RG2012V-1781-C-T5 Equivalent & Substitute Parts

Part Overview

The RG2012V-1781-C-T5 is a 1.78 kOhms ±0.25% thin film chip resistor in 0805 (2012 Metric) package rated for 0.125W (1/8W) power dissipation. This component is designed for automotive applications with AEC-Q200 qualification and anti-sulfur construction. The part is currently obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility while meeting automotive reliability standards.

Substiute Parts

RG2012V-1781-C-T5

SusumuIn Stock: 931RG2012V-1781-C-T5 Datasheet

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RG2012V-1781-B-T5

SusumuIn Stock: 684RG2012V-1781-B-T5 Datasheet

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RG2012V-1781-P-T1

SusumuIn Stock: 934RG2012V-1781-P-T1 Datasheet

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RG2012V-1781-W-T1

SusumuIn Stock: 805RG2012V-1781-W-T1 Datasheet

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RG2012V-1781-W-T5

SusumuIn Stock: 1079RG2012V-1781-W-T5 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the RG2012V-1781-C-T5 is determined by the following critical parameters that must remain constant across all equivalent parts:

Fixed Parameters (Non-Negotiable):

• Resistance value: 1.78 kOhms
• Power rating: 0.125W (1/8W)
• Package: 0805 (2012 Metric)
• Composition: Thin Film
• Features: Anti-Sulfur, Automotive AEC-Q200
• Temperature coefficient: ±5ppm/°C
• Operating temperature range: -55°C ~ 155°C
• Physical dimensions: 0.079" L x 0.049" W (2.00mm x 1.25mm)
• Height (seated max): 0.020" (0.50mm)
• Compliance: ROHS3, REACH Unaffected

Variable Parameter (Substitution Basis):

• Tolerance: The main part specifies ±0.25%. Substitute parts with tighter tolerances (±0.1%, ±0.05%, ±0.02%) are electrically compatible and represent upgrades in precision performance.

All substitute parts listed are manufactured by Susumu in the RG series and maintain full compatibility with the original part's electrical and mechanical specifications while offering improved tolerance characteristics.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitution Candidates:

The RG2012V-1781-W-T5 is the direct functional equivalent with identical tolerance (±0.05% vs ±0.25% represents a tighter specification) and maintains all electrical and mechanical parameters. This part is active in production and available in standard Tape & Reel packaging.

The RG2012V-1781-B-T5 offers improved tolerance (±0.1%) while maintaining all other specifications and is actively manufactured.

The RG2012V-1781-P-T1 provides the highest precision tolerance (±0.02%) for applications requiring superior accuracy. This part is actively produced and available.

The RG2012V-1781-W-T1 delivers ±0.05% tolerance with identical electrical performance to the W-T5 variant.

Selection Basis:

All substitute parts are manufactured by Susumu in the RG series, maintain AEC-Q200 automotive qualification, and are ROHS3 compliant. The primary distinction between candidates is tolerance specification and packaging format. Selection should be based on application tolerance requirements and production volume needs (Tape & Reel packaging is standard for high-volume assembly).

Frequently Asked Questions (FAQ)

Q: Can RG2012V-1781-B-T5 be used as a direct replacement for RG2012V-1781-C-T5?

A: Yes. The RG2012V-1781-B-T5 maintains identical resistance (1.78 kOhms), power rating (0.125W), package (0805), composition (thin film), temperature coefficient (±5ppm/°C), operating range (-55°C ~ 155°C), and automotive qualifications (AEC-Q200, anti-sulfur). The tolerance specification is tighter (±0.1% vs ±0.25%), which is compatible with the original application.

Q: What is the difference between RG2012V-1781-W-T5 and RG2012V-1781-W-T1?

A: Both parts are identical in all electrical and mechanical specifications. The suffix designation (T5 vs T1) indicates different packaging tape specifications. Both are available in Tape & Reel format and are functionally interchangeable.

Q: Is RG2012V-1781-P-T1 suitable for all applications requiring RG2012V-1781-C-T5?

A: Yes. The RG2012V-1781-P-T1 is fully compatible with all electrical and mechanical requirements. The ±0.02% tolerance is tighter than the original ±0.25% specification, making it suitable for precision applications. All automotive qualifications and compliance certifications are maintained.

Q: Why are all substitute parts listed as "Active" while the original is "Obsolete"?

A: The RG2012V-1781-C-T5 has been discontinued by the manufacturer. The substitute parts represent the current active production alternatives from Susumu that maintain identical electrical and mechanical specifications.

Q: Are there any package compatibility issues when substituting these parts?

A: No. All parts use the 0805 (2012 Metric) package with identical physical dimensions (0.079" L x 0.049" W, height 0.020" max). PCB footprints and assembly processes remain unchanged. Substitute parts are supplied in Tape & Reel packaging, which is standard for automated assembly.

Q: Do all substitute parts meet automotive standards?

A: Yes. All substitute parts carry AEC-Q200 qualification, anti-sulfur construction, and are ROHS3 compliant. They are suitable for automotive applications with identical reliability ratings as the original part.