harvesting circuits requiring minimal parasitic current and maximum impedance matching benefit from thin-film or metal oxide resistors with lower leakage and lower temperature coefficients. The CFR100JR-73-2R2 should be reserved for conventional power distribution, current limiting, and load impedance roles where its 1W capability and cost-effectiveness are leveraged; it introduces unnecessary performance compromise in low-power analog frontend design.
What is the voltage rating of the CFR100JR-73-2R2, and are there derating factors for high-altitude or high-frequency applications?
The CFR100JR-73-2R2 datasheet does not explicitly specify a voltage rating, but typical carbon film resistors are rated for 250V working voltage and 500V surge voltage. For a 2.2 ohm value, peak current at 250V would be approximately 114A, far exceeding practical circuit conditions. Working voltage limits are rarely the limiting factor for 2.2 ohm low-value resistors; instead, power dissipation (1W) and thermal stress are the primary constraints. At high altitude (above 3000m), air cooling efficiency decreases, requiring derate of continuous power to approximately 0.7–0.8W for the CFR100JR-73-2R2 to maintain the same steady-state temperature. At high frequencies (above 10MHz), skin effect and dielectric losses in the carbon film introduce parasitic impedance, but for most practical circuits, these effects remain negligible. The CFR100JR-73-2R2 functions adequately to approximately 100MHz in non-critical impedance roles; precision RF or microwave circuits should use wire-wound or thin-film alternatives.
How does the CFR100JR-73-2R2 respond to short-term overcurrent or ESD discharge events?
The CFR100JR-73-2R2 has limited inherent ESD protection; its carbon film can be damaged by electrostatic discharge in the kilovolt range. A 1–5kV ESD strike applied across the CFR100JR-73-2R2 leads can puncture the film or create localized hotspots, resulting in permanent resistance shift or open circuit failure. For circuits handling ESD-sensitive signals, the CFR100JR-73-2R2 should not be positioned as a primary protection element; dedicated TVS diodes or MOV components provide superior surge suppression. Overcurrent events—transient currents 10–50× the normal operating level—can thermally stress the CFR100JR-73-2R2 carbon film, degrading performance or causing thermal runaway if accompanied by voltage swings. In unprotected applications subject to fault injection or ESD, an external fuse, series-connected protective resistor, or active crowbar circuit should be employed upstream of the CFR100JR-73-2R2 to prevent catastrophic failure.

Parts with Similar Specifications

The three parts on the right have similar specifications to YAGEO CFR100JR-73-2R2

Product Attribute CFR100JR-73-2R CFR100JR-73-2K2 CFR100JR-73-2R4 CFR100JR-73-2R7
Part Number CFR100JR-73-2R CFR100JR-73-2K2 CFR100JR-73-2R4 CFR100JR-73-2R7
Manufacturer YAGEO YAGEO YAGEO YAGEO
Composition - - - -
Power (Watts) - - - -
Failure Rate - - - -
Number of Terminations - - - -
Size / Dimension - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Height - Seated (Max) - - - -
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Series - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Tolerance - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Features - - - Simultaneous Sampling
Resistance - - - -
Temperature Coefficient - - - -

CFR100JR-73-2R2 Datasheet PDF

Download CFR100JR-73-2R2 pdf datasheets and YAGEO documentation for CFR100JR-73-2R2 - YAGEO.

Datasheets
CFR Series Datasheet.pdf

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CFR100JR-73-2R2 Image

CFR100JR-73-2R2

YAGEO
98D-CFR100JR-73-2R2

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