RK73H1HTTC3480F Equivalent & Substitute Parts

Part Overview

The RK73H1HTTC3480F is a 348 Ohm ±1% 0.05W chip resistor in 0201 package (0603 Metric) manufactured by KOA Speer Electronics, Inc. This component is a thick film, automotive-grade resistor with AEC-Q200 qualification and moisture resistance. The part is classified as "Not For New Designs," indicating it has been superseded in the manufacturer's product line.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 legacy designs, inventory management, and sourcing optimization while maintaining electrical and mechanical compatibility.

Substiute Parts

RK73H1HTTC3480F

KOA Speer Electronics, Inc.In Stock: 12448RK73H1HTTC3480F Datasheet

Current PartRFQ

RK73H1HTTCM3480F

KOA Speer Electronics, Inc.In Stock: 913RK73H1HTTCM3480F Datasheet

MFR RecommendedRFQ

AC0201FR-07348RL

YAGEOIn Stock: 960AC0201FR-07348RL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RK73H1HTTC3480F is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Resistance value: 348 Ohms (exact match required)
• Tolerance: ±1% (exact match required)
• Power rating: 0.05W / 1/20W (exact match required)
• Temperature coefficient: ±200ppm/°C (exact match required)
• Operating temperature range: -55°C ~ 155°C (exact match required)

Mechanical Parameters:

• Package / Case: 0201 (0603 Metric) (exact match required)
• Physical dimensions: 0.024" L x 0.012" W / 0.60mm x 0.30mm (exact match required)
• Height - Seated (Max): 0.010" (0.26mm) (exact match required)
• Number of terminations: 2 (exact match required)

Compliance & Certification:

• Composition: Thick Film (exact match required)
• Automotive rating: AEC-Q200 (exact match required)
• Moisture resistance: Yes (exact match required)
• RoHS Status: ROHS3 Compliant (exact match required)
• Moisture Sensitivity Level: MSL 1 (exact match required)

All identified substitute parts meet these criteria without exception.

Parameter Comparison

Engineering Selection Recommendations

RK73H1HTTCM3480F (KOA Speer Electronics, Inc.): This part is the manufacturer-recommended substitute from KOA Speer Electronics, Inc. It maintains active product status and provides full electrical and mechanical equivalence to the main part. The primary distinction is the absence of explicit moisture resistance specification in the provided data, though all other parameters including MSL 1 rating are identical. This part is suitable for direct replacement in applications where the original RK73H1HTTC3480F is specified.

AC0201FR-07348RL (YAGEO): This part is a cross-manufacturer equivalent from YAGEO with active product status. It provides complete electrical and mechanical compatibility with the main part, including explicit moisture resistance specification and AEC-Q200 automotive qualification. The AC0201FR-07348RL is suitable for applications requiring a second-source option or when YAGEO supply chain availability is preferred. Both Tape & Reel packaging and full compliance certifications are confirmed.

Both substitute parts are appropriate for legacy design support and ongoing production. Selection between them should be based on supply chain availability, cost considerations, and existing qualification documentation within the design organization.

Frequently Asked Questions (FAQ)

Q: Can RK73H1HTTCM3480F be used as a direct replacement for RK73H1HTTC3480F?

A: Yes. The RK73H1HTTCM3480F is the manufacturer-recommended substitute and provides complete electrical and mechanical equivalence. All critical parameters including resistance, tolerance, power rating, temperature coefficient, operating temperature range, package dimensions, and AEC-Q200 automotive qualification are identical.

Q: What is the difference between RK73H1HTTC3480F and RK73H1HTTCM3480F?

A: The primary difference is product status. RK73H1HTTC3480F is classified as "Not For New Designs," while RK73H1HTTCM3480F is Active. The "M" designation in the part number indicates a variant within the same RK73H series. All electrical specifications and package dimensions are equivalent.

Q: Can AC0201FR-07348RL from YAGEO replace the KOA part?

A: Yes. AC0201FR-07348RL meets all electrical and mechanical requirements for substitution. It provides 348 Ohms ±1% at 0.05W in 0201 package with identical temperature coefficient, operating range, AEC-Q200 rating, and MSL 1 classification. The primary consideration is cross-manufacturer qualification within your design documentation.

Q: Are there any packaging differences between the substitute parts?

A: RK73H1HTTC3480F and AC0201FR-07348RL are both specified in Tape & Reel (TR) packaging. RK73H1HTTCM3480F packaging is not specified in the provided data. Confirm packaging requirements with your procurement process before finalizing orders.

Q: Why is RK73H1HTTC3480F marked "Not For New Designs"?

A: This designation indicates the part has been superseded in the manufacturer's active product line. RK73H1HTTCM3480F is the active replacement. For new designs, use RK73H1HTTCM3480F or AC0201FR-07348RL. For legacy design support, RK73H1HTTC3480F remains available while inventory exists.

Q: Are all substitute parts AEC-Q200 qualified?

A: Yes. RK73H1HTTC3480F, RK73H1HTTCM3480F, and AC0201FR-07348RL all carry AEC-Q200 automotive qualification. This certification is maintained across all substitute options.

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

A: MSL 1 indicates the component has unlimited shelf life and requires no special moisture control during storage or handling. All three parts carry this rating, eliminating moisture sensitivity as a substitution constraint.

Q: Can these parts be used interchangeably in PCB assembly?

A: Yes, within the constraints of your design qualification. All parts are 0201 package (0603 Metric) with identical physical dimensions (0.024" L x 0.012" W, height 0.010" max). PCB footprints and assembly processes are compatible. Verify cross-manufacturer substitution is approved in your design documentation before implementation.