Equivalent & Substitute Parts Reference for FESF8GTHE3_A/P

Part Overview

The Vishay General Semiconductor FESF8GTHE3_A/P is a fast recovery rectifier diode rated for 400 V and 8 A in a TO-220-2 Full Pack (Isolated Tab) package, designed for through-hole mounting. Its automotive grade, AEC-Q101 qualification, and ROHS3/REACH compliance make it suitable for demanding industrial and automotive rectification applications. Ensuring ongoing supply often requires identifying alternative or substitute part numbers with identical key parameters, form factor, and compliance due to changes in inventory, lifecycle status, or supply chain requirements.

Key Parameters

Parameter	FESF8GTHE3_A/P Value
Technology	Standard
Voltage - DC Reverse (Vr) (Max)	400 V
Current - Average Rectified (Io)	8A
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 8 A
Speed	Fast Recovery =< 500ns, > 200mA (Io)
Reverse Recovery Time (trr)	50 ns
Current - Reverse Leakage @ Vr	10 µA @ 400 V
Mounting Type	Through Hole
Package / Case	TO-220-2 Full Pack, Isolated Tab
Supplier Device Package	ITO-220AC
Operating Temperature - Junction	-55°C ~ 150°C
Automotive Grade / Qualification	Automotive / AEC-Q101
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitute part grouping is based strictly on the following allowed and matched parameters: technology (standard), maximum reverse voltage (400 V), average rectified current (8A), forward voltage at rated current (1.3 V @ 8 A), diode speed classification (fast recovery =< 500ns, >200mA Io), reverse recovery time (trr), reverse leakage current at rated voltage, through-hole mounting, TO-220-2 Full Pack (Isolated Tab) / ITO-220AC package, identical operating temperature range, RoHS3 compliance, and REACH unaffected status. Only parts that meet these criteria have been included as equivalents or substitutes.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Voltage - DC Reverse (Vr) (Max)	Current - Average Rectified (Io)	Voltage - Forward (Vf) (Max) @ If	Speed	Reverse Recovery Time (trr)	Current - Reverse Leakage @ Vr	Technology	Mounting Type	Package / Case	Supplier Device Package	Operating Temp - Junction	Automotive Grade / Qualification	RoHS Status	MSL	REACH Status
FESF8GTHE3_A/P	Vishay General Semiconductor	400 V	8A	1.3 V @ 8 A	Fast Recovery =< 500ns, >200mA (Io)	50 ns	10 µA @ 400 V	Standard	Through Hole	TO-220-2 Full Pack, Isolated Tab	ITO-220AC	-55°C ~ 150°C	Automotive / AEC-Q101	ROHS3	1 (Unlimited)	REACH Unaffected
DURF840	Littelfuse Inc.	400 V	8A	1.3 V @ 8 A	Fast Recovery =< 500ns, >200mA (Io)	45 ns	10 µA @ 400 V	Standard	Through Hole	TO-220-2 Full Pack, Isolated Tab	ITO-220AC	-55°C ~ 150°C	-	ROHS3	Not Applicable	REACH Unaffected
ER804F_T0_00001	Panjit International Inc.	400 V	8A	1.3 V @ 8 A	Fast Recovery =< 500ns, >200mA (Io)	35 ns	1 µA @ 400 V	Standard	Through Hole	TO-220-2 Full Pack, Isolated Tab	ITO-220AC	-55°C ~ 150°C	-	ROHS3	Not Applicable	REACH Unaffected
UF804F_T0_00001	Panjit International Inc.	400 V	8A	1.3 V @ 8 A	Fast Recovery =< 500ns, >200mA (Io)	50 ns	1 µA @ 400 V	Standard	Through Hole	TO-220-2 Full Pack, Isolated Tab	ITO-220AC	-55°C ~ 150°C	-	ROHS3	1 (Unlimited)	REACH Unaffected

Engineering Selection Recommendations

All listed substitute rectifier diodes share the same basic RoHS3 compliance and REACH unaffected status as the FESF8GTHE3_A/P. Parts with Automotive/AEC-Q101 qualification should be used where this grade is mandated. Selections can be made strictly based on required compliance and lifecycle status as provided.

Frequently Asked Questions (FAQ)

Q1: What are the primary criteria for substituting FESF8GTHE3_A/P with another diode?
A1: Substitute parts must match the following parameters: technology, maximum reverse voltage (400 V), average rectified current (8A), forward voltage (1.3 V @ 8 A), recovery speed (fast), reverse recovery time, reverse leakage current, through-hole mounting, identical package (TO-220-2 Full Pack, Isolated Tab / ITO-220AC), operating temperature range, and compliance (RoHS3, REACH).

Q2: Can substitute diodes be used interchangeably in all mechanical footprints?
A2: All listed substitutes utilize the TO-220-2 Full Pack, Isolated Tab mechanical footprint and the ITO-220AC device package. Mechanical compatibility is maintained.

Q3: Are all listed alternatives automotive qualified?
A3: Only the original Vishay FESF8GTHE3_A/P is specified with Automotive grade/AEC-Q101 qualification. Substitute parts do not list this qualification.

Q4: What compliance or environmental certifications are relevant when selecting a substitute?
A4: All parts listed are ROHS3 compliant and unaffected by REACH.

Q5: Are there differences in moisture sensitivity?
A5: Moisture Sensitivity Level (MSL) may vary; FESF8GTHE3_A/P and UF804F_T0_00001 are rated as MSL 1 (Unlimited). DURF840 and ER804F_T0_00001 specify "Not Applicable."

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