Equivalent & Substitute Parts for RK73H1HTTC5102F

Part Overview

The RK73H1HTTC5102F is a 51 kOhms ±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). This component meets AEC-Q200 automotive qualification standards and features moisture-resistant construction suitable for automotive and industrial applications operating across -55°C to 155°C.

The RK73H1HTTC5102F carries a "Not For New Designs" product status. Identifying equivalent and substitute parts is necessary to support existing designs, manage inventory transitions, and ensure continued supply chain availability for production and maintenance applications.

Substiute Parts

RK73H1HTTC5102F

KOA Speer Electronics, Inc.In Stock: 29678RK73H1HTTC5102F Datasheet

Current PartRFQ

RK73H1HTTCM5102F

KOA Speer Electronics, Inc.In Stock: 1068RK73H1HTTCM5102F Datasheet

MFR RecommendedRFQ

AC0201FR-0751KL

YAGEOIn Stock: 21062AC0201FR-0751KL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RK73H1HTTC5102F are qualified based on strict electrical and mechanical parameter matching:

Substitution Criteria:

• Resistance value: 51 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)
• AEC-Q200 automotive qualification (required for automotive applications)
• Moisture resistance: Present (required for reliability)
• RoHS3 compliance (required for regulatory conformance)
• MSL rating: 1 (Unlimited) (exact match required)

Substitute parts must satisfy all listed parameters without exception. Parts meeting these criteria are electrically and mechanically interchangeable in applications designed for the RK73H1HTTC5102F.

Parameter Comparison

Engineering Selection Recommendations

RK73H1HTTCM5102F (KOA Speer Electronics, Inc.)

This part is the manufacturer-recommended substitute from KOA Speer Electronics, Inc. It maintains identical electrical and mechanical specifications to the RK73H1HTTC5102F while carrying an Active product status. This part is suitable for new production runs and ongoing supply requirements. All compliance certifications (AEC-Q200, ROHS3, REACH Unaffected) are maintained.

AC0201FR-0751KL (YAGEO)

This part is a direct cross-reference substitute from YAGEO, meeting all electrical and mechanical parameters of the RK73H1HTTC5102F. The AC series thick film resistor carries Active product status and maintains full AEC-Q200 automotive qualification, ROHS3 compliance, and moisture resistance. This part provides an alternative sourcing option from a different manufacturer while preserving all functional and compliance requirements.

Both substitute parts are electrically and mechanically interchangeable with the RK73H1HTTC5102F in applications requiring 51 kOhms ±1% 0.05W 0201 automotive-grade resistors.

Frequently Asked Questions (FAQ)

Q: Can RK73H1HTTCM5102F replace RK73H1HTTC5102F in existing designs?

A: Yes. The RK73H1HTTCM5102F is the manufacturer-recommended substitute from KOA Speer Electronics, Inc., with identical electrical specifications (51 kOhms ±1%, 0.05W), package (0201), composition (thick film), temperature coefficient (±200ppm/°C), operating range (-55°C ~ 155°C), and all compliance ratings (AEC-Q200, ROHS3, MSL 1). Direct substitution is supported.

Q: Can AC0201FR-0751KL replace RK73H1HTTC5102F?

A: Yes. The AC0201FR-0751KL from YAGEO meets all electrical and mechanical parameters of the RK73H1HTTC5102F, including resistance (51 kOhms ±1%), power rating (0.05W), package (0201), composition (thick film), temperature coefficient (±200ppm/°C), operating range (-55°C ~ 155°C), and compliance certifications (AEC-Q200, ROHS3, MSL 1). Direct substitution is supported.

Q: Why is the RK73H1HTTC5102F 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. New designs should use the active substitute RK73H1HTTCM5102F or AC0201FR-0751KL to ensure long-term supply availability and manufacturer support.

Q: Are there any package differences between these parts?

A: No. All three parts use the 0201 package (0603 Metric), with identical dimensions (0.024" L x 0.012" W / 0.60mm x 0.30mm) and maximum seated height (0.010" / 0.26mm). Package compatibility is confirmed.

Q: Do all substitute parts meet automotive AEC-Q200 requirements?

A: Yes. Both RK73H1HTTCM5102F and AC0201FR-0751KL carry AEC-Q200 automotive qualification ratings, matching the original RK73H1HTTC5102F. All three parts are suitable for automotive applications.

Q: What is the MSL rating, and why does it matter?

A: MSL (Moisture Sensitivity Level) 1 (Unlimited) indicates that these resistors have unlimited shelf life and do not require special moisture-control storage or handling procedures. All three parts share this rating, ensuring consistent handling requirements across substitutions.