RN732ATTD1240C25 Equivalent & Substitute Parts

Part Overview

The RN732ATTD1240C25 is a 124 Ohm ±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 -55°C to 155°C temperature range.

The RN732ATTD1240C25 carries an 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

RN732ATTD1240C25

KOA Speer Electronics, Inc.In Stock: 694RN732ATTD1240C25 Datasheet

Current PartRFQ

RN73R2ATTD1240C25

KOA Speer Electronics, Inc.In Stock: 1168RN73R2ATTD1240C25 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RN732ATTD1240C25 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 124 Ohms
• Tolerance: ±0.25%
• Package / Case: 0805 (2012 Metric)
• Composition: Thin Film
• Temperature Coefficient: ±25ppm/°C
• Operating Temperature Range: -55°C ~ 155°C
• Moisture Resistant construction

Allowable Variation:

• Power rating may be equal to or greater than 0.1W
• Product status may differ (Active vs. Obsolete)
• Packaging format may differ (bulk vs. Tape & Reel)
• Additional certifications or features may be present

The RN73R2ATTD1240C25 qualifies as a direct substitute based on these criteria. It maintains identical electrical specifications while offering higher power rating (0.125W vs. 0.1W) and active product status with automotive AEC-Q200 qualification.

Parameter Comparison

Engineering Selection Recommendations

The RN73R2ATTD1240C25 is the direct substitute for the obsolete RN732ATTD1240C25. Selection of this substitute is supported by the following factors:

Product Status: The RN73R2ATTD1240C25 maintains Active product status, ensuring continued availability and supply chain support compared to the Obsolete status of the main part.

Electrical Equivalence: Both parts share identical resistance (124 Ohms), tolerance (±0.25%), temperature coefficient (±25ppm/°C), and operating temperature range (-55°C ~ 155°C). These parameters ensure functional interchangeability in circuit applications.

Power Rating: The substitute provides 0.125W power rating versus 0.1W in the main part. This represents a 25% increase in power dissipation capability, which is compatible with applications designed for the lower rating.

Compliance: Both parts are ROHS3 Compliant and REACH Unaffected. The substitute carries additional AEC-Q200 automotive qualification, which does not restrict use in non-automotive applications.

Package Compatibility: Identical 0805 (2012 Metric) package dimensions and termination configuration ensure direct PCB footprint compatibility without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can the RN73R2ATTD1240C25 be used as a direct replacement for the RN732ATTD1240C25?

A: Yes. The RN73R2ATTD1240C25 is a direct substitute. Both parts share identical resistance value, tolerance, temperature coefficient, operating temperature range, package format, and physical dimensions. The substitute offers higher power rating (0.125W vs. 0.1W) and active product status.

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

A: The main part (RN732ATTD1240C25) is rated at 0.1W (1/10W), while the substitute (RN73R2ATTD1240C25) is rated at 0.125W (1/8W). The substitute can dissipate 25% more power. Applications designed for 0.1W operation will function within the substitute's power rating.

Q: Are the physical dimensions identical?

A: Yes. Both parts use the 0805 (2012 Metric) package with dimensions of 0.079" L x 0.049" W (2.00mm x 1.25mm) and maximum seated height of 0.024" (0.60mm). PCB footprints are identical.

Q: Does the AEC-Q200 qualification on the substitute affect non-automotive applications?

A: No. AEC-Q200 is an automotive qualification standard. Its presence on the substitute part does not restrict use in non-automotive applications. The part remains suitable for general industrial and commercial use.

Q: Are there any tolerance or temperature coefficient differences?

A: No. Both parts maintain ±0.25% tolerance and ±25ppm/°C temperature coefficient. Electrical performance characteristics are identical across the specified operating temperature range of -55°C to 155°C.

Q: What is the moisture sensitivity level for both parts?

A: Both parts have Moisture Sensitivity Level (MSL) of 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.