RN732ATTD89R8C50 Equivalent & Substitute Parts

Part Overview

The RN732ATTD89R8C50 is a 89.8 Ohms ±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 is classified as obsolete product status. Due to its obsolete designation, locating equivalent or substitute parts with active production status and compatible electrical and mechanical specifications is necessary for ongoing design support and procurement continuity.

Substiute Parts

RN732ATTD89R8C50

KOA Speer Electronics, Inc.In Stock: 1128RN732ATTD89R8C50 Datasheet

Current PartRFQ

RN73R2ATTD89R8C50

KOA Speer Electronics, Inc.In Stock: 749RN73R2ATTD89R8C50 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RN732ATTD89R8C50 is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Must Match):

• Resistance value: 89.8 Ohms
• Tolerance: ±0.25%
• Temperature Coefficient: ±50ppm/°C
• Operating Temperature Range: -55°C ~ 155°C

Mechanical Parameters (Must Match):

• Package / Case: 0805 (2012 Metric)
• Physical dimensions: 0.079" L x 1.25mm W (2.00mm x 1.25mm)
• Height - Seated (Max): 0.024" (0.60mm)
• Number of Terminations: 2

Composition & Features (Must Match):

• Composition: Thin Film
• Moisture Resistant characteristic

Compliance Parameters (Must Match):

• RoHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

The substitute part RN73R2ATTD89R8C50 meets all mandatory electrical, mechanical, and compliance criteria. The primary difference is an increased power rating (0.125W vs. 0.1W) and active product status with automotive AEC-Q200 qualification, which represents an enhancement rather than a deviation from the original specification.

Parameter Comparison

Engineering Selection Recommendations

The RN73R2ATTD89R8C50 is a direct functional substitute for the RN732ATTD89R8C50. Both components share identical electrical specifications (89.8 Ohms, ±0.25% tolerance, ±50ppm/°C temperature coefficient), mechanical form factor (0805 package), and compliance certifications (ROHS3, MSL 1).

The substitute part offers the following advantages:

• Active Product Status: RN73R2ATTD89R8C50 maintains active production status, ensuring long-term availability and supply chain continuity compared to the obsolete RN732ATTD89R8C50.
• Enhanced Power Rating: The increased power rating of 0.125W (1/8W) provides additional thermal margin without altering electrical performance or physical dimensions.
• Automotive Qualification: AEC-Q200 certification on the substitute part extends applicability to automotive-grade applications while maintaining compatibility with standard industrial applications.
• Identical Compliance: Both parts are ROHS3 compliant with MSL 1 rating, ensuring equivalent environmental and regulatory compliance.

Selection of RN73R2ATTD89R8C50 is appropriate for all applications previously specified for RN732ATTD89R8C50 without circuit redesign or re-qualification.

Frequently Asked Questions (FAQ)

Q: Can RN73R2ATTD89R8C50 be used as a direct replacement for RN732ATTD89R8C50 in existing designs?

A: Yes. Both components have identical resistance (89.8 Ohms), tolerance (±0.25%), temperature coefficient (±50ppm/°C), operating temperature range (-55°C ~ 155°C), and 0805 package dimensions. The substitute part's higher power rating (0.125W vs. 0.1W) is compatible with all applications designed for the original part.

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

A: RN732ATTD89R8C50 is rated at 0.1W (1/10W), while RN73R2ATTD89R8C50 is rated at 0.125W (1/8W). The substitute part has a 25% higher power dissipation capability. This difference does not affect electrical performance and provides additional thermal headroom in circuit applications.

Q: Are the physical dimensions identical?

A: Yes. Both parts use the 0805 (2012 Metric) package with identical dimensions: 0.079" L x 0.049" W (2.00mm x 1.25mm) and maximum seated height of 0.024" (0.60mm). PCB layout and assembly processes require no modification.

Q: What does AEC-Q200 qualification mean for the substitute part?

A: AEC-Q200 is an automotive industry standard qualification for passive components. RN73R2ATTD89R8C50 meets this automotive-grade specification, making it suitable for both automotive and general industrial applications. The original RN732ATTD89R8C50 does not carry this certification.

Q: Are both parts RoHS3 compliant?

A: Yes. Both RN732ATTD89R8C50 and RN73R2ATTD89R8C50 are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited), indicating equivalent environmental and regulatory compliance.

Q: Why is the original part listed as obsolete?

A: RN732ATTD89R8C50 is classified as obsolete by the manufacturer. RN73R2ATTD89R8C50 represents the active production equivalent, ensuring continued availability and supply chain support for this resistance value and package combination.