RG2012N-512-C-T5 Equivalent & Substitute Parts

Part Overview

The RG2012N-512-C-T5 is a 5.1 kOhms ±0.25% thin film chip resistor in 0805 (2012 Metric) package rated for 0.125W (1/8W) power dissipation. This component is manufactured by Susumu and features anti-sulfur coating with automotive AEC-Q200 qualification. The part is currently obsolete, necessitating identification of equivalent and substitute components that maintain electrical and mechanical compatibility while offering active product status and improved performance characteristics.

Key Parameters

Parameter	Value
Resistance	5.1 kOhms
Tolerance	±0.25%
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-512-C-T5 is determined by the following mandatory parameters:

Electrical Parameters:

Resistance value: 5.1 kOhms (exact match required)
Power rating: 0.125W minimum (1/8W)
Composition: Thin film technology
Operating temperature range: -55°C ~ 155°C minimum
Automotive qualification: AEC-Q200 required

Mechanical Parameters:

Package: 0805 (2012 Metric) form factor
Termination count: 2 terminations
Moisture sensitivity: MSL 1 or better

Compliance Parameters:

RoHS3 compliance
REACH unaffected status

Substitute parts are grouped into two categories:

Category 1: Susumu RG Series (Same Manufacturer) Parts RG2012N-512-B-T5, RG2012N-512-W-T1, RG2012N-512-W-T5, RG2012V-512-B-T5, RG2012V-512-P-T1, RG2012V-512-W-T1, and RG2012V-512-W-T5 maintain the same resistance, package, and power rating while offering improved tolerance specifications (±0.1%, ±0.05%, or ±0.02%) and active product status. The "V" series variants feature reduced temperature coefficient (±5ppm/°C versus ±10ppm/°C).

Category 2: Cross-Manufacturer Alternatives Parts ERA-6ARB512V and ERA-6ARW512V (Panasonic) and RT0805WRB075K1L (YAGEO) provide equivalent electrical and mechanical specifications with active product status and AEC-Q200 qualification.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Temp Coeff (ppm/°C)	Package	Status	AEC-Q200
RG2012N-512-C-T5	Susumu	5.1 kΩ	±0.25%	0.125	±10	0805	Obsolete	Yes
RG2012N-512-B-T5	Susumu	5.1 kΩ	±0.1%	0.125	±10	0805	Active	Yes
RG2012N-512-W-T1	Susumu	5.1 kΩ	±0.05%	0.125	±10	0805	Active	Yes
RG2012N-512-W-T5	Susumu	5.1 kΩ	±0.05%	0.125	±10	0805	Active	Yes
RG2012V-512-B-T5	Susumu	5.1 kΩ	±0.1%	0.125	±5	0805	Active	Yes
RG2012V-512-P-T1	Susumu	5.1 kΩ	±0.02%	0.125	±5	0805	Active	Yes
RG2012V-512-W-T1	Susumu	5.1 kΩ	±0.05%	0.125	±5	0805	Active	Yes
RG2012V-512-W-T5	Susumu	5.1 kΩ	±0.05%	0.125	±5	0805	Active	Yes
ERA-6ARB512V	Panasonic	5.1 kΩ	±0.1%	0.125	±10	0805	Active	Yes
ERA-6ARW512V	Panasonic	5.1 kΩ	±0.05%	0.125	±10	0805	Active	Yes
RT0805WRB075K1L	YAGEO	5.1 kΩ	±0.05%	0.125	±10	0805	Active	No

Engineering Selection Recommendations

Primary Substitutes (Susumu RG Series)

The RG2012N-512-B-T5 and RG2012N-512-W-T1 are direct upgrades from the same manufacturer. Both maintain identical mechanical compatibility and AEC-Q200 automotive qualification while offering improved tolerance specifications (±0.1% and ±0.05% respectively) and active product status. These parts are recommended for applications requiring continuity with the original design lineage.

The RG2012V series variants (RG2012V-512-B-T5, RG2012V-512-W-T1, RG2012V-512-W-T5) provide enhanced performance through reduced temperature coefficient (±5ppm/°C) while maintaining AEC-Q200 compliance and active status. The RG2012V-512-P-T1 offers the tightest tolerance specification (±0.02%) for precision applications.

Secondary Substitutes (Cross-Manufacturer)

The ERA-6ARB512V (Panasonic, ±0.1% tolerance) and ERA-6ARW512V (Panasonic, ±0.05% tolerance) provide equivalent electrical performance with AEC-Q200 qualification and active product status. These components are suitable for applications where manufacturer diversification is acceptable.

The RT0805WRB075K1L (YAGEO, ±0.05% tolerance) offers electrical equivalence and active status but lacks explicit AEC-Q200 automotive qualification. This part is suitable for non-automotive applications or where automotive qualification is not a design requirement.

Selection Criteria

For automotive applications requiring AEC-Q200 compliance, select from Susumu RG series or Panasonic ERA-6A series. For applications requiring the lowest temperature coefficient, select from the Susumu RG2012V series. For applications requiring the tightest tolerance, select RG2012V-512-P-T1 (±0.02%).

Frequently Asked Questions (FAQ)

Q: Can RG2012N-512-B-T5 be used as a direct replacement for RG2012N-512-C-T5?

A: Yes. Both parts share identical resistance (5.1 kOhms), power rating (0.125W), package (0805), operating temperature range (-55°C ~ 155°C), and AEC-Q200 qualification. The RG2012N-512-B-T5 offers improved tolerance (±0.1% versus ±0.25%) and active product status.

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

A: The primary difference is temperature coefficient. RG2012N series has ±10ppm/°C while RG2012V series has ±5ppm/°C. Both series maintain identical resistance, power rating, package, and AEC-Q200 qualification. The RG2012V series is suitable for applications requiring superior temperature stability.

Q: Are Panasonic ERA-6A parts compatible with Susumu RG parts?

A: Yes, for applications where manufacturer substitution is acceptable. Both ERA-6ARB512V and ERA-6ARW512V maintain identical resistance (5.1 kOhms), power rating (0.125W), package (0805), operating temperature range, and AEC-Q200 qualification. Physical dimensions differ slightly (height: 0.024" versus 0.020" maximum seated height).

Q: Does YAGEO RT0805WRB075K1L have automotive qualification?

A: The RT0805WRB075K1L does not carry explicit AEC-Q200 qualification. This part is suitable for non-automotive applications or applications where automotive qualification is not required. For automotive applications, select from Susumu RG series or Panasonic ERA-6A series.

Q: What tolerance specification should I select?

A: Selection depends on circuit requirements. The original RG2012N-512-C-T5 specifies ±0.25%. For improved accuracy, RG2012N-512-B-T5 offers ±0.1%, RG2012N-512-W-T1 and RG2012N-512-W-T5 offer ±0.05%, and RG2012V-512-P-T1 offers ±0.02%. Tighter tolerances are necessary only when circuit design requires reduced resistance variation.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts are RoHS3 compliant and REACH unaffected, matching the compliance status of the original RG2012N-512-C-T5.

Q: Can I use these parts interchangeably on the same PCB?

A: Yes, for PCB layout purposes. All substitute parts use identical 0805 (2012 Metric) package with 2 terminations. Physical dimensions are compatible with standard 0805 footprints. Verify maximum seated height specifications if PCB clearance is constrained (range: 0.020" to 0.024" maximum).

Q: Which substitute offers the best long-term availability?

A: Panasonic ERA-6ARW512V and ERA-6ARB512V show highest inventory levels (8,884 and 11,848 units respectively) among active parts. Susumu RG2012N-512-W-T1 also shows strong inventory (5,316 units). These parts are recommended for applications requiring long-term supply security.

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