RK73H1HTTC4640F Equivalent & Substitute Parts

Part Overview

The RK73H1HTTC4640F is a 464 Ohm ±1% 0.05W (1/20W) chip resistor in 0201 package (0603 Metric) manufactured by KOA Speer Electronics, Inc. This component features automotive AEC-Q200 qualification, moisture resistance, and thick film construction. The part is currently classified as Not For New Designs, indicating it has been superseded in the manufacturer's product line. Identifying equivalent and substitute parts is necessary for ongoing support of existing designs, legacy system maintenance, and procurement continuity when original stock becomes unavailable.

Substiute Parts

RK73H1HTTC4640F

KOA Speer Electronics, Inc.In Stock: 25266RK73H1HTTC4640F Datasheet

Current PartRFQ

RK73H1HTTCM4640F

KOA Speer Electronics, Inc.In Stock: 1125RK73H1HTTCM4640F Datasheet

MFR RecommendedRFQ

AC0201FR-07464RL

YAGEOIn Stock: 962AC0201FR-07464RL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RK73H1HTTC4640F are qualified based on strict electrical and mechanical parameter matching:

Substitution Criteria:

• Resistance value: 464 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)
• Temperature coefficient: ±200ppm/°C (exact match required)
• Operating temperature range: -55°C ~ 155°C (exact match required)
• Automotive qualification: AEC-Q200 (required for automotive applications)
• Composition: Thick Film (exact match required)
• RoHS compliance: ROHS3 Compliant (required for regulatory compliance)
• Moisture Sensitivity Level: 1 (Unlimited) (exact match required)

Substitute parts are grouped into two categories:

Category 1 - Manufacturer Recommended Substitute: RK73H1HTTCM4640F from KOA Speer Electronics, Inc. represents the direct manufacturer upgrade path, maintaining the same series lineage (RK73H) with active product status.

Category 2 - Direct Cross-Reference Substitute: AC0201FR-07464RL from YAGEO provides equivalent electrical and mechanical specifications from an alternative qualified manufacturer, with active product status and full automotive compliance.

Parameter Comparison

Engineering Selection Recommendations

For Continued Support of Existing Designs:

The RK73H1HTTCM4640F from KOA Speer Electronics, Inc. is the primary recommended substitute. This part maintains manufacturer lineage within the RK73H series and carries active product status, ensuring long-term availability and supply chain stability. It satisfies all electrical and mechanical requirements identical to the original RK73H1HTTC4640F, with full AEC-Q200 automotive qualification and ROHS3 compliance.

For Multi-Source Procurement Strategy:

The AC0201FR-07464RL from YAGEO provides a qualified alternative from a different manufacturer. This part meets all specified electrical parameters, maintains identical package dimensions, and carries active product status with full automotive AEC-Q200 certification and ROHS3 compliance. The inclusion of moisture resistance specification aligns with the original part's feature set.

Selection Basis:

Both substitute parts are selected based on:

• Exact electrical parameter matching (resistance, tolerance, power rating, temperature coefficient)
• Identical mechanical package specifications (0201 / 0603 Metric)
• Matching operating temperature range (-55°C ~ 155°C)
• Automotive qualification (AEC-Q200)
• Regulatory compliance (ROHS3, REACH Unaffected)
• Active product status ensuring procurement continuity

The original RK73H1HTTC4640F classification as "Not For New Designs" does not affect the validity of these substitutes for existing applications where the part is already in use.

Frequently Asked Questions (FAQ)

Q: Can RK73H1HTTCM4640F be used as a direct replacement for RK73H1HTTC4640F?

A: Yes. The RK73H1HTTCM4640F is the manufacturer-recommended substitute from KOA Speer Electronics, Inc. It matches all critical electrical parameters (464 Ohms ±1%, 0.05W, ±200ppm/°C), maintains identical package dimensions (0201 / 0603 Metric), and carries the same AEC-Q200 automotive qualification and ROHS3 compliance. The part is currently in active production status.

Q: What is the difference between RK73H1HTTC4640F and RK73H1HTTCM4640F?

A: Both parts are 464 Ohm ±1% 0.05W thick film resistors in 0201 package with AEC-Q200 qualification. The primary difference is product status: RK73H1HTTC4640F is classified as Not For New Designs, while RK73H1HTTCM4640F is Active. The "M" designation in the part number indicates the updated version. Electrical and mechanical specifications are identical.

Q: Is AC0201FR-07464RL compatible with designs using RK73H1HTTC4640F?

A: Yes. The AC0201FR-07464RL from YAGEO meets all specified electrical and mechanical requirements: 464 Ohms ±1%, 0.05W power rating, ±200ppm/°C temperature coefficient, 0201 package, -55°C ~ 155°C operating range, AEC-Q200 automotive qualification, and ROHS3 compliance. It is suitable for direct substitution in existing applications.

Q: Why is moisture resistance specified for some parts but not others?

A: Moisture resistance is an optional feature specification. The RK73H1HTTC4640F and AC0201FR-07464RL both explicitly specify moisture resistance. The RK73H1HTTCM4640F does not include this specification in the provided data. All three parts carry MSL Rating 1 (Unlimited), indicating they do not require special moisture control during storage or handling.

Q: Are all three parts suitable for automotive applications?

A: Yes. All three parts carry AEC-Q200 automotive qualification, which certifies compliance with automotive industry reliability and quality standards. They are suitable for use in automotive electronic systems requiring this certification level.

Q: What is the significance of the 0201 package designation?

A: The 0201 package (0603 Metric) is a surface-mount chip resistor with dimensions of 0.024" L x 0.012" W (0.60mm x 0.30mm) and maximum seated height of 0.010" (0.26mm). All three substitute parts use identical package specifications, ensuring mechanical compatibility with existing PCB layouts and assembly processes.

Q: Can these parts be used interchangeably in production?

A: Yes, within the constraints of your supply chain and procurement procedures. Both RK73H1HTTCM4640F and AC0201FR-07464RL are active products with equivalent specifications. Qualification of alternative manufacturers may be required per your organization's engineering change control procedures.