RK73H1HTTC5104F Equivalent & Substitute Parts

Part Overview

The RK73H1HTTC5104F is a 5.1 MOhm ±1% thick film chip resistor in 0201 package (0603 metric) rated for 0.05W power dissipation. This component is manufactured by KOA Speer Electronics, Inc. and meets AEC-Q200 automotive qualification standards with moisture-resistant construction.

The RK73H1HTTC5104F carries a "Not For New Designs" product status, indicating that KOA Speer Electronics has transitioned this part to end-of-life. Identifying equivalent substitute parts is necessary for ongoing production support, maintenance applications, and design continuity where this resistor specification remains functionally required.

Substiute Parts

RK73H1HTTC5104F

KOA Speer Electronics, Inc.In Stock: 1040RK73H1HTTC5104F Datasheet

Current PartRFQ

RK73H1HTTCM5104F

KOA Speer Electronics, Inc.In Stock: 745RK73H1HTTCM5104F Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RK73H1HTTC5104F is determined by strict equivalence across the following critical parameters:

Electrical Parameters: Resistance value (5.1 MOhms), tolerance (±1%), and power rating (0.05W) must be identical. Temperature coefficient (±200ppm/°C) and operating temperature range (-55°C to 155°C) establish thermal performance boundaries.

Mechanical Parameters: Package designation (0201/0603 metric), physical dimensions (0.024" L × 0.012" W, 0.26mm max height), and termination count (2) must match exactly to ensure PCB compatibility and assembly process compatibility.

Compliance & Quality Parameters: AEC-Q200 automotive qualification, thick film composition, moisture resistance (MSL 1), ROHS3 compliance, and REACH unaffected status define the quality and regulatory framework.

The substitute part RK73H1HTTCM5104F meets all these criteria and represents the active production equivalent within the RK73H series.

Parameter Comparison

Engineering Selection Recommendations

The RK73H1HTTCM5104F is the direct functional equivalent and recommended substitute for the RK73H1HTTC5104F. Both parts are manufactured by KOA Speer Electronics within the RK73H series and share identical electrical, mechanical, and thermal specifications.

The primary distinction is product lifecycle status: RK73H1HTTC5104F is designated "Not For New Designs," while RK73H1HTTCM5104F maintains "Active" status. This indicates that RK73H1HTTCM5104F represents the current production part and is the appropriate selection for ongoing applications requiring this 5.1 MOhm 0201 resistor specification.

Both parts maintain AEC-Q200 automotive qualification, ROHS3 compliance, and MSL 1 moisture sensitivity rating, ensuring compatibility with automotive and industrial applications. The substitute part is available in higher inventory (733 pcs) compared to the legacy part (1022 pcs), supporting production continuity.

Frequently Asked Questions (FAQ)

Q: Can RK73H1HTTCM5104F be used as a direct replacement for RK73H1HTTC5104F in existing designs?

A: Yes. Both parts are electrically and mechanically identical with matching resistance (5.1 MOhms ±1%), power rating (0.05W), package (0201), temperature coefficient (±200ppm/°C), and operating range (-55°C to 155°C). PCB layout and assembly processes require no modification.

Q: What is the significance of the "Not For New Designs" status on RK73H1HTTC5104F?

A: This designation indicates that KOA Speer Electronics has transitioned the part to end-of-life status. New product designs should specify RK73H1HTTCM5104F. Existing designs using RK73H1HTTC5104F may continue with the substitute part for production support and maintenance.

Q: Are there any compliance or certification differences between these parts?

A: No. Both parts carry identical certifications: AEC-Q200 automotive qualification, ROHS3 compliance, REACH unaffected status, and MSL 1 moisture sensitivity rating. Regulatory and quality requirements are equivalent.

Q: Does the 0201 package dimension match standard PCB footprints?

A: Yes. Both parts use the 0201 package (0603 metric equivalent) with dimensions 0.024" L × 0.012" W (0.60mm × 0.30mm) and maximum seated height of 0.010" (0.26mm). This package is standard in automotive and industrial applications and matches conventional 0201 PCB footprints.

Q: What is the difference between the part numbers RK73H1HTTC5104F and RK73H1HTTCM5104F?

A: The difference is indicated by the "M" character in the substitute part number (RK73H1HTTCM5104F). This character denotes a product lifecycle or manufacturing variant within the RK73H series. The electrical and mechanical specifications remain identical. The "M" variant represents the current active production part.