ERJ-S14F4991U Equivalent & Substitute Parts

Part Overview

The ERJ-S14F4991U is a 4.99 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 is qualified to the AEC-Q200 automotive standard with anti-sulfur properties. The part is currently in active production status.

Substitute parts are necessary when the primary part experiences supply constraints, extended lead times, or when design flexibility permits cross-manufacturer sourcing while maintaining electrical and mechanical compatibility.

Substiute Parts

ERJ-S14F4991U

Panasonic Electronic ComponentsIn Stock: 701ERJ-S14F4991U Datasheet

Current PartRFQ

ERJ-14NF4991U

Panasonic Electronic ComponentsIn Stock: 52192ERJ-14NF4991U Datasheet

SimilarRFQ

AC1210FR-074K99L

YAGEOIn Stock: 90211AC1210FR-074K99L Datasheet

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CRCW12104K99FKEA

Vishay DaleIn Stock: 28322CRCW12104K99FKEA Datasheet

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RC1210FR-074K99L

YAGEOIn Stock: 1472RC1210FR-074K99L Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ERJ-S14F4991U is determined by strict equivalence across the following parameters:

• Resistance value: 4.99 kOhms
• 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
• Termination count: 2
• RoHS compliance: ROHS3 Compliant
• Moisture sensitivity: MSL 1

All substitute parts listed meet these core electrical and mechanical requirements. Variations in physical dimensions (length, width, height) within the 1210 package specification and differences in secondary features (anti-sulfur vs. moisture resistant) do not preclude substitution when the primary electrical parameters are identical.

Parameter Comparison

Engineering Selection Recommendations

For new designs, select from parts with Active product status: ERJ-S14F4991U (Panasonic), AC1210FR-074K99L (YAGEO), CRCW12104K99FKEA (Vishay Dale), or RC1210FR-074K99L (YAGEO). All four parts carry ROHS3 compliance and AEC-Q200 automotive qualification where specified.

The ERJ-14NF4991U carries a "Not For New Designs" status and should be used only for legacy system maintenance or when existing design documentation explicitly requires this part number.

All listed substitutes are electrically and mechanically equivalent within the specified parameter tolerances and are suitable for direct PCB footprint replacement in 1210 package designs.

Frequently Asked Questions (FAQ)

Q: Can ERJ-S14F4991U be replaced with ERJ-14NF4991U?

A: Electrical and mechanical compatibility exists between these parts. However, ERJ-14NF4991U carries a "Not For New Designs" status. Use this substitution only for legacy system support or maintenance applications.

Q: Are all substitute parts AEC-Q200 qualified?

A: ERJ-S14F4991U, ERJ-14NF4991U, and AC1210FR-074K99L explicitly carry AEC-Q200 qualification. CRCW12104K99FKEA and RC1210FR-074K99L meet the same electrical specifications but do not list AEC-Q200 as a primary rating in the provided data. Verify AEC-Q200 requirement against your design specifications before selection.

Q: What is the difference between anti-sulfur and moisture-resistant features?

A: ERJ-S14F4991U includes anti-sulfur properties. AC1210FR-074K99L and RC1210FR-074K99L feature moisture-resistant construction. Both are secondary protective features that do not affect core electrical performance. Selection depends on environmental exposure requirements in your application.

Q: Are physical dimensions identical across all substitute parts?

A: All parts conform to the 1210 (3225 Metric) package specification. Minor dimensional variations exist within tolerance: length ranges from 0.122" to 0.126", width from 0.098" to 0.102", and height from 0.024" to 0.028". These variations remain within standard PCB footprint design margins and do not require layout modification.

Q: Can I use these parts interchangeably on the same PCB?

A: Yes. All listed parts share identical electrical parameters, package format, and termination configuration. Direct substitution on existing PCB layouts is permissible without design revision.