RN732ATTD4530C25 Equivalent & Substitute Parts

Part Overview

The RN732ATTD4530C25 is a 453 Ohm 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 ±0.25% tolerance, moisture resistance, 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 continuity.

Substiute Parts

RN732ATTD4530C25

KOA Speer Electronics, Inc.In Stock: 1228RN732ATTD4530C25 Datasheet

Current PartRFQ

RN73R2ATTD4530C25

KOA Speer Electronics, Inc.In Stock: 1125RN73R2ATTD4530C25 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RN732ATTD4530C25 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 453 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 capability
• RoHS3 compliance

Allowable Variation:

• Power rating may be equal or higher (uprating acceptable)
• Product status may transition from obsolete to active
• Additional certifications (such as AEC-Q200) are permissible additions
• Packaging format (bulk vs. Tape & Reel) does not affect electrical equivalence

The substitute part RN73R2ATTD4530C25 meets all mandatory matching criteria while providing enhanced specifications through higher power rating (0.125W vs. 0.1W) and automotive qualification (AEC-Q200).

Parameter Comparison

Engineering Selection Recommendations

The RN73R2ATTD4530C25 serves as a direct functional substitute for the obsolete RN732ATTD4530C25. Selection of the substitute part is supported by the following factors:

Electrical Equivalence: Both parts maintain identical resistance (453 Ohms), tolerance (±0.25%), temperature coefficient (±25ppm/°C), and operating temperature range (-55°C ~ 155°C). The substitute's higher power rating (0.125W vs. 0.1W) provides additional thermal margin without altering circuit behavior.

Physical Compatibility: Both components utilize the 0805 (2012 Metric) package format with identical dimensions (0.079" L x 0.049" W, 2.00mm x 1.25mm) and height (0.024" maximum seated height). Direct footprint compatibility is confirmed.

Compliance and Certification: Both parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating. The substitute includes AEC-Q200 automotive qualification, which does not restrict use in non-automotive applications and indicates enhanced reliability screening.

Procurement Advantage: The substitute part maintains active product status with confirmed inventory availability, eliminating supply chain risk associated with the obsolete main part.

Frequently Asked Questions (FAQ)

Q: Can RN73R2ATTD4530C25 be used as a direct replacement for RN732ATTD4530C25 in existing designs?

A: Yes. Both parts are electrically and physically equivalent across all critical parameters: 453 Ohm resistance, ±0.25% tolerance, 0805 package, thin film composition, ±25ppm/°C temperature coefficient, and -55°C to 155°C operating range. The substitute's higher power rating (0.125W vs. 0.1W) is a non-restrictive enhancement.

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

A: The RN73R2ATTD4530C25 is rated at 0.125W compared to the main part's 0.1W rating. This represents a 25% increase in power dissipation capability. In applications where the original 0.1W part operated within its thermal limits, the substitute provides additional margin. No circuit redesign is required.

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

A: No. AEC-Q200 certification indicates enhanced reliability screening and qualification standards. This certification does not restrict the part's use in non-automotive circuits and represents an additional quality assurance measure.

Q: Are the physical dimensions identical between both parts?

A: Yes. Both the RN732ATTD4530C25 and RN73R2ATTD4530C25 share identical 0805 (2012 Metric) package dimensions: 0.079" length × 0.049" width (2.00mm × 1.25mm) with maximum seated height of 0.024" (0.60mm). PCB footprints are directly compatible.

Q: What is the difference between the packaging formats listed?

A: The main part is supplied in standard packaging, while the substitute is available in Tape & Reel (TR) format. Both formats contain identical electrical components; the difference is in the delivery and handling method. Tape & Reel format is standard for automated assembly processes.

Q: Are both parts RoHS3 compliant?

A: Yes. Both the RN732ATTD4530C25 and RN73R2ATTD4530C25 are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, confirming compliance with current environmental and regulatory standards.