RN732BTTD4373C50 Equivalent & Substitute Parts

Part Overview

The RN732BTTD4373C50 is a 437 kOhms ±0.25% thin film chip resistor manufactured by KOA Speer Electronics, Inc. in 1206 (3216 Metric) package format with 0.125W power rating. This component is classified as 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

RN732BTTD4373C50

KOA Speer Electronics, Inc.In Stock: 1077RN732BTTD4373C50 Datasheet

Current PartRFQ

RN73R2BTTD4373C50

KOA Speer Electronics, Inc.In Stock: 1036RN73R2BTTD4373C50 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RN732BTTD4373C50 is determined by the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 437 kOhms
• Tolerance: ±0.25%
• Package / Case: 1206 (3216 Metric)
• Composition: Thin Film
• Temperature Coefficient: ±50ppm/°C
• Operating Temperature Range: -55°C ~ 155°C
• Moisture Resistant feature

Allowable Variation Parameters:

• Power Rating: May be equal to or greater than 0.125W
• Product Status: Active status preferred for ongoing availability

The substitute part RN73R2BTTD4373C50 maintains all mandatory matching parameters while providing an increased power rating of 0.25W (1/4W) and active product status with automotive AEC-Q200 qualification.

Parameter Comparison

Engineering Selection Recommendations

The RN73R2BTTD4373C50 is a direct substitute for the obsolete RN732BTTD4373C50. Both components share identical electrical specifications (437 kOhms, ±0.25% tolerance, ±50ppm/°C temperature coefficient) and mechanical compatibility (1206 package, identical dimensions and termination count).

The substitute part provides enhanced specifications through increased power rating (0.25W versus 0.125W) and active product status with automotive AEC-Q200 qualification. Both parts maintain ROHS3 compliance, REACH unaffected status, and MSL 1 rating. The substitute part's higher power rating provides additional thermal margin without compromising any electrical or mechanical parameters required by the original design.

Frequently Asked Questions (FAQ)

Q: Can RN73R2BTTD4373C50 be used as a direct replacement for RN732BTTD4373C50?

A: Yes. Both parts share identical resistance (437 kOhms), tolerance (±0.25%), package (1206), composition (thin film), temperature coefficient (±50ppm/°C), and operating temperature range (-55°C ~ 155°C). The substitute part's increased power rating (0.25W) is compatible with applications designed for the original 0.125W specification.

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

A: The main part is rated at 0.125W (1/8W), while the substitute is rated at 0.25W (1/4W). The higher power rating of the substitute part does not affect circuit performance and provides additional thermal dissipation capability.

Q: Are both parts available in the same package?

A: Yes. Both RN732BTTD4373C50 and RN73R2BTTD4373C50 are packaged in 1206 (3216 Metric) format with identical physical dimensions (0.126" L x 0.063" W, 3.20mm x 1.60mm) and height (0.028" maximum seated height).

Q: What is the product status difference?

A: The original part (RN732BTTD4373C50) is obsolete, while the substitute (RN73R2BTTD4373C50) is active. Active status ensures ongoing availability and supply chain support.

Q: Does the substitute part meet automotive standards?

A: Yes. The RN73R2BTTD4373C50 carries AEC-Q200 automotive qualification. Both parts maintain ROHS3 compliance and REACH unaffected status.

Q: Are there any moisture sensitivity concerns?

A: No. Both parts are rated MSL 1 (Unlimited), indicating no moisture sensitivity limitations during storage or handling.