RN732ATTD4171C50 Equivalent & Substitute Parts

Part Overview

The RN732ATTD4171C50 is a 4.17 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 features moisture-resistant construction and operates across the temperature range of -55°C to 155°C.

The RN732ATTD4171C50 is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this resistor specification.

Substiute Parts

RN732ATTD4171C50

KOA Speer Electronics, Inc.In Stock: 809RN732ATTD4171C50 Datasheet

Current PartRFQ

RN73R2ATTD4171C50

KOA Speer Electronics, Inc.In Stock: 1210RN73R2ATTD4171C50 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RN732ATTD4171C50 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 4.17 kOhms
• Tolerance: ±0.25%
• Package / Case: 0805 (2012 Metric)
• Composition: Thin Film
• Temperature Coefficient: ±50ppm/°C
• Operating Temperature Range: -55°C ~ 155°C
• Moisture Resistant feature

Allowable Variation:

• Power rating may be equal to or greater than the original specification (0.1W minimum)
• Product status may transition from obsolete to active
• Packaging format may differ (bulk to Tape & Reel)
• Additional certifications (such as AEC-Q200) do not disqualify a substitute

The RN73R2ATTD4171C50 meets all mandatory matching parameters and qualifies as a direct substitute.

Parameter Comparison

Engineering Selection Recommendations

The RN73R2ATTD4171C50 is a qualified substitute for the RN732ATTD4171C50 based on the following engineering criteria:

Electrical Equivalence: Both parts maintain identical resistance (4.17 kOhms), tolerance (±0.25%), temperature coefficient (±50ppm/°C), and operating temperature range (-55°C ~ 155°C). The substitute provides increased power dissipation capability (0.125W versus 0.1W), which is compatible with applications designed for the original part.

Mechanical Compatibility: Both components utilize the 0805 (2012 Metric) package with identical physical dimensions (0.079" L x 0.049" W, 2.00mm x 1.25mm) and maximum seated height (0.024" / 0.60mm). PCB layout and assembly processes require no modification.

Regulatory Compliance: Both parts are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99. The substitute carries AEC-Q200 automotive qualification, which provides additional reliability assurance without introducing incompatibility.

Supply Chain Status: The RN73R2ATTD4171C50 is active in production with confirmed inventory availability (1126 Pcs), whereas the RN732ATTD4171C50 is obsolete. Selection of the substitute ensures long-term component availability and production continuity.

Frequently Asked Questions (FAQ)

Q: Can the RN73R2ATTD4171C50 be used as a direct replacement for the RN732ATTD4171C50 in existing designs?

A: Yes. Both parts share identical electrical specifications (4.17 kOhms ±0.25%, ±50ppm/°C, -55°C ~ 155°C operating range) and mechanical dimensions (0805 package, 2.00mm x 1.25mm). The substitute's higher power rating (0.125W) is compatible with applications designed for 0.1W. No circuit modifications are required.

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

A: The RN732ATTD4171C50 is rated at 0.1W (1/10W), while the RN73R2ATTD4171C50 is rated at 0.125W (1/8W). The substitute provides 25% additional power dissipation capability. This difference does not affect compatibility; the substitute can be used in any application where the original part was specified.

Q: Are there packaging differences between these parts?

A: The RN732ATTD4171C50 is supplied in bulk packaging, while the RN73R2ATTD4171C50 is supplied in Tape & Reel (TR) format. Both use the same 0805 (2012 Metric) package. Tape & Reel packaging is standard for automated assembly processes and does not affect component performance or PCB compatibility.

Q: Does the AEC-Q200 certification on the substitute part introduce any incompatibility?

A: No. AEC-Q200 is an automotive qualification standard that establishes additional reliability and quality requirements. A component with AEC-Q200 certification meets or exceeds the performance criteria of non-certified equivalents. This certification enhances reliability without introducing incompatibility.

Q: Are the thermal and environmental operating ranges identical?

A: Yes. Both parts operate across -55°C to 155°C and maintain ±50ppm/°C temperature coefficient. Both feature moisture-resistant construction with Moisture Sensitivity Level 1 (Unlimited). Environmental performance is equivalent.

Q: What is the basis for confirming this substitution?

A: Substitution is confirmed through strict parameter matching: identical resistance, tolerance, package, composition, temperature coefficient, and operating range. The substitute's increased power rating and active production status support its selection as a replacement for the obsolete original part.