Equivalent & Substitute Parts for RK73H1HTTC41R2F

Part Overview

The RK73H1HTTC41R2F is a 41.2 Ohm ±1% thick film chip resistor manufactured by KOA Speer Electronics, Inc., designed for 0.05W (1/20W) applications in the 0201 (0603 Metric) package format. This component is rated for automotive applications under AEC-Q200 and features moisture-resistant construction with unlimited moisture sensitivity level (MSL 1).

The RK73H1HTTC41R2F carries a "Not For New Designs" product status, indicating it has been superseded in the manufacturer's active product line. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and access components with active production status and improved availability.

Substiute Parts

RK73H1HTTC41R2F

KOA Speer Electronics, Inc.In Stock: 782RK73H1HTTC41R2F Datasheet

Current PartRFQ

RK73H1HTTCM41R2F

KOA Speer Electronics, Inc.In Stock: 1201RK73H1HTTCM41R2F Datasheet

MFR RecommendedRFQ

AC0201FR-0741R2L

YAGEOIn Stock: 1077AC0201FR-0741R2L Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RK73H1HTTC41R2F are qualified based on the following electrical and mechanical parameters:

Critical Matching Parameters:

• Resistance value: 41.2 Ohms
• Tolerance: ±1%
• Power rating: 0.05W (1/20W)
• Package format: 0201 (0603 Metric)
• Composition: Thick Film
• Temperature coefficient: ±200ppm/°C
• Operating temperature range: -55°C ~ 155°C
• Automotive compliance: AEC-Q200
• Moisture resistance: Required
• Physical dimensions: 0.024" L x 0.012" W (0.60mm x 0.30mm)
• Height (seated, max): 0.010" (0.26mm)
• Terminations: 2
• RoHS compliance: ROHS3
• MSL rating: 1 (Unlimited)

All substitute parts listed meet these parameters without exception. Substitution is valid across manufacturers when all electrical characteristics, package specifications, and compliance ratings are identical.

Parameter Comparison

Engineering Selection Recommendations

RK73H1HTTCM41R2F (KOA Speer Electronics, Inc.):

This part is the manufacturer-recommended equivalent from KOA Speer Electronics. It maintains identical electrical specifications, package format, and AEC-Q200 automotive compliance. The primary distinction is active product status, indicating ongoing production and supply availability. This part is suitable for direct substitution in applications where KOA sourcing is preferred or specified. Note that moisture resistance is not explicitly specified in the provided data for this variant.

AC0201FR-0741R2L (YAGEO):

This part represents a cross-manufacturer substitute from YAGEO. It matches all critical electrical parameters, package specifications, temperature characteristics, and automotive compliance ratings. The AC0201FR-0741R2L maintains active product status with confirmed moisture-resistant construction. This part is suitable for applications where multi-source qualification is required or where YAGEO components are preferred for supply chain diversification.

Both substitute parts are qualified for direct replacement based on identical resistance, tolerance, power rating, package format, temperature coefficient, operating temperature range, AEC-Q200 compliance, and RoHS3 compliance status.

Frequently Asked Questions (FAQ)

Q: Can RK73H1HTTCM41R2F replace RK73H1HTTC41R2F in existing designs?

A: Yes. Both parts share identical electrical specifications (41.2 Ohms ±1%, 0.05W), package format (0201), temperature characteristics (±200ppm/°C, -55°C ~ 155°C), and AEC-Q200 automotive compliance. The primary difference is product status; RK73H1HTTCM41R2F is active production while RK73H1HTTC41R2F is not for new designs.

Q: Is AC0201FR-0741R2L from YAGEO electrically equivalent to the KOA part?

A: Yes. AC0201FR-0741R2L matches all critical electrical parameters: 41.2 Ohms ±1%, 0.05W power rating, ±200ppm/°C temperature coefficient, -55°C ~ 155°C operating range, and AEC-Q200 compliance. Physical package dimensions and termination count are identical.

Q: What are the key parameters that determine substitutability?

A: Substitutability is determined by: resistance value (41.2 Ohms), tolerance (±1%), power rating (0.05W), package format (0201), composition (thick film), temperature coefficient (±200ppm/°C), operating temperature range (-55°C ~ 155°C), automotive rating (AEC-Q200), physical dimensions (0.024" L x 0.012" W), and compliance certifications (RoHS3, MSL 1).

Q: Are there any differences in moisture resistance between the substitute parts?

A: RK73H1HTTC41R2F and AC0201FR-0741R2L are both specified as moisture resistant. RK73H1HTTCM41R2F does not explicitly specify moisture resistance in the provided data. All three parts carry MSL 1 (Unlimited) rating.

Q: Can these parts be used interchangeably in PCB assembly?

A: Yes. All three parts use the 0201 (0603 Metric) package format with identical physical dimensions (0.024" L x 0.012" W, height 0.010" max) and 2-termination configuration. They are compatible with standard 0201 PCB footprints and assembly processes.

Q: Which substitute should be selected for new automotive designs?

A: For new automotive designs, either RK73H1HTTCM41R2F or AC0201FR-0741R2L is appropriate, as both carry active product status and AEC-Q200 compliance. Selection should be based on established supplier relationships, supply chain strategy, and any existing design specifications for manufacturer preference.