RK73H1HTTC8660F Equivalent & Substitute Parts

Part Overview

The RK73H1HTTC8660F is a 866 Ohm ±1% thick film chip resistor manufactured by KOA Speer Electronics, Inc., rated at 0.05W (1/20W) in a 0201 package (0603 Metric). This component is designed for automotive applications and meets AEC-Q200 qualification standards with moisture-resistant construction.

The RK73H1HTTC8660F carries a "Not For New Designs" product status, indicating it has been superseded in the manufacturer's product line.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 for ongoing support of existing designs, legacy system maintenance, and procurement continuity when original inventory becomes unavailable.

Substiute Parts

RK73H1HTTC8660F

KOA Speer Electronics, Inc.In Stock: 12214RK73H1HTTC8660F Datasheet

Current PartRFQ

RK73H1HTTCM8660F

KOA Speer Electronics, Inc.In Stock: 790RK73H1HTTCM8660F Datasheet

MFR RecommendedRFQ

AC0201FR-07866RL

YAGEOIn Stock: 806AC0201FR-07866RL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RK73H1HTTC8660F are qualified based on strict electrical and mechanical parameter matching:

Substitution Criteria:

• Resistance value: 866 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)
• Composition: Thick Film (exact match required)
• Temperature coefficient: ±200ppm/°C (exact match required)
• Operating temperature range: -55°C ~ 155°C (exact match required)
• Automotive qualification: AEC-Q200 (exact match required)
• RoHS compliance: ROHS3 Compliant (exact match required)
• Moisture sensitivity: MSL 1 (exact match required)

All substitute parts listed meet these criteria and are therefore electrically and mechanically interchangeable with the original part in applications requiring these specifications.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: RK73H1HTTCM8660F (KOA Speer Electronics, Inc.)

The RK73H1HTTCM8660F is the manufacturer-recommended equivalent. This part maintains the same electrical specifications, package format, and automotive AEC-Q200 qualification as the original RK73H1HTTC8660F. The key advantage is its Active product status, ensuring long-term availability and continued manufacturing support. This part is the preferred choice for design continuity within the KOA product family.

Alternative Substitute: AC0201FR-07866RL (YAGEO)

The AC0201FR-07866RL provides cross-manufacturer substitution capability. As a YAGEO product with Active status, it offers an independent supply source while maintaining identical electrical and mechanical specifications. This part includes moisture-resistant construction and meets all automotive and compliance requirements. Selection of this part is appropriate when supply diversification or alternative sourcing is required.

Compliance and Certification Basis:

All substitute parts maintain ROHS3 compliance, AEC-Q200 automotive qualification, and MSL 1 moisture sensitivity rating. Operating temperature range, temperature coefficient, and all electrical parameters remain constant across all listed parts. Selection between substitutes should be based on procurement availability, supply chain strategy, and packaging requirements rather than technical performance differences.

Frequently Asked Questions (FAQ)

Q: Can RK73H1HTTCM8660F be used as a direct replacement for RK73H1HTTC8660F?

A: Yes. The RK73H1HTTCM8660F is the manufacturer-recommended equivalent with identical electrical specifications (866 Ohms ±1%, 0.05W), package format (0201), temperature range (-55°C ~ 155°C), and AEC-Q200 automotive qualification. The primary difference is product status: RK73H1HTTCM8660F is Active, while the original is Not For New Designs.

Q: What is the difference between RK73H1HTTC8660F and RK73H1HTTCM8660F?

A: Both parts share the same electrical and mechanical specifications. The "M" designation in RK73H1HTTCM8660F indicates a different manufacturing variant or product line update within KOA's RK73H series. The RK73H1HTTCM8660F maintains Active product status, making it the current production equivalent.

Q: Is AC0201FR-07866RL compatible with designs using RK73H1HTTC8660F?

A: Yes. The AC0201FR-07866RL meets all electrical and mechanical requirements: 866 Ohms ±1%, 0.05W power rating, 0201 package, ±200ppm/°C temperature coefficient, -55°C ~ 155°C operating range, AEC-Q200 qualification, ROHS3 compliance, and MSL 1 rating. It is suitable for direct substitution in automotive applications.

Q: Are there packaging differences between these substitute parts?

A: RK73H1HTTC8660F and AC0201FR-07866RL are both supplied in Tape & Reel (TR) packaging. RK73H1HTTCM8660F packaging format is not specified in available data. Confirm packaging requirements with your procurement or supply chain team before finalizing part selection.

Q: Do all substitute parts have moisture-resistant construction?

A: RK73H1HTTC8660F and AC0201FR-07866RL are explicitly specified as moisture-resistant. RK73H1HTTCM8660F does not list moisture resistance in its specification. All three parts maintain MSL 1 (Unlimited) rating. For applications requiring explicit moisture-resistant construction, RK73H1HTTC8660F or AC0201FR-07866RL are the appropriate choices.

Q: What is the significance of AEC-Q200 qualification?

A: AEC-Q200 is an automotive industry standard qualification for passive components. All listed parts meet this standard, confirming suitability for automotive applications requiring reliability and performance validation under automotive operating conditions and environmental stress.

Q: Can these parts be used interchangeably in new designs?

A: RK73H1HTTCM8660F and AC0201FR-07866RL both carry Active product status and are suitable for new designs. RK73H1HTTC8660F is marked "Not For New Designs" and should be used only for legacy system support or existing design maintenance.