Equivalent & Substitute Parts for RK73H1HTTC6343F

Part Overview

The RK73H1HTTC6343F is a 634 kOhm ±1% thick film chip resistor manufactured by KOA Speer Electronics, Inc., rated at 0.05W (1/20W) in a 0201 package (0.60mm x 0.30mm metric). This component is designed for automotive applications with AEC-Q200 qualification and moisture-resistant construction. The part is currently marked as Not For New Designs, necessitating identification of active equivalent alternatives that maintain identical electrical and mechanical specifications for ongoing production and maintenance applications.

Substiute Parts

RK73H1HTTC6343F

KOA Speer Electronics, Inc.In Stock: 1159RK73H1HTTC6343F Datasheet

Current PartRFQ

RK73H1HTTCM6343F

KOA Speer Electronics, Inc.In Stock: 923RK73H1HTTCM6343F Datasheet

MFR RecommendedRFQ

AC0201FR-07634KL

YAGEOIn Stock: 1119AC0201FR-07634KL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RK73H1HTTC6343F is determined by strict equivalence across the following critical parameters:

Electrical Parameters: Resistance value (634 kOhms), tolerance (±1%), power rating (0.05W), temperature coefficient (±200ppm/°C), and operating temperature range (-55°C to 155°C) must be identical.

Mechanical Parameters: Package type (0201 / 0603 Metric), physical dimensions (0.024" L x 0.012" W / 0.60mm x 0.30mm), and number of terminations (2) must match exactly.

Compliance & Features: AEC-Q200 automotive qualification, moisture-resistant construction, ROHS3 compliance, and MSL 1 rating are mandatory for substitution in automotive applications.

Substitute parts are grouped into two categories: (1) Manufacturer-recommended alternatives from KOA Speer Electronics, Inc., and (2) direct cross-reference parts from alternative manufacturers meeting identical specifications.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: RK73H1HTTCM6343F (KOA Speer Electronics, Inc.)

This part is the manufacturer-recommended substitute from KOA Speer Electronics, Inc. It maintains active product status and carries identical electrical specifications, package configuration, and compliance certifications. The primary distinction is the absence of explicit moisture-resistant designation in the datasheet, though MSL 1 rating and ROHS3 compliance are maintained. Selection of this part is appropriate for applications where the original moisture-resistant feature is not a critical design requirement.

Secondary Substitute: AC0201FR-07634KL (YAGEO)

This YAGEO part provides a direct cross-reference alternative with active product status. It matches all electrical parameters, package specifications, and compliance requirements of the original part, including explicit moisture-resistant construction and AEC-Q200 automotive qualification. This part is suitable for applications requiring full feature parity with the original RK73H1HTTC6343F.

Both substitute parts are ROHS3 compliant, carry MSL 1 ratings, and maintain the -55°C to 155°C operating temperature range required for automotive applications.

Frequently Asked Questions (FAQ)

Q: Can RK73H1HTTCM6343F be used as a direct replacement for RK73H1HTTC6343F?

A: RK73H1HTTCM6343F is electrically and mechanically equivalent to RK73H1HTTC6343F. Both parts share identical resistance (634 kOhms), tolerance (±1%), power rating (0.05W), package (0201), temperature coefficient (±200ppm/°C), and operating range (-55°C to 155°C). The primary difference is that RK73H1HTTCM6343F does not explicitly specify moisture-resistant construction, though both maintain MSL 1 rating. Selection depends on whether moisture resistance is a critical design parameter for your application.

Q: What is the difference between the KOA and YAGEO substitutes?

A: Both RK73H1HTTCM6343F (KOA) and AC0201FR-07634KL (YAGEO) are electrically and mechanically identical to the original part. The YAGEO part explicitly includes moisture-resistant construction, matching the original specification more closely. Both are AEC-Q200 qualified, ROHS3 compliant, and carry MSL 1 ratings. Selection between them depends on supplier availability and procurement preferences.

Q: Are all substitute parts AEC-Q200 qualified?

A: Yes. Both RK73H1HTTCM6343F and AC0201FR-07634KL carry AEC-Q200 automotive qualification, matching the original part's compliance status.

Q: Can these parts be used interchangeably on the same PCB assembly?

A: Yes. All substitute parts share identical package specifications (0201 / 0603 Metric), physical dimensions (0.024" L x 0.012" W), and termination configuration (2 terminations). They are mechanically and electrically interchangeable at the PCB level.

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

A: This designation indicates that RK73H1HTTC6343F is in end-of-life phase and should not be selected for new product designs. The substitute parts RK73H1HTTCM6343F and AC0201FR-07634KL both carry "Active" product status, making them appropriate for new designs and ongoing production.

Q: Are all parts ROHS3 compliant?

A: Yes. RK73H1HTTC6343F, RK73H1HTTCM6343F, and AC0201FR-07634KL are all ROHS3 compliant and REACH unaffected.