RG2012N-1211-B-T5 Equivalent & Substitute Parts

Part Overview

The RG2012N-1211-B-T5 is a thin film chip resistor manufactured by Susumu with a resistance value of 1.21 kOhms and a tolerance of ±0.1%. This 0805 (2012 Metric) surface mount component is rated for 0.125W (1/8W) power dissipation and is designed for automotive applications with AEC-Q200 qualification. The part features anti-sulfur construction and operates across a temperature range of -55°C to 155°C. Identification of equivalent and substitute parts is necessary to ensure design flexibility, manage supply chain continuity, and accommodate alternative sourcing requirements while maintaining electrical and mechanical compatibility.

Substiute Parts

RG2012N-1211-B-T5

SusumuIn Stock: 926RG2012N-1211-B-T5 Datasheet

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RG2012N-1211-W-T1

SusumuIn Stock: 2067RG2012N-1211-W-T1 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the RG2012N-1211-B-T5 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 1.21 kOhms
• Package / Case: 0805 (2012 Metric)
• Power rating: 0.125W (1/8W)
• Composition: Thin Film
• Temperature coefficient: ±10ppm/°C
• Operating temperature range: -55°C ~ 155°C
• Automotive AEC-Q200 qualification
• Anti-sulfur construction

Allowable Variation:

• Tolerance may be tighter (lower tolerance value) than the original specification without affecting compatibility. A substitute part with ±0.05% tolerance is functionally compatible with a design specified for ±0.1% tolerance.

The RG2012N-1211-W-T1 qualifies as a direct substitute because it maintains all mandatory parameters while providing improved tolerance performance.

Parameter Comparison

Engineering Selection Recommendations

Both the RG2012N-1211-B-T5 and RG2012N-1211-W-T1 are active products manufactured by Susumi and carry full AEC-Q200 automotive qualification. Both parts are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component manufacturing and use.

The RG2012N-1211-W-T1 substitute part provides tighter tolerance performance (±0.05% versus ±0.1%) while maintaining identical electrical and mechanical specifications across all other parameters. This enhanced tolerance characteristic makes the substitute suitable for applications requiring higher precision without any compromise to thermal performance, power rating, or environmental operating range.

Selection between these parts should be based on application-specific tolerance requirements. Where ±0.1% tolerance is specified, either part is acceptable. Where tighter tolerance is required, the RG2012N-1211-W-T1 is the appropriate selection.

Frequently Asked Questions (FAQ)

Q: Can the RG2012N-1211-W-T1 be used as a direct replacement for the RG2012N-1211-B-T5?

A: Yes. The RG2012N-1211-W-T1 is a direct substitute. It maintains identical resistance value, power rating, package dimensions, and operating temperature range. The substitute features improved tolerance (±0.05% versus ±0.1%), which is a performance enhancement rather than a limitation.

Q: Are there any package or footprint differences between these parts?

A: No. Both parts use the 0805 (2012 Metric) package with identical dimensions of 0.079" L x 0.049" W (2.00mm x 1.25mm) and maximum seated height of 0.020" (0.50mm). PCB footprints and assembly processes are identical.

Q: Do both parts meet automotive qualification requirements?

A: Yes. Both the RG2012N-1211-B-T5 and RG2012N-1211-W-T1 carry AEC-Q200 automotive qualification and feature anti-sulfur construction. Both are suitable for automotive applications across the full operating temperature range of -55°C to 155°C.

Q: What is the difference between the B-T5 and W-T1 designations?

A: The designations reflect different tolerance grades and packaging specifications within the Susumu RG series. The B-T5 variant specifies ±0.1% tolerance, while the W-T1 variant specifies ±0.05% tolerance. Both are thin film 0805 resistors with identical electrical performance characteristics except for tolerance.

Q: Are there any moisture sensitivity or storage considerations?

A: Both parts carry Moisture Sensitivity Level (MSL) rating of 1, which indicates unlimited shelf life and no special moisture control requirements during storage or handling.

Q: Can the substitute part be used in designs originally specified for ±0.1% tolerance?

A: Yes. The substitute part with ±0.05% tolerance exceeds the original specification and is fully compatible with designs requiring ±0.1% tolerance. Tighter tolerance is always acceptable as a substitute for looser tolerance specifications.