RG1005P-4120-B-T1 Equivalent & Substitute Parts

Part Overview

The RG1005P-4120-B-T1 is a 412 Ohm ±0.1% thin film chip resistor in 0402 (1005 Metric) package rated for 0.063W (1/16W) power dissipation. This component features anti-sulfur coating and automotive AEC-Q200 qualification, designed for high-precision applications requiring stable resistance values across the operating temperature range of -55°C to 155°C.

The RG1005P-4120-B-T1 is classified as obsolete. Direct equivalent and upgraded substitute parts are available from Susumu and alternative manufacturers. Substitutes maintain the same resistance value, package format, and core electrical specifications while offering improved performance characteristics or active product status.

Key Parameters

Parameter	Value
Resistance	412 Ohms
Tolerance	±0.1%
Power Rating	0.063W (1/16W)
Package / Case	0402 (1005 Metric)
Composition	Thin Film
Temperature Coefficient	±25ppm/°C
Operating Temperature Range	-55°C ~ 155°C
Features	Anti-Sulfur, Automotive AEC-Q200
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the RG1005P-4120-B-T1 is determined by the following parameters:

Critical Parameters (Must Match):

Resistance value: 412 Ohms
Package / Case: 0402 (1005 Metric)
Power rating: 0.063W (1/16W)
Composition: Thin Film
Operating temperature range: -55°C ~ 155°C minimum

Compatible Variation Parameters (May Differ):

Tolerance: ±0.1% or tighter (±0.05%, ±0.02%)
Temperature coefficient: ±25ppm/°C or lower (±10ppm/°C, ±5ppm/°C)
Packaging format: Bulk or Tape & Reel (TR)
Manufacturer: Susumu, TE Connectivity, Panasonic, Vishay Beyschlag

Substitute parts are grouped into two categories:

Direct Substitutes: Parts with identical tolerance (±0.1%) and temperature coefficient (±25ppm/°C) specifications. These provide one-to-one replacement capability.

Upgraded Substitutes: Parts with improved tolerance (±0.05%, ±0.02%) or lower temperature coefficient (±10ppm/°C, ±5ppm/°C). These offer enhanced precision and stability while maintaining full electrical and mechanical compatibility.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Temp Coeff (ppm/°C)	Package	Operating Temp (°C)	Features	Product Status
RG1005P-4120-B-T1	Susumu	412 Ω	±0.1%	0.063	±25	0402	-55 ~ 155	Anti-Sulfur, AEC-Q200	Obsolete
RG1005P-4120-B-T5	Susumu	412 Ω	±0.1%	0.063	±25	0402	-55 ~ 155	Anti-Sulfur, AEC-Q200	Active
RG1005N-4120-B-T5	Susumu	412 Ω	±0.1%	0.063	±10	0402	-55 ~ 155	Anti-Sulfur, AEC-Q200	Active
RG1005N-4120-W-T1	Susumu	412 Ω	±0.05%	0.063	±10	0402	-55 ~ 155	Anti-Sulfur, AEC-Q200	Active
RG1005P-4120-W-T5	Susumu	412 Ω	±0.05%	0.063	±25	0402	-55 ~ 155	Anti-Sulfur, AEC-Q200	Active
RG1005V-4120-B-T5	Susumu	412 Ω	±0.1%	0.063	±5	0402	-55 ~ 155	Anti-Sulfur, AEC-Q200	Active
RG1005V-4120-P-T1	Susumu	412 Ω	±0.02%	0.063	±5	0402	-55 ~ 155	Anti-Sulfur, AEC-Q200	Active
RG1005V-4120-W-T1	Susumu	412 Ω	±0.05%	0.063	±5	0402	-55 ~ 155	Anti-Sulfur, AEC-Q200	Active
CPF0402B412RE1	TE Connectivity	412 Ω	±0.1%	0.063	±25	0402	-55 ~ 155	Thin Film	Active
ERA-2AEB4120X	Panasonic	412 Ω	±0.1%	0.063	±25	0402	-55 ~ 155	AEC-Q200	Active
MCS04020D4120BE100	Vishay Beyschlag	412 Ω	±0.1%	0.063	±25	0402	-55 ~ 125	Anti-Sulfur	Active

Engineering Selection Recommendations

Direct Replacement (Identical Specifications):

RG1005P-4120-B-T5 is the primary direct substitute. This part maintains identical electrical specifications (412 Ω ±0.1%, ±25ppm/°C) and mechanical compatibility while offering active product status. The only difference is packaging format (Tape & Reel vs. bulk), which does not affect electrical performance. This part is recommended for immediate replacement in production environments.

CPF0402B412RE1 (TE Connectivity) and ERA-2AEB4120X (Panasonic) provide alternative direct substitutes with identical tolerance and temperature coefficient specifications. ERA-2AEB4120X carries automotive AEC-Q200 qualification matching the original part. Both are actively manufactured and widely available.

Enhanced Performance Substitutes:

RG1005V-4120-B-T5 offers improved temperature stability (±5ppm/°C vs. ±25ppm/°C) while maintaining ±0.1% tolerance. This upgrade is suitable for applications requiring enhanced thermal performance.

RG1005V-4120-P-T1 provides the highest precision option with ±0.02% tolerance and ±5ppm/°C temperature coefficient. This part is appropriate for precision measurement and calibration circuits.

RG1005N-4120-W-T1 and RG1005V-4120-W-T1 offer ±0.05% tolerance with improved temperature coefficients (±10ppm/°C and ±5ppm/°C respectively), suitable for applications requiring tighter tolerance control.

Cross-Manufacturer Alternatives:

MCS04020D4120BE100 (Vishay Beyschlag) is functionally equivalent but specifies a reduced operating temperature maximum of 125°C versus 155°C. This part is suitable only for applications not requiring the full -55°C to 155°C range.

All recommended substitutes maintain ROHS3 compliance, MSL 1 rating, and 0402 package format. Selection should be based on specific application requirements for tolerance, temperature coefficient, and operating temperature range.

Frequently Asked Questions (FAQ)

Q: Can RG1005P-4120-B-T5 directly replace RG1005P-4120-B-T1?

A: Yes. RG1005P-4120-B-T5 is a direct substitute with identical electrical specifications (412 Ω ±0.1%, ±25ppm/°C, 0.063W). The difference is packaging format (Tape & Reel vs. bulk), which does not affect circuit performance. Both parts are 0402 package with identical dimensions and termination count.

Q: What is the difference between Susumu RG series variants (P, N, V)?

A: The letter designation indicates temperature coefficient performance. RG1005P series specifies ±25ppm/°C, RG1005N series specifies ±10ppm/°C, and RG1005V series specifies ±5ppm/°C. All maintain the same 412 Ω resistance and 0402 package format. Selection depends on thermal stability requirements.

Q: Can I use RG1005V-4120-P-T1 (±0.02% tolerance) in place of RG1005P-4120-B-T1 (±0.1% tolerance)?

A: Yes. RG1005V-4120-P-T1 is a compatible upgrade with tighter tolerance (±0.02% vs. ±0.1%) and superior temperature coefficient (±5ppm/°C vs. ±25ppm/°C). The part maintains identical resistance value, power rating, package format, and operating temperature range. This substitution improves circuit precision.

Q: Is MCS04020D4120BE100 suitable for all applications using RG1005P-4120-B-T1?

A: MCS04020D4120BE100 is functionally equivalent for most applications but has a reduced maximum operating temperature of 125°C compared to 155°C for the original part. Use this substitute only in applications where the operating temperature does not exceed 125°C.

Q: What is the significance of the "T1" and "T5" suffixes in Susumu part numbers?

A: The suffix indicates packaging format. T1 denotes bulk packaging, while T5 denotes Tape & Reel (TR) packaging. Both formats contain identical components with no electrical differences. Selection is based on manufacturing process requirements and inventory management.

Q: Are all substitute parts AEC-Q200 qualified?

A: Not all. Susumu RG series parts and Panasonic ERA-2AEB4120X carry AEC-Q200 qualification. TE Connectivity CPF0402B412RE1 and Vishay Beyschlag MCS04020D4120BE100 do not list AEC-Q200 certification. For automotive applications requiring AEC-Q200 compliance, use Susumu or Panasonic alternatives.

Q: Can I mix different manufacturers' parts in the same circuit board?

A: Yes. All listed substitutes maintain identical electrical specifications (412 Ω ±0.1%, 0.063W, 0402 package) and mechanical compatibility. Cross-manufacturer substitution is electrically valid. However, verify compliance requirements (AEC-Q200, RoHS, REACH) match your application specifications before mixing manufacturers in production.

Q: What is the height difference between substitute parts?

A: Seated height varies slightly: RG1005P-4120-B-T1 and ERA-2AEB4120X specify 0.016" (0.40mm), CPF0402B412RE1 specifies 0.014" (0.35mm), and MCS04020D4120BE100 specifies 0.015" (0.37mm). These variations are within standard 0402 package tolerances and do not affect PCB assembly or circuit performance.

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