RG2012N-4022-B-T1 Equivalent & Substitute Parts

Part Overview

The RG2012N-4022-B-T1 is a 40.2 kOhms ±0.1% thin film chip resistor in 0805 (2012 Metric) package rated for 0.125W (1/8W) 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 for ongoing design support and procurement continuity. Active alternatives are available from both Susumu and third-party manufacturers with identical or enhanced electrical characteristics.

Substiute Parts

RG2012N-4022-B-T1

SusumuIn Stock: 832RG2012N-4022-B-T1 Datasheet

Current PartRFQ

RG2012N-4022-B-T5

SusumuIn Stock: 1140RG2012N-4022-B-T5 Datasheet

DirectRFQ

RG2012N-4022-W-T1

SusumuIn Stock: 1174RG2012N-4022-W-T1 Datasheet

UpgradeRFQ

RG2012N-4022-W-T5

SusumuIn Stock: 1091RG2012N-4022-W-T5 Datasheet

UpgradeRFQ

TNPW080540K2BYEA

Vishay DaleIn Stock: 836TNPW080540K2BYEA Datasheet

UpgradeRFQ

TNPU080540K2BZEN00

Vishay DaleIn Stock: 858TNPU080540K2BZEN00 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RG2012N-4022-B-T1 is determined by the following critical parameters:

Primary Substitution Criteria:

• Resistance value: 40.2 kOhms (exact match required)
• Package / Case: 0805 (2012 Metric) (exact match required)
• Tolerance: ±0.1% or tighter (equal or superior tolerance acceptable)
• Power Rating: 0.125W minimum (equal or higher acceptable)
• Composition: Thin Film (required for performance characteristics)
• Automotive AEC-Q200 qualification (required for automotive applications)
• RoHS3 compliance (required for regulatory conformance)

Substitution Categories:

Direct Equivalent (Packaging Variant): RG2012N-4022-B-T5 maintains identical electrical specifications with alternative packaging format (Tape & Reel vs. bulk).

Upgrade Substitutes (Enhanced Tolerance): RG2012N-4022-W-T1 and RG2012N-4022-W-T5 provide superior tolerance of ±0.05% while maintaining all other critical parameters.

Cross-Manufacturer Alternatives: TNPW080540K2BYEA (Vishay Dale) offers higher power rating (0.26W) with identical tolerance and extended operating temperature. TNPU080540K2BZEN00 (Vishay Dale) provides equivalent specifications with improved temperature coefficient (±5ppm/°C) and moisture-resistant construction.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications): RG2012N-4022-B-T5 is the primary direct equivalent. Both parts share identical electrical and mechanical specifications with only packaging format differentiation (Tape & Reel). This part is currently active in production and maintains full AEC-Q200 automotive qualification and RoHS3 compliance.

For Enhanced Tolerance Applications: RG2012N-4022-W-T1 and RG2012N-4022-W-T5 provide superior tolerance of ±0.05%, representing a 50% improvement over the original ±0.1% specification. These parts are suitable for applications requiring tighter resistance accuracy while maintaining all other critical parameters. Both are active products with full compliance certifications.

For Extended Operating Temperature Range: TNPW080540K2BYEA (Vishay Dale) extends the maximum operating temperature to 175°C compared to the original 155°C specification. This part also provides increased power rating (0.26W vs. 0.125W), offering thermal margin for higher dissipation scenarios. Identical tolerance and AEC-Q200 qualification are maintained.

For Improved Temperature Stability: TNPU080540K2BZEN00 (Vishay Dale) offers superior temperature coefficient of ±5ppm/°C compared to ±10ppm/°C in the original part, providing enhanced frequency stability in precision circuits. This part includes moisture-resistant construction and maintains equivalent tolerance and power rating specifications.

Procurement Considerations: All substitute parts are currently active in production with confirmed inventory availability. Selection should be based on specific application requirements regarding tolerance, operating temperature range, and power dissipation margins. Cross-manufacturer substitution (Susumu to Vishay Dale) is electrically and mechanically compatible within the specified parameters.

Frequently Asked Questions (FAQ)

Q: Can RG2012N-4022-B-T5 be used as a direct replacement for RG2012N-4022-B-T1?

A: Yes. RG2012N-4022-B-T5 is a direct electrical and mechanical equivalent. The difference is packaging format: RG2012N-4022-B-T1 uses bulk packaging while RG2012N-4022-B-T5 is supplied in Tape & Reel format. Both parts have identical resistance (40.2 kOhms), tolerance (±0.1%), power rating (0.125W), package (0805), and AEC-Q200 qualification.

Q: What is the difference between the Susumu RG2012N-4022-W variants and the original RG2012N-4022-B-T1?

A: The primary difference is tolerance specification. The RG2012N-4022-W variants (both T1 and T5) provide ±0.05% tolerance compared to ±0.1% in the original part. All other parameters—resistance value, power rating, package, temperature coefficient, and operating range—remain identical. The W designation indicates the tighter tolerance grade.

Q: Are Vishay Dale TNPW and TNPU series parts compatible with the original Susumu part?

A: Yes, both Vishay Dale parts are compatible. TNPW080540K2BYEA and TNPU080540K2BZEN00 maintain the same 0805 package, 40.2 kOhms resistance, ±0.1% tolerance, and AEC-Q200 qualification. Mechanical footprint and electrical performance are equivalent. Differences exist in power rating, operating temperature range, and temperature coefficient as detailed in the parameter comparison table.

Q: What is the significance of the packaging designations (T1 vs. T5) in Susumu part numbers?

A: The T1 and T5 designations refer to packaging format. T1 indicates bulk or tape packaging, while T5 indicates Tape & Reel format. These designations do not affect electrical specifications or component performance. Selection between T1 and T5 depends on manufacturing process requirements and inventory management practices.

Q: Can I use TNPW080540K2BYEA in place of RG2012N-4022-B-T1 if my circuit operates at temperatures above 155°C?

A: Yes. TNPW080540K2BYEA extends the maximum operating temperature to 175°C, providing compatibility for higher-temperature applications. The part maintains identical resistance, tolerance, and AEC-Q200 qualification. The increased power rating (0.26W vs. 0.125W) provides additional thermal margin.

Q: Which substitute part offers the best temperature stability?

A: TNPU080540K2BZEN00 provides the superior temperature coefficient of ±5ppm/°C compared to ±10ppm/°C in all other listed parts. This specification is relevant for precision analog circuits where frequency stability or resistance drift over temperature is a design constraint.

Q: Are all substitute parts RoHS3 compliant and AEC-Q200 qualified?

A: Yes. All substitute parts listed maintain RoHS3 compliance and AEC-Q200 automotive qualification. These certifications are mandatory for automotive and regulated applications and are preserved across all equivalent and substitute options.

Q: What is the physical size difference between the original part and Vishay Dale substitutes?

A: The package designation (0805 / 2012 Metric) is identical for all parts, ensuring PCB footprint compatibility. Susumu parts have a maximum seated height of 0.020" (0.50mm), while Vishay Dale parts have a maximum seated height of 0.022" (0.55mm). This 0.002" difference is within standard PCB assembly tolerances and does not affect component placement or functionality.

Q: Can I mix Susumu and Vishay Dale parts in the same production run?

A: Yes. All parts meet identical electrical specifications (40.2 kOhms, ±0.1% tolerance minimum, 0.125W minimum power rating) and mechanical requirements (0805 package, AEC-Q200 qualification, RoHS3 compliance). Cross-manufacturer substitution is electrically and mechanically compatible. Manufacturing process considerations should be evaluated based on specific assembly requirements.