Equivalent & Substitute Parts for RK73H1HTTC6492F

Part Overview

The RK73H1HTTC6492F is a 64.9 kOhms ±1% chip resistor manufactured by KOA Speer Electronics, Inc., rated at 0.05W (1/20W) in a 0201 package (0.60mm x 0.30mm). This thick film resistor meets automotive AEC-Q200 standards and features moisture resistance for demanding applications.

The RK73H1HTTC6492F carries a "Not For New Designs" product status, indicating it has been superseded. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and transition to active production components where applicable.

Substiute Parts

RK73H1HTTC6492F

KOA Speer Electronics, Inc.In Stock: 86261RK73H1HTTC6492F Datasheet

Current PartRFQ

RK73H1HTTCM6492F

KOA Speer Electronics, Inc.In Stock: 1037RK73H1HTTCM6492F Datasheet

MFR RecommendedRFQ

AC0201FR-0764K9L

YAGEOIn Stock: 2893AC0201FR-0764K9L Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RK73H1HTTC6492F is determined by strict equivalence across the following electrical and mechanical parameters:

Critical Substitution Criteria:

• Resistance value: 64.9 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)
• Temperature coefficient: ±200ppm/°C (exact match required)
• Operating temperature range: -55°C ~ 155°C (exact match required)
• Automotive compliance: AEC-Q200 (exact match required)
• Composition: Thick Film (exact match required)
• RoHS compliance: ROHS3 Compliant (exact match required)

Substitute parts must satisfy all criteria listed above. Deviations in any parameter disqualify a part from direct substitution.

Parameter Comparison

Engineering Selection Recommendations

RK73H1HTTCM6492F (KOA Speer Electronics, Inc. - MFR Recommended Substitute)

This part is the manufacturer-recommended successor to the RK73H1HTTC6492F. It maintains identical electrical specifications and automotive AEC-Q200 compliance. The primary distinction is active product status, making it the preferred choice for new designs and ongoing production. However, this variant does not specify moisture resistance in its feature set, whereas the original part explicitly includes this characteristic. For applications requiring moisture resistance as a critical parameter, this substitution requires design review.

AC0201FR-0764K9L (YAGEO - Direct Substitute)

This YAGEO part provides full electrical and mechanical equivalence to the RK73H1HTTC6492F, including moisture resistance and AEC-Q200 automotive compliance. It carries active product status and maintains higher inventory availability (2845 pcs). This part is suitable for direct substitution in existing designs and new applications requiring the specified parameter set.

Both substitute parts satisfy the core substitution criteria. Selection between them depends on supply chain preferences, inventory requirements, and design-specific moisture resistance needs.

Frequently Asked Questions (FAQ)

Q: Can RK73H1HTTCM6492F be used as a direct replacement for RK73H1HTTC6492F?

A: RK73H1HTTCM6492F matches all critical electrical and mechanical parameters. However, the original part specifies moisture resistance while the substitute does not explicitly list this feature. For applications where moisture resistance is a design requirement, this difference must be evaluated before substitution.

Q: What is the difference between RK73H1HTTC6492F and AC0201FR-0764K9L?

A: Both parts are electrically and mechanically equivalent with identical resistance, tolerance, power rating, package, temperature coefficient, and operating range. Both meet AEC-Q200 automotive standards and are ROHS3 compliant. The primary differences are manufacturer (KOA vs. YAGEO) and product status (Not For New Designs vs. Active). AC0201FR-0764K9L explicitly includes moisture resistance and has higher inventory availability.

Q: Are all three parts interchangeable in automotive applications?

A: All three parts meet AEC-Q200 automotive compliance and operate across the -55°C ~ 155°C temperature range. They are electrically and mechanically interchangeable within this specification envelope. Substitution decisions should account for supply chain continuity, inventory levels, and any design-specific requirements such as moisture resistance.

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

A: This status indicates the RK73H1HTTC6492F has been superseded by newer variants. For new designs, RK73H1HTTCM6492F or AC0201FR-0764K9L are recommended to ensure long-term supply availability and alignment with current manufacturing standards.

Q: Does package size differ between these parts?

A: No. All three parts use the 0201 package (0603 Metric), with identical dimensions of 0.024" L x 0.012" W (0.60mm x 0.30mm) and maximum seated height of 0.010" (0.26mm).

Q: What is the significance of MSL 1 (Unlimited) rating?

A: MSL 1 indicates the lowest moisture sensitivity level, meaning the component has unlimited shelf life without special moisture control measures. All three parts carry this rating, ensuring consistent handling and storage requirements.