Equivalent & Substitute Parts for RK73H1HTTC4641F

Part Overview

The RK73H1HTTC4641F is a 4.64 kOhms ±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 suitable for harsh operating environments.

The RK73H1HTTC4641F carries a "Not For New Designs" product status, indicating that KOA Speer Electronics has transitioned this part to end-of-life. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support existing production requirements for systems currently utilizing this component.

Substiute Parts

RK73H1HTTC4641F

KOA Speer Electronics, Inc.In Stock: 32040RK73H1HTTC4641F Datasheet

Current PartRFQ

RK73H1HTTCM4641F

KOA Speer Electronics, Inc.In Stock: 1026RK73H1HTTCM4641F Datasheet

MFR RecommendedRFQ

AC0201FR-074K64L

YAGEOIn Stock: 754AC0201FR-074K64L Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RK73H1HTTC4641F are qualified based on strict electrical and mechanical parameter matching:

Primary Substitution Criteria:

• Resistance value: 4.64 kOhms (exact match required)
• Tolerance: ±1% (exact match required)
• Power rating: 0.05W / 1/20W (exact match required)
• Package: 0201 (0603 Metric) (exact match required)
• Composition: Thick Film (exact match required)
• Temperature coefficient: ±200ppm/°C (exact match required)
• Operating temperature range: -55°C ~ 155°C (exact match required)
• Automotive compliance: AEC-Q200 (exact match required)
• Moisture resistance: Yes (exact match required)
• RoHS compliance: ROHS3 Compliant (exact match required)

All identified substitute parts meet these criteria without exception. Substitution is valid only when all parameters align with the original component specification.

Parameter Comparison

Engineering Selection Recommendations

RK73H1HTTCM4641F (KOA Speer Electronics, Inc.) - Manufacturer Recommended Substitute

This part is the direct manufacturer-recommended upgrade from the RK73H1HTTC4641F. Both components share identical electrical and mechanical specifications, with the primary distinction being active product status. The RK73H1HTTCM4641F is currently in active production and represents the manufacturer's current offering for this resistance value and package configuration. Selection of this part ensures continuity with the original design intent while securing long-term supply availability.

AC0201FR-074K64L (YAGEO) - Cross-Manufacturer Equivalent

The AC0201FR-074K64L from YAGEO provides full electrical and mechanical equivalence to the RK73H1HTTC4641F. This component meets all specified parameters including AEC-Q200 automotive compliance, ROHS3 certification, and identical thermal and electrical characteristics. This part is suitable for applications requiring cross-manufacturer sourcing flexibility or when KOA supply is constrained.

Both substitute parts maintain full compatibility with the original design specification and are appropriate for direct replacement in existing applications.

Frequently Asked Questions (FAQ)

Q: Can the RK73H1HTTCM4641F be used as a direct replacement for the RK73H1HTTC4641F?

A: Yes. The RK73H1HTTCM4641F is the manufacturer-recommended substitute. All electrical parameters (resistance, tolerance, power rating, temperature coefficient), mechanical dimensions (0201 package), and compliance ratings (AEC-Q200, ROHS3, MSL 1) are identical. The primary difference is product status: RK73H1HTTCM4641F is active production while RK73H1HTTC4641F is not for new designs.

Q: Is the AC0201FR-074K64L from YAGEO compatible with designs using the RK73H1HTTC4641F?

A: Yes. The AC0201FR-074K64L meets all electrical and mechanical specifications of the original part. Resistance (4.64 kOhms ±1%), power rating (0.05W), package (0201), temperature range (-55°C ~ 155°C), and automotive compliance (AEC-Q200) are fully matched. This part is suitable for direct substitution.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution eligibility is determined by exact matching of: resistance value (4.64 kOhms), 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), moisture resistance capability, and RoHS compliance status (ROHS3).

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

A: The RK73H1HTTC4641F and RK73H1HTTCM4641F are both supplied in Tape & Reel (TR) format. The AC0201FR-074K64L is also supplied in Tape & Reel (TR) format. All three parts use the identical 0201 (0603 Metric) package with matching physical dimensions: 0.024" L x 0.012" W (0.60mm x 0.30mm) and maximum seated height of 0.010" (0.26mm).

Q: What is the significance of the "Not For New Designs" status on the RK73H1HTTC4641F?

A: This status indicates that KOA Speer Electronics has discontinued active development and production of this specific part number. While existing inventory remains available, the manufacturer recommends using the RK73H1HTTCM4641F for new applications. For ongoing production support and supply continuity, selection of an active-status substitute is appropriate.

Q: Do all substitute parts maintain AEC-Q200 automotive compliance?

A: Yes. Both RK73H1HTTCM4641F and AC0201FR-074K64L carry AEC-Q200 automotive qualification. This rating is maintained across all substitute options and is suitable for automotive applications requiring this compliance level.