RG1005P-2431-B-T1 Equivalent & Substitute Parts

Part Overview

The RG1005P-2431-B-T1 is a 2.43 kOhms ±0.1% thin film chip resistor in 0402 (1005 Metric) package rated for 0.063W (1/16W) power dissipation. This component is manufactured by Susumu and features anti-sulfur coating with automotive AEC-Q200 qualification. The part is currently listed as obsolete, necessitating identification of equivalent and substitute components that maintain electrical and mechanical compatibility for ongoing production and repair applications.

Key Parameters

Parameter	Value
Resistance	2.43 kOhms
Tolerance	±0.1%
Power Rating	0.063W (1/16W)
Package	0402 (1005 Metric)
Composition	Thin Film
Operating Temperature Range	-55°C ~ 155°C
Temperature Coefficient	±25ppm/°C
Features	Anti-Sulfur, Automotive AEC-Q200
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the RG1005P-2431-B-T1 is determined by the following critical parameters:

Electrical Parameters:

Resistance value: 2.43 kOhms (exact match required)
Tolerance: ±0.1% or tighter (±0.05%, ±0.02% are acceptable upgrades)
Power rating: 0.063W minimum
Temperature coefficient: ±25ppm/°C or lower (±10ppm/°C, ±5ppm/°C are acceptable upgrades)
Operating temperature range: -55°C ~ 155°C minimum

Mechanical Parameters:

Package: 0402 (1005 Metric) only
Composition: Thin film
Terminations: 2

Compliance Parameters:

RoHS3 Compliant
Moisture Sensitivity Level: 1 (Unlimited)
AEC-Q200 qualification (where applicable)

Substitute parts are classified as either direct equivalents (matching all parameters) or upgrades (improved tolerance, temperature coefficient, or packaging format while maintaining backward compatibility).

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Temp Coeff (ppm/°C)	Temp Range (°C)	Package	Status	AEC-Q200
RG1005P-2431-B-T1	Susumu	2.43 kΩ	±0.1%	0.063	±25	-55 ~ 155	0402	Obsolete	Yes
RG1005P-2431-B-T5	Susumu	2.43 kΩ	±0.1%	0.063	±25	-55 ~ 155	0402	Active	Yes
RG1005N-2431-B-T5	Susumu	2.43 kΩ	±0.1%	0.063	±10	-55 ~ 155	0402	Active	Yes
RG1005N-2431-W-T1	Susumu	2.43 kΩ	±0.05%	0.063	±10	-55 ~ 155	0402	Active	Yes
RG1005P-2431-W-T5	Susumu	2.43 kΩ	±0.05%	0.063	±25	-55 ~ 155	0402	Active	Yes
RG1005V-2431-B-T5	Susumu	2.43 kΩ	±0.1%	0.063	±5	-55 ~ 155	0402	Active	Yes
RG1005V-2431-P-T1	Susumu	2.43 kΩ	±0.02%	0.063	±5	-55 ~ 155	0402	Active	Yes
RG1005V-2431-W-T1	Susumu	2.43 kΩ	±0.05%	0.063	±5	-55 ~ 155	0402	Active	Yes
CPF0402B2K43E1	TE Connectivity	2.43 kΩ	±0.1%	0.063	±25	-55 ~ 155	0402	Active	No
ERA-2AEB2431X	Panasonic	2.43 kΩ	±0.1%	0.063	±25	-55 ~ 155	0402	Active	Yes
MCS04020D2431BE100	Vishay	2.43 kΩ	±0.1%	0.063	±25	-55 ~ 125	0402	Active	No

Engineering Selection Recommendations

Direct Equivalent (Same Packaging Format):

RG1005P-2431-B-T5 is the direct equivalent to RG1005P-2431-B-T1. Both parts are manufactured by Susumu with identical electrical specifications (2.43 kΩ, ±0.1%, ±25ppm/°C). The primary difference is packaging format: RG1005P-2431-B-T5 is supplied in Tape & Reel (TR) format while the original part uses bulk packaging. RG1005P-2431-B-T5 maintains active product status and full AEC-Q200 automotive qualification.

Susumu Upgrades (Enhanced Performance):

Susumu offers multiple upgrade options within the RG series that maintain full backward compatibility while providing improved specifications:

RG1005N-2431-B-T5: Reduces temperature coefficient to ±10ppm/°C while maintaining ±0.1% tolerance and AEC-Q200 rating
RG1005V-2431-B-T5: Further reduces temperature coefficient to ±5ppm/°C with ±0.1% tolerance and AEC-Q200 rating
RG1005V-2431-P-T1: Provides tightest tolerance at ±0.02% with ±5ppm/°C temperature coefficient and AEC-Q200 rating
RG1005V-2431-W-T1: Offers ±0.05% tolerance with ±5ppm/°C temperature coefficient and AEC-Q200 rating

All Susumu alternatives maintain the 0402 package, 0.063W power rating, -55°C ~ 155°C operating range, and ROHS3 compliance.

Cross-Manufacturer Alternatives:

ERA-2AEB2431X (Panasonic) provides electrical equivalence with identical specifications (2.43 kΩ, ±0.1%, ±25ppm/°C, AEC-Q200) in 0402 package. This part is suitable for applications requiring multi-source qualification.

CPF0402B2K43E1 (TE Connectivity) matches electrical specifications but lacks AEC-Q200 automotive qualification. This part is suitable for non-automotive applications.

MCS04020D2431BE100 (Vishay) provides electrical equivalence but operates to 125°C maximum (versus 155°C for the original part) and lacks AEC-Q200 qualification. This part is suitable for applications with reduced temperature requirements and non-automotive use.

Frequently Asked Questions (FAQ)

Q: Can RG1005P-2431-B-T5 be used as a direct replacement for RG1005P-2431-B-T1?

A: Yes. Both parts are manufactured by Susumu with identical electrical specifications (2.43 kΩ, ±0.1%, 0.063W, ±25ppm/°C, -55°C ~ 155°C). The only difference is packaging format (Tape & Reel versus bulk). The part is mechanically and electrically interchangeable.

Q: What is the difference between the Susumu RG series variants?

A: The RG series variants differ in temperature coefficient and tolerance specifications. RG1005P series has ±25ppm/°C temperature coefficient. RG1005N series reduces this to ±10ppm/°C. RG1005V series further reduces it to ±5ppm/°C. Tolerance options range from ±0.1% to ±0.02%. All variants maintain the same 2.43 kΩ resistance, 0.063W power rating, 0402 package, and AEC-Q200 qualification.

Q: Is the Panasonic ERA-2AEB2431X suitable for automotive applications?

A: Yes. The ERA-2AEB2431X carries AEC-Q200 automotive qualification and matches all electrical specifications of the original part (2.43 kΩ, ±0.1%, 0.063W, ±25ppm/°C, -55°C ~ 155°C). It is suitable for automotive applications requiring multi-source component qualification.

Q: Why does MCS04020D2431BE100 have a lower maximum operating temperature?

A: The MCS04020D2431BE100 is specified for -55°C ~ 125°C operation, compared to -55°C ~ 155°C for the original part. This represents a design difference in the Vishay component. Applications requiring operation above 125°C must use alternative parts.

Q: Can I use CPF0402B2K43E1 in automotive applications?

A: The CPF0402B2K43E1 lacks AEC-Q200 automotive qualification. It is suitable for industrial and consumer applications but not recommended for automotive use where AEC-Q200 certification is required.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant and carry Moisture Sensitivity Level 1 (Unlimited), matching the environmental compliance of the original RG1005P-2431-B-T1.

Q: What is the significance of the temperature coefficient specification?

A: Temperature coefficient (ppm/°C) indicates how much the resistance value changes with temperature. Lower values indicate greater stability. The original part has ±25ppm/°C. Upgrades offer ±10ppm/°C or ±5ppm/°C for applications requiring tighter resistance stability across the operating temperature range.

Q: Can I substitute a part with tighter tolerance than the original?

A: Yes. Parts with tighter tolerance (±0.05%, ±0.02%) are acceptable substitutes for applications originally specified with ±0.1% tolerance. The tighter tolerance provides equal or better performance.

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