RG2012N-2940-B-T1 Equivalent & Substitute Parts

Part Overview

The RG2012N-2940-B-T1 is a 294 Ohms ±0.1% thin film chip resistor in 0805 (2012 Metric) package rated for 0.125W (1/8W) power dissipation. This component features anti-sulfur coating and automotive AEC-Q200 qualification, suitable for high-reliability applications requiring precision resistance values in compact form factors.

The RG2012N-2940-B-T1 is classified as obsolete. Equivalent and substitute parts are available from the same manufacturer series and alternative suppliers to maintain design continuity and ensure component availability for production and repair applications.

Key Parameters

Parameter	Value
Resistance	294 Ohms
Tolerance	±0.1%
Power Rating	0.125W (1/8W)
Package / Case	0805 (2012 Metric)
Composition	Thin Film
Temperature Coefficient	±10ppm/°C
Operating Temperature Range	-55°C ~ 155°C
Automotive Rating	AEC-Q200
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the RG2012N-2940-B-T1 is determined by the following critical parameters:

Mandatory Matching Parameters:

Resistance value: 294 Ohms
Package / Case: 0805 (2012 Metric)
Power rating: 0.125W (1/8W)
Automotive AEC-Q200 qualification
Operating temperature range: -55°C ~ 155°C
RoHS3 compliance

Variable Parameters Allowing Substitution:

Tolerance: ±0.1% (main part) to ±0.02% (upgraded alternatives)
Temperature coefficient: ±10ppm/°C (main part) to ±5ppm/°C (upgraded alternatives)
Packaging format: Bulk to Tape & Reel (TR)
Manufacturer: Susumu or Panasonic Electronic Components

Substitute parts are grouped into two categories:

Direct Substitutes (Packaging Format Change): Parts with identical electrical specifications but different packaging (Tape & Reel instead of bulk).

Upgraded Substitutes (Enhanced Specifications): Parts with tighter tolerance and/or lower temperature coefficient, maintaining or exceeding all other electrical and mechanical requirements.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Temp Coeff (ppm/°C)	Package	Packaging Format	Product Status	Height Max (mm)
RG2012N-2940-B-T1	Susumu	294 Ω	±0.1%	0.125	±10	0805	Bulk	Obsolete	0.50
RG2012N-2940-B-T5	Susumu	294 Ω	±0.1%	0.125	±10	0805	Tape & Reel	Active	0.50
RG2012N-2940-W-T1	Susumu	294 Ω	±0.05%	0.125	±10	0805	Tape & Reel	Active	0.50
RG2012N-2940-W-T5	Susumu	294 Ω	±0.05%	0.125	±10	0805	Tape & Reel	Active	0.50
RG2012V-2940-B-T5	Susumu	294 Ω	±0.1%	0.125	±5	0805	Tape & Reel	Active	0.50
RG2012V-2940-P-T1	Susumu	294 Ω	±0.02%	0.125	±5	0805	Tape & Reel	Active	0.50
RG2012V-2940-W-T1	Susumu	294 Ω	±0.05%	0.125	±5	0805	Tape & Reel	Active	0.50
RG2012V-2940-W-T5	Susumu	294 Ω	±0.05%	0.125	±5	0805	Tape & Reel	Active	0.50
ERA-6AEB2940V	Panasonic Electronic Components	294 Ω	±0.1%	0.125	±25	0805	Tape & Reel	Active	0.60

Engineering Selection Recommendations

For Direct Replacement (Identical Electrical Performance):

RG2012N-2940-B-T5 provides direct electrical equivalence to the obsolete RG2012N-2940-B-T1, with identical tolerance (±0.1%) and temperature coefficient (±10ppm/°C). The primary difference is packaging format (Tape & Reel instead of bulk), which is standard for active production components. This part is recommended for applications where the original specifications are required and packaging format change is acceptable.

For Enhanced Precision Applications:

RG2012N-2940-W-T1 and RG2012N-2940-W-T5 offer tighter tolerance (±0.05%) while maintaining the same temperature coefficient (±10ppm/°C). These parts are suitable for applications requiring improved resistance accuracy without thermal performance changes.

RG2012V-series parts (RG2012V-2940-B-T5, RG2012V-2940-W-T1, RG2012V-2940-W-T5, RG2012V-2940-P-T1) provide enhanced temperature stability with ±5ppm/°C coefficient. RG2012V-2940-P-T1 offers the highest precision at ±0.02% tolerance, suitable for precision measurement and calibration circuits.

For Cross-Manufacturer Substitution:

ERA-6AEB2940V from Panasonic Electronic Components provides functional equivalence with identical resistance, tolerance, power rating, and AEC-Q200 qualification. The temperature coefficient is ±25ppm/°C (less stable than Susumu alternatives) and maximum seated height is 0.60mm (compared to 0.50mm for Susumu parts). This part is suitable for applications where manufacturer flexibility is required and thermal performance is not critical.

All substitute parts maintain AEC-Q200 automotive qualification, RoHS3 compliance, and unlimited moisture sensitivity rating (MSL 1).

Frequently Asked Questions (FAQ)

Q: Can RG2012N-2940-B-T5 be used as a direct replacement for RG2012N-2940-B-T1?

A: Yes. Both parts have identical electrical specifications: 294 Ohms ±0.1% tolerance, 0.125W power rating, ±10ppm/°C temperature coefficient, and 0805 package. The difference is packaging format (Tape & Reel versus bulk). RG2012N-2940-B-T5 is the active production equivalent.

Q: What is the difference between Susumu RG2012N and RG2012V series?

A: The RG2012V series has a lower temperature coefficient (±5ppm/°C) compared to RG2012N (±10ppm/°C), providing better thermal stability. Both series maintain identical resistance values, power ratings, and package dimensions. RG2012V is suitable for applications requiring improved temperature performance.

Q: Can I use RG2012V-2940-P-T1 instead of RG2012N-2940-B-T1?

A: Yes. RG2012V-2940-P-T1 meets all mandatory parameters: 294 Ohms resistance, 0805 package, 0.125W power rating, AEC-Q200 qualification, and -55°C to 155°C operating range. It provides enhanced specifications with ±0.02% tolerance and ±5ppm/°C temperature coefficient, making it suitable for precision applications.

Q: What is the impact of tolerance differences on circuit performance?

A: Tolerance determines the maximum deviation from the nominal 294 Ohm value. ±0.1% tolerance allows ±0.294 Ohm deviation; ±0.05% allows ±0.147 Ohm deviation; ±0.02% allows ±0.059 Ohm deviation. Tighter tolerance parts are required for precision analog circuits, measurement systems, and calibration applications.

Q: Are all substitute parts automotive-qualified?

A: Yes. All listed substitute parts carry AEC-Q200 automotive qualification, meeting automotive reliability and environmental stress testing requirements. This qualification is maintained across all tolerance and temperature coefficient variants.

Q: What is the difference between Tape & Reel and bulk packaging?

A: Tape & Reel (TR) packaging is standard for automated assembly and high-volume production, with components wound on carrier tape in reels. Bulk packaging is used for manual assembly or small-quantity applications. Electrically and mechanically, the components are identical; only the delivery format differs.

Q: Can ERA-6AEB2940V from Panasonic replace the Susumu part?

A: Yes, for most applications. ERA-6AEB2940V provides identical resistance, tolerance, power rating, and AEC-Q200 qualification. However, it has a higher temperature coefficient (±25ppm/°C versus ±10ppm/°C) and slightly greater maximum height (0.60mm versus 0.50mm). It is suitable for applications where manufacturer flexibility is acceptable and thermal performance is not critical.

Q: What does MSL 1 (Unlimited) moisture sensitivity mean?

A: MSL 1 indicates the component has unlimited shelf life and requires no special moisture control during storage or handling. This is the least restrictive moisture sensitivity level and simplifies inventory management and logistics.

Q: Are all parts RoHS3 compliant?

A: Yes. All listed parts are ROHS3 compliant, meeting European Union Restriction of Hazardous Substances regulations. This compliance is maintained across all manufacturers and variants.

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