RN732ATTD4591D10 Equivalent & Substitute Parts

Part Overview

The RN732ATTD4591D10 is a 4.59 kOhms ±0.5% thin film chip resistor in 0805 (2012 Metric) package rated for 0.1W (1/10W) power dissipation. This component is manufactured by KOA Speer Electronics, Inc. and features moisture-resistant construction with a temperature coefficient of ±10ppm/°C and operating range of -55°C to 155°C.

The RN732ATTD4591D10 carries an Obsolete product status. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or repair requirements for applications utilizing this resistor specification.

Substiute Parts

RN732ATTD4591D10

KOA Speer Electronics, Inc.In Stock: 784RN732ATTD4591D10 Datasheet

Current PartRFQ

RN73R2ATTD4591D10

KOA Speer Electronics, Inc.In Stock: 1128RN73R2ATTD4591D10 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RN732ATTD4591D10 is determined by strict equivalence in the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 4.59 kOhms
• Tolerance: ±0.5%
• Package / Case: 0805 (2012 Metric)
• Composition: Thin Film
• Temperature Coefficient: ±10ppm/°C
• Operating Temperature Range: -55°C to 155°C
• Moisture Resistant construction

Allowable Variation Parameters:

• Power Rating: The substitute part may have equal or higher power rating (0.125W or greater is acceptable for 0.1W applications)
• Product Status: Active status substitutes are preferred for obsolete parts
• Packaging Format: Tape & Reel (TR) packaging is compatible with the original specification
• Additional Certifications: Automotive AEC-Q200 qualification does not preclude use in non-automotive applications

The RN73R2ATTD4591D10 meets all mandatory matching criteria and provides enhanced power rating (0.125W vs. 0.1W) with active product status and automotive qualification.

Parameter Comparison

Engineering Selection Recommendations

The RN73R2ATTD4591D10 is a direct functional substitute for the obsolete RN732ATTD4591D10. Selection of this substitute part is supported by the following engineering factors:

Product Status Consideration: The RN732ATTD4591D10 is classified as Obsolete, creating supply chain risk. The RN73R2ATTD4591D10 maintains Active product status, ensuring continued availability and manufacturer support.

Electrical Equivalence: Both parts share identical resistance (4.59 kOhms), tolerance (±0.5%), temperature coefficient (±10ppm/°C), and operating temperature range (-55°C to 155°C). The substitute part's higher power rating (0.125W vs. 0.1W) provides additional thermal margin without affecting circuit performance.

Mechanical Compatibility: Both parts utilize identical 0805 (2012 Metric) packaging with matching 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.

Regulatory Compliance: Both parts maintain ROHS3 compliance, REACH Unaffected status, and EAR99 classification. The substitute part's Automotive AEC-Q200 qualification does not restrict its use in general industrial or commercial applications.

Composition and Features: Both parts employ thin film construction with moisture-resistant characteristics, maintaining equivalent performance in humidity-sensitive environments.

Frequently Asked Questions (FAQ)

Q: Can the RN73R2ATTD4591D10 be used as a direct replacement for the RN732ATTD4591D10 without circuit modification?

A: Yes. The RN73R2ATTD4591D10 is electrically and mechanically equivalent. Identical resistance, tolerance, temperature coefficient, and operating range ensure functional compatibility. The higher power rating (0.125W vs. 0.1W) provides additional thermal capacity without requiring design changes.

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

A: The RN73R2ATTD4591D10 is rated for 0.125W (1/8W) compared to the original 0.1W (1/10W). This higher rating provides additional thermal margin and allows the resistor to dissipate more power without exceeding temperature limits. For applications operating at or below the original 0.1W specification, this difference is not a limiting factor.

Q: Are the physical dimensions identical between the two parts?

A: Yes. Both parts use the 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.

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

A: No. Automotive AEC-Q200 qualification indicates enhanced reliability testing and quality standards. This certification does not restrict the part's use in general industrial, commercial, or consumer applications. The part remains fully compatible with non-automotive designs.

Q: What is the difference between the RN732A and RN73R2A base product numbers?

A: The base product numbers indicate different product series within KOA Speer Electronics' resistor portfolio. The RN73R2A series (represented by RN73R2ATTD4591D10) is the active, current production line, while the RN732A series (represented by RN732ATTD4591D10) is obsolete. The RN73R2 series incorporates automotive-grade specifications and maintains active manufacturing status.

Q: Are there any environmental or storage differences between the two parts?

A: Both parts share identical Moisture Sensitivity Level (MSL) rating of 1 (Unlimited), indicating no moisture sensitivity restrictions. Storage and handling requirements are equivalent. Both parts maintain ROHS3 compliance and REACH Unaffected status.

Q: Can the substitute part be used in high-precision applications requiring ±0.5% tolerance?

A: Yes. The RN73R2ATTD4591D10 maintains the same ±0.5% tolerance and ±10ppm/°C temperature coefficient as the original part. Both parts are suitable for precision applications within these specifications.