RN732ATTD4120F10 Equivalent & Substitute Parts

Part Overview

The RN732ATTD4120F10 is a 412 Ohms ±1% thin film chip resistor manufactured by KOA Speer Electronics, Inc., rated at 0.1W (1/10W) in 0805 (2012 Metric) package format. This component features moisture-resistant construction with a temperature coefficient of ±10ppm/°C 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

RN732ATTD4120F10

KOA Speer Electronics, Inc.In Stock: 1177RN732ATTD4120F10 Datasheet

Current PartRFQ

RN73R2ATTD4120F10

KOA Speer Electronics, Inc.In Stock: 883RN73R2ATTD4120F10 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RN732ATTD4120F10 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 412 Ohms
• Tolerance: ±1%
• Package / Case: 0805 (2012 Metric)
• Composition: Thin Film
• Temperature Coefficient: ±10ppm/°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 0.1W specification
• Product status may transition from obsolete to active
• Packaging format may differ (e.g., Tape & Reel vs. bulk)
• Additional certifications (e.g., AEC-Q200) are permissible

The RN73R2ATTD4120F10 meets all mandatory matching parameters while offering increased power rating (0.125W) and active product status, making it a direct functional substitute.

Parameter Comparison

Engineering Selection Recommendations

The RN73R2ATTD4120F10 is the direct substitute for the obsolete RN732ATTD4120F10. Selection of this substitute is supported by the following engineering factors:

Product Status: The substitute part maintains active product status with KOA Speer Electronics, Inc., ensuring long-term availability and supply chain continuity compared to the obsolete main part.

Compliance & Certifications: Both parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating. The substitute adds AEC-Q200 automotive qualification, which does not restrict its use in non-automotive applications and provides additional quality assurance.

Electrical & Mechanical Equivalence: The substitute maintains identical resistance (412 Ohms), tolerance (±1%), package dimensions (0805 / 2012 Metric), temperature coefficient (±10ppm/°C), and operating temperature range (-55°C to 155°C).

Power Rating Enhancement: The substitute offers 0.125W (1/8W) power rating versus the original 0.1W (1/10W). This increased rating provides design margin and does not compromise circuit performance in applications originally specified for 0.1W.

Packaging Flexibility: The substitute is available in Tape & Reel (TR) format, supporting automated assembly processes while maintaining identical physical footprint and electrical characteristics.

Frequently Asked Questions (FAQ)

Q: Can the RN73R2ATTD4120F10 be used as a direct replacement for the RN732ATTD4120F10 in existing designs?

A: Yes. The substitute part maintains identical resistance value (412 Ohms), tolerance (±1%), package format (0805 / 2012 Metric), temperature coefficient (±10ppm/°C), and operating temperature range (-55°C to 155°C). The increased power rating (0.125W vs. 0.1W) and active product status make it a direct functional equivalent.

Q: What is the significance of the higher power rating on the substitute part?

A: The RN73R2ATTD4120F10 is rated at 0.125W (1/8W) compared to the original 0.1W (1/10W). This higher rating provides additional thermal margin and does not negatively impact circuit operation. Applications originally designed for 0.1W dissipation will operate within the substitute's rated specifications.

Q: Does the AEC-Q200 automotive qualification on the substitute part affect its use in non-automotive applications?

A: No. AEC-Q200 certification represents an additional quality and reliability standard. Its presence on the substitute part does not restrict application scope and may provide enhanced reliability assurance for any end-use category.

Q: Are the physical dimensions and PCB footprints identical between the main part and substitute?

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 footprints are interchangeable.

Q: What is the difference between the packaging formats listed?

A: The main part (RN732ATTD4120F10) is available in standard packaging, while the substitute (RN73R2ATTD4120F10) is supplied in Tape & Reel (TR) format. Tape & Reel packaging is optimized for automated pick-and-place assembly processes. Both formats contain identical components with the same electrical and mechanical specifications.

Q: Are both parts RoHS compliant?

A: Yes. Both the RN732ATTD4120F10 and RN73R2ATTD4120F10 are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, indicating no moisture-related handling restrictions.