Equivalent & Substitute Parts for RK73H1HTTC9531F

Part Overview

The RK73H1HTTC9531F is a 9.53 kOhms ±1% thick film chip resistor manufactured by KOA Speer Electronics, Inc., designed for automotive applications with AEC-Q200 qualification. This 0201 package (0603 metric) component operates across -55°C to 155°C with 0.05W power rating and moisture-resistant construction.

The RK73H1HTTC9531F carries a "Not For New Designs" product status, indicating it has been superseded in the manufacturer's product line. 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

RK73H1HTTC9531F

KOA Speer Electronics, Inc.In Stock: 13673RK73H1HTTC9531F Datasheet

Current PartRFQ

RK73H1HTTCM9531F

KOA Speer Electronics, Inc.In Stock: 1233RK73H1HTTCM9531F Datasheet

MFR RecommendedRFQ

AC0201FR-079K53L

YAGEOIn Stock: 11514AC0201FR-079K53L Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RK73H1HTTC9531F is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 9.53 kOhms
• Tolerance: ±1%
• Power rating: 0.05W (1/20W)
• Package: 0201 (0603 Metric)
• Composition: Thick Film
• Temperature coefficient: ±200ppm/°C
• Operating temperature range: -55°C ~ 155°C
• Automotive qualification: AEC-Q200
• Moisture resistance: Required
• RoHS compliance: ROHS3
• Moisture sensitivity level: MSL 1

All identified substitute parts meet these parameters without exception. Substitution is based on functional and environmental equivalence, not on performance enhancement or cost optimization.

Parameter Comparison

Engineering Selection Recommendations

RK73H1HTTCM9531F (KOA Speer Electronics, Inc.): This part is the manufacturer-recommended successor to the RK73H1HTTC9531F. Both are KOA products with identical electrical and mechanical specifications. The primary distinction is product status: RK73H1HTTCM9531F carries "Active" status, indicating ongoing production and supply availability. This part is suitable for new designs and provides direct compatibility with existing designs using the legacy part number.

AC0201FR-079K53L (YAGEO): This YAGEO component provides cross-manufacturer equivalence with identical electrical parameters, package dimensions, and automotive certifications. AC0201FR-079K53L maintains "Active" product status and is available in Cut Tape and Digi-Reel packaging formats. This part serves as a viable alternative when KOA supply is constrained or when multi-source qualification is required.

Both substitute parts satisfy all mandatory electrical, mechanical, and compliance requirements. Selection between them depends on supply chain strategy, existing qualification documentation, and packaging requirements for manufacturing processes.

Frequently Asked Questions (FAQ)

Q: Can RK73H1HTTCM9531F directly replace RK73H1HTTC9531F in existing designs?

A: Yes. Both parts share identical electrical specifications (9.53 kOhms ±1%, 0.05W), package geometry (0201/0603 metric), temperature performance (-55°C to 155°C), and automotive qualifications (AEC-Q200). The primary difference is product lifecycle status; RK73H1HTTCM9531F is the active production equivalent.

Q: What is the difference between the two KOA part numbers?

A: RK73H1HTTC9531F is designated "Not For New Designs," while RK73H1HTTCM9531F carries "Active" status. Both are manufactured by KOA Speer Electronics with identical performance characteristics. The suffix change reflects product line management and supply continuity.

Q: Is AC0201FR-079K53L suitable for automotive applications?

A: Yes. AC0201FR-079K53L is AEC-Q200 qualified and rated for -55°C to 155°C operation. It meets all automotive reliability and environmental requirements equivalent to the KOA parts.

Q: Are there packaging differences between these substitutes?

A: RK73H1HTTC9531F is supplied in Tape & Reel (TR) format. RK73H1HTTCM9531F packaging is not specified in available data. AC0201FR-079K53L is available in Cut Tape (CT) and Digi-Reel® formats. Verify packaging compatibility with your assembly process before procurement.

Q: Do all three parts have the same moisture sensitivity rating?

A: Yes. All three parts carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions for storage or handling.

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

A: Yes, provided your manufacturing and qualification processes accommodate the packaging formats. All three parts have identical 0201 package dimensions (0.024" L x 0.012" W, 0.60mm x 0.30mm) and termination specifications.