ERJ-S14F21R0U Equivalent & Substitute Parts

Part Overview

The ERJ-S14F21R0U is a 21 Ohm ±1% thick film chip resistor manufactured by Panasonic Electronic Components in the 1210 (3225 Metric) package format. 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.

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-S14F21R0U

Panasonic Electronic ComponentsIn Stock: 926ERJ-S14F21R0U Datasheet

Current PartRFQ

ERJ-14NF21R0U

Panasonic Electronic ComponentsIn Stock: 21660ERJ-14NF21R0U Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ERJ-S14F21R0U is determined by strict equivalence across the following parameters:

• Resistance value: 21 Ohms
• Tolerance: ±1%
• Power rating: 0.5W
• Package format: 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-14NF21R0U qualifies as a direct substitute based on complete alignment with all specified electrical and mechanical parameters. This part maintains identical resistance, tolerance, power rating, package dimensions, and thermal characteristics. Both components are manufactured by Panasonic Electronic Components and carry AEC-Q200 automotive certification.

Parameter Comparison

Engineering Selection Recommendations

The ERJ-S14F21R0U is the preferred selection for new designs due to its active production status. The ERJ-14NF21R0U provides functional equivalence for applications where the primary part is unavailable, though it carries a "Not For New Designs" designation from the manufacturer.

Both parts satisfy identical electrical performance requirements and automotive compliance standards. Selection between these parts should be based on availability and design phase considerations. For ongoing production or new design initiation, the ERJ-S14F21R0U is the appropriate choice. For legacy system support or supply chain contingency, the ERJ-14NF21R0U maintains full electrical and mechanical compatibility.

Frequently Asked Questions (FAQ)

Q: Can ERJ-14NF21R0U be used as a direct replacement for ERJ-S14F21R0U?

A: Yes. Both parts share identical electrical specifications (21 Ohms ±1%, 0.5W), package format (1210), thermal characteristics (±100ppm/°C, -55°C to 155°C), and automotive certification (AEC-Q200). Physical dimensions and termination count are equivalent.

Q: What is the significance of the "Not For New Designs" status on the ERJ-14NF21R0U?

A: This designation indicates the manufacturer does not recommend this part for new product development. However, it remains functionally equivalent and suitable for replacement applications, legacy system maintenance, or supply chain alternatives.

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

A: The ERJ-S14F21R0U explicitly includes anti-sulfur protection in its specification. The ERJ-14NF21R0U does not list this feature. For applications requiring anti-sulfur protection, the ERJ-S14F21R0U is the specified choice.

Q: Do both parts meet the same RoHS and automotive standards?

A: Yes. Both parts are ROHS3 compliant and carry AEC-Q200 automotive qualification. Moisture sensitivity level is MSL 1 for both, indicating unlimited shelf life under standard storage conditions.

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

A: Yes. Identical package format (1210), footprint dimensions (3.20mm x 2.50mm), and termination configuration (2 terminations) ensure direct PCB compatibility without layout modifications.