Equivalent & Substitute Parts for RK73H1HTTC40R2F

Part Overview

The RK73H1HTTC40R2F is a 40.2 Ohm ±1% thick film chip resistor manufactured by KOA Speer Electronics, Inc., rated for 0.05W (1/20W) power dissipation in a 0201 (0603 Metric) surface mount package. This component is designed for automotive applications and meets AEC-Q200 qualification standards with moisture-resistant construction.

The RK73H1HTTC40R2F carries a "Not For New Designs" product status. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain flexibility, and support ongoing production of existing applications where this resistor is specified.

Substiute Parts

RK73H1HTTC40R2F

KOA Speer Electronics, Inc.In Stock: 1454RK73H1HTTC40R2F Datasheet

Current PartRFQ

RK73H1HTTCM40R2F

KOA Speer Electronics, Inc.In Stock: 1012RK73H1HTTCM40R2F Datasheet

MFR RecommendedRFQ

AC0201FR-0740R2L

YAGEOIn Stock: 852AC0201FR-0740R2L Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RK73H1HTTC40R2F are qualified based on the following electrical and mechanical parameters:

Critical Matching Parameters:

• Resistance value: 40.2 Ohms
• Tolerance: ±1%
• Power rating: 0.05W (1/20W)
• Package: 0201 (0603 Metric)
• Composition: Thick Film
• Temperature coefficient: ±200ppm/°C
• Operating temperature range: -55°C ~ 155°C
• Automotive qualification: 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

All substitute parts listed meet these specifications and are therefore electrically and mechanically interchangeable with the RK73H1HTTC40R2F in applications where these parameters are required.

Parameter Comparison

Engineering Selection Recommendations

RK73H1HTTCM40R2F (KOA Speer Electronics, Inc.) - Manufacturer Recommended Substitute

This part is the direct manufacturer-recommended substitute for the RK73H1HTTC40R2F. It maintains identical electrical specifications, package dimensions, and automotive AEC-Q200 qualification. The primary distinction is active product status, making it the preferred choice for ongoing production and new applications. However, this part does not include moisture-resistant construction as a specified feature, whereas the original part explicitly includes this characteristic.

AC0201FR-0740R2L (YAGEO) - Direct Equivalent

This YAGEO part provides full electrical and mechanical equivalence to the RK73H1HTTC40R2F. It maintains all critical parameters including 40.2 Ohm resistance, ±1% tolerance, 0.05W power rating, 0201 package, AEC-Q200 automotive qualification, and moisture-resistant thick film construction. The AC0201FR-0740R2L carries active product status and is available in Tape & Reel packaging. This part is suitable for direct substitution in applications requiring the complete feature set of the original component.

Frequently Asked Questions (FAQ)

Q: Can RK73H1HTTCM40R2F be used as a direct replacement for RK73H1HTTC40R2F?

A: RK73H1HTTCM40R2F matches all electrical and mechanical specifications of the RK73H1HTTC40R2F, including resistance, tolerance, power rating, package dimensions, temperature range, and AEC-Q200 automotive qualification. However, the original part specifies moisture-resistant construction while the substitute does not explicitly list this feature. Verify moisture resistance requirements for your specific application before substitution.

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

A: Both RK73H1HTTCM40R2F (KOA) and AC0201FR-0740R2L (YAGEO) provide equivalent electrical performance and package compatibility. The primary differences are manufacturer identity and feature specifications. AC0201FR-0740R2L explicitly includes moisture-resistant construction matching the original part. Both carry active product status and AEC-Q200 automotive qualification.

Q: Are all substitute parts available in the same packaging format?

A: RK73H1HTTC40R2F and AC0201FR-0740R2L are both available in Tape & Reel (TR) packaging. RK73H1HTTCM40R2F packaging information is not specified in available data. Confirm packaging availability with your supplier before design implementation.

Q: Why is the original RK73H1HTTC40R2F marked "Not For New Designs"?

A: The "Not For New Designs" status indicates that KOA Speer Electronics, Inc. has transitioned this part to end-of-life or obsolescence management. For new designs, use RK73H1HTTCM40R2F (KOA) or AC0201FR-0740R2L (YAGEO), both of which carry active product status.

Q: Do all substitute parts meet the same compliance standards?

A: All listed parts are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99. All carry AEC-Q200 automotive qualification and Moisture Sensitivity Level 1 (Unlimited). Compliance requirements are met across all substitutes.

Q: Can these parts be used interchangeably in automotive applications?

A: Yes. All substitute parts maintain AEC-Q200 automotive qualification, operating temperature range of -55°C ~ 155°C, and identical electrical specifications. They are suitable for direct substitution in automotive circuit designs where the RK73H1HTTC40R2F was originally specified.