FEP16AT Equivalent & Substitute Parts

Part Overview

The FEP16AT is a diode array rectifier manufactured by onsemi, configured as a 1 Pair Common Cathode design with 50 V reverse voltage rating and 16 A average rectified current per diode. The device is packaged in TO-220-3 through-hole configuration and operates across a junction temperature range of -55°C to 150°C. The FEP16AT is classified as obsolete, necessitating identification of equivalent and substitute components for ongoing design support and procurement requirements. Substitute parts are selected based on matching or exceeding electrical performance parameters while maintaining compatible mechanical packaging and thermal characteristics.

Key Parameters

Parameter	FEP16AT	Unit
Diode Configuration	1 Pair Common Cathode	—
Voltage - DC Reverse (Vr) (Max)	50	V
Current - Average Rectified (Io) (per Diode)	16	A
Voltage - Forward (Vf) (Max) @ If	950 mV @ 8 A	mV @ A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Reverse Recovery Time (trr)	35	ns
Current - Reverse Leakage @ Vr	10 µA @ 50 V	µA @ V
Operating Temperature - Junction	-55 to 150	°C
Mounting Type	Through Hole	—
Package / Case	TO-220-3	—
Technology	Standard	—

Substitute Part Grouping Explanation

Substitute parts for the FEP16AT are categorized based on electrical parameter compatibility and mechanical interchangeability. The primary substitution criteria are:

Critical Parameters for Substitution:

Diode Configuration: 1 Pair Common Cathode (pin-compatible)
Package / Case: TO-220-3 (mechanical compatibility)
Voltage - DC Reverse (Vr) (Max): Equal to or greater than 50 V
Current - Average Rectified (Io) (per Diode): Equal to or greater than 16 A
Mounting Type: Through Hole

Direct Equivalents maintain identical electrical specifications and are sourced from alternative manufacturers with active product status. These parts are pin-compatible replacements with no circuit redesign required.

Similar Substitutes provide equivalent or superior electrical performance with minor parameter variations. These parts maintain the same package and configuration but may have different forward voltage characteristics, reverse leakage specifications, or recovery time parameters. Selection depends on application-specific requirements for switching speed, thermal dissipation, and leakage current tolerance.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io (per Diode) [A]	Vf (Max) @ If [mV @ A]	trr [ns]	Ir @ Vr [µA @ V]	Tj (Min-Max) [°C]	Product Status	Package
FEP16AT	onsemi	50	16	950 @ 8	35	10 @ 50	-55 to 150	Obsolete	TO-220-3
FEP16AT-E3/45	Vishay General Semiconductor - Diodes Division	50	16	950 @ 8	35	10 @ 50	-55 to 150	Active	TO-220-3
GI2401-E3/45	Vishay General Semiconductor - Diodes Division	50	16	975 @ 8	35	50 @ 50	-65 to 150	Active	TO-220-3
SBR30A45CT	Diodes Incorporated	45	15	500 @ 15	—	500 @ 45	-65 to 150	Active	TO-220-3
SBRT30A45CT	Diodes Incorporated	45	15	510 @ 15	—	400 @ 45	-55 to 150	Active	TO-220-3
SF2001GHC0G	Taiwan Semiconductor Corporation	50	20	975 @ 10	35	5 @ 50	-55 to 150	Active	TO-220-3
STTH1602CT	STMicroelectronics	200	10	1100 @ 8	26	6 @ 200	—	Active	TO-220-3

Engineering Selection Recommendations

FEP16AT-E3/45 is the primary direct equivalent substitute. This part is manufactured by Vishay General Semiconductor - Diodes Division and maintains identical electrical specifications to the FEP16AT across all critical parameters: 50 V reverse voltage, 16 A average rectified current, 950 mV forward voltage at 8 A, and 35 ns reverse recovery time. The device is active in production status with RoHS3 compliance and REACH unaffected designation. This part provides seamless interchangeability without circuit modification.

GI2401-E3/45 is an active substitute from Vishay General Semiconductor - Diodes Division. It matches the 50 V reverse voltage and 16 A current rating with identical recovery time. Forward voltage is marginally higher at 975 mV versus 950 mV, and reverse leakage is elevated at 50 µA compared to 10 µA. Operating temperature range extends to -65°C minimum. This part is suitable for applications where the slightly higher forward voltage and leakage current are acceptable.

SF2001GHC0G is an active substitute from Taiwan Semiconductor Corporation with enhanced current rating of 20 A per diode, exceeding the FEP16AT requirement. Reverse voltage matches at 50 V with identical 35 ns recovery time. Forward voltage is 975 mV at 10 A, and reverse leakage is superior at 5 µA. This device carries AEC-Q101 automotive qualification and RoHS3 compliance. Selection is appropriate for applications requiring higher current capacity or automotive-grade reliability.

SBR30A45CT and SBRT30A45CT are active substitutes from Diodes Incorporated utilizing Super Barrier technology. Both devices operate at 45 V reverse voltage and 15 A current, representing a reduction from the FEP16AT specifications. Forward voltage is significantly lower at 500-510 mV, providing improved efficiency. These parts are suitable only for applications where the lower voltage and current ratings are acceptable and where the reduced forward voltage drop provides circuit benefit.

STTH1602CT is an active substitute from STMicroelectronics with elevated 200 V reverse voltage rating. Current rating is reduced to 10 A per diode. Forward voltage is higher at 1.1 V, and reverse recovery time is faster at 26 ns. This part is suitable for high-voltage applications but represents a current derating and is not recommended for direct replacement in circuits designed for 16 A operation.

Frequently Asked Questions (FAQ)

Q: Can FEP16AT-E3/45 be used as a direct replacement for FEP16AT?

A: Yes. FEP16AT-E3/45 is a direct equivalent with identical electrical specifications and TO-220-3 packaging. No circuit modification is required. The part is pin-compatible and maintains the same 50 V reverse voltage, 16 A current rating, and 950 mV forward voltage characteristics.

Q: What is the difference between FEP16AT-E3/45 and GI2401-E3/45?

A: Both parts are manufactured by Vishay and maintain 50 V reverse voltage and 16 A current ratings. GI2401-E3/45 has marginally higher forward voltage (975 mV versus 950 mV) and elevated reverse leakage current (50 µA versus 10 µA). Operating temperature minimum extends to -65°C. Selection depends on application tolerance for these parameter variations.

Q: Why are SBR30A45CT and SBRT30A45CT listed as substitutes if they have lower voltage and current ratings?

A: These parts are listed as available substitutes but represent parameter reductions. SBR30A45CT and SBRT30A45CT operate at 45 V and 15 A, below the FEP16AT specifications. They are suitable only for applications where these lower ratings are acceptable. The primary advantage is significantly reduced forward voltage (500-510 mV), which may benefit specific circuit designs.

Q: Is SF2001GHC0G suitable for direct replacement?

A: SF2001GHC0G is suitable for applications where the enhanced 20 A current rating and automotive qualification are beneficial. The device maintains 50 V reverse voltage and 35 ns recovery time. Forward voltage is 975 mV at 10 A. This part is appropriate for designs requiring higher current capacity or automotive-grade reliability.

Q: What is the significance of the TO-220-3 package specification?

A: TO-220-3 is the mechanical package format that determines physical dimensions, pin configuration, and thermal characteristics. All listed substitute parts maintain TO-220-3 packaging, ensuring mechanical interchangeability and identical mounting requirements. This package format is through-hole technology suitable for PCB insertion and wave soldering.

Q: Can STTH1602CT replace FEP16AT in all applications?

A: STTH1602CT is not recommended as a direct replacement. While it maintains TO-220-3 packaging and through-hole mounting, the current rating is reduced to 10 A per diode, below the FEP16AT specification of 16 A. The elevated 200 V reverse voltage rating is unnecessary for 50 V applications. This part is suitable only for high-voltage applications where current derating is acceptable.

Q: What compliance certifications are relevant for substitute selection?

A: FEP16AT-E3/45, GI2401-E3/45, SBR30A45CT, SBRT30A45CT, SF2001GHC0G, and STTH1602CT all carry RoHS3 compliance and REACH unaffected designation. SF2001GHC0G additionally carries AEC-Q101 automotive qualification. These certifications ensure environmental compliance and supply chain continuity for regulated applications.

Q: How does reverse recovery time affect substitute selection?

A: Reverse recovery time (trr) determines switching speed and is critical for high-frequency applications. FEP16AT specifies 35 ns. FEP16AT-E3/45 and GI2401-E3/45 match this specification. SF2001GHC0G also provides 35 ns. STTH1602CT offers faster recovery at 26 ns. SBR30A45CT and SBRT30A45CT do not specify trr but are classified as Fast Recovery and Standard Recovery respectively. Selection depends on application switching frequency requirements.

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