ERJ-S1DF4422U Equivalent & Substitute Parts

Part Overview

The ERJ-S1DF4422U is a 44.2 kOhms ±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 with 1076 units in stock.

Substitute parts become necessary when the primary part reaches end-of-life status, inventory constraints occur, or when design requirements permit the use of functionally equivalent alternatives that meet the same electrical and mechanical specifications.

Substiute Parts

ERJ-S1DF4422U

Panasonic Electronic ComponentsIn Stock: 1143ERJ-S1DF4422U Datasheet

Current PartRFQ

ERJ-12SF4422U

Panasonic Electronic ComponentsIn Stock: 1882ERJ-12SF4422U Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ERJ-S1DF4422U is determined by strict equivalence across the following parameters:

• Resistance value: 44.2 kOhms
• Tolerance: ±1%
• Power rating: 0.75W (3/4W)
• Package / Case: 2010 (5025 Metric)
• Composition: Thick Film
• Temperature coefficient: ±100ppm/°C
• Operating temperature range: -55°C ~ 155°C
• Number of terminations: 2
• Physical dimensions: 0.197" L x 0.098" W (5.00mm x 2.50mm)
• Height - Seated (Max): 0.028" (0.70mm)

The ERJ-12SF4422U meets all electrical and mechanical parameters required for direct substitution. This part is identified as a functionally equivalent alternative within the Panasonic Electronic Components product portfolio.

Parameter Comparison

Engineering Selection Recommendations

The ERJ-S1DF4422U is the preferred selection for new designs due to its active product status and ROHS3 compliance. This part provides full regulatory alignment with current environmental and safety standards.

The ERJ-12SF4422U is electrically and mechanically equivalent and may be used as a substitute in existing designs where inventory of the primary part is unavailable. However, this part carries a "Not For New Designs" status and does not meet RoHS3 compliance requirements. Selection of this substitute should be limited to legacy system support or applications where RoHS compliance is not mandated.

Both parts maintain identical electrical performance, thermal characteristics, and automotive AEC-Q200 qualification across the specified operating temperature range of -55°C to 155°C.

Frequently Asked Questions (FAQ)

Q: Can ERJ-12SF4422U be used as a direct replacement for ERJ-S1DF4422U in new automotive designs?

A: The ERJ-12SF4422U meets all electrical and mechanical specifications for functional equivalence. However, it is designated "Not For New Designs" and does not comply with ROHS3 standards. New designs should use the ERJ-S1DF4422U.

Q: Are there any differences in thermal performance between these parts?

A: Both parts share identical temperature coefficient (±100ppm/°C) and operating temperature range (-55°C ~ 155°C). Thermal performance is equivalent.

Q: Do both parts fit the same PCB footprint?

A: Yes. Both parts use the 2010 (5025 Metric) package with identical physical dimensions (0.197" L x 0.098" W, 5.00mm x 2.50mm) and maximum seated height (0.028" / 0.70mm). PCB layout compatibility is confirmed.

Q: What is the difference between anti-sulfur and standard thick film construction?

A: The ERJ-S1DF4422U includes anti-sulfur protection, which is specified in its detailed description. The ERJ-12SF4422U does not list this feature. Both parts maintain the same electrical specifications and AEC-Q200 automotive qualification.

Q: Are moisture sensitivity levels the same for both parts?

A: Yes. Both parts are rated MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for storage or handling.