RN732ATTD4120D50 Equivalent & Substitute Parts

Part Overview

The RN732ATTD4120D50 is a 412 Ohms ±0.5% 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 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

RN732ATTD4120D50

KOA Speer Electronics, Inc.In Stock: 1099RN732ATTD4120D50 Datasheet

Current PartRFQ

RN73R2ATTD4120D50

KOA Speer Electronics, Inc.In Stock: 1043RN73R2ATTD4120D50 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RN732ATTD4120D50 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 412 Ohms
• Tolerance: ±0.5%
• Package format: 0805 (2012 Metric)
• Composition: Thin Film
• Temperature coefficient: ±50ppm/°C
• Operating temperature range: -55°C ~ 155°C
• Moisture resistance capability
• RoHS3 compliance

Allowable Variation:

• Power rating may be equal or higher than the original 0.1W specification
• Product status may transition from obsolete to active
• Packaging format (bulk vs. tape & reel) may differ
• Additional certifications (such as AEC-Q200) may be present

The substitute part RN73R2ATTD4120D50 meets all mandatory matching parameters while offering an increased power rating of 0.125W (1/8W) and active product status with automotive qualification.

Parameter Comparison

Engineering Selection Recommendations

The RN73R2ATTD4120D50 serves as a direct functional substitute for the obsolete RN732ATTD4120D50. Both components share identical electrical specifications (412 Ohms ±0.5%, ±50ppm/°C temperature coefficient) and mechanical form factor (0805 package, 2.00mm x 1.25mm dimensions).

The substitute part offers the following advantages:

• Active Product Status: The RN73R2ATTD4120D50 maintains active manufacturing status, ensuring long-term availability and supply chain continuity.
• Enhanced Power Rating: The increased power rating of 0.125W (1/8W) compared to the original 0.1W provides additional thermal margin in circuit applications.
• Automotive Qualification: AEC-Q200 certification qualifies this component for automotive-grade applications, expanding deployment scope.
• Regulatory Compliance: Both parts maintain ROHS3 compliance and unlimited moisture sensitivity level (MSL 1), ensuring compatibility with current manufacturing and environmental standards.

Selection of the RN73R2ATTD4120D50 is appropriate for all applications previously specified for the RN732ATTD4120D50, with no circuit redesign required.

Frequently Asked Questions (FAQ)

Q: Can the RN73R2ATTD4120D50 be used as a direct replacement for the RN732ATTD4120D50?

A: Yes. Both components share identical resistance (412 Ohms), tolerance (±0.5%), package format (0805), temperature coefficient (±50ppm/°C), and operating temperature range (-55°C ~ 155°C). The substitute part is electrically and mechanically compatible with the original specification.

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

A: The RN732ATTD4120D50 is rated at 0.1W (1/10W), while the RN73R2ATTD4120D50 is rated at 0.125W (1/8W). The higher power rating of the substitute part provides additional thermal dissipation capability and does not restrict its use in applications designed for the lower-rated original component.

Q: Are there packaging differences between these parts?

A: The RN732ATTD4120D50 is supplied in standard packaging, while the RN73R2ATTD4120D50 is available in Tape & Reel (TR) format. Both use the identical 0805 (2012 Metric) package case. Packaging format does not affect electrical or mechanical compatibility.

Q: Does the AEC-Q200 certification on the substitute part affect compatibility?

A: No. AEC-Q200 certification indicates automotive-grade qualification and represents an additional qualification level. This certification does not restrict use in non-automotive applications and does not alter the component's electrical characteristics or physical dimensions.

Q: Are both parts RoHS3 compliant?

A: Yes. Both the RN732ATTD4120D50 and RN73R2ATTD4120D50 are ROHS3 compliant and carry unlimited moisture sensitivity level (MSL 1), meeting current environmental and manufacturing standards.

Q: Why is the original part listed as obsolete?

A: The RN732ATTD4120D50 is classified as obsolete by the manufacturer. The RN73R2ATTD4120D50 represents the active production equivalent, ensuring continued availability and supply chain support for this resistance value and specification.