RN731ETTP1130F25 Equivalent & Substitute Parts

Part Overview

The RN731ETTP1130F25 is a 113 Ohm ±1% thin film chip resistor in 0402 (1005 Metric) package rated at 0.063W (1/16W) manufactured by KOA Speer Electronics. This part operates across -55°C to 155°C with ±25ppm/°C temperature coefficient and features moisture-resistant construction. The product is currently obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity.

Key Parameters

Parameter	Value
Resistance	113 Ohms
Tolerance	±1%
Power Rating	0.063W (1/16W)
Package	0402 (1005 Metric)
Composition	Thin Film
Temperature Coefficient	±25ppm/°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 equivalence across the following parameters: resistance value (113 Ohms), package type (0402/1005 Metric), power rating (0.063W/1/16W), composition (thin film), temperature coefficient (±25ppm/°C), operating temperature range (-55°C to 155°C), and compliance certifications (ROHS3, MSL 1).

Substitute parts are grouped into two categories:

Direct Substitutes maintain the original ±1% tolerance specification and are functionally interchangeable without design modification.

Upgrade Substitutes offer improved tolerance specifications (±0.1%, ±0.25%, ±0.5%, ±0.05%) or enhanced features such as automotive AEC-Q200 qualification and anti-sulfur construction. These parts meet or exceed the original electrical and mechanical requirements and are suitable for applications requiring higher precision or automotive-grade reliability.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Composition	Temp Coeff	Operating Temp	Features	Status
RN731ETTP1130F25	KOA Speer Electronics	113 Ω	±1%	0.063	0402	Thin Film	±25ppm/°C	-55°C to 155°C	Moisture Resistant	Obsolete
RN73R1ETTP1130F25	KOA Speer Electronics	113 Ω	±1%	0.063	0402	Thin Film	±25ppm/°C	-55°C to 155°C	Automotive AEC-Q200, Moisture Resistant	Active
RT0402FRD07113RL	YAGEO	113 Ω	±1%	0.063	0402	Thin Film	±25ppm/°C	-55°C to 155°C	—	Active
AT0402BRD07113RL	YAGEO	113 Ω	±0.1%	0.063	0402	Thin Film	±25ppm/°C	-55°C to 155°C	Anti-Sulfur, Automotive AEC-Q200, Moisture Resistant	Active
AT0402CRD07113RL	YAGEO	113 Ω	±0.25%	0.063	0402	Thin Film	±25ppm/°C	-55°C to 155°C	Anti-Sulfur, Automotive AEC-Q200, Moisture Resistant	Active
AT0402DRD07113RL	YAGEO	113 Ω	±0.5%	0.063	0402	Thin Film	±25ppm/°C	-55°C to 155°C	Anti-Sulfur, Automotive AEC-Q200, Moisture Resistant	Active
CPF0402B113RE1	TE Connectivity Passive Product	113 Ω	±0.1%	0.063	0402	Thin Film	±25ppm/°C	-55°C to 155°C	—	Active
ERA-2AEB1130X	Panasonic Electronic Components	113 Ω	±0.1%	0.063	0402	Thin Film	±25ppm/°C	-55°C to 155°C	Automotive AEC-Q200	Active
RG1005P-1130-B-T5	Susumu	113 Ω	±0.1%	0.063	0402	Thin Film	±25ppm/°C	-55°C to 155°C	Anti-Sulfur, Automotive AEC-Q200	Active
RG1005P-1130-D-T10	Susumu	113 Ω	±0.5%	0.063	0402	Thin Film	±25ppm/°C	-55°C to 155°C	Anti-Sulfur, Automotive AEC-Q200	Active
RG1005P-1130-W-T5	Susumu	113 Ω	±0.05%	0.063	0402	Thin Film	±25ppm/°C	-55°C to 155°C	Anti-Sulfur, Automotive AEC-Q200	Active

Engineering Selection Recommendations

For direct replacement of the obsolete RN731ETTP1130F25, the RN73R1ETTP1130F25 from KOA Speer Electronics provides the closest functional match with identical electrical specifications and active product status. This part maintains ±1% tolerance and adds automotive AEC-Q200 qualification.

For applications requiring higher precision, the AT0402BRD07113RL, CPF0402B113RE1, ERA-2AEB1130X, and RG1005P-1130-B-T5 offer ±0.1% tolerance with active status and ROHS3 compliance. The AT0402BRD07113RL and RG1005P-1130-B-T5 include automotive AEC-Q200 qualification and anti-sulfur features suitable for harsh environments.

For general-purpose applications where ±1% tolerance is acceptable, the RT0402FRD07113RL from YAGEO provides an active, ROHS3-compliant alternative with established supply availability.

All listed substitutes maintain identical package geometry (0402/1005 Metric), power rating (0.063W), temperature coefficient (±25ppm/°C), and operating temperature range (-55°C to 155°C), ensuring mechanical and thermal compatibility without PCB redesign.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with tighter tolerance than the original ±1% specification?

A: Yes. Parts with ±0.1%, ±0.25%, ±0.5%, or ±0.05% tolerance are electrically compatible and will function in applications designed for ±1% tolerance. Tighter tolerance parts provide improved accuracy for precision circuits without requiring design changes.

Q: Are all substitute parts in the same 0402 package?

A: Yes. All listed substitutes use the 0402 (1005 Metric) package with identical footprint dimensions (0.039" L × 0.020" W / 1.00mm × 0.50mm). No PCB layout modifications are required.

Q: What is the difference between direct substitutes and upgrade substitutes?

A: Direct substitutes maintain the original ±1% tolerance specification. Upgrade substitutes offer improved tolerance (±0.1% or better) and may include additional features such as automotive AEC-Q200 qualification or anti-sulfur construction. Both categories are electrically and mechanically compatible.

Q: Do all substitute parts meet ROHS3 compliance?

A: Yes. All listed substitute parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level, matching the original part's environmental compliance profile.

Q: Which substitute is recommended for automotive applications?

A: Parts with automotive AEC-Q200 qualification include RN73R1ETTP1130F25, AT0402BRD07113RL, AT0402CRD07113RL, AT0402DRD07113RL, ERA-2AEB1130X, RG1005P-1130-B-T5, RG1005P-1130-D-T10, and RG1005P-1130-W-T5. These parts meet automotive reliability standards and are suitable for vehicle electronics.

Q: Can I mix different substitute parts in the same design?

A: Yes. All substitute parts meet the same electrical and mechanical requirements. However, maintaining consistent part sourcing within a production run is recommended for supply chain stability and traceability.

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