RG2012P-1241-C-T5 Equivalent & Substitute Parts

Part Overview

The RG2012P-1241-C-T5 is a 1.24 kOhms ±0.25% 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 in temperature ranges from -55°C to 155°C.

The RG2012P-1241-C-T5 is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for production and field replacement applications. Active alternatives with identical or improved electrical characteristics are available from Susumu and other manufacturers.

Key Parameters

Parameter	Value
Resistance	1.24 kOhms
Tolerance	±0.25%
Power Rating	0.125W (1/8W)
Package / Case	0805 (2012 Metric)
Composition	Thin Film
Operating Temperature Range	-55°C to 155°C
Features	Anti-Sulfur, Automotive AEC-Q200
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the RG2012P-1241-C-T5 is determined by the following critical parameters:

Mandatory Compatibility Parameters:

Resistance value: 1.24 kOhms (exact match required)
Package / Case: 0805 (2012 Metric) (physical and electrical compatibility)
Power rating: 0.125W minimum (1/8W)
Operating temperature range: -55°C to 155°C minimum
Composition: Thin film technology

Tolerance and Performance Parameters: Substitute parts may feature improved tolerance specifications (±0.1%, ±0.05%, ±0.02%) compared to the original ±0.25%. Tighter tolerances represent functional upgrades and are electrically compatible. Temperature coefficient variations (±5ppm/°C, ±10ppm/°C, ±25ppm/°C) do not prevent substitution but indicate performance tier differences.

Compliance and Certification: All substitute parts maintain ROHS3 compliance, MSL 1 rating, and automotive AEC-Q200 qualification where specified. These certifications ensure suitability for equivalent application environments.

Packaging Format: The original part is supplied in cut tape format. Substitute parts are available in Tape & Reel (TR) packaging, which is standard for production environments and does not affect electrical performance.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Temp Coeff (ppm/°C)	Operating Temp (°C)	Package	Status	AEC-Q200
RG2012P-1241-C-T5	Susumu	1.24 kΩ	±0.25%	0.125	±25	-55 to 155	0805	Obsolete	Yes
RG2012N-1241-B-T5	Susumu	1.24 kΩ	±0.1%	0.125	±10	-55 to 155	0805	Active	Yes
RG2012N-1241-W-T1	Susumu	1.24 kΩ	±0.05%	0.125	±10	-55 to 155	0805	Active	Yes
RG2012P-1241-B-T5	Susumu	1.24 kΩ	±0.1%	0.125	±25	-55 to 155	0805	Active	Yes
RG2012P-1241-W-T5	Susumu	1.24 kΩ	±0.05%	0.125	±25	-55 to 155	0805	Active	Yes
RG2012V-1241-B-T5	Susumu	1.24 kΩ	±0.1%	0.125	±5	-55 to 155	0805	Active	Yes
RG2012V-1241-P-T1	Susumu	1.24 kΩ	±0.02%	0.125	±5	-55 to 155	0805	Active	Yes
RG2012V-1241-W-T1	Susumu	1.24 kΩ	±0.05%	0.125	±5	-55 to 155	0805	Active	Yes
RG2012V-1241-W-T5	Susumu	1.24 kΩ	±0.05%	0.125	±5	-55 to 155	0805	Active	Yes
RT0805CRD071K24L	YAGEO	1.24 kΩ	±0.25%	0.125	±25	-55 to 155	0805	Active	No
ERA-6AEB1241V	Panasonic Electronic Components	1.24 kΩ	±0.1%	0.125	±25	-55 to 155	0805	Active	Yes

Engineering Selection Recommendations

Primary Substitutes (Susumu RG Series - Active Status):

The Susumu RG2012 series provides direct functional equivalents with improved specifications. RG2012P-1241-B-T5 and RG2012P-1241-W-T5 maintain the same temperature coefficient (±25ppm/°C) as the original part while offering tighter tolerance specifications (±0.1% and ±0.05% respectively). Both are active products with ROHS3 compliance and AEC-Q200 automotive qualification.

RG2012V series variants (RG2012V-1241-B-T5, RG2012V-1241-W-T1, RG2012V-1241-W-T5, RG2012V-1241-P-T1) represent higher-performance alternatives with superior temperature coefficient performance (±5ppm/°C) and tighter tolerances. RG2012V-1241-P-T1 offers the highest precision at ±0.02% tolerance.

RG2012N series parts (RG2012N-1241-B-T5, RG2012N-1241-W-T1) provide mid-tier performance with ±10ppm/°C temperature coefficient and active product status.

Cross-Manufacturer Substitute:

RT0805CRD071K24L (YAGEO) matches the original part's electrical specifications exactly (1.24 kΩ, ±0.25%, ±25ppm/°C). This part is active and ROHS3 compliant. However, it does not carry AEC-Q200 automotive qualification. Selection of this part is appropriate for non-automotive applications or where automotive certification is not required.

ERA-6AEB1241V (Panasonic Electronic Components) provides ±0.1% tolerance with AEC-Q200 qualification and active product status. This part is suitable for applications requiring automotive-grade reliability with improved tolerance performance.

Selection Criteria:

For direct replacement in automotive applications requiring AEC-Q200 certification, select from the Susumu RG2012 series or Panasonic ERA-6AEB1241V. For applications with tighter tolerance requirements, select RG2012V series variants. For non-automotive applications, RT0805CRD071K24L provides cost-effective equivalence.

Frequently Asked Questions (FAQ)

Q: Can RG2012P-1241-B-T5 be used as a direct replacement for RG2012P-1241-C-T5?

A: Yes. Both parts share identical resistance (1.24 kΩ), power rating (0.125W), package (0805), operating temperature range (-55°C to 155°C), and AEC-Q200 qualification. RG2012P-1241-B-T5 offers improved tolerance (±0.1% versus ±0.25%) and is an active product. The primary difference is packaging format (Tape & Reel versus cut tape).

Q: What is the difference between RG2012P and RG2012V series parts?

A: Both series are thin film 0805 resistors with identical resistance and power ratings. The primary difference is temperature coefficient: RG2012P series has ±25ppm/°C, while RG2012V series has ±5ppm/°C. RG2012V series provides superior temperature stability and is suitable for precision applications. Both maintain AEC-Q200 qualification.

Q: Is RT0805CRD071K24L suitable for automotive applications?

A: RT0805CRD071K24L matches the electrical specifications of the original part but does not carry AEC-Q200 automotive qualification. It is suitable for non-automotive applications. For automotive applications, select from Susumu RG2012 series or Panasonic ERA-6AEB1241V.

Q: Does tolerance improvement affect circuit performance?

A: Tighter tolerance specifications (±0.1%, ±0.05%, ±0.02%) represent improved accuracy compared to ±0.25%. In circuits where resistance value precision is critical, these upgrades enhance performance. In applications where the original ±0.25% tolerance is sufficient, tighter tolerance parts provide backward compatibility without circuit modification.

Q: Are all substitute parts ROHS3 compliant?

A: All substitute parts listed are ROHS3 compliant. All parts maintain MSL 1 (Unlimited) moisture sensitivity level, indicating no special storage or handling requirements.

Q: What is the significance of packaging format differences?

A: The original RG2012P-1241-C-T5 is supplied in cut tape format. Substitute parts are supplied in Tape & Reel (TR) format, which is standard for automated assembly and production environments. Electrical performance is identical; packaging format affects only handling and assembly processes.

Q: Can RG2012V-1241-P-T1 be used in place of RG2012P-1241-C-T5?

A: Yes. RG2012V-1241-P-T1 is electrically compatible with superior specifications: ±0.02% tolerance (versus ±0.25%), ±5ppm/°C temperature coefficient (versus ±25ppm/°C), and active product status. All other parameters (resistance, power rating, package, operating temperature, AEC-Q200 qualification) are identical or equivalent.

Q: What inventory status should influence part selection?

A: All substitute parts listed are active products with confirmed inventory availability. The original RG2012P-1241-C-T5 is obsolete. For new designs and production, select from active substitute parts to ensure long-term supply continuity.

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