RG2012P-2373-B-T1 Equivalent & Substitute Parts

Part Overview

The RG2012P-2373-B-T1 is a 237 kOhms ±0.1% thin film chip resistor in 0805 (2012 Metric) package rated for 0.125W (1/8W) power dissipation. Manufactured by Susumu, this component features anti-sulfur coating and automotive AEC-Q200 qualification, suitable for high-reliability applications across -55°C to 155°C operating temperature range.

The RG2012P-2373-B-T1 is classified as obsolete. Equivalent and substitute parts are available from multiple manufacturers with identical or enhanced electrical and mechanical specifications, ensuring design continuity and supply chain flexibility.

Key Parameters

Parameter	Value
Resistance	237 kOhms
Tolerance	±0.1%
Power Rating	0.125W (1/8W)
Package	0805 (2012 Metric)
Composition	Thin Film
Temperature Coefficient	±25ppm/°C
Operating Temperature Range	-55°C to 155°C
Automotive Rating	AEC-Q200
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following critical parameters:

Mandatory Matching Parameters:

Resistance value: 237 kOhms
Package type: 0805 (2012 Metric)
Composition: Thin Film
Tolerance: ±0.1% or tighter
Power rating: 0.125W minimum
Operating temperature range: -55°C to 155°C minimum
RoHS3 compliance
MSL rating: 1 (Unlimited)

Allowable Variations:

Temperature coefficient: ±25ppm/°C or better (lower values represent improved stability)
Packaging format: Tape & Reel acceptable for manufacturing environments
Automotive certification: AEC-Q200 preferred but not mandatory for all applications
Manufacturer: Multiple qualified sources acceptable

Substitute parts are grouped into two categories:

Direct Equivalents: Parts meeting all mandatory parameters with identical or superior temperature coefficient performance. These include RG2012P-2373-B-T5, ERA-6AEB2373V, RT0805BRD07237KL, TNPW0805237KBEEA, and TNPW0805237KBEEN.

Upgraded Alternatives: Parts exceeding base specifications through improved tolerance (±0.05%), enhanced temperature coefficient (±10ppm/°C or ±15ppm/°C), or increased power rating (0.25W or 0.26W). These include RG2012N-2373-B-T5, RG2012N-2373-W-T1, RG2012P-2373-W-T5, 2-2176094-9, and RP73D2A237KBTDF.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Temp Coeff (ppm/°C)	Op Temp Range	AEC-Q200	Product Status
RG2012P-2373-B-T1	Susumu	237 kΩ	±0.1%	0.125	±25	-55 to 155°C	Yes	Obsolete
RG2012P-2373-B-T5	Susumu	237 kΩ	±0.1%	0.125	±25	-55 to 155°C	Yes	Active
RG2012N-2373-B-T5	Susumu	237 kΩ	±0.1%	0.125	±10	-55 to 155°C	Yes	Active
RG2012N-2373-W-T1	Susumu	237 kΩ	±0.05%	0.125	±10	-55 to 155°C	Yes	Active
RG2012P-2373-W-T5	Susumu	237 kΩ	±0.05%	0.125	±25	-55 to 155°C	Yes	Active
2-2176094-9	TE Connectivity	237 kΩ	±0.1%	0.25	±25	-55 to 155°C	No	Active
ERA-6AEB2373V	Panasonic	237 kΩ	±0.1%	0.125	±25	-55 to 155°C	Yes	Active
RT0805BRD07237KL	YAGEO	237 kΩ	±0.1%	0.125	±25	-55 to 155°C	No	Active
TNPW0805237KBEEA	Vishay Dale	237 kΩ	±0.1%	0.26	±25	-55 to 175°C	Yes	Active
TNPW0805237KBEEN	Vishay Dale	237 kΩ	±0.1%	0.26	±25	-55 to 175°C	Yes	Active
RP73D2A237KBTDF	TE Connectivity	237 kΩ	±0.1%	0.125	±15	-55 to 155°C	No	Active

Engineering Selection Recommendations

Primary Direct Equivalent (Active Status): RG2012P-2373-B-T5 is the direct successor to the obsolete RG2012P-2373-B-T1, manufactured by Susumu with identical electrical specifications and AEC-Q200 automotive qualification. This part maintains full compatibility with existing designs and is recommended as the first substitution choice.

Alternative Direct Equivalents: ERA-6AEB2373V (Panasonic) and RT0805BRD07237KL (YAGEO) provide functionally equivalent performance with active product status and ROHS3 compliance. ERA-6AEB2373V carries AEC-Q200 certification. Both are suitable for direct replacement in automotive and industrial applications.

Enhanced Stability Option: RG2012N-2373-B-T5 offers improved temperature coefficient performance (±10ppm/°C versus ±25ppm/°C) while maintaining all other specifications. This upgrade is applicable where enhanced frequency stability or precision analog circuit performance is required.

Tighter Tolerance Option: RG2012N-2373-W-T1 and RG2012P-2373-W-T5 provide ±0.05% tolerance versus the original ±0.1%, suitable for precision measurement and calibration circuits. Both maintain AEC-Q200 qualification and active product status.

Higher Power Rating Options: 2-2176094-9 (TE Connectivity, 0.25W) and TNPW0805237KBEEA/TNPW0805237KBEEN (Vishay Dale, 0.26W) accommodate applications requiring increased power dissipation. TNPW series additionally extends operating temperature to 175°C and includes moisture-resistant coating.

Superior Temperature Coefficient Option: RP73D2A237KBTDF (TE Connectivity) provides ±15ppm/°C temperature coefficient performance, intermediate between standard and premium grades, with active product status.

All recommended substitutes maintain 0805 package compatibility, thin film composition, and ROHS3 compliance. Selection should be based on specific application requirements for tolerance, temperature stability, power dissipation, and automotive certification.

Frequently Asked Questions (FAQ)

Q: Can RG2012P-2373-B-T5 directly replace RG2012P-2373-B-T1 in existing designs?

A: Yes. RG2012P-2373-B-T5 is the active production equivalent with identical electrical specifications (237 kΩ, ±0.1%, 0.125W, ±25ppm/°C) and mechanical package (0805). The primary difference is product status (Active versus Obsolete) and packaging format (Tape & Reel). No circuit redesign is required.

Q: What is the difference between Susumu RG2012N and RG2012P series?

A: The RG2012N series provides improved temperature coefficient performance (±10ppm/°C) compared to RG2012P (±25ppm/°C). Both series maintain identical resistance, tolerance, power rating, and package specifications. Selection depends on application requirements for frequency stability and thermal drift performance.

Q: Are Panasonic ERA-6AEB2373V and YAGEO RT0805BRD07237KL suitable for automotive applications?

A: ERA-6AEB2373V carries AEC-Q200 automotive qualification and is suitable for automotive applications. RT0805BRD07237KL does not carry AEC-Q200 certification and is suitable for industrial and consumer applications. For automotive designs, ERA-6AEB2373V is the preferred alternative.

Q: Why do TNPW0805237KBEEA and TNPW0805237KBEEN have higher power ratings (0.26W) than the original part (0.125W)?

A: Vishay Dale TNPW series resistors are designed with enhanced thermal management characteristics. The 0.26W rating reflects the component's actual power dissipation capability in standard PCB mounting conditions. This upgrade provides additional thermal margin for applications with elevated ambient temperatures or high-frequency operation.

Q: Can I use a 0.25W or 0.26W rated resistor in place of a 0.125W rated resistor?

A: Yes. Higher power-rated components are backward compatible with lower power applications. The 0805 package dimensions remain identical. Higher power ratings provide additional thermal margin and do not negatively impact circuit performance. This substitution is acceptable for all applications.

Q: What does ±0.05% tolerance mean compared to ±0.1%?

A: ±0.05% tolerance indicates tighter resistance value control. For a 237 kΩ resistor, ±0.1% tolerance allows ±237 Ω variation, while ±0.05% tolerance allows ±118.5 Ω variation. Tighter tolerance parts (RG2012N-2373-W-T1, RG2012P-2373-W-T5) are required for precision analog circuits, measurement instrumentation, and reference networks.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance certification. All parts maintain Moisture Sensitivity Level 1 (Unlimited) rating, indicating no special moisture handling requirements during storage or assembly.

Q: What is the significance of temperature coefficient (ppm/°C) in resistor selection?

A: Temperature coefficient indicates resistance value change per degree Celsius. Lower values represent better stability. ±25ppm/°C (standard grade) is suitable for general-purpose applications. ±10ppm/°C (precision grade) is required for frequency-critical circuits, oscillators, and precision analog networks. ±15ppm/°C (intermediate grade) provides balanced performance for mixed-signal applications.

Q: Can I substitute a part with extended operating temperature range (-55°C to 175°C) for the original (-55°C to 155°C)?

A: Yes. Extended temperature range parts (TNPW0805237KBEEA, TNPW0805237KBEEN) are suitable for applications operating within the original temperature range. Extended range provides additional design margin for high-temperature environments and is a valid upgrade path.

Q: What packaging format should I specify for production procurement?

A: Tape & Reel (TR) packaging is standard for automated assembly. All active substitute parts are available in Tape & Reel format. The original RG2012P-2373-B-T1 was available in bulk packaging; the T5 variant specifies Tape & Reel format for manufacturing compatibility.

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