ERJ-S14F43R2U Equivalent & Substitute Parts

Part Overview

The ERJ-S14F43R2U is a 43.2 Ohm ±1% thick film chip resistor manufactured by Panasonic Electronic Components in the 1210 (3225 Metric) package. This component is rated for 0.5W power dissipation and meets AEC-Q200 automotive qualification standards with anti-sulfur protection. The part is currently in active production status with 1157 units available in stock.

Substitute parts become necessary when the primary part experiences supply constraints, extended lead times, or when design flexibility permits selection from qualified alternatives that maintain identical electrical and mechanical specifications.

Substiute Parts

ERJ-S14F43R2U

Panasonic Electronic ComponentsIn Stock: 1247ERJ-S14F43R2U Datasheet

Current PartRFQ

ERJ-14NF43R2U

Panasonic Electronic ComponentsIn Stock: 3315ERJ-14NF43R2U Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ERJ-S14F43R2U is determined by strict equivalence across the following parameters:

• Resistance value: 43.2 Ohms
• Tolerance: ±1%
• Power rating: 0.5W
• Package type: 1210 (3225 Metric)
• Composition: Thick Film
• Temperature coefficient: ±100ppm/°C
• Operating temperature range: -55°C to 155°C
• Automotive qualification: AEC-Q200
• RoHS compliance: ROHS3 Compliant
• Moisture sensitivity: MSL 1

The ERJ-14NF43R2U meets all specified parameters and qualifies as a direct substitute. Differences in product status and series designation do not affect electrical or mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

The ERJ-S14F43R2U is the preferred selection for new designs due to its active production status. The ERJ-14NF43R2U qualifies as a direct electrical and mechanical substitute and maintains full compliance with AEC-Q200 automotive standards and ROHS3 requirements. However, the ERJ-14NF43R2U carries a "Not For New Designs" designation, making it suitable only for replacement, repair, or continuation of existing production where the part has already been qualified.

For new product development, the ERJ-S14F43R2U should be the primary selection. The ERJ-14NF43R2U may be used in legacy systems or as an interim solution when supply of the primary part is constrained, provided that the design has already undergone qualification with this component.

Frequently Asked Questions (FAQ)

Q: Can ERJ-14NF43R2U be used as a direct replacement for ERJ-S14F43R2U in automotive applications?

A: Yes. Both parts are AEC-Q200 qualified, share identical electrical specifications (43.2 Ohms ±1%, 0.5W), operate across the same temperature range (-55°C to 155°C), and use the same 1210 package. The primary difference is product status; ERJ-14NF43R2U is not recommended for new designs.

Q: What is the significance of the "Not For New Designs" status on the ERJ-14NF43R2U?

A: This designation indicates that Panasonic is not actively promoting this part for new product development. It remains available for existing applications and legacy support but should not be selected for new designs when the active ERJ-S14F43R2U alternative is available.

Q: Are there any differences in anti-sulfur protection between these parts?

A: The ERJ-S14F43R2U explicitly includes anti-sulfur protection in its specification. The ERJ-14NF43R2U does not list this feature. Both parts meet AEC-Q200 standards and are ROHS3 compliant.

Q: Do both parts have identical PCB footprints?

A: Yes. Both parts use the 1210 (3225 Metric) package with identical dimensions (0.126" L x 0.098" W / 3.20mm x 2.50mm) and maximum seated height (0.028" / 0.70mm). They are mechanically interchangeable on the PCB.

Q: What is the moisture sensitivity level for these resistors?

A: Both parts are rated MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. These components can be stored and handled without special moisture control measures.