RK73G1HTTC5103F Equivalent & Substitute Parts

Part Overview

The RK73G1HTTC5103F is a 510 kOhms ±1% thick film chip resistor manufactured by KOA Speer Electronics, Inc., rated for 0.05W (1/20W) power dissipation in a 0201 (0603 Metric) package. This component is designed for automotive applications and meets AEC-Q200 qualification standards. The part is currently classified as "Not For New Designs," which necessitates identification of active equivalent alternatives that maintain identical electrical and mechanical specifications for ongoing production and maintenance applications.

Substiute Parts

RK73G1HTTC5103F

KOA Speer Electronics, Inc.In Stock: 966RK73G1HTTC5103F Datasheet

Current PartRFQ

RK73G1HTTCM5103F

KOA Speer Electronics, Inc.In Stock: 837RK73G1HTTCM5103F Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RK73G1HTTC5103F is determined by strict equivalence across the following critical parameters:

Electrical Specifications: Resistance value (510 kOhms), tolerance (±1%), and power rating (0.05W) must be identical. Temperature coefficient (±50ppm/°C) and operating temperature range (-55°C ~ 155°C) define thermal performance boundaries.

Mechanical Specifications: Package type (0201 / 0603 Metric), physical dimensions (0.024" L x 0.012" W / 0.60mm x 0.30mm), and seated height (0.010" / 0.26mm maximum) ensure PCB compatibility and assembly process compatibility.

Compliance & Ratings: AEC-Q200 automotive qualification, ROHS3 compliance, and Moisture Sensitivity Level 1 are mandatory for equivalent substitution in automotive applications.

Composition: Thick film construction must be maintained to preserve electrical performance characteristics.

Parts meeting all these criteria are classified as direct equivalents and may be substituted without circuit redesign or validation.

Parameter Comparison

Engineering Selection Recommendations

The RK73G1HTTCM5103F is the direct equivalent substitute for the RK73G1HTTC5103F. Both components are manufactured by KOA Speer Electronics, Inc., within the RK73G series, and share identical electrical, mechanical, and compliance specifications.

The primary distinction is product status: the original part (RK73G1HTTC5103F) is classified as "Not For New Designs," while the substitute (RK73G1HTTCM5103F) maintains "Active" status. This status change reflects manufacturing lifecycle management and does not indicate any change in component performance or qualification.

For applications currently using RK73G1HTTC5103F, transition to RK73G1HTTCM5103F is supported without circuit modification. Both parts satisfy AEC-Q200 automotive requirements, ROHS3 environmental compliance, and identical thermal and electrical operating parameters. The substitute part is suitable for new production, maintenance, and field replacement applications.

Frequently Asked Questions (FAQ)

Q: Can RK73G1HTTCM5103F be used as a direct replacement for RK73G1HTTC5103F in automotive circuits?

A: Yes. Both parts are electrically and mechanically identical, with matching 510 kOhms resistance, ±1% tolerance, 0.05W power rating, 0201 package, and AEC-Q200 qualification. The substitute part is suitable for direct substitution without circuit redesign.

Q: What is the significance of the "Not For New Designs" status on the original part?

A: This designation indicates the part has reached end-of-life in the manufacturer's product lifecycle. The substitute part (RK73G1HTTCM5103F) with "Active" status is the recommended choice for new production and ongoing applications.

Q: Are the physical dimensions and PCB footprints identical between these parts?

A: Yes. Both parts use the 0201 (0603 Metric) package with identical dimensions: 0.024" L x 0.012" W (0.60mm x 0.30mm) and maximum seated height of 0.010" (0.26mm). PCB assembly processes and component placement are unchanged.

Q: Do both parts meet the same automotive and environmental compliance standards?

A: Yes. Both RK73G1HTTC5103F and RK73G1HTTCM5103F are AEC-Q200 qualified, ROHS3 compliant, and REACH unaffected. Moisture Sensitivity Level is 1 (Unlimited) for both parts.

Q: Is there any difference in temperature performance between these parts?

A: No. Both parts have identical temperature coefficient (±50ppm/°C) and operating temperature range (-55°C ~ 155°C), ensuring equivalent thermal performance in all operating conditions.