ERJ-S14F68R1U Equivalent & Substitute Parts

Part Overview

The ERJ-S14F68R1U is a 68.1 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 features automotive-grade AEC-Q200 qualification with anti-sulfur protection. 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 permits component sourcing from alternative manufacturers while maintaining electrical and mechanical compatibility.

Substiute Parts

ERJ-S14F68R1U

Panasonic Electronic ComponentsIn Stock: 737ERJ-S14F68R1U Datasheet

Current PartRFQ

ERJ-14NF68R1U

Panasonic Electronic ComponentsIn Stock: 21706ERJ-14NF68R1U Datasheet

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CRCW121068R1FKEA

Vishay DaleIn Stock: 11923CRCW121068R1FKEA Datasheet

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RMCF1210FT68R1

Stackpole Electronics IncIn Stock: 9082RMCF1210FT68R1 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ERJ-S14F68R1U is determined by strict equivalence across the following parameters: resistance value (68.1 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 automotive qualification (AEC-Q200). All identified substitute parts meet these criteria. Variations in physical dimensions (height-seated maximum) and product status do not affect functional interchangeability within the specified electrical and thermal operating envelope.

Parameter Comparison

Engineering Selection Recommendations

For new designs, CRCW121068R1FKEA (Vishay Dale) and RMCF1210FT68R1 (Stackpole) are preferred substitutes, as both maintain active product status and full compliance with AEC-Q200 automotive qualification and ROHS3 requirements. The ERJ-14NF68R1U (Panasonic) is electrically and mechanically equivalent but carries a "Not For New Designs" status and should be reserved for legacy system maintenance or replacement applications only. All three substitute parts are functionally interchangeable with the ERJ-S14F68R1U across the specified electrical and thermal operating parameters. The CRCW121068R1FKEA offers a reduced seated height (0.024" vs. 0.028"), which may provide design flexibility in space-constrained applications.

Frequently Asked Questions (FAQ)

Q: Can ERJ-14NF68R1U be used as a direct replacement for ERJ-S14F68R1U in new designs?

A: ERJ-14NF68R1U meets all electrical and mechanical specifications for functional equivalence. However, it carries a "Not For New Designs" status. For new designs, CRCW121068R1FKEA or RMCF1210FT68R1 are recommended to ensure long-term supply continuity and manufacturer support.

Q: Are there any physical compatibility concerns when substituting these parts?

A: All substitute parts use the 1210 (3225 Metric) package with identical footprints. The CRCW121068R1FKEA has a maximum seated height of 0.024" compared to 0.028" for other parts. This difference is within typical PCB assembly tolerances and does not affect electrical performance or mechanical fit in standard applications.

Q: Do all substitute parts meet automotive qualification requirements?

A: Yes. All listed substitute parts carry AEC-Q200 automotive qualification and ROHS3 compliance, meeting the same regulatory and quality standards as the primary ERJ-S14F68R1U part.

Q: What is the significance of the anti-sulfur feature on the ERJ-S14F68R1U?

A: The anti-sulfur feature on the ERJ-S14F68R1U provides enhanced corrosion resistance in harsh environments. The ERJ-14NF68R1U does not explicitly list this feature. For applications requiring anti-sulfur protection, verify environmental exposure conditions before substituting with parts lacking this specification.

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

A: Yes. All parts share identical electrical specifications (68.1 Ohms ±1%, 0.5W, ±100ppm/°C, -55°C ~ 155°C) and the same 1210 package footprint, enabling direct substitution at the component level without circuit redesign.