Equivalent & Substitute Parts for RK73H1HTTC25R5F

Part Overview

The RK73H1HTTC25R5F is a 25.5 Ohm ±1% thick film chip resistor manufactured by KOA Speer Electronics, Inc., rated at 0.05W (1/20W) in the 0201 (0603 Metric) package. This component is designed for automotive applications and meets AEC-Q200 qualification standards with moisture-resistant construction. The part is currently classified as Not For New Designs, indicating it has been superseded. Identifying equivalent and substitute parts is necessary for ongoing production support, legacy system maintenance, and design flexibility when the primary part becomes unavailable.

Substiute Parts

RK73H1HTTC25R5F

KOA Speer Electronics, Inc.In Stock: 14762RK73H1HTTC25R5F Datasheet

Current PartRFQ

RK73H1HTTCM25R5F

KOA Speer Electronics, Inc.In Stock: 809RK73H1HTTCM25R5F Datasheet

MFR RecommendedRFQ

AC0201FR-0725R5L

YAGEOIn Stock: 1211AC0201FR-0725R5L Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RK73H1HTTC25R5F are qualified based on strict electrical and mechanical parameter matching:

Substitution Criteria:

• Resistance value: 25.5 Ohms (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)

All identified substitute parts meet these criteria and are therefore electrically and mechanically interchangeable with the main part number.

Parameter Comparison

Engineering Selection Recommendations

RK73H1HTTCM25R5F (KOA Speer Electronics, Inc. - MFR Recommended): This part is the manufacturer-recommended substitute from KOA Speer Electronics, Inc. It maintains Active product status and meets all electrical and mechanical specifications identical to the main part. The primary distinction is the absence of explicit moisture-resistant designation in the detailed description, though MSL rating remains MSL 1 (Unlimited). This part is suitable for direct replacement in new production and ongoing support applications.

AC0201FR-0725R5L (YAGEO - Direct Manufacturer Alternative): This YAGEO part provides an alternative from a different manufacturer while maintaining all critical electrical parameters and AEC-Q200 automotive qualification. It retains the moisture-resistant feature and Active product status. This part is suitable for applications requiring multi-source qualification or when KOA supply is constrained. The AC series designation indicates YAGEO's automotive-grade thick film resistor line.

Both substitute parts are ROHS3 compliant, maintain MSL 1 rating, and operate across the identical temperature range (-55°C ~ 155°C). Selection between them should be based on supply availability, existing qualification documentation, and procurement preferences.

Frequently Asked Questions (FAQ)

Q: Can RK73H1HTTCM25R5F be used as a direct replacement for RK73H1HTTC25R5F? A: Yes. Both parts share identical electrical specifications (25.5 Ohms ±1%, 0.05W), package dimensions (0201 / 0603 Metric), temperature coefficient (±200ppm/°C), operating range (-55°C ~ 155°C), and AEC-Q200 automotive qualification. The primary difference is product status: RK73H1HTTCM25R5F is Active, while RK73H1HTTC25R5F is Not For New Designs.

Q: What is the difference between RK73H1HTTC25R5F and AC0201FR-0725R5L? A: Both parts are electrically and mechanically identical in all critical parameters: 25.5 Ohms ±1%, 0.05W, 0201 package, ±200ppm/°C temperature coefficient, -55°C ~ 155°C operating range, and AEC-Q200 rating. The difference is manufacturer: KOA Speer Electronics, Inc. versus YAGEO. Both are ROHS3 compliant with MSL 1 rating.

Q: Are these parts suitable for automotive applications? A: Yes. All three parts carry AEC-Q200 automotive qualification, which certifies them for automotive-grade reliability and performance standards. They are suitable for automotive circuit applications within the specified operating temperature range.

Q: What does MSL 1 (Unlimited) mean for moisture sensitivity? A: MSL 1 indicates the lowest moisture sensitivity level. These parts can be stored indefinitely without moisture bake-out requirements prior to soldering, providing maximum handling flexibility in manufacturing environments.

Q: Can I substitute these parts in existing designs without re-qualification? A: Substitution between parts with identical electrical and mechanical parameters does not require design re-qualification. However, procurement and supply chain documentation should be updated to reflect the new part number. Existing AEC-Q200 qualification applies to all three parts.

Q: What is the significance of the 0201 package designation? A: The 0201 package (0603 Metric) is a surface-mount chip resistor measuring 0.024" L x 0.012" W (0.60mm x 0.30mm). This ultra-compact size is standard across all three parts and ensures mechanical compatibility with existing PCB layouts and assembly equipment.