RN732ATTD3003B50 Equivalent & Substitute Parts

Part Overview

The RN732ATTD3003B50 is a 300 kOhms ±0.1% thin film chip resistor in 0805 (2012 Metric) package rated at 0.1W (1/10W) power dissipation. Manufactured by KOA Speer Electronics, Inc., this component features moisture-resistant construction and operates across the temperature range of -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

RN732ATTD3003B50

KOA Speer Electronics, Inc.In Stock: 905RN732ATTD3003B50 Datasheet

Current PartRFQ

RN73R2ATTD3003B50

KOA Speer Electronics, Inc.In Stock: 1048RN73R2ATTD3003B50 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RN732ATTD3003B50 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 300 kOhms
• Tolerance: ±0.1%
• Package / Case: 0805 (2012 Metric)
• Composition: Thin Film
• Temperature Coefficient: ±50ppm/°C
• Operating Temperature Range: -55°C ~ 155°C
• Moisture Resistance: Required
• RoHS3 Compliance: Required

Allowable Variation:

• Power Rating: The substitute part may have equal or higher power dissipation rating, provided all other electrical and mechanical parameters remain identical.

The RN73R2ATTD3003B50 meets all mandatory matching criteria with an increased power rating of 0.125W (1/8W), making it a direct functional substitute.

Parameter Comparison

Engineering Selection Recommendations

The RN73R2ATTD3003B50 is the direct substitute for the obsolete RN732ATTD3003B50. Both components share identical electrical specifications (300 kOhms, ±0.1% tolerance, ±50ppm/°C temperature coefficient) and mechanical dimensions (0805 package, 2.00mm x 1.25mm). The substitute part features a higher power rating (0.125W versus 0.1W), which provides enhanced thermal margin without affecting circuit performance in applications designed for the original part.

The RN73R2ATTD3003B50 carries active product status and includes automotive AEC-Q200 qualification, ensuring long-term availability and compliance with automotive reliability standards. Both parts maintain ROHS3 compliance and MSL 1 moisture sensitivity rating, supporting equivalent handling and storage requirements.

Frequently Asked Questions (FAQ)

Q: Can the RN73R2ATTD3003B50 be used as a direct replacement for the RN732ATTD3003B50?

A: Yes. Both parts are identical in resistance value (300 kOhms), tolerance (±0.1%), package (0805), composition (thin film), temperature coefficient (±50ppm/°C), and operating temperature range (-55°C ~ 155°C). The substitute part has a higher power rating (0.125W versus 0.1W), which is compatible with the original design.

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

A: The RN732ATTD3003B50 is rated at 0.1W (1/10W), while the RN73R2ATTD3003B50 is rated at 0.125W (1/8W). The higher power rating of the substitute part allows greater heat dissipation capability without affecting electrical performance in circuits designed for the original part.

Q: Are the physical dimensions identical?

A: Yes. Both parts use the 0805 (2012 Metric) package with identical dimensions of 0.079" L x 0.049" W (2.00mm x 1.25mm) and maximum seated height of 0.024" (0.60mm). They are mechanically interchangeable on PCBs designed for the original part.

Q: What is the product status difference?

A: The RN732ATTD3003B50 is classified as obsolete, while the RN73R2ATTD3003B50 is active. The active status of the substitute part ensures continued availability and manufacturing support.

Q: Do both parts meet the same compliance standards?

A: Yes. Both parts are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating. The substitute part additionally qualifies to automotive AEC-Q200 standard, providing enhanced reliability documentation for automotive applications.