ERJ-S14F3922U Equivalent & Substitute Parts

Part Overview

The ERJ-S14F3922U is a 39.2 kOhms ±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 with 1051 units available in stock.

Identifying equivalent and substitute parts becomes necessary when the primary part number is unavailable, when design revisions require updated component series, or when supply chain optimization requires sourcing from alternative product lines that maintain identical electrical and mechanical specifications.

Substiute Parts

ERJ-S14F3922U

Panasonic Electronic ComponentsIn Stock: 1088ERJ-S14F3922U Datasheet

Current PartRFQ

ERJ-14NF3922U

Panasonic Electronic ComponentsIn Stock: 3981ERJ-14NF3922U Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ERJ-S14F3922U is determined by strict equivalence across the following critical parameters:

• Resistance value: 39.2 kOhms
• Tolerance: ±1%
• Power rating: 0.5W
• Package format: 1210 (3225 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-14NF3922U qualifies as a direct substitute based on complete alignment with all specified electrical and mechanical parameters. The primary distinction is product status classification and series designation, with no functional or performance differences in the specified operating envelope.

Parameter Comparison

Engineering Selection Recommendations

The ERJ-S14F3922U is the preferred selection for new designs due to its active product status and manufacturer commitment to ongoing production and support. This part incorporates anti-sulfur protection, providing enhanced reliability in corrosive environments.

The ERJ-14NF3922U is classified as "Not For New Designs" and should be reserved for legacy system maintenance, field replacements, or applications where existing inventory must be utilized. Despite this classification, the part maintains full electrical and mechanical equivalence with identical performance characteristics across all specified parameters.

For applications requiring AEC-Q200 automotive qualification, both parts satisfy this requirement. Selection between these parts should be based on design phase (new versus legacy) and supply chain availability rather than technical performance differences.

Frequently Asked Questions (FAQ)

Q: Can ERJ-14NF3922U be used as a direct replacement for ERJ-S14F3922U in new designs?

A: Electrically and mechanically, yes. However, the ERJ-14NF3922U carries a "Not For New Designs" status. New designs should specify the ERJ-S14F3922U to ensure long-term manufacturer support and production continuity.

Q: Are there any performance differences between these two parts?

A: No. Both parts share identical resistance value (39.2 kOhms), tolerance (±1%), power rating (0.5W), package format (1210), temperature coefficient (±100ppm/°C), operating temperature range (-55°C ~ 155°C), and AEC-Q200 automotive qualification.

Q: What is the significance of the anti-sulfur feature in the ERJ-S14F3922U?

A: The anti-sulfur protection in the ERJ-S14F3922U provides enhanced resistance to sulfur-containing environments, which can degrade standard thick film resistors. This feature is specified in the main part but not explicitly listed for the ERJ-14NF3922U substitute.

Q: Are both parts RoHS compliant?

A: Yes. Both the ERJ-S14F3922U and ERJ-14NF3922U are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

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

A: Yes. Both parts use identical 1210 (3225 Metric) package dimensions and termination configuration, allowing direct PCB footprint compatibility without layout modifications.

Q: Why does the ERJ-14NF3922U have higher inventory availability?

A: The ERJ-14NF3922U is in legacy status with 3911 units available compared to 1051 units for the active ERJ-S14F3922U. This reflects the transition from the older ERJ-14N series to the current ERJ-S14 series.