RN732ATTD5103C50 Equivalent & Substitute Parts

Part Overview

The RN732ATTD5103C50 is a 510 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

RN732ATTD5103C50

KOA Speer Electronics, Inc.In Stock: 1108RN732ATTD5103C50 Datasheet

Current PartRFQ

RN73R2ATTD5103C50

KOA Speer Electronics, Inc.In Stock: 764RN73R2ATTD5103C50 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RN732ATTD5103C50 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 510 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: Substitute parts may have equal or higher power dissipation capacity
• Product status: Active status preferred for obsolete parts
• Certifications: Additional automotive or industrial certifications are permissible

The RN73R2ATTD5103C50 meets all mandatory parameters while offering enhanced power rating (0.125W vs. 0.1W) and active product status with AEC-Q200 automotive qualification.

Parameter Comparison

Engineering Selection Recommendations

The RN73R2ATTD5103C50 is the direct substitute for the obsolete RN732ATTD5103C50. Both components share identical electrical specifications (510 kOhms, ±0.25% tolerance, ±50ppm/°C temperature coefficient) and mechanical compatibility (0805 package, 2.00mm x 1.25mm dimensions).

The substitute part provides the following advantages:

• Active Product Status: RN73R2ATTD5103C50 is currently in active production, ensuring long-term availability and supply chain continuity.
• Enhanced Power Rating: 0.125W rating provides 25% additional power dissipation margin compared to the 0.1W main part, improving thermal performance in equivalent applications.
• Automotive Qualification: AEC-Q200 certification qualifies this component for automotive applications, expanding design flexibility.
• Regulatory Compliance: Both parts maintain ROHS3 compliance and REACH unaffected status.

Direct substitution is electrically and mechanically valid for all applications originally specified for RN732ATTD5103C50.

Frequently Asked Questions (FAQ)

Q: Can RN73R2ATTD5103C50 replace RN732ATTD5103C50 in existing designs?

A: Yes. Both components are electrically and mechanically identical across all critical parameters: 510 kOhms resistance, ±0.25% tolerance, 0805 package, and -55°C to 155°C operating range. The substitute part's higher power rating (0.125W vs. 0.1W) does not create compatibility issues.

Q: What is the significance of the higher power rating on the substitute part?

A: The RN73R2ATTD5103C50 is rated for 0.125W compared to 0.1W on the main part. This represents a 25% increase in power dissipation capacity. In applications where the original part operated at or near its power limit, the substitute provides additional thermal margin without changing electrical behavior.

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

A: No. AEC-Q200 is an additional qualification that does not restrict use in non-automotive applications. The substitute part meets or exceeds all specifications of the original component and is suitable for any application originally designed for RN732ATTD5103C50.

Q: Are the physical dimensions identical between the main part and substitute?

A: Yes. Both components are 0805 (2012 Metric) package with identical dimensions: 0.079" L x 0.049" W (2.00mm x 1.25mm) and maximum seated height of 0.024" (0.60mm). PCB footprints are directly compatible.

Q: What is the packaging difference between these parts?

A: RN732ATTD5103C50 packaging is not specified in the provided data. RN73R2ATTD5103C50 is supplied in Tape & Reel (TR) format. Confirm packaging requirements for your procurement process.

Q: Are both parts RoHS compliant?

A: Yes. Both RN732ATTD5103C50 and RN73R2ATTD5103C50 are ROHS3 compliant with MSL rating of 1 (Unlimited moisture sensitivity level).