RN732ATTD1302B50 Equivalent & Substitute Parts

Part Overview

The RN732ATTD1302B50 is a 13 kOhms ±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 ±50ppm/°C and operates across -55°C to 155°C. The part is classified as obsolete, necessitating identification of active equivalent and substitute components for ongoing design support and procurement.

Key Parameters

Parameter	Value
Resistance	13 kOhms
Tolerance	±0.1%
Power Rating	0.1W (1/10W)
Package	0805 (2012 Metric)
Composition	Thin Film
Temperature Coefficient	±50ppm/°C
Operating Temperature Range	-55°C to 155°C
Moisture Sensitivity Level	1 (Unlimited)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict adherence to the following parameters:

Core Electrical Parameters (Non-Negotiable):

Resistance value: 13 kOhms
Tolerance: ±0.1%
Package: 0805 (2012 Metric)
Composition: Thin Film
Operating temperature range: -55°C to 155°C minimum
Moisture Sensitivity Level: 1 (Unlimited)

Power Rating Consideration: The main part is rated at 0.1W (1/10W). Substitute parts rated at 0.125W (1/8W) or higher are acceptable as they provide equal or greater power dissipation capability. Parts rated below 0.1W are not acceptable.

Temperature Coefficient: The main part specifies ±50ppm/°C. Substitute parts with equal or lower temperature coefficient values (±25ppm/°C, ±15ppm/°C, ±10ppm/°C) meet or exceed performance specifications.

Compliance & Certifications: All listed substitutes maintain ROHS3 compliance and MSL 1 rating. Automotive AEC-Q200 certification and anti-sulfur features are additional qualifications that do not disqualify substitution but indicate enhanced reliability for specific applications.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Temp Coeff (ppm/°C)	Operating Temp (°C)	Product Status	Features
RN732ATTD1302B50	KOA Speer Electronics	13 kOhms	±0.1%	0.1	±50	-55 to 155	Obsolete	Moisture Resistant
RN73R2ATTD1302B50	KOA Speer Electronics	13 kOhms	±0.1%	0.125	±50	-55 to 155	Active	Automotive AEC-Q200, Moisture Resistant
RT0805BRE0713KL	YAGEO	13 kOhms	±0.1%	0.125	±50	-55 to 155	Active	Thin Film
1676183-5	TE Connectivity Passive Product	13 kOhms	±0.1%	0.1	±10	-55 to 155	Active	Thin Film
AT0805BRD0713KL	YAGEO	13 kOhms	±0.1%	0.125	±25	-55 to 155	Active	Anti-Sulfur, Automotive AEC-Q200, Moisture Resistant
CPF0805B13KE1	TE Connectivity Passive Product	13 kOhms	±0.1%	0.1	±25	-55 to 155	Active	Thin Film
CRT0805-BW-1302ELF	Bourns Inc.	13 kOhms	±0.1%	0.125	±10	-55 to 155	Active	Current Sense Thin Film
CRT0805-BY-1302ELF	Bourns Inc.	13 kOhms	±0.1%	0.125	±25	-55 to 155	Active	Current Sense Thin Film
ERA-6AEB133V	Panasonic Electronic Components	13 kOhms	±0.1%	0.125	±25	-55 to 155	Active	Automotive AEC-Q200 Thin Film
ERA-6APB133V	Panasonic Electronic Components	13 kOhms	±0.1%	0.125	±15	-55 to 155	Active	Automotive AEC-Q200 Thin Film
ERA-6ARB133V	Panasonic Electronic Components	13 kOhms	±0.1%	0.125	±10	-55 to 155	Active	Automotive AEC-Q200 Thin Film

Engineering Selection Recommendations

All listed substitute parts meet the core electrical and mechanical requirements for direct replacement of RN732ATTD1302B50. Selection among active alternatives should be based on the following criteria:

For Standard Applications: RN73R2ATTD1302B50 (KOA Speer Electronics) provides the closest functional match as a direct KOA product line upgrade with identical temperature coefficient and enhanced power rating. This part maintains the same manufacturer lineage and moisture-resistant construction.

For Automotive Applications: ERA-6ARB133V, ERA-6APB133V, or ERA-6AEB133V (Panasonic) are qualified to AEC-Q200 automotive standards. ERA-6ARB133V offers the lowest temperature coefficient (±10ppm/°C) among automotive-qualified options. AT0805BRD0713KL (YAGEO) combines automotive qualification with anti-sulfur protection.

For Current Sense Applications: CRT0805-BW-1302ELF or CRT0805-BY-1302ELF (Bourns Inc.) are specifically designed for current sensing circuits with thin film construction. CRT0805-BW-1302ELF features ±10ppm/°C temperature coefficient.

For Precision Applications: 1676183-5 (TE Connectivity) or CPF0805B13KE1 (TE Connectivity) maintain the original 0.1W power rating with improved temperature coefficients (±10ppm/°C and ±25ppm/°C respectively), suitable for applications requiring tighter thermal stability.

All substitute parts are active products with current manufacturing status and full ROHS3 compliance.

Frequently Asked Questions (FAQ)

Q: Can I use a 0.125W (1/8W) rated resistor as a substitute for the 0.1W (1/10W) original part?

A: Yes. Higher power ratings provide greater thermal margin and are electrically compatible. The 0.125W rating exceeds the original specification and does not compromise circuit performance.

Q: Does temperature coefficient affect substitution eligibility?

A: Temperature coefficient does not disqualify substitution. The original part specifies ±50ppm/°C. Substitute parts with lower temperature coefficients (±25ppm/°C, ±15ppm/°C, ±10ppm/°C) provide equal or superior thermal stability and are fully compatible.

Q: Are automotive AEC-Q200 qualified parts suitable for non-automotive applications?

A: Yes. AEC-Q200 qualification indicates enhanced reliability testing and environmental stress screening. These parts are fully compatible with standard industrial and commercial applications and provide additional quality assurance.

Q: What is the significance of anti-sulfur construction?

A: Anti-sulfur features protect against corrosion in high-sulfur environments. This is an optional enhancement that does not affect substitution for standard applications but provides additional protection in corrosive atmospheres.

Q: Can I substitute between different manufacturers?

A: Yes, provided all core electrical parameters match: 13 kOhms resistance, ±0.1% tolerance, 0805 package, thin film composition, and -55°C to 155°C operating range. Manufacturer differences do not affect electrical compatibility.

Q: Is moisture sensitivity level important for substitution?

A: All listed substitutes maintain MSL 1 (Unlimited) rating, matching the original part. This ensures equivalent moisture handling and storage requirements.

Q: What packaging options are available?

A: Substitute parts are available in Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel® formats. Packaging format does not affect electrical performance and is determined by procurement and assembly requirements.

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