RK73H1HTTC8660D Equivalent & Substitute Parts

Part Overview

The RK73H1HTTC8660D is a 866 Ohm ±0.5% thick film chip resistor manufactured by KOA Speer Electronics, Inc., rated at 0.05W (1/20W) in a 0201 (0603 Metric) package. This component is designed for automotive applications and meets AEC-Q200 qualification standards with moisture-resistant construction. The part is currently classified as Not For New Designs, necessitating identification of active equivalent alternatives that maintain identical electrical and mechanical specifications for ongoing production and maintenance applications.

Substiute Parts

RK73H1HTTC8660D

KOA Speer Electronics, Inc.In Stock: 1047RK73H1HTTC8660D Datasheet

Current PartRFQ

RK73H1HTTCM8660D

KOA Speer Electronics, Inc.In Stock: 1137RK73H1HTTCM8660D Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RK73H1HTTC8660D is determined by strict equivalence across the following critical parameters:

Electrical Specifications: Resistance value (866 Ohms), tolerance (±0.5%), and power rating (0.05W) must be identical. Temperature coefficient (±200ppm/°C) and operating temperature range (-55°C ~ 155°C) establish thermal performance boundaries.

Mechanical Specifications: Package type (0201 / 0603 Metric), physical dimensions (0.024" L x 0.012" W / 0.60mm x 0.30mm), and seated height (0.010" / 0.26mm maximum) ensure PCB compatibility and assembly process compatibility.

Compliance & Quality: AEC-Q200 automotive qualification, ROHS3 compliance, and Moisture Sensitivity Level 1 (Unlimited) are mandatory for equivalent substitution in automotive applications.

Composition: Thick film construction must be maintained to preserve electrical characteristics and reliability performance.

Substitute parts must originate from the same manufacturer series (RK73H) to ensure process consistency and performance equivalence.

Parameter Comparison

Engineering Selection Recommendations

The RK73H1HTTCM8660D is the direct equivalent substitute for the RK73H1HTTC8660D. Both components are manufactured by KOA Speer Electronics, Inc., within the RK73H series, and share identical electrical, mechanical, and compliance specifications.

The primary distinction is product status: the original part (RK73H1HTTC8660D) is classified as Not For New Designs, while the substitute (RK73H1HTTCM8660D) maintains Active status. This status change reflects manufacturing lifecycle management and does not indicate any change in component performance or reliability.

Both parts satisfy AEC-Q200 automotive qualification requirements, ROHS3 compliance, and REACH unaffected status, making them suitable for automotive circuit applications requiring 866 Ohm resistors with ±0.5% tolerance in 0201 package form factors.

The substitute part is available in higher inventory (1047 Pcs vs. 1033 Pcs), supporting supply chain continuity for production and maintenance applications.

Frequently Asked Questions (FAQ)

Q: Can RK73H1HTTCM8660D be used as a direct replacement for RK73H1HTTC8660D in existing designs?

A: Yes. Both parts are electrically and mechanically identical. They share the same resistance value (866 Ohms), tolerance (±0.5%), power rating (0.05W), package type (0201), and thermal specifications. No circuit redesign or PCB modification is required.

Q: What is the significance of the product status difference (Not For New Designs vs. Active)?

A: Product status reflects manufacturing lifecycle classification. The original part is no longer recommended for new design implementations, while the substitute maintains active production status. For existing applications, this distinction does not affect component performance or reliability.

Q: Are both parts suitable for automotive applications?

A: Yes. Both the RK73H1HTTC8660D and RK73H1HTTCM8660D carry AEC-Q200 automotive qualification and are rated for operating temperatures from -55°C to 155°C, meeting automotive reliability and environmental stress requirements.

Q: Do the parts have identical physical dimensions for PCB assembly?

A: Yes. Both components have identical 0201 (0603 Metric) package dimensions: 0.024" L x 0.012" W (0.60mm x 0.30mm) with a maximum seated height of 0.010" (0.26mm). They are fully compatible with existing PCB layouts and automated assembly processes.

Q: What compliance certifications apply to both parts?

A: Both parts are ROHS3 compliant, REACH unaffected, and carry Moisture Sensitivity Level 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.

Q: Is there a difference in tolerance or temperature coefficient between the two parts?

A: No. Both parts maintain ±0.5% tolerance and ±200ppm/°C temperature coefficient, ensuring identical electrical performance across the specified operating temperature range.