FESF16GTHE3_A/P Equivalent & Substitute Parts

Part Overview

The FESF16GTHE3_A/P is a general-purpose rectifier diode manufactured by Vishay General Semiconductor - Diodes Division. This through-hole component operates at 400 V DC reverse voltage with a 16 A average rectified current rating. The device is classified as Active product status and carries automotive-grade qualification under AEC-Q101 standards. Substitute parts are identified when the original component becomes unavailable, when inventory constraints exist, or when design requirements permit operation with alternative electrical characteristics within the same functional category.

Substiute Parts

FESF16GTHE3_A/P

Vishay General Semiconductor - Diodes DivisionIn Stock: 965FESF16GTHE3_A/P Datasheet

Current PartRFQ

STTH30R04DY

STMicroelectronicsIn Stock: 1637STTH30R04DY Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the FESF16GTHE3_A/P is determined by equivalence in the following critical parameters:

Mandatory Equivalence Criteria:

• Voltage - DC Reverse (Vr) (Max): 400 V minimum
• Mounting Type: Through Hole
• Package / Case: TO-220-2 or compatible footprint
• Grade: Automotive
• Qualification: AEC-Q101
• Speed Classification: Fast Recovery ≤ 500ns, > 200mA
• RoHS Status: ROHS3 Compliant

Allowable Variation Parameters:

• Current - Average Rectified (Io): Equal or greater than 16 A
• Voltage - Forward (Vf) (Max): Equal or lower than 1.3 V at rated current
• Reverse Recovery Time (trr): Equal or lower than 50 ns
• Current - Reverse Leakage @ Vr: Equal or lower than 10 µA @ 400 V
• Operating Temperature - Junction: Range must encompass or exceed -65°C to 150°C

The STTH30R04DY meets all mandatory equivalence criteria and operates within allowable variation parameters, qualifying as a direct substitute.

Parameter Comparison

Engineering Selection Recommendations

The STTH30R04DY qualifies as a direct substitute for the FESF16GTHE3_A/P based on the following engineering criteria:

Compliance and Certification Alignment: Both components carry identical automotive-grade classification and AEC-Q101 qualification, ensuring compliance with automotive industry standards. Both maintain ROHS3 compliance and carry identical REACH and ECCN classifications.

Electrical Compatibility: The substitute component maintains the same 400 V DC reverse voltage rating, satisfying the primary voltage specification. The higher current rating of 30 A provides operational margin above the original 16 A specification, permitting use in circuits designed for the original component without current-related stress.

Thermal Performance: The substitute component extends the operating temperature range to -40°C to 175°C, encompassing the original -65°C to 150°C range at the upper boundary. This provides enhanced thermal margin in high-temperature applications.

Package and Mounting: Both components utilize through-hole mounting in TO-220-2 package configuration, ensuring mechanical and electrical compatibility with existing PCB layouts and thermal management solutions.

Performance Trade-offs: The substitute exhibits increased forward voltage drop (1.55 V at 30 A versus 1.3 V at 16 A) and extended reverse recovery time (100 ns versus 50 ns). These characteristics remain within fast recovery classification and do not preclude substitution in general-purpose rectification applications.

Frequently Asked Questions (FAQ)

Q: Can the STTH30R04DY directly replace the FESF16GTHE3_A/P in existing designs?

A: Yes. Both components share identical voltage ratings, automotive qualification, and package configuration. The substitute's higher current rating and extended temperature range provide operational compatibility without circuit modification.

Q: What is the significance of the higher current rating in the substitute part?

A: The STTH30R04DY is rated for 30 A average rectified current compared to the original 16 A rating. In applications operating at or below 16 A, this provides thermal and stress margin. The component operates safely at the original design current without derating.

Q: How do the forward voltage characteristics differ between these parts?

A: The original FESF16GTHE3_A/P exhibits 1.3 V forward voltage at 16 A. The substitute STTH30R04DY exhibits 1.55 V forward voltage at its rated 30 A. At the original 16 A operating point, the substitute's forward voltage will be lower than its rated specification, reducing power dissipation relative to the rated condition.

Q: Are there thermal management differences between these components?

A: Both components utilize identical TO-220-2 package configuration and mounting type. Thermal management solutions designed for the original component remain applicable to the substitute. The substitute's extended temperature range (-40°C to 175°C) provides enhanced margin in high-temperature environments.

Q: What is the impact of the longer reverse recovery time in the substitute?

A: The substitute exhibits 100 ns reverse recovery time compared to the original 50 ns. Both remain within fast recovery classification (≤ 500 ns). In general-purpose rectification applications, this difference does not impact functional performance. High-frequency switching applications should evaluate this parameter against specific circuit requirements.

Q: Do both components meet the same automotive standards?

A: Yes. Both components carry AEC-Q101 qualification and automotive-grade classification. Compliance with automotive industry standards is maintained across the substitution.

Q: Is the package footprint identical between these parts?

A: Both components utilize TO-220-2 package configuration with through-hole mounting. PCB layouts and thermal management hardware designed for the original component accommodate the substitute without modification.