Equivalent & Substitute Parts for RK73H1HTTC9101F

Part Overview

The RK73H1HTTC9101F is a 9.1 kOhms ±1% thick film chip resistor manufactured by KOA Speer Electronics, Inc. in the 0201 (0603 Metric) package format. This component is rated for 0.05W (1/20W) power dissipation and meets AEC-Q200 automotive qualification standards with moisture-resistant construction.

The RK73H1HTTC9101F carries a product status of "Not For New Designs," indicating that KOA Speer Electronics has transitioned this part to end-of-life status. Identifying equivalent and substitute parts is necessary for ongoing production support, maintenance applications, and design continuity where this resistor is currently specified in active systems.

Substiute Parts

RK73H1HTTC9101F

KOA Speer Electronics, Inc.In Stock: 10221RK73H1HTTC9101F Datasheet

Current PartRFQ

RK73H1HTTCM9101F

KOA Speer Electronics, Inc.In Stock: 703RK73H1HTTCM9101F Datasheet

MFR RecommendedRFQ

AC0201FR-079K1L

YAGEOIn Stock: 9537AC0201FR-079K1L Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RK73H1HTTC9101F is determined by strict equivalence across the following electrical and mechanical parameters:

Critical Matching Parameters:

• Resistance value: 9.1 kOhms
• Tolerance: ±1%
• Power rating: 0.05W (1/20W)
• Package format: 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 Compliant
• Moisture Sensitivity Level: MSL 1

All substitute parts listed below meet these parameters without exception. Substitutes are grouped by manufacturer and product status to facilitate selection based on availability and design phase requirements.

Parameter Comparison

Engineering Selection Recommendations

For Active Production and New Designs:

The RK73H1HTTCM9101F (KOA Speer Electronics, Inc.) is the manufacturer-recommended substitute. This part maintains identical electrical specifications and physical dimensions while carrying an Active product status. It is suitable for new design implementations and ongoing production where KOA Speer Electronics components are specified.

For Cross-Manufacturer Substitution:

The AC0201FR-079K1L (YAGEO) provides a direct functional equivalent with Active product status. This part meets all electrical and mechanical requirements, including AEC-Q200 automotive qualification, moisture resistance, and ROHS3 compliance. Cross-manufacturer substitution is appropriate where supply chain diversification or YAGEO component standardization is required.

For Legacy System Support:

The RK73H1HTTC9101F remains available in inventory (10,142 pcs) for applications requiring exact part number continuity. However, given its "Not For New Designs" status, transition to RK73H1HTTCM9101F or AC0201FR-079K1L is recommended for long-term supply security.

All three parts are electrically and mechanically interchangeable within the specified parameter set. Selection should be based on manufacturer preference, supply availability, and design phase requirements.

Frequently Asked Questions (FAQ)

Q: Can RK73H1HTTCM9101F replace RK73H1HTTC9101F in existing designs?

A: Yes. Both parts are manufactured by KOA Speer Electronics, Inc. and share identical electrical specifications (9.1 kOhms ±1%, 0.05W, ±200ppm/°C), physical dimensions (0201 package), and automotive qualifications (AEC-Q200). The primary difference is product status: RK73H1HTTCM9101F is Active, while RK73H1HTTC9101F is Not For New Designs.

Q: Is AC0201FR-079K1L (YAGEO) compatible with RK73H1HTTC9101F?

A: Yes. AC0201FR-079K1L meets all critical parameters: 9.1 kOhms ±1%, 0.05W power rating, 0201 package format, ±200ppm/°C temperature coefficient, -55°C ~ 155°C operating range, AEC-Q200 automotive rating, moisture resistance, ROHS3 compliance, and MSL 1 rating. Physical dimensions and termination count are identical.

Q: What is the difference between RK73H1HTTC9101F and RK73H1HTTCM9101F?

A: The primary difference is moisture resistance specification. RK73H1HTTC9101F includes moisture-resistant construction, while RK73H1HTTCM9101F does not explicitly list this feature. Both parts are otherwise electrically and mechanically equivalent. RK73H1HTTCM9101F carries Active product status, making it the recommended choice for new designs.

Q: Can these 0201 package resistors be used interchangeably on PCBs?

A: Yes. All three parts share identical physical dimensions (0.024" L x 0.012" W / 0.60mm x 0.30mm) and maximum seated height (0.010" / 0.26mm). They are mechanically interchangeable on PCBs designed for 0201 (0603 Metric) package format.

Q: Are all substitute parts AEC-Q200 qualified?

A: Yes. RK73H1HTTC9101F, RK73H1HTTCM9101F, and AC0201FR-079K1L all carry AEC-Q200 automotive qualification ratings, meeting automotive industry reliability and quality standards.

Q: What is the MSL rating for these resistors?

A: All three parts are rated MSL 1 (Unlimited), indicating unlimited shelf life without moisture bake-out requirements. This simplifies inventory management and reduces handling constraints.

Q: Are these parts RoHS compliant?

A: Yes. All three parts are ROHS3 Compliant, meeting European Union Restriction of Hazardous Substances regulations.