RN732ATTD1150B10 Equivalent & Substitute Parts

Part Overview

The RN732ATTD1150B10 is a 115 Ohm ±0.1% thin film chip resistor in 0805 (2012 Metric) package rated at 0.1W (1/10W) power dissipation. Manufactured by KOA Speer Electronics, Inc., this component features moisture-resistant construction with a temperature coefficient of ±10ppm/°C and operates across -55°C to 155°C. The part is currently obsolete, necessitating identification of functionally equivalent alternatives from active product lines that maintain electrical and mechanical compatibility for direct board-level substitution.

Key Parameters

Parameter	Value
Resistance	115 Ohms
Tolerance	±0.1%
Power Rating	0.1W (1/10W)
Package / Case	0805 (2012 Metric)
Composition	Thin Film
Temperature Coefficient	±10ppm/°C
Operating Temperature Range	-55°C to 155°C
Moisture Sensitivity Level	1 (Unlimited)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the RN732ATTD1150B10 is determined by the following critical parameters:

Mandatory Compatibility Criteria:

Resistance value: 115 Ohms (exact match required)
Package / Case: 0805 (2012 Metric) (physical and electrical footprint compatibility)
Tolerance: ±0.1% or tighter (equal or superior precision)
Temperature Coefficient: ±10ppm/°C or better (equal or superior stability)
Operating Temperature Range: -55°C to 155°C minimum (equal or superior range)
Composition: Thin Film (electrical performance characteristics)
RoHS3 Compliance: Required for regulatory compatibility

Power Rating Consideration: The original part is rated at 0.1W (1/10W). Substitute parts rated at 0.125W (1/8W) or higher are electrically compatible and provide enhanced thermal margin. Parts with lower power ratings are not acceptable.

Substitutes are organized into two categories:

Direct Substitutes – Parts meeting all mandatory criteria with identical or equivalent electrical specifications
Upgrade Substitutes – Parts exceeding original specifications (tighter tolerance, lower temperature coefficient, enhanced features) while maintaining full backward compatibility

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Temp Coeff (ppm/°C)	Temp Range (°C)	Package	Status	Features
RN732ATTD1150B10	KOA Speer	115Ω	±0.1%	0.1	±10	-55 to 155	0805	Obsolete	Moisture Resistant
RN73R2ATTD1150B10	KOA Speer	115Ω	±0.1%	0.125	±10	-55 to 155	0805	Active	Automotive AEC-Q200, Moisture Resistant
RN73C2A115RBTDF	TE Connectivity	115Ω	±0.1%	0.1	±10	-55 to 155	0805	Active	Thin Film
RN73C2A115RBTG	TE Connectivity	115Ω	±0.1%	0.1	±10	-55 to 155	0805	Active	Thin Film
RNCF0805BKT115R	Stackpole Electronics	115Ω	±0.1%	0.125	±10	-55 to 155	0805	Active	Automotive AEC-Q200
RT0805BRB07115RL	YAGEO	115Ω	±0.1%	0.125	±10	-55 to 155	0805	Active	Thin Film
RG2012N-1150-B-T5	Susumu	115Ω	±0.1%	0.125	±10	-55 to 155	0805	Active	Anti-Sulfur, Automotive AEC-Q200
RG2012N-1150-W-T1	Susumu	115Ω	±0.05%	0.125	±10	-55 to 155	0805	Active	Anti-Sulfur, Automotive AEC-Q200
RG2012N-1150-W-T5	Susumu	115Ω	±0.05%	0.125	±10	-55 to 155	0805	Active	Anti-Sulfur, Automotive AEC-Q200
RG2012V-1150-B-T5	Susumu	115Ω	±0.1%	0.125	±5	-55 to 155	0805	Active	Anti-Sulfur, Automotive AEC-Q200
RG2012V-1150-P-T1	Susumu	115Ω	±0.02%	0.125	±5	-55 to 155	0805	Active	Anti-Sulfur, Automotive AEC-Q200

Engineering Selection Recommendations

Direct Substitutes (Equivalent Electrical Performance):

The following parts provide direct functional equivalence to RN732ATTD1150B10 and are suitable for one-to-one replacement:

RN73C2A115RBTDF (TE Connectivity) – Identical electrical specifications with active product status. Available in Tape & Reel packaging. Highest inventory availability (1505 pcs).
RN73C2A115RBTG (TE Connectivity) – Identical to RN73C2A115RBTDF with Strip packaging alternative. Active status with 948 pcs in stock.
RT0805BRB07115RL (YAGEO) – Meets all electrical requirements with 0.125W power rating providing thermal margin. Active product with 1113 pcs available.

Enhanced Substitutes (Superior Specifications):

The following parts exceed original specifications while maintaining full backward compatibility:

RN73R2ATTD1150B10 (KOA Speer) – Same manufacturer as original part with upgraded 0.125W power rating and Automotive AEC-Q200 certification. Active product status with 880 pcs in stock.
RNCF0805BKT115R (Stackpole Electronics) – Automotive AEC-Q200 rated with 0.125W power dissipation. Active status with 867 pcs available.
RG2012N-1150-B-T5 (Susumu) – Automotive AEC-Q200 with Anti-Sulfur feature and 0.125W rating. Active product with 1036 pcs in stock.
RG2012N-1150-W-T1 and RG2012N-1150-W-T5 (Susumu) – Tighter ±0.05% tolerance with Anti-Sulfur and Automotive AEC-Q200 features. Active status with 855 and 988 pcs respectively.
RG2012V-1150-B-T5 (Susumu) – Superior ±5ppm/°C temperature coefficient with Anti-Sulfur and Automotive AEC-Q200. Active product with 660 pcs available.
RG2012V-1150-P-T1 (Susumu) – Highest precision at ±0.02% tolerance with ±5ppm/°C temperature coefficient. Anti-Sulfur and Automotive AEC-Q200 rated. Active status with 863 pcs in stock.

Selection Criteria:

For cost-optimized replacement: RN73C2A115RBTDF or RN73C2A115RBTG
For automotive applications: RN73R2ATTD1150B10, RNCF0805BKT115R, or Susumu RG series
For precision-critical circuits: RG2012V-1150-P-T1 or RG2012N-1150-W series
For corrosive environments: Susumu RG series (Anti-Sulfur feature)

All recommended substitutes are ROHS3 compliant and maintain MSL 1 (Unlimited) moisture sensitivity rating.

Frequently Asked Questions (FAQ)

Q: Can I use a 0.125W (1/8W) rated resistor in place of the original 0.1W (1/10W) part?

A: Yes. The 0.125W rating provides equal or greater power dissipation capability. This is a direct upgrade that improves thermal margin without affecting electrical performance. All substitute parts with 0.125W ratings are fully compatible.

Q: What is the difference between Direct Substitutes and Upgrade Substitutes?

A: Direct Substitutes (RN73C2A115RBTDF, RN73C2A115RBTG, RT0805BRB07115RL) match the original electrical specifications exactly. Upgrade Substitutes exceed original specifications in tolerance, temperature coefficient, or features (such as Automotive AEC-Q200 or Anti-Sulfur treatment) while remaining fully backward compatible.

Q: Does the packaging format (Tape & Reel vs. Strip) affect electrical performance?

A: No. Packaging format (Tape & Reel or Strip) affects only handling and assembly logistics, not electrical characteristics. Both formats contain identical components. Selection should be based on assembly equipment compatibility.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant, matching the regulatory status of the original RN732ATTD1150B10.

Q: What does the Automotive AEC-Q200 rating mean?

A: AEC-Q200 is an automotive qualification standard indicating the part meets stringent reliability and performance requirements for automotive applications. Parts with this rating are suitable for both automotive and general industrial use.

Q: Can I use a resistor with ±0.05% or ±0.02% tolerance instead of ±0.1%?

A: Yes. Tighter tolerance specifications are fully compatible and represent an upgrade. A ±0.05% or ±0.02% resistor will perform identically to the ±0.1% original while providing superior precision for tolerance-sensitive circuits.

Q: What is the significance of the Anti-Sulfur feature in Susumu RG series parts?

A: Anti-Sulfur treatment protects the resistor from corrosion in high-sulfur environments, extending component life in industrial or harsh operating conditions. This feature is optional for general applications but beneficial for long-term reliability in corrosive atmospheres.

Q: Is the temperature coefficient difference between ±10ppm/°C and ±5ppm/°C significant?

A: Lower temperature coefficient indicates superior stability across temperature variations. The ±5ppm/°C specification (Susumu RG2012V series) provides better performance in temperature-sensitive applications such as precision measurement circuits or oscillators. For general applications, ±10ppm/°C is adequate.

Q: Why is the original RN732ATTD1150B10 marked as Obsolete?

A: Obsolescence indicates the manufacturer has discontinued production. Active alternatives from other manufacturers or newer product lines from KOA Speer (such as RN73R2ATTD1150B10) provide equivalent or superior functionality with ongoing supply availability.

Q: Can I mix different substitute part numbers in the same circuit board design?

A: Yes, provided all selected parts meet the minimum electrical requirements (115Ω ±0.1%, 0.1W minimum, 0805 package, -55°C to 155°C). However, for consistency and simplified procurement, using a single part number across identical resistor positions is recommended.

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