Equivalent & Substitute Parts for RK73H1HTTC3241F

Part Overview

The RK73H1HTTC3241F is a 3.24 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 with an operating temperature range of -55°C to 155°C.

The RK73H1HTTC3241F carries a product status of "Not For New Designs," indicating that while the part remains in inventory, KOA Speer Electronics has transitioned this model line. Identifying equivalent and substitute parts is necessary to support ongoing production requirements, maintenance operations, and design continuity for existing applications utilizing this resistor specification.

Substiute Parts

RK73H1HTTC3241F

KOA Speer Electronics, Inc.In Stock: 31350RK73H1HTTC3241F Datasheet

Current PartRFQ

RK73H1HTTCM3241F

KOA Speer Electronics, Inc.In Stock: 1053RK73H1HTTCM3241F Datasheet

MFR RecommendedRFQ

AC0201FR-073K24L

YAGEOIn Stock: 10856AC0201FR-073K24L Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RK73H1HTTC3241F is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 3.24 kOhms
• Tolerance: ±1%
• Power rating: 0.05W (1/20W)
• Package format: 0201 (0603 Metric)
• Composition: Thick Film
• Temperature coefficient: ±200ppm/°C
• Operating temperature range: -55°C to 155°C
• Automotive rating: AEC-Q200
• Moisture resistance: Required
• RoHS compliance: ROHS3 Compliant
• MSL rating: 1 (Unlimited)

Two substitute parts meet these criteria and are identified as direct functional equivalents:

1. RK73H1HTTCM3241F (KOA Speer Electronics, Inc.) — MFR Recommended substitute with Active product status
2. AC0201FR-073K24L (YAGEO) — Direct manufacturer alternative with Active product status

Both substitutes maintain identical electrical specifications, mechanical dimensions, and compliance certifications as the original part.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: RK73H1HTTCM3241F

The RK73H1HTTCM3241F is the manufacturer-recommended substitute from KOA Speer Electronics, Inc. This part carries Active product status, ensuring continued availability and manufacturing support. It maintains identical electrical and mechanical specifications to the original RK73H1HTTC3241F while providing a direct upgrade path from a "Not For New Designs" component. The part is fully compliant with ROHS3 and AEC-Q200 automotive standards.

Secondary Recommendation: AC0201FR-073K24L

The AC0201FR-073K24L from YAGEO provides an alternative cross-manufacturer substitute with Active product status. This part meets all critical electrical parameters, maintains AEC-Q200 automotive qualification, and includes moisture-resistant construction. YAGEO's AC series offers established supply chain availability and is suitable for applications requiring multi-source component qualification.

Selection Criteria:

• For continued support within the KOA Speer Electronics product ecosystem, select RK73H1HTTCM3241F
• For multi-source supply chain resilience, select AC0201FR-073K24L
• Both parts are suitable for direct replacement in existing designs utilizing RK73H1HTTC3241F
• Both parts maintain compliance with automotive and environmental standards required for the original application

Frequently Asked Questions (FAQ)

Q: Can RK73H1HTTCM3241F directly replace RK73H1HTTC3241F in existing designs?

A: Yes. The RK73H1HTTCM3241F is electrically and mechanically identical to the RK73H1HTTC3241F. Both parts share the same resistance value (3.24 kOhms), tolerance (±1%), power rating (0.05W), package format (0201), temperature coefficient (±200ppm/°C), operating temperature range (-55°C to 155°C), and AEC-Q200 automotive qualification. Direct substitution is supported without circuit redesign.

Q: What is the difference between RK73H1HTTC3241F and RK73H1HTTCM3241F?

A: The primary difference is product status. RK73H1HTTC3241F is marked "Not For New Designs," while RK73H1HTTCM3241F carries Active status. The "M" designation in the part number indicates the active variant within the RK73H series. Electrical and mechanical specifications are equivalent.

Q: Can YAGEO AC0201FR-073K24L be used as a substitute?

A: Yes. The AC0201FR-073K24L meets all mandatory electrical and mechanical parameters: 3.24 kOhms ±1%, 0.05W power rating, 0201 package, ±200ppm/°C temperature coefficient, -55°C to 155°C operating range, AEC-Q200 automotive rating, and ROHS3 compliance. This part is suitable for direct replacement and provides cross-manufacturer supply diversity.

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

A: The RK73H1HTTC3241F and AC0201FR-073K24L both specify moisture-resistant construction. The RK73H1HTTCM3241F does not explicitly specify moisture resistance in the provided data. For applications requiring confirmed moisture resistance, AC0201FR-073K24L or the original RK73H1HTTC3241F are preferred.

Q: What is the MSL (Moisture Sensitivity Level) rating for these parts?

A: All three parts carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions during storage, handling, or assembly. These components do not require special moisture control measures or baking procedures prior to soldering.

Q: Are all substitute parts AEC-Q200 qualified?

A: Yes. RK73H1HTTCM3241F, AC0201FR-073K24L, and the original RK73H1HTTC3241F all carry AEC-Q200 automotive qualification. This certification confirms suitability for automotive applications within the specified operating temperature range.

Q: What is the physical size of these resistors?

A: All three parts use the 0201 (0603 Metric) package format with dimensions of 0.024" L x 0.012" W (0.60mm x 0.30mm) and maximum seated height of 0.010" (0.26mm). PCB footprints and assembly processes are identical across all three parts.

Q: Which substitute should be selected for new production?

A: For new production designs, RK73H1HTTCM3241F is recommended as the primary choice due to its Active product status and manufacturer support from KOA Speer Electronics. AC0201FR-073K24L is suitable as a secondary or alternative source for supply chain resilience.