Please refer to the English Version as our Official Version.

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)~~

Home Products Resistors Chip Resistor - Surface Mount~~RS73G1JTTD1051B~~

Image may be representation.
See specifications for product details.

~~Favorite~~

EXPRESS OPTION

Payment method

RS73G1JTTD1051B - KOA Speer Electronics, Inc.

Name: KOA Speer Electronics, Inc. RS73G1JTTD1051B
Brand: KOA Speer Electronics, Inc.
SKU: RS73G1JTTD1051B
Price: 0.082 USD
Availability: InStock
Rating: 5 (5 reviews)

Manufacturer Part Number: RS73G1JTTD1051B

Manufacturer: KOA Speer Electronics, Inc.

Allelco Part Number: 98D-RS73G1JTTD1051B

Warranty: 1 Year Allelco Warranty - Find out more

Stock Status:: 41,910 pcs available, New & Original

Parts Description: RES 1.05K OHM 0.1% 1/5W 0603

Package: 0603

Data sheet: RS73G1JTTD1051B.pdf

Datasheets
RS73 Type Datasheet.pdf

HTML Datasheet
RS73 Type Datasheet.pdf

RoHs Status: ROHS3 Compliant

~~Compare~~

Our certification

In stock: 41910

Unit Price: $0.082
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+	$0.082	$0.08

The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

RS73G1JTTD1051B Tech Specifications
KOA Speer Electronics, Inc. - RS73G1JTTD1051B technical specifications, attributes, parameters and parts with similar specifications to KOA Speer Electronics, Inc. - RS73G1JTTD1051B

Product Attribute	Attribute Value
Manufacturer	KOA Speer Electronics, Inc.
Tolerance	±0.1%
Temperature Coefficient	±50ppm/°C
Supplier Device Package	0603
Size / Dimension	0.063" L x 0.031" W (1.60mm x 0.80mm)
Series	RS73
Resistance	1.05 kOhms
Ratings	AEC-Q200
Power (Watts)	0.2W, 1/5W

Product Attribute	Attribute Value
Package / Case	0603 (1608 Metric)
Package	Tape & Reel (TR)
Operating Temperature	-55°C ~ 155°C
Number of Terminations	2
Height - Seated (Max)	0.022" (0.55mm)
Features	Automotive AEC-Q200, Moisture Resistant
Composition	Thick Film
Base Product Number	RS73G1J

Environmental & Export Classifications

ATTRIBUTE	DESCRIPTION
RoHs Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected
ECCN	EAR99
HTSUS	8533.21.0030

Frequently Asked Questions(FAQ)

What makes the RS73G1JTTD1051B suitable for automotive applications compared to standard 0603 resistors?: The RS73G1JTTD1051B is specifically qualified to AEC-Q200 automotive standards, which mandates rigorous testing for reliability under vehicle operating conditions including thermal cycling, mechanical shock, and vibration. Standard commercial resistors lack this qualification. The RS73G1JTTD1051B combines AEC-Q200 certification with moisture-resistant thick film construction and a wide operating range of -55°C to 155°C, making it suitable for underhood and high-temperature engine compartment applications where standard 0603 resistors would experience drift or premature failure.

How does the ±0.1% tolerance of the RS73G1JTTD1051B affect precision analog circuit design?: The ±0.1% tolerance of the RS73G1JTTD1051B places it in the precision resistor category, enabling applications requiring tighter impedance control such as sensor signal conditioning, precision current mirrors, and reference divider networks. For a 1.05 kOhm nominal value, this tolerance band spans only ±1.05 Ohms, compared to ±52.5 Ohms for a typical ±5% part. This tight tolerance reduces the need for post-assembly calibration trims in filter networks, instrumentation amplifier gains, and diagnostic current measurement circuits commonly found in automotive ECU designs.

What is the thermal stability performance of the RS73G1JTTD1051B across the full automotive temperature range?: The RS73G1JTTD1051B exhibits a temperature coefficient of ±50ppm/°C, meaning the 1.05 kOhm resistance will vary by approximately ±5.25 Ohms per degree Celsius across its -55°C to 155°C operating window. Over the full 210°C span, this produces a maximum drift of about ±525 ppm or roughly ±0.55 Ohms total change. For most automotive analog sensing and biasing circuits operating within the vehicle's typical thermal envelope, this drift is negligible compared to component tolerance budgets, though precision applications monitoring engine temperature extremes should account for this variation in gain-setting or threshold calculations.

Why is MSL 1 (Unlimited) moisture sensitivity significant for the RS73G1JTTD1051B in automotive assembly?: The RS73G1JTTD1051B carries Moisture Sensitivity Level 1, meaning it requires no moisture-related precautions during assembly, storage, or handling. This eliminates the need for dry-bake procedures, nitrogen-flushed packaging, or humidity-controlled warehousing that higher MSL components demand. For automotive manufacturers running high-volume production with distributed supply chains and variable storage conditions, the RS73G1JTTD1051B's MSL 1 rating reduces assembly floor complexity, shortens lead times from component receipt to reflow, and eliminates potential yield loss from moisture-induced delamination or cracking during soldering.

How does the RS73G1JTTD1051B compare to film or wirewound resistors for automotive sensor signal conditioning?: The RS73G1JTTD1051B thick film construction offers superior high-frequency performance compared to wirewound resistors, which introduce parasitic inductance that can distort sensor signal fidelity in analog-to-digital conversion chains. While film resistors provide exceptional stability, the RS73G1JTTD1051B achieves comparable ±0.1% tolerance in a compact 0603 package with ±50ppm/°C drift and integrated automotive qualification. For sensor networks requiring combined precision, compact board density, cost efficiency, and AEC-Q200 compliance, the RS73G1JTTD1051B's thick film approach eliminates the size penalty of film resistors and the inductance concerns of wirewound designs without sacrificing measurement accuracy in typical automotive diagnostic circuits.

Is the RS73G1JTTD1051B suitable for current-sense resistor applications in battery management systems?: The RS73G1JTTD1051B can function as a precision current-sense element given its ±0.1% tolerance and low temperature coefficient, enabling accurate current measurement across the -55°C to 155°C automotive range. However, at 0.2W rated power dissipation, a single RS73G1JTTD1051B handles continuous current of approximately 435 mA before thermal derating becomes necessary. For high-current battery pack monitoring, series or parallel combinations of multiple RS73G1JTTD1051B units may be required. The thick film composition offers adequate stability for multi-cell balance circuits, though designers should verify thermal coupling between sense resistors and measurement amplifiers to account for localized self-heating effects.

What are the practical assembly and rework considerations for the RS73G1JTTD1051B in 0603 format?: The RS73G1JTTD1051B's 0603 package (1.60mm × 0.80mm) balances ease of manual rework with automated pick-and-place equipment performance. The compact footprint minimizes board space while remaining visible and accessible for soldering iron work. Standard reflow profiles for lead-free automotive solder (peak temperature 245–260°C) are compatible with the RS73G1JTTD1051B's thick film substrate without degradation. The MSL 1 rating simplifies supply chain handling, allowing direct board placement without pre-bake cycles. However, the ±0.1% tolerance and AEC-Q200 qualification should be verified during receiving inspection, as counterfeit or non-qualified substitutes may appear identical while lacking thermal stability and reliability assurance.

How should the RS73G1JTTD1051B be specified in precision voltage divider networks for diagnostic threshold detection?: In a voltage divider using two RS73G1JTTD1051B resistors in series, the ±0.1% tolerance of each component produces a combined error of approximately ±0.14% in the output ratio, assuming uncorrelated worst-case tracking. For automotive fault detection thresholds requiring ±1–2% accuracy, this divider configuration meets typical requirements without additional trimming. If tighter control is needed, selecting matched pairs from the same manufacturing batch improves ratio stability. The ±50ppm/°C drift of the RS73G1JTTD1051B means a 10°C temperature change produces approximately ±0.05% variation in divider ratio, which is usually negligible compared to operational amplifier offset drift and reference voltage stability in real diagnostic circuits.

Can the RS73G1JTTD1051B be paralleled or stacked for impedance adjustment without degrading tolerance and temperature performance?: Two or more RS73G1JTTD1051B resistors can be paralleled to halve impedance or stacked in series to double impedance. Paralleling two RS73G1JTTD1051B units produces an equivalent 525 Ohm impedance with worst-case tolerance of approximately ±0.1% (maintained if components track), while stacking produces 2.1 kOhms with similar tolerance inheritance. The temperature coefficient remains ±50ppm/°C for both configurations provided thermal coupling between components is uniform. In high-current applications, paralleling distributes power dissipation and improves thermal margin, though designers must account for component-to-component manufacturing variations that degrade current-sharing uniformity below the paralleled pair level.

What distinguishes the RS73G1JTTD1051B from commodity 0603 resistors in long-term automotive field reliability?: The RS73G1JTTD1051B's AEC-Q200 qualification requires documented qualification testing including thermal shock cycling (-40°C to 125°C minimum 15 cycles), temperature and humidity storage (85°C/85% RH, 1000 hours), and electrical parameter drift verification post-stress. Commodity 0603 resistors typically undergo only basic room-temperature testing. Over 10+ year automotive service life involving repeated thermal transients, humidity exposure, and vibration, the RS73G1JTTD1051B's thick film formulation and manufacturing controls provide measurably lower failure rates and parameter drift compared to non-qualified alternatives. This reliability assurance justifies the cost premium in safety-critical circuits such as airbag sensing, brake line pressure monitoring, and battery cell balancing where unexpected resistance shift could compromise vehicle function.

Parts with Similar Specifications

The three parts on the right have similar specifications to KOA Speer Electronics, Inc. RS73G1JTTD1051B

Product Attribute
Part Number	RS73G1JTTD1053B	RS73G1JTTD1051F	RS73G1JTTD1050B	RS73G1JTTD1051C
Manufacturer	KOA Speer Electronics, Inc.	KOA Speer Electronics, Inc.	KOA Speer Electronics, Inc.	KOA Speer Electronics, Inc.
Package	-	Tape & Reel (TR)	Tube	Tape & Reel (TR)
Composition	-	-	-	-
Features	-	-	-	Simultaneous Sampling
Temperature Coefficient	-	-	-	-
Height - Seated (Max)	-	-	-	-
Size / Dimension	-	-	-	-
Power (Watts)	-	-	-	-
Number of Terminations	-	-	-	-
Ratings	-	-	-	-
Supplier Device Package	-	196-NFBGA (12x12)	16-PDIP	64-VQFN (9x9)
Operating Temperature	-	-40°C ~ 85°C	0°C ~ 70°C	-40°C ~ 85°C
Resistance	-	-	-	-
Base Product Number	-	DAC34H84	MAX500	ADS62P42
Package / Case	-	196-LFBGA	16-DIP (0.300', 7.62mm)	64-VFQFN Exposed Pad
Tolerance	-	-	-	-
Series	-	-	-	-

RS73G1JTTD1051B Datasheet PDF

Download RS73G1JTTD1051B pdf datasheets and KOA Speer Electronics, Inc. documentation for RS73G1JTTD1051B - KOA Speer Electronics, Inc..

Datasheets: RS73 Type Datasheet.pdf
HTML Datasheet: RS73 Type Datasheet.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

Use your express account for shipment if you have one.
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

Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
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
America	Brazil	7
Europe	Germany	5
	United Kingdom	4
	Italy	5
Oceania	Australia	6
Oceania	New Zealand	5
Asia	India	4
Asia	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.

Visual inspection
Performance testing and reliability verification
Standardized full-process testing
Precise control of every parameter

We eliminate defective components and ensure the stable operation of electronic devices through professional quality standards.

Quality Inspection

Payment Support

The payment method can be chosen from the methods shown below: Wire Transfer (T/T, Bank Transfer), Western Union, Credit card, PayPal.

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.

Phone: +00852 9146 4856
Email: info@allelco.com

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