FEPF6AT-E3/45 Equivalent & Substitute Parts

Part Overview

The FEPF6AT-E3/45 is a diode array rectifier manufactured by Vishay General Semiconductor - Diodes Division. This component features a 1 Pair Common Cathode configuration with a maximum reverse voltage of 50 V and an average rectified current of 6A per diode. The device is housed in a TO-220-3 Full Pack with isolated tab package for through-hole mounting applications.

The FEPF6AT-E3/45 is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this diode array configuration.

Substiute Parts

FEPF6AT-E3/45

Vishay General Semiconductor - Diodes DivisionIn Stock: 940FEPF6AT-E3/45 Datasheet

Current PartRFQ

HER1001G C0G

Taiwan Semiconductor CorporationIn Stock: 731HER1001G C0G Datasheet

MFR RecommendedRFQ

SFF1001GHC0G

Taiwan Semiconductor CorporationIn Stock: 1045SFF1001GHC0G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the FEPF6AT-E3/45 are identified based on strict electrical and mechanical compatibility criteria. The following parameters determine substitution eligibility:

Critical Matching Parameters:

• Diode Configuration: 1 Pair Common Cathode
• Voltage - DC Reverse (Vr) (Max): 50 V minimum
• Mounting Type: Through Hole
• Package / Case: TO-220-3 configuration with isolated tab (ITO-220AB)
• Operating Temperature Range: -55°C ~ 150°C minimum
• RoHS3 Compliance: Required
• MSL Rating: 1 (Unlimited)

Current Rating Consideration: Substitute parts identified in this reference maintain or exceed the 6A average rectified current specification of the main part. Parts with higher current ratings (10A) are acceptable substitutes as they provide enhanced performance margin within the same package and voltage class.

Speed and Recovery Characteristics: All identified substitutes maintain Fast Recovery classification (≤ 500ns, > 200mA) consistent with the original part specification.

Parameter Comparison

Engineering Selection Recommendations

HER1001G C0G Selection Criteria: The HER1001G C0G is an active product manufactured by Taiwan Semiconductor Corporation. This substitute maintains identical voltage and temperature specifications while providing enhanced current capacity at 10A per diode. The part is ROHS3 compliant and carries unlimited moisture sensitivity rating. The standard grade classification and active product status ensure ongoing availability and supply chain support. The TO-220-3 package configuration provides mechanical compatibility with through-hole mounting applications.

SFF1001GHC0G Selection Criteria: The SFF1001GHC0G is an active product with automotive-grade qualification (AEC-Q101) manufactured by Taiwan Semiconductor Corporation. This substitute provides identical voltage, temperature, and package specifications to the original FEPF6AT-E3/45, including the isolated tab configuration (ITO-220AB). The 10A current rating exceeds the original 6A specification. The automotive qualification and active product status make this part suitable for applications requiring enhanced reliability documentation and long-term supply assurance. The reverse recovery time of 35 ns matches the original specification exactly.

Primary Recommendation: For applications requiring direct functional replacement with enhanced current capacity and active product status, both HER1001G C0G and SFF1001GHC0G are suitable. Selection between these two substitutes depends on application requirements: HER1001G C0G for standard industrial applications, and SFF1001GHC0G for automotive or mission-critical applications requiring AEC-Q101 qualification.

Frequently Asked Questions (FAQ)

Q: Can the HER1001G C0G directly replace the FEPF6AT-E3/45 in existing designs?

A: The HER1001G C0G maintains identical voltage (50 V), temperature range (-55°C ~ 150°C), and diode configuration (1 Pair Common Cathode). The primary difference is the current rating increase from 6A to 10A per diode and the package variant (TO-220-3 versus ITO-220AB). Designs operating at or below 6A current levels are compatible. Verify PCB layout and thermal management accommodate the substitute part's specifications.

Q: What is the difference between the TO-220-3 and ITO-220AB packages?

A: Both are TO-220-3 form factor packages. The ITO-220AB designation indicates an isolated tab configuration, providing electrical isolation between the tab and the case. The standard TO-220-3 package may have a connected tab. The FEPF6AT-E3/45 and SFF1001GHC0G both use ITO-220AB (isolated tab). The HER1001G C0G uses standard TO-220-3. Verify isolation requirements for your application before selection.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. Both HER1001G C0G and SFF1001GHC0G are ROHS3 compliant with MSL rating of 1 (Unlimited), matching the original FEPF6AT-E3/45 specifications.

Q: What does AEC-Q101 qualification mean for the SFF1001GHC0G?

A: AEC-Q101 is an automotive electronics qualification standard. The SFF1001GHC0G carries automotive-grade qualification, indicating the part meets enhanced reliability and testing requirements for automotive applications. This qualification is not present on the original FEPF6AT-E3/45 or the HER1001G C0G.

Q: Why do the substitute parts have higher current ratings than the original?

A: The substitute parts (HER1001G C0G and SFF1001GHC0G) are rated at 10A per diode compared to the original 6A specification. Higher current ratings within the same voltage class and package provide design margin and enhanced performance capability. Applications designed for 6A operation remain fully compatible with 10A-rated substitutes.

Q: Is the reverse recovery time difference between parts significant?

A: The FEPF6AT-E3/45 and SFF1001GHC0G both specify 35 ns reverse recovery time. The HER1001G C0G specifies 50 ns. For most standard rectification applications, this 15 ns difference is not significant. High-frequency switching applications should verify compatibility with the specific reverse recovery time requirement.

Q: Can I use these parts interchangeably in production?

A: Both substitute parts are active products with established supply chains. The SFF1001GHC0G provides the closest electrical and mechanical match to the original FEPF6AT-E3/45, including identical package designation (ITO-220AB) and reverse recovery time (35 ns). For production transitions from the obsolete FEPF6AT-E3/45, the SFF1001GHC0G is the preferred substitute. The HER1001G C0G is suitable where the standard TO-220-3 package variant is acceptable.