RG1005P-1872-B-T1 Equivalent & Substitute Parts

Part Overview

The RG1005P-1872-B-T1 is an 18.7 kOhms ±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 tight tolerance and stable performance across -55°C to 155°C operating range. The part is currently obsolete, necessitating identification of functionally equivalent active alternatives that maintain electrical and mechanical compatibility with existing designs.

Key Parameters

Parameter	Value
Resistance	18.7 kOhms
Tolerance	±0.1%
Power Rating	0.063W (1/16W)
Package	0402 (1005 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 eligibility for the RG1005P-1872-B-T1 is determined by the following critical parameters:

Primary Substitution Criteria:

Resistance value: 18.7 kOhms (exact match required)
Tolerance: ±0.1% or tighter (±0.05% acceptable as upgrade)
Power rating: 0.063W minimum (higher ratings acceptable)
Package: 0402 (1005 Metric) form factor (mandatory for PCB compatibility)
Composition: Thin film technology
Operating temperature range: Must encompass -55°C to 155°C minimum
RoHS3 compliance and MSL 1 rating required

Substitution Categories:

Direct Substitutes (Identical Electrical Specifications): Parts maintaining ±0.1% tolerance, ±25ppm/°C temperature coefficient, and 0.063W power rating with active product status.

Upgrade Substitutes (Enhanced Performance): Parts with improved tolerance (±0.05%), lower temperature coefficient (±10ppm/°C), or higher power ratings (0.13W) while maintaining all other critical parameters.

Cross-Manufacturer Alternatives: Functionally equivalent parts from different manufacturers (Panasonic, Vishay, YAGEO, TE Connectivity) meeting identical electrical and mechanical specifications.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Temp Coeff (ppm/°C)	Temp Range (°C)	Status	AEC-Q200
RG1005P-1872-B-T1	Susumu	18.7 kΩ	±0.1%	0.063	±25	-55 to 155	Obsolete	Yes
RG1005P-1872-B-T5	Susumu	18.7 kΩ	±0.1%	0.063	±25	-55 to 155	Active	Yes
RG1005N-1872-B-T5	Susumu	18.7 kΩ	±0.1%	0.063	±10	-55 to 155	Active	Yes
RG1005N-1872-W-T1	Susumu	18.7 kΩ	±0.05%	0.063	±10	-55 to 155	Active	Yes
RG1005P-1872-W-T5	Susumu	18.7 kΩ	±0.05%	0.063	±25	-55 to 155	Active	Yes
CPF0402B18K7E1	TE Connectivity	18.7 kΩ	±0.1%	0.063	±25	-55 to 155	Active	No
ERA-2AEB1872X	Panasonic	18.7 kΩ	±0.1%	0.063	±25	-55 to 155	Active	Yes
MCS04020D1872BE100	Vishay Beyschlag	18.7 kΩ	±0.1%	0.063	±25	-55 to 125	Active	No
RT0402BRD0718K7L	YAGEO	18.7 kΩ	±0.1%	0.063	±25	-55 to 155	Active	No
TNPW040218K7BEED	Vishay Dale	18.7 kΩ	±0.1%	0.13	±25	-55 to 175	Active	Yes

Engineering Selection Recommendations

Primary Recommendation - Direct Equivalent: RG1005P-1872-B-T5 (Susumu) is the direct successor to the obsolete RG1005P-1872-B-T1, maintaining identical electrical specifications (18.7 kΩ, ±0.1%, 0.063W, ±25ppm/°C) and automotive AEC-Q200 qualification. This part is active and available in high inventory (1078 pcs), providing seamless design compatibility with no parameter deviations.

Secondary Recommendation - Enhanced Performance: RG1005N-1872-B-T5 (Susumu) offers improved temperature stability with ±10ppm/°C coefficient while maintaining all other specifications. This upgrade is suitable for applications requiring superior long-term accuracy without design modification. Automotive AEC-Q200 rated and active status confirmed.

Cross-Manufacturer Alternatives: ERA-2AEB1872X (Panasonic) provides identical electrical and mechanical specifications with automotive AEC-Q200 qualification and extended inventory availability (4101 pcs). TNPW040218K7BEED (Vishay Dale) offers enhanced power rating (0.13W) and extended temperature range (-55°C to 175°C) with AEC-Q200 compliance, suitable for applications requiring thermal margin.

Conditional Substitutes: CPF0402B18K7E1 (TE Connectivity) and RT0402BRD0718K7L (YAGEO) match electrical specifications but lack automotive AEC-Q200 certification. These are suitable only for non-automotive applications. MCS04020D1872BE100 (Vishay Beyschlag) has reduced upper temperature limit (125°C vs. 155°C), restricting use to applications not exceeding this threshold.

Frequently Asked Questions (FAQ)

Q: Can RG1005P-1872-B-T5 be used as a direct replacement for RG1005P-1872-B-T1?

A: Yes. Both parts share identical electrical specifications (18.7 kΩ, ±0.1%, 0.063W, ±25ppm/°C) and mechanical form factor (0402). The primary difference is product status (active vs. obsolete) and packaging format. RG1005P-1872-B-T5 is packaged in Tape & Reel format, which is standard for production assembly.

Q: What is the difference between RG1005P and RG1005N series?

A: The RG1005N series features improved temperature coefficient (±10ppm/°C) compared to RG1005P (±25ppm/°C). Both maintain identical resistance, tolerance, and power ratings. Selection depends on application requirements for temperature stability and long-term accuracy.

Q: Are there tolerance upgrades available?

A: Yes. RG1005N-1872-W-T1 and RG1005P-1872-W-T5 offer ±0.05% tolerance (tighter than the original ±0.1%), providing enhanced precision for applications requiring improved accuracy. These parts maintain identical mechanical and thermal specifications.

Q: Does TNPW040218K7BEED have higher power rating than the original part?

A: Yes. TNPW040218K7BEED is rated for 0.13W compared to the original 0.063W. This higher power rating provides thermal margin in applications with elevated power dissipation. The part also extends the upper operating temperature to 175°C and includes moisture-resistant coating.

Q: Which substitute parts maintain automotive AEC-Q200 qualification?

A: RG1005P-1872-B-T5, RG1005N-1872-B-T5, RG1005N-1872-W-T1, RG1005P-1872-W-T5, ERA-2AEB1872X, and TNPW040218K7BEED all carry automotive AEC-Q200 certification. These parts are suitable for automotive and high-reliability applications.

Q: Is the 0402 package form factor identical across all substitutes?

A: Yes. All substitute parts use the 0402 (1005 Metric) package with identical footprint dimensions (0.039" L × 0.020" W). Physical PCB compatibility is maintained across all alternatives. Height variations (0.014" to 0.016" seated maximum) are within standard assembly tolerances.

Q: What is the inventory status of substitute parts?

A: RG1005P-1872-B-T5 has 1078 pcs available. ERA-2AEB1872X offers the highest inventory at 4101 pcs. RT0402BRD0718K7L provides 17412 pcs. TNPW040218K7BEED has 5900 pcs. Inventory levels support both prototype and production-volume requirements.

Q: Can non-AEC-Q200 parts be used in automotive applications?

A: Non-AEC-Q200 parts (CPF0402B18K7E1, RT0402BRD0718K7L, MCS04020D1872BE100) do not meet automotive qualification standards and are restricted to non-automotive applications. Automotive designs must specify AEC-Q200 certified alternatives.

Q: What is the operating temperature limitation of MCS04020D1872BE100?

A: MCS04020D1872BE100 has a maximum operating temperature of 125°C, compared to 155°C for the original part. This 30°C reduction restricts use to applications where ambient and self-heating do not exceed this threshold. Applications requiring full -55°C to 155°C range must select alternative parts.

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