RN731ETTP9102D50 Equivalent & Substitute Parts

Part Overview

The RN731ETTP9102D50 is a 91 kOhms ±0.5% thin film chip resistor in 0402 (1005 Metric) package manufactured by KOA Speer Electronics, Inc. This component is rated for 0.063W (1/16W) power dissipation with moisture-resistant construction and operates across -55°C to 155°C. The part is currently classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement.

Substiute Parts

RN731ETTP9102D50

KOA Speer Electronics, Inc.In Stock: 850RN731ETTP9102D50 Datasheet

Current PartRFQ

RN73R1ETTP9102D50

KOA Speer Electronics, Inc.In Stock: 1012RN73R1ETTP9102D50 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RN731ETTP9102D50 is determined by strict equivalence across the following parameters:

Electrical Parameters: Resistance value (91 kOhms), tolerance (±0.5%), power rating (0.063W), and temperature coefficient (±50ppm/°C) must be identical.

Physical Parameters: Package type (0402/1005 Metric), dimensions (0.039" L x 0.020" W, 1.00mm x 0.50mm), and height (0.016" maximum seated) must match exactly.

Material & Construction: Thin film composition and moisture-resistant properties are required.

Environmental Compliance: RoHS3 compliance and MSL 1 rating must be maintained.

The RN73R1ETTP9102D50 meets all substitution criteria as a direct functional equivalent with identical electrical and mechanical specifications. The primary distinction is product status and automotive qualification.

Parameter Comparison

Engineering Selection Recommendations

The RN73R1ETTP9102D50 is the direct functional substitute for the obsolete RN731ETTP9102D50. Both components share identical electrical specifications, mechanical dimensions, and environmental compliance ratings. The substitute part is currently in active production status, ensuring long-term availability and supply chain continuity.

The RN73R1ETTP9102D50 includes AEC-Q200 automotive qualification, which provides additional reliability assurance through automotive-grade testing and qualification standards. This qualification does not restrict use in non-automotive applications and represents an enhancement over the original part specification.

Selection of the RN73R1ETTP9102D50 is appropriate for all applications previously designed with the RN731ETTP9102D50, with no circuit redesign or board layout modifications required.

Frequently Asked Questions (FAQ)

Q: Can the RN73R1ETTP9102D50 be used as a direct replacement for the RN731ETTP9102D50?

A: Yes. Both parts are electrically and mechanically identical with matching resistance (91 kOhms), tolerance (±0.5%), power rating (0.063W), temperature coefficient (±50ppm/°C), and 0402 package dimensions. No circuit modifications are required.

Q: What is the difference between these two parts?

A: The primary differences are product status and automotive qualification. The RN731ETTP9102D50 is obsolete, while the RN73R1ETTP9102D50 is active production. The substitute includes AEC-Q200 automotive qualification, which is not present in the original part.

Q: Does the AEC-Q200 qualification affect non-automotive applications?

A: No. AEC-Q200 qualification represents additional testing and quality assurance. It does not restrict the component's use in non-automotive circuits and does not alter electrical or mechanical performance.

Q: Are the package dimensions identical?

A: Yes. Both parts use the 0402 (1005 Metric) package with identical dimensions of 0.039" L x 0.020" W (1.00mm x 0.50mm) and maximum seated height of 0.016" (0.40mm).

Q: Are both parts RoHS3 compliant?

A: Yes. Both the RN731ETTP9102D50 and RN73R1ETTP9102D50 are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Q: What is the temperature operating range for both parts?

A: Both parts operate across -55°C to 155°C with a temperature coefficient of ±50ppm/°C.