RN732ATTD3010C25 Equivalent & Substitute Parts

Part Overview

The RN732ATTD3010C25 is a 301 Ohms ±0.25% thin film chip resistor manufactured by KOA Speer Electronics, Inc., rated at 0.1W (1/10W) in 0805 (2012 Metric) package format. This component features moisture-resistant construction and operates across the temperature range of -55°C to 155°C. The part is currently classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement continuity.

Substiute Parts

RN732ATTD3010C25

KOA Speer Electronics, Inc.In Stock: 864RN732ATTD3010C25 Datasheet

Current PartRFQ

RN73R2ATTD3010C25

KOA Speer Electronics, Inc.In Stock: 1096RN73R2ATTD3010C25 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RN732ATTD3010C25 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 301 Ohms
• Tolerance: ±0.25%
• Package format: 0805 (2012 Metric)
• Composition: Thin Film
• Temperature coefficient: ±25ppm/°C
• Operating temperature range: -55°C ~ 155°C
• Moisture resistance: Required
• MSL rating: 1 (Unlimited)
• RoHS3 compliance: Required

Allowable Variation:

• Power rating: Substitute parts may have equal or higher power ratings, provided all other electrical and mechanical specifications remain identical.

The RN73R2ATTD3010C25 qualifies as a direct substitute based on full compliance with all mandatory parameters. The increased power rating (0.125W vs. 0.1W) and automotive AEC-Q200 qualification represent enhancements that do not compromise compatibility.

Parameter Comparison

Engineering Selection Recommendations

The RN73R2ATTD3010C25 is the qualified substitute for the obsolete RN732ATTD3010C25. Selection is based on the following engineering criteria:

Compliance and Regulatory Status: Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory continuity in applications subject to environmental directives.

Product Lifecycle: The substitute part maintains active product status, ensuring long-term availability and supply chain stability compared to the obsolete main part.

Electrical and Mechanical Equivalence: Identical resistance, tolerance, temperature coefficient, and operating temperature range guarantee direct functional replacement without circuit redesign.

Enhanced Specifications: The substitute part incorporates automotive AEC-Q200 qualification and increased power rating (0.125W vs. 0.1W), providing additional margin in applications where thermal performance is a consideration.

Physical Compatibility: Identical package dimensions, footprint, and termination configuration ensure PCB layout compatibility without modification.

Frequently Asked Questions (FAQ)

Q: Can the RN73R2ATTD3010C25 be used as a direct replacement for the RN732ATTD3010C25?

A: Yes. The substitute part meets all mandatory electrical and mechanical specifications. Identical resistance, tolerance, temperature coefficient, operating temperature range, package format, and physical dimensions ensure direct compatibility. The increased power rating and automotive qualification represent enhancements that do not affect substitution suitability.

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

A: The RN73R2ATTD3010C25 is rated at 0.125W compared to the main part's 0.1W rating. This higher rating provides additional thermal margin and does not compromise compatibility. Applications operating within the original 0.1W specification will function identically with the substitute part.

Q: Are there any package or footprint differences between these parts?

A: No. Both parts use the 0805 (2012 Metric) package with identical dimensions of 0.079" L x 0.049" W (2.00mm x 1.25mm) and maximum seated height of 0.024" (0.60mm). PCB layouts require no modification.

Q: What does the AEC-Q200 qualification on the substitute part indicate?

A: AEC-Q200 is an automotive industry standard qualification demonstrating enhanced reliability testing and quality assurance. This certification is an additional feature of the substitute part and does not restrict its use in non-automotive applications.

Q: Are moisture sensitivity levels identical between the two parts?

A: Yes. Both parts carry MSL rating 1 (Unlimited), indicating unlimited shelf life without moisture bake requirements prior to soldering.

Q: What is the difference between the RN73 and RN73R series designations?

A: The RN73R series incorporates automotive AEC-Q200 qualification and represents an enhanced product line within KOA Speer's thin film resistor portfolio. The RN73 series (main part) is the standard industrial version, now obsolete.