Equivalent & Substitute Parts for RK73H1HTTC3652F

Part Overview

The RK73H1HTTC3652F is a 36.5 kOhms ±1% thick film chip resistor manufactured by KOA Speer Electronics, Inc. in the 0201 (0603 Metric) package format. This component is rated for 0.05W (1/20W) power dissipation and meets AEC-Q200 automotive qualification standards with moisture-resistant construction.

The RK73H1HTTC3652F carries a product status of "Not For New Designs," indicating it has been superseded in the manufacturer's active product line. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain flexibility, and support legacy system maintenance or redesign initiatives.

Substiute Parts

RK73H1HTTC3652F

KOA Speer Electronics, Inc.In Stock: 7157RK73H1HTTC3652F Datasheet

Current PartRFQ

RK73H1HTTCM3652F

KOA Speer Electronics, Inc.In Stock: 974RK73H1HTTCM3652F Datasheet

MFR RecommendedRFQ

AC0201FR-0736K5L

YAGEOIn Stock: 1136AC0201FR-0736K5L Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RK73H1HTTC3652F are qualified based on strict electrical and mechanical parameter matching:

Primary Substitution Criteria:

• Resistance value: 36.5 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 qualification: AEC-Q200 (exact match required)
• RoHS compliance: ROHS3 Compliant (exact match required)
• Moisture sensitivity: MSL 1 (exact match required)

Substitute parts must maintain identical electrical performance characteristics and physical dimensions to ensure direct replacement without circuit redesign or board layout modification.

Parameter Comparison

Engineering Selection Recommendations

RK73H1HTTCM3652F (MFR Recommended Substitute)

The RK73H1HTTCM3652F is the manufacturer-recommended successor to the RK73H1HTTC3652F, both from KOA Speer Electronics, Inc. This part maintains identical electrical specifications and physical dimensions. The primary distinction is active product status, making it the preferred choice for new procurement and design continuity. The RK73H1HTTCM3652F is ROHS3 compliant and carries MSL 1 rating. Note that moisture resistance is not explicitly specified for this variant, though both parts share the same series designation and core specifications.

AC0201FR-0736K5L (Direct Cross-Reference)

The AC0201FR-0736K5L from YAGEO provides a direct electrical and mechanical equivalent to the RK73H1HTTC3652F. This part is currently in active production status and meets all specified electrical parameters, including AEC-Q200 automotive qualification, ±1% tolerance, and ±200ppm/°C temperature coefficient. The AC0201FR-0736K5L explicitly includes moisture-resistant construction, matching the original part's environmental protection characteristics. ROHS3 compliance and MSL 1 rating are confirmed. This part is suitable for direct substitution in applications requiring automotive-grade 36.5 kOhms resistors in 0201 package format.

Both substitute parts are qualified for direct replacement based on matching all critical electrical, mechanical, and compliance parameters.

Frequently Asked Questions (FAQ)

Q: Can RK73H1HTTCM3652F be used as a direct replacement for RK73H1HTTC3652F?

A: Yes. Both parts are manufactured by KOA Speer Electronics, Inc., share identical resistance (36.5 kOhms), tolerance (±1%), power rating (0.05W), package (0201), composition (thick film), temperature coefficient (±200ppm/°C), operating range (-55°C ~ 155°C), AEC-Q200 rating, RoHS compliance, and MSL rating. The RK73H1HTTCM3652F is the active production equivalent.

Q: Is AC0201FR-0736K5L from YAGEO compatible with the original KOA part?

A: Yes. The AC0201FR-0736K5L matches all critical specifications: 36.5 kOhms resistance, ±1% tolerance, 0.05W power rating, 0201 package, thick film composition, ±200ppm/°C temperature coefficient, -55°C ~ 155°C operating range, AEC-Q200 automotive qualification, moisture resistance, ROHS3 compliance, and MSL 1 rating. Physical dimensions and termination count are identical.

Q: Why is the original RK73H1HTTC3652F marked "Not For New Designs"?

A: This designation indicates the part has been superseded by newer variants in the manufacturer's product line. The RK73H1HTTCM3652F is the active replacement. For new designs, the active-status substitute should be specified.

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

A: The RK73H1HTTC3652F and AC0201FR-0736K5L both explicitly specify moisture-resistant construction. The RK73H1HTTCM3652F does not explicitly state moisture resistance in the provided specifications, though both KOA parts share the same series and core design.

Q: Can these parts be used interchangeably on the same PCB assembly?

A: Yes. All three parts share identical 0201 (0603 Metric) package dimensions: 0.024" L x 0.012" W (0.60mm x 0.30mm) with maximum seated height of 0.010" (0.26mm). They have two terminations and are suitable for direct PCB footprint compatibility without layout modification.

Q: What compliance certifications apply to all substitute parts?

A: All parts are ROHS3 compliant, carry AEC-Q200 automotive qualification, and have MSL 1 (Unlimited) moisture sensitivity rating. REACH status is unaffected for all parts, and ECCN classification is EAR99.