RN732ATTD1353C25 Equivalent & Substitute Parts

Part Overview

The RN732ATTD1353C25 is a 135 kOhms ±0.25% thin film chip resistor manufactured by KOA Speer Electronics, Inc. in 0805 (2012 Metric) package format. This component is rated for 0.1W (1/10W) power dissipation with moisture-resistant construction and operates across -55°C to 155°C temperature range. The part is currently classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement continuity.

Substiute Parts

RN732ATTD1353C25

KOA Speer Electronics, Inc.In Stock: 869RN732ATTD1353C25 Datasheet

Current PartRFQ

RN73R2ATTD1353C25

KOA Speer Electronics, Inc.In Stock: 1031RN73R2ATTD1353C25 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RN732ATTD1353C25 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 135 kOhms
• Tolerance: ±0.25%
• Package format: 0805 (2012 Metric)
• Composition: Thin Film
• Temperature coefficient: ±25ppm/°C
• Operating temperature range: -55°C to 155°C
• Moisture resistance: Required
• RoHS3 compliance: Required

Allowable Variation:

• Power rating: May be equal to or greater than 0.1W
• Product status: Active status preferred for obsolete parts
• Packaging format: May differ (bulk to tape & reel acceptable)
• Additional certifications: May be present without restriction

The substitute part RN73R2ATTD1353C25 meets all mandatory matching parameters while offering increased power rating (0.125W vs 0.1W) and active product status with automotive AEC-Q200 qualification.

Parameter Comparison

Engineering Selection Recommendations

The RN73R2ATTD1353C25 is a direct functional substitute for the obsolete RN732ATTD1353C25. Selection criteria are based on the following engineering factors:

Product Status Consideration: The RN732ATTD1353C25 is classified as obsolete, creating supply chain risk. The RN73R2ATTD1353C25 maintains active product status from the same manufacturer, ensuring long-term availability and procurement reliability.

Electrical Equivalence: Both parts maintain identical resistance (135 kOhms), tolerance (±0.25%), temperature coefficient (±25ppm/°C), and operating temperature range (-55°C to 155°C). These parameters ensure functional interchangeability in circuit applications.

Power Rating: The substitute part provides 0.125W power rating compared to the main part's 0.1W rating. This represents a 25% increase in power dissipation capability, which is compatible with applications designed for the lower rating.

Compliance and Certifications: Both parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating. The substitute part includes automotive AEC-Q200 qualification, providing additional quality assurance without introducing incompatibility.

Package Compatibility: Identical 0805 (2012 Metric) package dimensions and footprint ensure direct PCB layout compatibility without design modification.

Frequently Asked Questions (FAQ)

Q: Can RN73R2ATTD1353C25 be used as a direct replacement for RN732ATTD1353C25?

A: Yes. Both parts share identical resistance value (135 kOhms), tolerance (±0.25%), package format (0805), composition (thin film), temperature coefficient (±25ppm/°C), and operating temperature range (-55°C to 155°C). The substitute part's higher power rating (0.125W vs 0.1W) is compatible with applications designed for the lower rating.

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

A: The RN732ATTD1353C25 is rated for 0.1W (1/10W), while the RN73R2ATTD1353C25 is rated for 0.125W (1/8W). The substitute provides 25% additional power dissipation capacity. This difference does not affect circuit functionality when the original part's power requirements are met.

Q: Are both parts RoHS compliant?

A: Yes. Both the RN732ATTD1353C25 and RN73R2ATTD1353C25 are ROHS3 compliant and REACH unaffected, meeting environmental regulatory requirements.

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

A: AEC-Q200 is an automotive industry qualification standard. The RN73R2ATTD1353C25 meets this standard, indicating enhanced quality assurance and reliability testing. This certification does not restrict use in non-automotive applications.

Q: Are the physical dimensions identical?

A: Yes. Both parts use the 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: Why is the main part classified as obsolete?

A: The RN732ATTD1353C25 is listed as obsolete by the manufacturer. The RN73R2ATTD1353C25 from the same manufacturer's active product line provides equivalent functionality with improved availability and long-term supply assurance.

Q: Can packaging format differences affect substitution?

A: The main part uses standard packaging while the substitute is supplied in Tape & Reel (TR) format. This difference affects procurement and handling but does not impact electrical or mechanical compatibility. Both formats contain identical components.