Equivalent & Substitute Parts for RK73H1HTTC5603F

Part Overview

The RK73H1HTTC5603F is a 560 kOhms ±1% thick film chip resistor manufactured by KOA Speer Electronics, Inc., rated at 0.05W (1/20W) in a 0201 (0603 Metric) package. This component is designed for automotive applications and meets AEC-Q200 qualification standards with moisture-resistant construction.

The RK73H1HTTC5603F 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 availability, and support existing production requirements for applications currently utilizing this component.

Substiute Parts

RK73H1HTTC5603F

KOA Speer Electronics, Inc.In Stock: 914RK73H1HTTC5603F Datasheet

Current PartRFQ

RK73H1HTTCM5603F

KOA Speer Electronics, Inc.In Stock: 863RK73H1HTTCM5603F Datasheet

MFR RecommendedRFQ

AC0201FR-07560KL

YAGEOIn Stock: 733AC0201FR-07560KL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RK73H1HTTC5603F are qualified based on strict electrical and mechanical parameter matching:

Electrical Parameters (Must Match Exactly):

• Resistance value: 560 kOhms
• Tolerance: ±1%
• Power rating: 0.05W (1/20W)
• Temperature coefficient: ±200ppm/°C
• Operating temperature range: -55°C ~ 155°C

Mechanical Parameters (Must Match Exactly):

• Package / Case: 0201 (0603 Metric)
• Physical dimensions: 0.024" L x 0.012" W (0.60mm x 0.30mm)
• Height - Seated (Max): 0.010" (0.26mm)
• Number of terminations: 2

Compliance & Certification (Must Match):

• AEC-Q200 automotive qualification
• Moisture-resistant thick film construction
• RoHS3 compliance
• MSL 1 (Unlimited)

Substitute parts meeting all these criteria are functionally and mechanically interchangeable with the original component in automotive and industrial applications.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: RK73H1HTTCM5603F

The RK73H1HTTCM5603F is the manufacturer-recommended substitute from KOA Speer Electronics, Inc. This part maintains identical electrical and mechanical specifications while carrying an "Active" product status. Selection of this part ensures continuity within the same manufacturer's product line and simplifies supply chain management. Current inventory availability is 760 pieces.

Alternative Substitute: AC0201FR-07560KL

The AC0201FR-07560KL from YAGEO is a direct functional equivalent meeting all electrical, mechanical, and compliance requirements. This part is manufactured by an alternative supplier and carries "Active" product status. Selection of this part provides supply chain diversification and alternative sourcing options. Current inventory availability is 660 pieces.

Both substitute parts satisfy all automotive, compliance, and environmental requirements specified for the original component. Selection between them should be based on supply chain strategy, procurement lead times, and existing qualification documentation within your organization.

Frequently Asked Questions (FAQ)

Q: Can RK73H1HTTCM5603F be used as a direct replacement for RK73H1HTTC5603F?

A: Yes. The RK73H1HTTCM5603F is electrically and mechanically identical to the RK73H1HTTC5603F. Both components share the same resistance value (560 kOhms), tolerance (±1%), power rating (0.05W), package (0201), temperature coefficient (±200ppm/°C), operating temperature range (-55°C ~ 155°C), and AEC-Q200 automotive qualification. The primary difference is product status: RK73H1HTTCM5603F is active, while RK73H1HTTC5603F is not for new designs.

Q: Is AC0201FR-07560KL compatible with designs using RK73H1HTTC5603F?

A: Yes. The AC0201FR-07560KL meets all electrical and mechanical specifications required for substitution. Resistance, tolerance, power rating, package dimensions, temperature coefficient, operating temperature range, and AEC-Q200 certification are identical. The component is manufactured by YAGEO rather than KOA Speer Electronics, but all functional and compliance parameters match.

Q: What are the key parameters that determine substitutability?

A: Substitutability is determined by exact matching of: resistance value (560 kOhms), tolerance (±1%), power rating (0.05W), package type (0201), physical dimensions (0.024" L x 0.012" W), temperature coefficient (±200ppm/°C), operating temperature range (-55°C ~ 155°C), AEC-Q200 automotive qualification, and RoHS3 compliance. Any deviation in these parameters disqualifies a part as a direct substitute.

Q: Does packaging format affect substitutability?

A: Packaging format (Tape & Reel vs. bulk) does not affect electrical or mechanical substitutability. However, it may impact procurement, handling, and assembly processes. The RK73H1HTTC5603F and AC0201FR-07560KL are both supplied in Tape & Reel format, while RK73H1HTTCM5603F packaging format is not specified. Verify packaging requirements with your procurement department before finalizing supplier selection.

Q: Are all substitute parts AEC-Q200 qualified?

A: Yes. All substitute parts listed (RK73H1HTTCM5603F and AC0201FR-07560KL) carry AEC-Q200 automotive qualification, matching the original RK73H1HTTC5603F. This qualification is mandatory for automotive applications and is maintained across all equivalent parts.

Q: What is the difference between RK73H1HTTC5603F and RK73H1HTTCM5603F?

A: The primary difference is product lifecycle status. RK73H1HTTC5603F is designated "Not For New Designs," indicating end-of-life status. RK73H1HTTCM5603F is "Active" and represents the current production equivalent. All electrical, mechanical, and compliance specifications are identical. The "M" designation in the part number indicates the active variant.