RN732ATTD5103C25 Equivalent & Substitute Parts

Part Overview

The RN732ATTD5103C25 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

RN732ATTD5103C25

KOA Speer Electronics, Inc.In Stock: 1121RN732ATTD5103C25 Datasheet

Current PartRFQ

RN73R2ATTD5103C25

KOA Speer Electronics, Inc.In Stock: 952RN73R2ATTD5103C25 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RN732ATTD5103C25 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: ±25ppm/°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 RN73R2ATTD5103C25 meets all mandatory matching criteria while providing enhanced power rating (0.125W vs. 0.1W) and active product status with AEC-Q200 automotive qualification.

Parameter Comparison

Engineering Selection Recommendations

The RN73R2ATTD5103C25 is the direct substitute for the obsolete RN732ATTD5103C25. Both parts share identical electrical specifications (510 kOhms, ±0.25% tolerance, ±25ppm/°C temperature coefficient) and mechanical compatibility (0805 package, 2.00mm × 1.25mm dimensions).

The substitute part provides the following advantages:

• Active Product Status: RN73R2ATTD5103C25 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 the same package footprint.
• 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 pin-to-pin and footprint compatibility is confirmed. No circuit redesign is required for substitution.

Frequently Asked Questions (FAQ)

Q: Can RN73R2ATTD5103C25 replace RN732ATTD5103C25 in existing designs?

A: Yes. Both parts are electrically and mechanically identical in all critical parameters. The substitute has higher power rating and active status, making it a direct replacement without circuit modification.

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 provides 25% additional power dissipation capacity in the same 0805 package. This does not affect compatibility; the substitute operates within the same thermal envelope.

Q: Are the physical dimensions identical?

A: Yes. Both parts use the 0805 (2012 Metric) package with identical dimensions: 0.079" L × 0.049" W (2.00mm × 1.25mm) and maximum seated height of 0.024" (0.60mm). PCB footprints are interchangeable.

Q: Does the substitute part meet the same environmental specifications?

A: Yes. Both parts operate across -55°C to 155°C, feature moisture-resistant construction, carry MSL 1 (Unlimited) rating, and are ROHS3 compliant. The substitute adds AEC-Q200 automotive qualification.

Q: What is the tolerance specification for both parts?

A: Both parts maintain ±0.25% tolerance with ±25ppm/°C temperature coefficient, ensuring identical precision performance in circuit applications.

Q: Why is the main part listed as obsolete?

A: The RN732ATTD5103C25 has been discontinued by the manufacturer. The RN73R2ATTD5103C25 represents the active production equivalent within the KOA Speer RN73 series.