ERJ-S14F78R7U Equivalent & Substitute Parts

Part Overview

The ERJ-S14F78R7U is a 78.7 Ohm ±1% thick film chip resistor manufactured by Panasonic Electronic Components in the 1210 (3225 Metric) package with 0.5W power rating. This component is rated for automotive applications under AEC-Q200 and features anti-sulfur construction with operating temperature range from -55°C to 155°C. The part is currently in active production status. Equivalent and substitute parts are identified based on matching electrical specifications, mechanical package compatibility, and automotive qualification requirements.

Substiute Parts

ERJ-S14F78R7U

Panasonic Electronic ComponentsIn Stock: 1072ERJ-S14F78R7U Datasheet

Current PartRFQ

ERJ-14NF78R7U

Panasonic Electronic ComponentsIn Stock: 11141ERJ-14NF78R7U Datasheet

SimilarRFQ

RMCF1210FT78R7

Stackpole Electronics IncIn Stock: 2925RMCF1210FT78R7 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ERJ-S14F78R7U are qualified based on the following criteria:

Electrical Parameters: Resistance value (78.7 Ohms), tolerance (±1%), power rating (0.5W), and temperature coefficient (±100ppm/°C) must match exactly.

Mechanical Parameters: Package type (1210 / 3225 Metric), physical dimensions (0.126" L x 0.098" W / 3.20mm x 2.50mm), and seated height (0.028" / 0.70mm maximum) must be identical.

Compliance & Ratings: All substitute parts must maintain AEC-Q200 automotive qualification, ROHS3 compliance, and MSL 1 rating.

Composition: Thick film construction is required for all substitutes.

Two substitute parts meet these criteria: ERJ-14NF78R7U (Panasonic Electronic Components) and RMCF1210FT78R7 (Stackpole Electronics Inc).

Parameter Comparison

Engineering Selection Recommendations

ERJ-S14F78R7U (Primary Selection): Active production status with anti-sulfur construction. Recommended for new designs requiring long-term supply continuity and enhanced environmental protection.

RMCF1210FT78R7 (Preferred Substitute): Active production status from Stackpole Electronics Inc. Electrically and mechanically equivalent with full AEC-Q200 compliance. Suitable for direct substitution in active designs.

ERJ-14NF78R7U (Legacy Substitute): Marked as "Not For New Designs" by manufacturer. Electrically and mechanically equivalent but intended for legacy system support only. Use only when required for existing product maintenance or when primary and preferred substitutes are unavailable.

Frequently Asked Questions (FAQ)

Q: Can ERJ-14NF78R7U be used as a direct replacement for ERJ-S14F78R7U?

A: Electrically and mechanically, yes. All electrical parameters, package dimensions, and automotive ratings are identical. However, ERJ-14NF78R7U is designated "Not For New Designs," making it suitable only for legacy applications or when other substitutes are unavailable.

Q: What is the difference between ERJ-S14F78R7U and RMCF1210FT78R7?

A: Both parts are electrically and mechanically identical with matching resistance, tolerance, power rating, package, and AEC-Q200 compliance. The primary difference is manufacturer: Panasonic versus Stackpole Electronics Inc. Both are in active production.

Q: Are all three parts interchangeable in automotive applications?

A: Yes, all three parts meet AEC-Q200 automotive qualification and are suitable for automotive circuit applications. Physical footprint and electrical performance are identical across all three parts.

Q: Does the anti-sulfur feature of ERJ-S14F78R7U affect substitution compatibility?

A: The anti-sulfur feature is specific to the ERJ-S14F78R7U series. Substitute parts ERJ-14NF78R7U and RMCF1210FT78R7 do not explicitly list this feature. For applications requiring anti-sulfur protection, ERJ-S14F78R7U is the specified choice.

Q: What is the significance of the 1210 package designation?

A: 1210 is the imperial designation for a surface-mount resistor package measuring 0.126" L x 0.098" W. The metric equivalent is 3225. All three parts use this identical package, ensuring PCB footprint compatibility.

Q: Are there any compliance or certification differences between the three parts?

A: All three parts are ROHS3 compliant, carry MSL 1 rating, and hold AEC-Q200 automotive qualification. No compliance differences exist among the three parts.