ERJ-S1DF1050U Equivalent & Substitute Parts

Part Overview

The ERJ-S1DF1050U is a 105 Ohm ±1% thick film chip resistor rated at 0.75W (3/4W) in a 2010 (5025 Metric) surface mount package. This component is manufactured by Panasonic Electronic Components and is designed for automotive applications with AEC-Q200 qualification and anti-sulfur protection. The part is currently in active production status. Substitute parts may be required due to inventory constraints, supply chain discontinuation of legacy series, or design flexibility in component sourcing for equivalent electrical performance.

Substiute Parts

ERJ-S1DF1050U

Panasonic Electronic ComponentsIn Stock: 762ERJ-S1DF1050U Datasheet

Current PartRFQ

ERJ-12SF1050U

Panasonic Electronic ComponentsIn Stock: 5664ERJ-12SF1050U Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ERJ-S1DF1050U is based on strict equivalence of the following electrical and mechanical parameters:

• Resistance value: 105 Ohms
• Tolerance: ±1%
• Power rating: 0.75W (3/4W)
• Package: 2010 (5025 Metric)
• Composition: Thick Film
• Temperature coefficient: ±100ppm/°C
• Operating temperature range: -55°C ~ 155°C
• Automotive qualification: AEC-Q200
• RoHS compliance: ROHS3 Compliant
• Moisture sensitivity: MSL 1

The ERJ-12SF1050U meets all these criteria and is therefore a direct electrical and mechanical equivalent. Differences in series designation (ERJ-S1D vs. ERJ-12S) reflect manufacturing lineage and product lifecycle positioning rather than functional performance variation.

Parameter Comparison

Engineering Selection Recommendations

The ERJ-S1DF1050U is the preferred selection for new designs due to its active product status. The ERJ-12SF1050U is electrically and mechanically equivalent and may be used as a substitute in existing designs or where inventory availability of the primary part is constrained. However, the ERJ-12SF1050U carries a "Not For New Designs" status, indicating that Panasonic has positioned this series for legacy support only. Both parts meet identical electrical specifications, dimensional requirements, and automotive compliance standards (AEC-Q200, ROHS3). Selection between these parts should be driven by supply chain availability and design lifecycle requirements rather than technical performance considerations.

Frequently Asked Questions (FAQ)

Q: Can ERJ-12SF1050U be used as a direct replacement for ERJ-S1DF1050U in automotive applications?

A: Yes. Both parts are identical in electrical performance (105 Ohms ±1%, 0.75W), package dimensions (2010/5025 Metric), and automotive qualification (AEC-Q200). The difference in series designation reflects product lifecycle positioning, not functional capability.

Q: What is the significance of the "Not For New Designs" status on the ERJ-12SF1050U?

A: This designation indicates that Panasonic has transitioned the ERJ-12S series to legacy support. While the part remains functionally equivalent and available, new designs should prioritize the ERJ-S1DF1050U (active status) for long-term supply chain stability.

Q: Are the physical dimensions identical between these two parts?

A: Yes. Both parts use the 2010 (5025 Metric) package with identical dimensions: 0.197" L x 0.098" W (5.00mm x 2.50mm) and maximum seated height of 0.028" (0.70mm).

Q: Do both parts meet the same environmental and compliance standards?

A: Yes. Both parts are ROHS3 compliant, REACH unaffected, carry AEC-Q200 automotive qualification, and have MSL 1 (unlimited moisture sensitivity level). Operating temperature range is identical: -55°C ~ 155°C.

Q: Can these parts be used interchangeably in PCB assembly?

A: Yes. Identical package specifications, termination count (2), and footprint dimensions allow direct substitution without PCB layout modifications.