RN732ATTD1263C50 Equivalent & Substitute Parts

Part Overview

The RN732ATTD1263C50 is a 126 kOhms ±0.25% thin film chip resistor in 0805 (2012 Metric) package rated for 0.1W (1/10W) power dissipation. Manufactured by KOA Speer Electronics, Inc., this component features 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

RN732ATTD1263C50

KOA Speer Electronics, Inc.In Stock: 784RN732ATTD1263C50 Datasheet

Current PartRFQ

RN73R2ATTD1263C50

KOA Speer Electronics, Inc.In Stock: 1082RN73R2ATTD1263C50 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RN732ATTD1263C50 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 126 kOhms
• Tolerance: ±0.25%
• Package type: 0805 (2012 Metric)
• Composition: Thin Film
• Temperature coefficient: ±50ppm/°C
• Operating temperature range: -55°C to 155°C
• Moisture resistance: Required

Allowable Variation:

• Power rating: May be equal to or greater than 0.1W
• Product status: Active status preferred for obsolete parts
• Certifications: Additional automotive or industrial ratings permitted

The RN73R2ATTD1263C50 qualifies as a direct substitute based on identical resistance, tolerance, package, composition, and temperature specifications, with an increased power rating of 0.125W (1/8W) and active product status.

Parameter Comparison

Engineering Selection Recommendations

The RN73R2ATTD1263C50 is the direct equivalent for RN732ATTD1263C50 replacement. Selection is based on the following engineering criteria:

Electrical Equivalence: Both parts maintain identical resistance (126 kOhms), tolerance (±0.25%), temperature coefficient (±50ppm/°C), and operating temperature range (-55°C to 155°C). The substitute's increased power rating (0.125W versus 0.1W) provides enhanced thermal margin without affecting circuit performance.

Physical Compatibility: Identical 0805 (2012 Metric) package dimensions and termination configuration ensure direct PCB footprint compatibility.

Compliance Status: Both parts are ROHS3 compliant with MSL 1 rating. The substitute carries AEC-Q200 automotive qualification, providing additional reliability assurance for applications requiring automotive-grade components.

Procurement Advantage: The substitute maintains active product status with established supply chain availability, eliminating obsolescence risk associated with the main part.

Frequently Asked Questions (FAQ)

Q: Can RN73R2ATTD1263C50 be used as a direct replacement for RN732ATTD1263C50?

A: Yes. Both parts share identical electrical specifications (126 kOhms ±0.25%, ±50ppm/°C, -55°C to 155°C) and physical package (0805 2012 Metric). The substitute's higher power rating (0.125W) is compatible with circuits designed for 0.1W operation.

Q: What is the difference in power rating between these parts?

A: The main part is rated 0.1W (1/10W), while the substitute is rated 0.125W (1/8W). The substitute can safely operate in applications designed for the lower power rating without performance degradation.

Q: Are the physical dimensions identical?

A: Yes. Both parts measure 0.079" L x 0.049" W (2.00mm x 1.25mm) with maximum seated height of 0.024" (0.60mm), ensuring identical PCB footprint compatibility.

Q: Does the substitute have additional certifications?

A: The RN73R2ATTD1263C50 includes AEC-Q200 automotive qualification, while the main part does not specify this rating. This additional certification does not restrict use in non-automotive applications.

Q: What is the packaging difference?

A: The substitute is supplied in Tape & Reel (TR) format. Verify packaging compatibility with your procurement and assembly processes.

Q: Are both parts RoHS compliant?

A: Yes. Both parts are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited), meeting current environmental and reliability standards.