RN732ATTD1981F10 Equivalent & Substitute Parts

Part Overview

The RN732ATTD1981F10 is a 1.98 kOhms ±1% thin film chip resistor in 0805 (2012 Metric) package rated for 0.1W (1/10W) power dissipation. Manufactured by KOA Speer Electronics, Inc., this component features moisture-resistant construction and operates across -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

RN732ATTD1981F10

KOA Speer Electronics, Inc.In Stock: 1140RN732ATTD1981F10 Datasheet

Current PartRFQ

RN73R2ATTD1981F10

KOA Speer Electronics, Inc.In Stock: 947RN73R2ATTD1981F10 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RN732ATTD1981F10 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 1.98 kOhms
• Tolerance: ±1%
• Package type: 0805 (2012 Metric)
• Composition: Thin Film
• Temperature coefficient: ±10ppm/°C
• Operating temperature range: -55°C ~ 155°C
• Moisture resistance: Required
• RoHS3 compliance: Required

Allowable Variation:

• Power rating: May be equal to or greater than 0.1W
• Product status: Active status preferred for obsolete parts
• Packaging format: May differ (bulk vs. tape & reel)
• Additional certifications: May be present without conflict

The substitute part RN73R2ATTD1981F10 meets all mandatory parameters with an increased power rating of 0.125W (1/8W) and active product status, making it a direct functional equivalent.

Parameter Comparison

Engineering Selection Recommendations

The RN73R2ATTD1981F10 serves as the direct substitute for the obsolete RN732ATTD1981F10. Selection is based on the following engineering criteria:

Product Status Advantage: The substitute part maintains active manufacturing status, ensuring long-term availability and supply chain continuity compared to the obsolete main part.

Electrical Equivalence: Both parts share identical resistance (1.98 kOhms), tolerance (±1%), temperature coefficient (±10ppm/°C), and operating temperature range (-55°C ~ 155°C). The substitute's increased power rating (0.125W vs. 0.1W) provides additional thermal margin without affecting circuit performance in applications designed for the original 0.1W specification.

Compliance Alignment: Both parts maintain ROHS3 compliance, MSL Level 1 rating, and moisture-resistant thin film construction. The substitute adds AEC-Q200 automotive qualification, which does not conflict with standard industrial applications.

Physical Compatibility: Identical 0805 (2012 Metric) package dimensions and termination configuration ensure direct PCB layout compatibility without redesign requirements.

Frequently Asked Questions (FAQ)

Q: Can RN73R2ATTD1981F10 directly replace RN732ATTD1981F10 on existing PCBs?

A: Yes. Both parts share identical package dimensions (0.079" L x 0.049" W, 2.00mm x 1.25mm), height (0.024" maximum), and two-termination configuration. No PCB layout modifications are required.

Q: Does the higher power rating (0.125W vs. 0.1W) affect circuit operation?

A: No. The substitute's increased power rating provides additional thermal capacity without changing electrical characteristics. Circuits designed for 0.1W operation function identically with the 0.125W-rated substitute.

Q: Are there packaging format differences between these parts?

A: The main part is supplied in standard packaging, while the substitute is available in Tape & Reel (TR) format. Both formats contain identical components; packaging format selection depends on assembly process requirements.

Q: What is the significance of AEC-Q200 certification on the substitute?

A: AEC-Q200 is an automotive qualification standard. The substitute's inclusion of this certification indicates compliance with automotive reliability and quality standards. This certification does not restrict use in non-automotive applications.

Q: Are both parts RoHS3 compliant?

A: Yes. Both RN732ATTD1981F10 and RN73R2ATTD1981F10 are ROHS3 compliant with MSL Level 1 (unlimited moisture sensitivity level), meeting environmental and regulatory requirements for industrial and commercial applications.

Q: Why is the main part classified as obsolete?

A: Obsolescence reflects manufacturing discontinuation by KOA Speer Electronics. The substitute RN73R2ATTD1981F10 remains in active production, providing equivalent functionality with improved availability.