ERJ-S1DF4423U Equivalent & Substitute Parts

Part Overview

The ERJ-S1DF4423U is a 442 kOhms ±1% thick film chip resistor rated at 0.75W (3/4W) in a 2010 (5025 Metric) surface mount package. Manufactured by Panasonic Electronic Components, this component features anti-sulfur coating and automotive AEC-Q200 qualification, making it suitable for demanding automotive and industrial applications operating across -55°C to 155°C.

The ERJ-S1DF4423U is currently in active production status. Equivalent and substitute parts may be required due to supply chain constraints, design revisions, or procurement optimization across multiple qualified manufacturers.

Substiute Parts

ERJ-S1DF4423U

Panasonic Electronic ComponentsIn Stock: 991ERJ-S1DF4423U Datasheet

Current PartRFQ

ERJ-12SF4423U

Panasonic Electronic ComponentsIn Stock: 6993ERJ-12SF4423U Datasheet

SimilarRFQ

CRCW2010442KFKEF

Vishay DaleIn Stock: 12570CRCW2010442KFKEF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ERJ-S1DF4423U is determined by strict equivalence across the following parameters:

• Resistance value: 442 kOhms
• 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 (Unlimited)

All identified substitute parts meet these electrical and mechanical specifications. Substitution is valid across manufacturers when all parameters align with the above criteria.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection: ERJ-S1DF4423U (Panasonic)

The ERJ-S1DF4423U maintains active production status and is recommended for new designs. This part includes anti-sulfur coating, providing enhanced reliability in corrosive environments.

Secondary Selection: CRCW2010442KFKEF (Vishay Dale)

The CRCW2010442KFKEF is an active production alternative from Vishay Dale. All electrical and mechanical parameters are equivalent to the primary part. This option is suitable for designs requiring multi-source qualification or when Panasonic supply is constrained.

Legacy Alternative: ERJ-12SF4423U (Panasonic)

The ERJ-12SF4423U is electrically and mechanically equivalent but carries a "Not For New Designs" status. This part may be used in legacy system maintenance or when existing design documentation specifies this series. New designs should not incorporate this part number.

Frequently Asked Questions (FAQ)

Q: Can ERJ-12SF4423U be used in place of ERJ-S1DF4423U in new designs?

A: No. While ERJ-12SF4423U is electrically and mechanically equivalent, it carries a "Not For New Designs" product status. New designs must use ERJ-S1DF4423U or CRCW2010442KFKEF.

Q: What is the difference between ERJ-S1DF4423U and ERJ-12SF4423U?

A: Both parts share identical electrical specifications (442 kOhms ±1%, 0.75W, AEC-Q200). The primary difference is product lifecycle status: ERJ-S1DF4423U is active, while ERJ-12SF4423U is not recommended for new designs. ERJ-S1DF4423U includes anti-sulfur coating.

Q: Is CRCW2010442KFKEF a direct replacement for ERJ-S1DF4423U?

A: Yes. CRCW2010442KFKEF meets all electrical and mechanical specifications: 442 kOhms ±1%, 0.75W, 2010 package, AEC-Q200 rated, ROHS3 compliant, and MSL 1. Both parts are in active production.

Q: Are all substitute parts qualified for automotive applications?

A: Yes. All listed substitute parts carry AEC-Q200 automotive qualification and operate across the same temperature range (-55°C ~ 155°C).

Q: Can these parts be used interchangeably on the same PCB?

A: Yes. All substitute parts share identical package dimensions (2010 / 5025 Metric), footprint, and termination configuration, enabling direct PCB substitution without layout modifications.

Q: What is the significance of the anti-sulfur feature in ERJ-S1DF4423U?

A: Anti-sulfur coating provides enhanced resistance to sulfur-containing environmental contaminants, improving long-term reliability in harsh industrial and automotive environments. This feature is present in ERJ-S1DF4423U but not explicitly listed for ERJ-12SF4423U or CRCW2010442KFKEF.