RN732ATTD3003C25 Equivalent & Substitute Parts

Part Overview

The RN732ATTD3003C25 is a 300 kOhms ±0.25% thin film chip resistor manufactured by KOA Speer Electronics, Inc. in 0805 (2012 Metric) package format with 0.1W power rating. This component is classified as obsolete product status. Due to its obsolete designation, identifying equivalent and substitute parts is necessary to maintain design continuity and ensure component availability for ongoing production, repair, and maintenance applications.

Substiute Parts

RN732ATTD3003C25

KOA Speer Electronics, Inc.In Stock: 782RN732ATTD3003C25 Datasheet

Current PartRFQ

RN73R2ATTD3003C25

KOA Speer Electronics, Inc.In Stock: 714RN73R2ATTD3003C25 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RN732ATTD3003C25 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 300 kOhms
• Tolerance: ±0.25%
• Package / Case: 0805 (2012 Metric)
• Composition: Thin Film
• Temperature Coefficient: ±25ppm/°C
• Operating Temperature Range: -55°C ~ 155°C
• Moisture Resistance: Required

Allowable Variation Parameters:

• Power Rating: Substitute parts may have equal or higher power rating (0.1W or greater)
• Product Status: Active status preferred for ongoing availability
• Certifications and Features: Additional certifications (such as AEC-Q200) are allowable enhancements

The RN73R2ATTD3003C25 qualifies as a direct substitute based on matching all mandatory parameters while offering enhanced power rating (0.125W vs. 0.1W) and automotive qualification (AEC-Q200).

Parameter Comparison

Engineering Selection Recommendations

The RN73R2ATTD3003C25 is the direct substitute for the obsolete RN732ATTD3003C25. Selection is based on the following engineering criteria:

Electrical Equivalence: Both parts maintain identical resistance (300 kOhms), tolerance (±0.25%), temperature coefficient (±25ppm/°C), and operating temperature range (-55°C ~ 155°C). These parameters ensure functional interchangeability in circuit applications.

Package Compatibility: Both components use the 0805 (2012 Metric) package with identical physical dimensions (0.079" L x 0.049" W, 2.00mm x 1.25mm) and height (0.024" maximum seated height). PCB footprints and assembly processes remain unchanged.

Power Rating Enhancement: The substitute part provides 0.125W power rating compared to the original 0.1W rating. This represents a 25% increase in power dissipation capability, which is advantageous for thermal margin and component reliability without introducing any compatibility issues.

Compliance and Certification: Both parts are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating. The substitute part includes AEC-Q200 automotive qualification, which adds reliability assurance for applications requiring automotive-grade components.

Product Status: The substitute part maintains active manufacturing status, ensuring long-term availability and supply chain continuity compared to the obsolete original part.

Frequently Asked Questions (FAQ)

Q: Can RN73R2ATTD3003C25 be used as a direct replacement for RN732ATTD3003C25 in existing designs?

A: Yes. Both parts are electrically and mechanically equivalent. They share identical resistance value, tolerance, temperature coefficient, operating temperature range, package dimensions, and composition. The substitute part's higher power rating (0.125W vs. 0.1W) presents no compatibility issues and improves thermal performance.

Q: What is the difference between the two part numbers?

A: The primary differences are product status and power rating. RN732ATTD3003C25 is obsolete with 0.1W rating. RN73R2ATTD3003C25 is active production with 0.125W rating and includes AEC-Q200 automotive qualification. The "R2" designation in the substitute part number indicates the enhanced automotive-grade specification.

Q: Are the physical dimensions identical?

A: Yes. Both parts use 0805 (2012 Metric) package with identical dimensions: 0.079" length x 0.049" width (2.00mm x 1.25mm) and maximum seated height of 0.024" (0.60mm). PCB footprints are interchangeable without modification.

Q: Does the higher power rating of the substitute part affect circuit performance?

A: No. Higher power rating indicates greater thermal capacity and does not alter electrical characteristics. Resistance, tolerance, temperature coefficient, and frequency response remain identical. The substitute part operates within the same electrical parameters as the original.

Q: Are both parts RoHS compliant?

A: Yes. Both RN732ATTD3003C25 and RN73R2ATTD3003C25 are ROHS3 compliant and carry identical moisture sensitivity level (MSL 1 - Unlimited), ensuring compliance with environmental and regulatory requirements.

Q: What does AEC-Q200 certification on the substitute part mean?

A: AEC-Q200 is an automotive industry standard qualification for passive components. This certification indicates the substitute part meets stringent automotive reliability and performance requirements. It is an enhancement that does not restrict use in non-automotive applications.

Q: Can I use the substitute part in high-reliability or military applications?

A: Substitution decisions for high-reliability or military applications must be based on specific application requirements and qualification standards. Both parts meet standard commercial specifications. Consult application-specific requirements and qualification documentation for such applications.