RG2012P-2430-B-T1 Equivalent & Substitute Parts

Part Overview

The RG2012P-2430-B-T1 is a 243 Ohm ±0.1% 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 part is currently listed as obsolete, necessitating identification of active equivalent and substitute components that maintain electrical and mechanical compatibility while meeting automotive and industrial standards.

Key Parameters

Parameter	Value
Resistance	243 Ohms
Tolerance	±0.1%
Power Rating	0.125W (1/8W)
Package / Case	0805 (2012 Metric)
Composition	Thin Film
Temperature Coefficient	±25ppm/°C
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-2430-B-T1 is determined by the following critical parameters:

Electrical Parameters:

Resistance value: 243 Ohms (exact match required)
Tolerance: ±0.1% or tighter (lower tolerance values are acceptable upgrades)
Power rating: 0.125W minimum (higher power ratings are acceptable)
Temperature coefficient: ±25ppm/°C or better (lower values represent improved stability)

Mechanical Parameters:

Package: 0805 (2012 Metric) form factor (mandatory for PCB compatibility)
Physical dimensions: 0.079" L × 0.049" W (2.00mm × 1.25mm)
Height seated maximum: 0.020" to 0.026" (0.50mm to 0.65mm)

Compliance & Certification:

Automotive AEC-Q200 qualification (required for automotive applications)
RoHS3 compliance (environmental standard)
Thin film composition (precision resistor technology)

Substitute parts are classified as direct equivalents when all electrical and mechanical parameters match the main part. Upgrade substitutes offer improved performance through tighter tolerance, lower temperature coefficient, or higher power rating while maintaining full compatibility.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Temp Coeff (ppm/°C)	Package	AEC-Q200	Status
RG2012P-2430-B-T1	Susumu	243 Ω	±0.1%	0.125	±25	0805	Yes	Obsolete
RG2012P-2430-B-T5	Susumu	243 Ω	±0.1%	0.125	±25	0805	Yes	Active
RG2012N-2430-B-T5	Susumu	243 Ω	±0.1%	0.125	±10	0805	Yes	Active
RG2012N-2430-W-T1	Susumu	243 Ω	±0.05%	0.125	±10	0805	Yes	Active
RG2012P-2430-W-T5	Susumu	243 Ω	±0.05%	0.125	±25	0805	Yes	Active
RG2012V-2430-B-T5	Susumu	243 Ω	±0.1%	0.125	±5	0805	Yes	Active
RG2012V-2430-P-T1	Susumu	243 Ω	±0.02%	0.125	±5	0805	Yes	Active
RG2012V-2430-W-T1	Susumu	243 Ω	±0.05%	0.125	±5	0805	Yes	Active
RG2012V-2430-W-T5	Susumu	243 Ω	±0.05%	0.125	±5	0805	Yes	Active
6-2176091-0	TE Connectivity	243 Ω	±0.1%	0.25	±25	0805	No	Active
ERA-6AEB2430V	Panasonic	243 Ω	±0.1%	0.125	±25	0805	Yes	Active

Engineering Selection Recommendations

Direct Equivalent (Same Electrical & Mechanical Specifications):

RG2012P-2430-B-T5 (Susumu) is the direct equivalent replacement for the obsolete RG2012P-2430-B-T1. Both components share identical electrical parameters (243 Ω, ±0.1%, 0.125W, ±25ppm/°C) and mechanical specifications (0805 package). The primary difference is packaging format (Tape & Reel vs. bulk), and RG2012P-2430-B-T5 maintains active product status with AEC-Q200 automotive qualification and ROHS3 compliance.

ERA-6AEB2430V (Panasonic) provides an alternative direct equivalent from a different manufacturer. This component matches all critical electrical parameters and maintains AEC-Q200 qualification with ROHS3 compliance. Panasonic's ERA-6A series offers high inventory availability (15,098 units in stock).

Upgrade Substitutes (Improved Performance):

Susumu RG2012 series upgrades offer enhanced performance characteristics while maintaining full compatibility:

RG2012N-2430-B-T5: Improves temperature coefficient to ±10ppm/°C (from ±25ppm/°C)
RG2012N-2430-W-T1: Tightens tolerance to ±0.05% with ±10ppm/°C temperature coefficient
RG2012V-2430-B-T5: Achieves ±5ppm/°C temperature coefficient at ±0.1% tolerance
RG2012V-2430-P-T1: Highest precision at ±0.02% tolerance with ±5ppm/°C temperature coefficient
RG2012V-2430-W-T1 and RG2012V-2430-W-T5: Combine ±0.05% tolerance with ±5ppm/°C temperature coefficient

All Susumu upgrade options maintain 0.125W power rating, 0805 package, AEC-Q200 qualification, and ROHS3 compliance.

Higher Power Alternative:

6-2176091-0 (TE Connectivity) provides increased power dissipation capability at 0.25W (1/4W) while maintaining 243 Ω resistance, ±0.1% tolerance, and 0805 package form factor. This component does not carry AEC-Q200 certification and is suitable for non-automotive applications requiring higher thermal headroom.

Frequently Asked Questions (FAQ)

Q: Can RG2012P-2430-B-T5 directly replace RG2012P-2430-B-T1 in existing designs?

A: Yes. RG2012P-2430-B-T5 is a direct equivalent with identical electrical specifications (243 Ω, ±0.1%, 0.125W, ±25ppm/°C) and mechanical compatibility (0805 package). The only difference is packaging format. Both components are AEC-Q200 qualified and ROHS3 compliant.

Q: What is the difference between Susumu RG2012P, RG2012N, and RG2012V series?

A: The letter designation indicates temperature coefficient performance. RG2012P series specifies ±25ppm/°C. RG2012N series improves to ±10ppm/°C. RG2012V series achieves ±5ppm/°C. All three series maintain identical resistance values, package dimensions, and power ratings when comparing equivalent tolerance grades.

Q: Can I use ERA-6AEB2430V as a substitute in automotive applications?

A: Yes. ERA-6AEB2430V is AEC-Q200 qualified and ROHS3 compliant, meeting automotive reliability standards. It provides identical electrical specifications (243 Ω, ±0.1%, 0.125W) and 0805 package compatibility. Panasonic's ERA-6A series is widely used in automotive circuits.

Q: What does the tolerance designation (±0.1%, ±0.05%, ±0.02%) mean for circuit performance?

A: Tolerance specifies the maximum deviation from the nominal 243 Ω resistance value. ±0.1% allows ±0.243 Ω deviation. ±0.05% allows ±0.1215 Ω deviation. ±0.02% allows ±0.0486 Ω deviation. Tighter tolerances are required for precision analog circuits, signal conditioning, and measurement applications.

Q: Is the 6-2176091-0 (0.25W) suitable as a replacement for the 0.125W RG2012P-2430-B-T1?

A: The 6-2176091-0 provides mechanical and electrical compatibility (243 Ω, ±0.1%, 0805 package) with increased power dissipation capability. However, it lacks AEC-Q200 automotive certification. Use this component only in non-automotive applications where higher thermal margin is beneficial. Verify that the increased component height (0.026" vs. 0.020" maximum) does not create PCB assembly conflicts.

Q: What is the significance of temperature coefficient (ppm/°C) in resistor selection?

A: Temperature coefficient indicates how resistance value changes with temperature. Lower values represent better stability. At ±25ppm/°C, a 243 Ω resistor changes approximately 0.006 Ω per degree Celsius. At ±5ppm/°C, the change is approximately 0.001 Ω per degree Celsius. Precision measurement circuits and temperature-sensitive applications benefit from lower temperature coefficients.

Q: Are all listed substitutes available in Tape & Reel packaging?

A: Yes. All active substitute parts listed are available in Tape & Reel (TR) packaging format suitable for automated assembly. The original RG2012P-2430-B-T1 was available in bulk packaging, while RG2012P-2430-B-T5 and all upgrade options are supplied in Tape & Reel format.

Q: What does ROHS3 compliance indicate?

A: ROHS3 (Restriction of Hazardous Substances Directive 3) compliance certifies that the component contains no lead, cadmium, mercury, hexavalent chromium, polybrominated biphenyls, or polybrominated diphenyl ethers above specified thresholds. All listed substitutes maintain ROHS3 compliance for environmental and regulatory conformance.

Q: Can I substitute a higher tolerance part (±0.1%) with a tighter tolerance part (±0.05% or ±0.02%)?

A: Yes. Tighter tolerance parts are direct upgrades that provide improved accuracy without circuit redesign. A ±0.02% part can replace a ±0.1% specification. However, the reverse substitution (lower precision for higher precision requirement) is not acceptable.

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