Equivalent & Substitute Parts for RK73B1HTTC302J

Part Overview

The RK73B1HTTC302J is a 3 kOhms ±5% 0.05W thick film chip resistor in 0201 package (0603 metric) manufactured by KOA Speer Electronics, Inc. This component is rated for automotive applications under AEC-Q200 standard with operating temperature range of -55°C to 155°C. The part is currently classified as "Not For New Designs," necessitating identification of equivalent and substitute components for ongoing production and maintenance applications. Equivalent parts maintain identical electrical and mechanical specifications, while substitute parts offer enhanced performance characteristics or alternative sourcing options.

Key Parameters

Parameter	Specification
Resistance Value	3 kOhms
Tolerance	±5%
Power Rating	0.05W (1/20W)
Package / Case	0201 (0603 Metric)
Composition	Thick Film
Temperature Coefficient	±200ppm/°C
Operating Temperature Range	-55°C ~ 155°C
Dimensions	0.024" L x 0.012" W (0.60mm x 0.30mm)
Height - Seated (Max)	0.010" (0.26mm)
Moisture Sensitivity Level	MSL 1 (Unlimited)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution compatibility for the RK73B1HTTC302J is determined by strict adherence to the following parameters: resistance value (3 kOhms), package type (0201), composition (thick film), and physical dimensions (0.024" L x 0.012" W). All substitute parts must maintain these core specifications to ensure mechanical fit and electrical function in the original circuit application.

Substitute parts are categorized into three groups:

Direct Equivalents (Identical Specifications): Parts maintaining ±5% tolerance, 0.05W power rating, ±200ppm/°C temperature coefficient, and -55°C to 155°C operating range.

Direct Alternatives (Equivalent Performance, Different Manufacturer): Parts from alternative manufacturers with identical electrical and mechanical specifications, enabling cross-sourcing without design modification.

Upgrade Options (Enhanced Tolerance): Parts with improved ±1% tolerance and/or enhanced temperature coefficient (±100ppm/°C), providing superior performance while maintaining package compatibility and core resistance value.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Temp Coeff (ppm/°C)	Operating Temp (°C)	Package	Status	Inventory (Pcs)
RK73B1HTTC302J	KOA Speer	3 kΩ	±5%	0.05	±200	-55 ~ 155	0201	Not For New Designs	16117
RK73B1HTTCM302J	KOA Speer	3 kΩ	±5%	0.05	±200	-55 ~ 155	0201	Active	1035
AC0201JR-073KL	YAGEO	3 kΩ	±5%	0.05	±200	-55 ~ 155	0201	Active	983
CRCW02013K00JNED	Vishay Dale	3 kΩ	±5%	0.05	±200	-55 ~ 155	0201	Active	10366
ERJ-1GNJ302C	Panasonic	3 kΩ	±5%	0.05	±200	-55 ~ 125	0201	Active	67375
RC0201JR-073KL	YAGEO	3 kΩ	±5%	0.05	±200	-55 ~ 125	0201	Active	26996
CRCW02013K00FKED	Vishay Dale	3 kΩ	±1%	0.05	±100	-55 ~ 155	0201	Active	41748
CRCW02013K00FNED	Vishay Dale	3 kΩ	±1%	0.05	±200	-55 ~ 155	0201	Active	14071
ERJ-1GNF3001C	Panasonic	3 kΩ	±1%	0.05	±200	-55 ~ 125	0201	Active	78889
RMCF0201FT3K00	Stackpole	3 kΩ	±1%	0.05	±200	-55 ~ 155	0201	Active	87804

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications):

RK73B1HTTCM302J from KOA Speer Electronics is the primary recommended equivalent, maintaining all electrical and mechanical parameters of the original RK73B1HTTC302J while offering Active product status. This part is the direct successor within the same manufacturer's RK73B series.

CRCW02013K00JNED from Vishay Dale provides equivalent specifications with higher inventory availability (10366 pcs) and Active status, suitable for applications requiring cross-manufacturer sourcing.

ERJ-1GNJ302C from Panasonic Electronic Components offers equivalent performance with the highest inventory level (67375 pcs) and Active status, enabling reliable long-term supply.

For Applications Requiring Enhanced Tolerance:

CRCW02013K00FKED from Vishay Dale provides ±1% tolerance with ±100ppm/°C temperature coefficient, improving circuit accuracy while maintaining -55°C to 155°C operating range and Active status.

RMCF0201FT3K00 from Stackpole Electronics offers ±1% tolerance with AEC-Q200 automotive rating, -55°C to 155°C operating range, and the highest inventory availability (87804 pcs) among upgrade options.

Temperature Range Considerations:

Parts with -55°C to 125°C operating range (ERJ-1GNJ302C, RC0201JR-073KL) are suitable for applications not requiring the full 155°C upper limit of the original specification.

All substitute parts maintain ROHS3 compliance, MSL 1 rating, and identical 0201 package dimensions, ensuring mechanical and environmental compatibility.

Frequently Asked Questions (FAQ)

Q: Can RK73B1HTTCM302J directly replace RK73B1HTTC302J?

A: Yes. RK73B1HTTCM302J maintains identical electrical specifications (3 kOhms ±5%, 0.05W, ±200ppm/°C, -55°C to 155°C) and mechanical package (0201), with the advantage of Active product status. This is the recommended direct replacement.

Q: What is the difference between direct equivalents and upgrade options?

A: Direct equivalents maintain ±5% tolerance and ±200ppm/°C temperature coefficient. Upgrade options provide ±1% tolerance and/or ±100ppm/°C temperature coefficient, delivering improved accuracy and stability. Both categories maintain identical 3 kOhms resistance value and 0201 package compatibility.

Q: Are parts with -55°C to 125°C operating range suitable replacements?

A: ERJ-1GNJ302C and RC0201JR-073KL with -55°C to 125°C operating range are suitable for applications not requiring operation above 125°C. Original specification supports -55°C to 155°C; verify application temperature requirements before selection.

Q: What is the significance of AEC-Q200 rating?

A: AEC-Q200 certification indicates automotive-grade qualification. RK73B1HTTC302J and RMCF0201FT3K00 carry this rating. Other substitutes without explicit AEC-Q200 designation may still function in automotive applications but lack formal automotive qualification documentation.

Q: How do moisture sensitivity levels affect part selection?

A: All listed parts maintain MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions. Storage and handling requirements are identical across all substitute options.

Q: Can I use CRCW02013K00FKED in place of the original part?

A: Yes, with performance enhancement. CRCW02013K00FKED provides ±1% tolerance (versus ±5%) and ±100ppm/°C temperature coefficient (versus ±200ppm/°C), improving circuit accuracy. Mechanical compatibility (0201 package) and operating temperature range (-55°C to 155°C) are maintained.

Q: Which substitute offers the best inventory availability?

A: RMCF0201FT3K00 from Stackpole Electronics provides the highest inventory (87804 pcs) among all options, with Active status, ±1% tolerance upgrade, and AEC-Q200 automotive rating.

Q: Are all substitutes ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance, matching the environmental compliance status of the original RK73B1HTTC302J.

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