RK73B1HTTC911G Equivalent & Substitute Parts

Part Overview

The RK73B1HTTC911G is a 910 Ohm ±2% thick film chip resistor rated at 0.05W (1/20W) in 0201 package format (0.60mm x 0.30mm metric). This component is manufactured by KOA Speer Electronics, Inc. and meets automotive AEC-Q200 qualification standards. The part is currently classified as "Not For New Designs," indicating it has been superseded in the product line. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and transition to active product alternatives that maintain electrical and mechanical compatibility.

Substiute Parts

RK73B1HTTC911G

KOA Speer Electronics, Inc.In Stock: 978RK73B1HTTC911G Datasheet

Current PartRFQ

RK73B1HTTCM911G

KOA Speer Electronics, Inc.In Stock: 710RK73B1HTTCM911G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RK73B1HTTC911G is determined by strict equivalence across the following critical parameters:

Electrical Parameters: Resistance value (910 Ohms), tolerance (±2%), 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 Parameters: Package format (0201 / 0603 Metric) and physical dimensions (0.024" L x 0.012" W, height 0.010" max) ensure PCB footprint and assembly compatibility.

Compliance Parameters: AEC-Q200 automotive qualification, ROHS3 compliance, and MSL 1 rating 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 match all these parameters without deviation. Parts differing in any of these criteria are not equivalent and require full design re-qualification.

Parameter Comparison

Engineering Selection Recommendations

The RK73B1HTTCM911G is a direct equivalent substitute for the RK73B1HTTC911G. Both components are manufactured by KOA Speer Electronics, Inc. within the RK73B series and share identical electrical, mechanical, and compliance specifications.

The primary distinction is product status: RK73B1HTTC911G is classified as "Not For New Designs," while RK73B1HTTCM911G is Active. This status change reflects the manufacturer's product lifecycle management and indicates that RK73B1HTTCM911G is the current recommended part for new designs and ongoing production.

Both parts maintain full AEC-Q200 automotive qualification, ROHS3 compliance, and MSL 1 rating. No design modifications, PCB layout changes, or re-qualification testing are required when transitioning from RK73B1HTTC911G to RK73B1HTTCM911G. The substitution is electrically and mechanically transparent.

Frequently Asked Questions (FAQ)

Q: Can RK73B1HTTCM911G be used as a direct replacement for RK73B1HTTC911G in existing designs?

A: Yes. Both parts are electrically and mechanically identical. No design changes are required. The substitution is direct and transparent at the PCB level.

Q: Why is RK73B1HTTC911G marked "Not For New Designs"?

A: This designation indicates the part has been superseded in the manufacturer's product line. RK73B1HTTCM911G is the active equivalent. For new designs, RK73B1HTTCM911G should be specified.

Q: Are there any compliance or certification differences between these parts?

A: No. Both parts carry identical AEC-Q200 automotive qualification, ROHS3 compliance, and MSL 1 rating. Compliance status is equivalent.

Q: Do these parts have the same physical footprint?

A: Yes. Both are 0201 package format (0603 metric) with identical dimensions: 0.024" L x 0.012" W (0.60mm x 0.30mm) and maximum seated height of 0.010" (0.26mm). PCB footprints are identical.

Q: What is the temperature coefficient difference, if any?

A: There is no difference. Both parts have a temperature coefficient of ±200ppm/°C and operate across the identical range of -55°C ~ 155°C.

Q: Can I mix these parts in the same production batch?

A: Yes. Since both parts are electrically and mechanically equivalent with identical specifications, they can be used interchangeably in the same assembly without functional or reliability impact.

Q: Is there a performance difference in automotive applications?

A: No. Both parts meet AEC-Q200 automotive qualification standards. Performance in automotive environments is equivalent.