RN732ATTD3003D50 Equivalent & Substitute Parts

Part Overview

The RN732ATTD3003D50 is a 300 kOhms ±0.5% thin film chip resistor rated at 0.1W (1/10W) in 0805 (2012 Metric) package format. This component is manufactured by KOA Speer Electronics, Inc. and features moisture-resistant construction with a temperature coefficient of ±50ppm/°C and operating range of -55°C to 155°C.

The RN732ATTD3003D50 has reached obsolete product status. 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

RN732ATTD3003D50

KOA Speer Electronics, Inc.In Stock: 735RN732ATTD3003D50 Datasheet

Current PartRFQ

RN73R2ATTD3003D50

KOA Speer Electronics, Inc.In Stock: 962RN73R2ATTD3003D50 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RN732ATTD3003D50 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 300 kOhms
• Tolerance: ±0.5%
• Package / Case: 0805 (2012 Metric)
• Composition: Thin Film
• Temperature Coefficient: ±50ppm/°C
• Operating Temperature Range: -55°C to 155°C
• Moisture Resistant construction

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
• Additional certifications (such as AEC-Q200) do not disqualify substitution

The RN73R2ATTD3003D50 meets all mandatory matching parameters and represents a direct functional substitute with enhanced power rating (0.125W vs. 0.1W) and active product status.

Parameter Comparison

Engineering Selection Recommendations

The RN73R2ATTD3003D50 is the direct substitute for the obsolete RN732ATTD3003D50. Both components share identical electrical specifications (300 kOhms, ±0.5% tolerance, ±50ppm/°C temperature coefficient) and mechanical compatibility (0805 package, identical dimensions and height).

The substitute part offers the following advantages:

Product Status: The RN73R2ATTD3003D50 maintains active product status, ensuring long-term availability and supply chain continuity compared to the obsolete main part.

Power Rating Enhancement: The substitute provides 0.125W (1/8W) power rating versus the original 0.1W (1/10W). This increased rating provides additional thermal margin without affecting circuit performance in applications designed for the original specification.

Compliance and Certifications: Both parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating. The substitute additionally carries AEC-Q200 automotive qualification, which does not restrict its use in non-automotive applications and provides enhanced reliability documentation.

Electrical Equivalence: Identical resistance, tolerance, temperature coefficient, and operating temperature range ensure direct functional substitution without circuit redesign or performance degradation.

Frequently Asked Questions (FAQ)

Q: Can the RN73R2ATTD3003D50 be used as a direct replacement for the RN732ATTD3003D50?

A: Yes. Both components share identical electrical specifications (300 kOhms, ±0.5% tolerance, ±50ppm/°C temperature coefficient) and mechanical compatibility (0805 package, identical physical dimensions). The substitute is electrically and mechanically interchangeable.

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

A: The main part (RN732ATTD3003D50) is rated at 0.1W (1/10W), while the substitute (RN73R2ATTD3003D50) is rated at 0.125W (1/8W). The higher power rating of the substitute provides additional thermal capacity and does not affect compatibility in circuits designed for the original 0.1W specification.

Q: Are both parts available in the same package format?

A: Yes. Both the RN732ATTD3003D50 and RN73R2ATTD3003D50 are packaged in 0805 (2012 Metric) format with identical physical dimensions (0.079" L x 0.049" W, 2.00mm x 1.25mm) and maximum seated height (0.024", 0.60mm). They are footprint-compatible for PCB assembly.

Q: What is the significance of the AEC-Q200 rating on the substitute part?

A: AEC-Q200 is an automotive qualification standard. The RN73R2ATTD3003D50 carries this certification, indicating enhanced reliability testing and documentation. This certification does not restrict use in non-automotive applications and provides additional quality assurance for any application requiring the specified electrical and mechanical parameters.

Q: Do both parts meet RoHS compliance requirements?

A: Yes. Both the RN732ATTD3003D50 and RN73R2ATTD3003D50 are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, indicating no moisture-related handling restrictions during storage or assembly.

Q: Why is the main part listed as obsolete?

A: The RN732ATTD3003D50 has reached end-of-life status. The RN73R2ATTD3003D50 represents the active equivalent from the same manufacturer (KOA Speer Electronics, Inc.) with identical electrical performance and enhanced availability for ongoing production requirements.