RG1005V-121-C-T10 Equivalent & Substitute Parts

Part Overview

The RG1005V-121-C-T10 is a 120 Ohms ±0.25% 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, suitable for high-reliability applications operating across -55°C to 155°C. The part is currently classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility while meeting automotive and industrial standards.

Substiute Parts

RG1005V-121-C-T10

SusumuIn Stock: 960RG1005V-121-C-T10 Datasheet

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RG1005V-121-B-T5

SusumuIn Stock: 812RG1005V-121-B-T5 Datasheet

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RG1005V-121-P-T1

SusumuIn Stock: 822RG1005V-121-P-T1 Datasheet

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RG1005V-121-W-T1

SusumuIn Stock: 689RG1005V-121-W-T1 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the RG1005V-121-C-T10 is determined by strict equivalence across the following critical parameters:

Mandatory Equivalence Parameters:

• Resistance value: 120 Ohms (exact match required)
• Package / Case: 0402 (1005 Metric) (physical and electrical compatibility)
• Power rating: 0.063W (1/16W) (thermal handling capability)
• Composition: Thin Film (electrical performance characteristics)
• Temperature coefficient: ±5ppm/°C (thermal stability)
• Operating temperature range: -55°C ~ 155°C (environmental suitability)
• Automotive AEC-Q200 rating (reliability qualification)
• Anti-sulfur feature (environmental protection)
• RoHS3 compliance (regulatory requirement)

Substitution Flexibility Parameter:

• Tolerance: The RG1005V-121-C-T10 specifies ±0.25% tolerance. Substitute parts with equal or tighter (lower) tolerance values are electrically compatible and functionally superior for precision applications.

All three substitute parts maintain identical resistance, package, power rating, composition, temperature coefficient, operating range, and automotive qualification. Substitution differences are limited to tolerance specifications, where tighter tolerances represent enhanced precision capability without compromising backward compatibility.

Parameter Comparison

Engineering Selection Recommendations

RG1005V-121-B-T5 (±0.1% Tolerance) This substitute provides tighter tolerance specification (±0.1% versus ±0.25%) while maintaining all other electrical and mechanical parameters. Product status is active with 765 units in stock. Selection is appropriate for applications requiring improved precision over the obsolete RG1005V-121-C-T10 without design modification. Automotive AEC-Q200 qualification and ROHS3 compliance are maintained.

RG1005V-121-W-T1 (±0.05% Tolerance) This substitute offers significantly tighter tolerance specification (±0.05% versus ±0.25%) for precision-critical applications. Product status is active with 660 units in stock. All electrical characteristics, package dimensions, and automotive qualifications remain identical to the main part. Selection is suitable for circuits requiring enhanced accuracy.

RG1005V-121-P-T1 (±0.02% Tolerance) This substitute provides the tightest tolerance specification (±0.02% versus ±0.25%) available within the RG series 120 Ohm 0402 platform. Product status is active with 762 units in stock. All mechanical and thermal parameters are equivalent to the main part. Selection is appropriate for high-precision measurement and calibration circuits where tolerance performance is critical.

All three substitutes are manufactured by Susumu, maintain identical package footprint (0402), power rating (0.063W), composition (thin film), temperature coefficient (±5ppm/°C), operating range (-55°C to 155°C), and automotive AEC-Q200 qualification. The primary differentiation is tolerance specification, where all substitutes offer equal or superior precision capability.

Frequently Asked Questions (FAQ)

Q: Can RG1005V-121-B-T5, RG1005V-121-W-T1, or RG1005V-121-P-T1 be used as direct replacements for the obsolete RG1005V-121-C-T10?

A: Yes. All three substitute parts are direct replacements. They share identical resistance value (120 Ohms), package (0402), power rating (0.063W), composition (thin film), temperature coefficient (±5ppm/°C), operating temperature range (-55°C to 155°C), and automotive AEC-Q200 qualification. The substitutes feature tighter tolerance specifications, which are electrically compatible and functionally superior.

Q: What is the difference between the three substitute parts?

A: The three substitutes differ only in tolerance specification. RG1005V-121-B-T5 offers ±0.1% tolerance, RG1005V-121-W-T1 offers ±0.05% tolerance, and RG1005V-121-P-T1 offers ±0.02% tolerance. The original part specifies ±0.25% tolerance. All other electrical and mechanical parameters are identical.

Q: Are these parts suitable for automotive applications?

A: Yes. All parts, including the main part and all three substitutes, carry automotive AEC-Q200 qualification and are ROHS3 compliant. They are suitable for automotive and industrial applications requiring high reliability.

Q: Do the substitute parts have the same physical dimensions as the original?

A: Yes. All parts are packaged in 0402 (1005 Metric) case with identical dimensions: 0.039" L x 0.020" W (1.00mm x 0.50mm) and maximum seated height of 0.016" (0.40mm). They are mechanically interchangeable on PCB layouts designed for the RG1005V-121-C-T10.

Q: What is the moisture sensitivity level for these parts?

A: All parts, including the main part and substitutes, have Moisture Sensitivity Level (MSL) 1, which indicates unlimited shelf life without moisture control requirements.

Q: Which substitute should be selected for precision-critical applications?

A: Selection depends on circuit tolerance requirements. For applications requiring tolerance better than ±0.25%, RG1005V-121-B-T5 (±0.1%) is suitable. For applications requiring tolerance better than ±0.1%, RG1005V-121-W-T1 (±0.05%) is appropriate. For applications requiring tolerance better than ±0.05%, RG1005V-121-P-T1 (±0.02%) is the optimal choice.

Q: Are all substitute parts currently in stock?

A: Yes. RG1005V-121-B-T5 has 765 units in stock, RG1005V-121-W-T1 has 660 units in stock, and RG1005V-121-P-T1 has 762 units in stock. All are classified as active products.

Q: Can these parts be used in high-temperature applications?

A: Yes. All parts are rated for operating temperatures from -55°C to 155°C with a temperature coefficient of ±5ppm/°C, making them suitable for extended temperature range applications.