ERJ-S14F66R5U Equivalent & Substitute Parts

Part Overview

The ERJ-S14F66R5U is a 66.5 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 properties. The part is currently in active production status. Equivalent and substitute parts are necessary when the primary part experiences supply constraints, extended lead times, or when design flexibility across qualified manufacturers is required for procurement optimization.

Substiute Parts

ERJ-S14F66R5U

Panasonic Electronic ComponentsIn Stock: 924ERJ-S14F66R5U Datasheet

Current PartRFQ

ERJ-14NF66R5U

Panasonic Electronic ComponentsIn Stock: 64531ERJ-14NF66R5U Datasheet

SimilarRFQ

AC1210FR-0766R5L

YAGEOIn Stock: 5519AC1210FR-0766R5L Datasheet

SimilarRFQ

RMCF1210FT66R5

Stackpole Electronics IncIn Stock: 8117RMCF1210FT66R5 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ERJ-S14F66R5U is determined by strict equivalence across the following critical parameters: resistance value (66.5 Ohms), 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), and AEC-Q200 automotive qualification. All identified substitute parts meet these electrical and mechanical requirements. Variations in physical dimensions (length, width, height) within the 1210 package specification, manufacturer-specific features (such as anti-sulfur or moisture-resistant coatings), and product lifecycle status (active versus not for new designs) do not disqualify substitution but are noted for design consideration.

Parameter Comparison

Engineering Selection Recommendations

For new design implementations, AC1210FR-0766R5L (YAGEO) and RMCF1210FT66R5 (Stackpole Electronics Inc) are preferred substitutes as both maintain active product status with full AEC-Q200 compliance and ROHS3 certification. The ERJ-14NF66R5U (Panasonic) is electrically and mechanically equivalent but carries a "Not For New Designs" lifecycle designation and should be reserved for legacy system maintenance or replacement applications only. All four parts satisfy identical electrical specifications and automotive qualification requirements, making selection dependent on supply availability, procurement lead times, and existing qualification documentation within the design organization.

Frequently Asked Questions (FAQ)

Q: Can ERJ-14NF66R5U replace ERJ-S14F66R5U in new designs? A: ERJ-14NF66R5U meets all electrical and mechanical specifications for direct substitution. However, it carries a "Not For New Designs" product status. New designs should utilize AC1210FR-0766R5L or RMCF1210FT66R5 to ensure long-term supply continuity.

Q: Are there physical dimension differences between substitute parts? A: All parts conform to the 1210 (3225 Metric) package specification. Minor variations exist within tolerance: AC1210FR-0766R5L measures 3.10mm × 2.60mm with 0.60mm maximum height, while ERJ-S14F66R5U and RMCF1210FT66R5 measure 3.20mm × 2.50mm with 0.70mm maximum height. These variations remain within standard 1210 package parameters and do not affect PCB layout or reflow compatibility.

Q: Do all substitute parts meet automotive qualification requirements? A: Yes. All listed substitute parts carry AEC-Q200 automotive qualification and operate across the identical temperature range (-55°C ~ 155°C) with matching temperature coefficient (±100ppm/°C).

Q: What is the significance of anti-sulfur and moisture-resistant features? A: ERJ-S14F66R5U includes anti-sulfur properties; AC1210FR-0766R5L includes moisture-resistant coating. These are manufacturer-specific enhancements that do not affect core electrical performance or substitution eligibility. Selection between these variants depends on specific environmental exposure requirements in the application.

Q: Are all substitute parts RoHS3 compliant? A: Yes. All four parts listed are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, meeting current environmental and regulatory standards.