FESB16ATHE3_A/P Equivalent & Substitute Parts

Part Overview

The FESB16ATHE3_A/P is a general-purpose rectifier diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component is rated for 50 V DC reverse voltage and 16 A average rectified current in a TO-263AB (D2PAK) package. The device features fast recovery characteristics with a reverse recovery time of 35 ns and is qualified to AEC-Q101 automotive standards.

The FESB16ATHE3_A/P is currently in Last Time Buy status, indicating that production is being discontinued. Identification of equivalent and substitute parts is necessary to ensure design continuity and procurement availability for ongoing production requirements.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	50	V
Current - Average Rectified (Io)	16	A
Voltage - Forward (Vf) (Max) @ If	975 mV @ 16 A	mV
Reverse Recovery Time (trr)	35	ns
Current - Reverse Leakage @ Vr	10	µA @ 50 V
Package / Case	TO-263-3, D2PAK (2 Leads + Tab)	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-65°C ~ 150°C	°C
Grade	Automotive	—
Qualification	AEC-Q101	—
Technology	Standard	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the FESB16ATHE3_A/P is determined by the following critical parameters:

Mandatory Compatibility Criteria:

Package / Case: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
Mounting Type: Surface Mount
Current - Average Rectified (Io): Must support 16 A minimum
Voltage - DC Reverse (Vr) (Max): Must support 50 V minimum
Automotive Grade and AEC-Q101 Qualification

Substitution Logic:

Parts that meet or exceed the voltage and current ratings while maintaining the same package footprint and automotive qualification are considered functional equivalents. The FESB16DTHM3/I from Vishay provides identical current handling (16 A) with enhanced voltage rating (200 V), maintaining all automotive certifications and the same TO-263AB package. This part is in Active product status, ensuring long-term availability.

The STPS20L60CGY-TR from STMicroelectronics operates as a cross-technology substitute. While it employs Schottky technology rather than standard rectifier technology, it maintains the same TO-263AB package, automotive qualification, and AEC-Q101 certification. However, this part is configured as a diode array (1 Pair Common Cathode) with per-diode ratings of 10 A at 60 V, which differs from the single-diode configuration and current rating of the main part.

Parameter Comparison

Parameter	FESB16ATHE3_A/P	FESB16DTHM3/I	STPS20L60CGY-TR
Manufacturer	Vishay General Semiconductor	Vishay General Semiconductor	STMicroelectronics
Category	Diodes, Rectifiers	Diodes, Rectifiers	Diodes, Rectifiers
Voltage - DC Reverse (Vr) (Max)	50 V	200 V	60 V
Current - Average Rectified (Io)	16 A	16 A	10 A (per Diode)
Voltage - Forward (Vf) (Max) @ If	975 mV @ 16 A	975 mV @ 16 A	600 mV @ 10 A
Reverse Recovery Time (trr)	35 ns	35 ns	≤ 500 ns
Current - Reverse Leakage @ Vr	10 µA @ 50 V	10 µA @ 200 V	350 µA @ 60 V
Technology	Standard	Standard	Schottky
Diode Configuration	Single Diode	Single Diode	1 Pair Common Cathode
Package / Case	TO-263-3, D2PAK	TO-263-3, D2PAK	TO-263-3, D2PAK
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Operating Temperature - Junction	-65°C ~ 150°C	-65°C ~ 150°C	-40°C ~ 175°C
Grade	Automotive	Automotive	Automotive
Qualification	AEC-Q101	AEC-Q101	AEC-Q101
Product Status	Last Time Buy	Active	Active
RoHS Status	ROHS3 Compliant	Not specified	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitute: FESB16DTHM3/I

The FESB16DTHM3/I is the recommended direct substitute for the FESB16ATHE3_A/P. Both parts are manufactured by Vishay General Semiconductor and share identical electrical characteristics for forward voltage drop, reverse recovery time, and reverse leakage current. The FESB16DTHM3/I maintains the same 16 A current rating and TO-263AB package configuration. The higher voltage rating (200 V versus 50 V) provides design margin without introducing compatibility issues. Both parts carry Automotive grade designation and AEC-Q101 qualification. The FESB16DTHM3/I is in Active product status, ensuring sustained availability and supply chain continuity.

Alternative Substitute: STPS20L60CGY-TR

The STPS20L60CGY-TR from STMicroelectronics is available as an alternative cross-technology substitute. This part maintains the same TO-263AB package footprint and automotive qualification (AEC-Q101). However, design integration requires careful evaluation due to the following differences:

Schottky technology versus standard rectifier technology
Diode array configuration (1 Pair Common Cathode) versus single diode
Per-diode current rating of 10 A versus 16 A for the main part
Voltage rating of 60 V versus 50 V
Lower forward voltage drop (600 mV @ 10 A) and higher reverse leakage current (350 µA @ 60 V)

The STPS20L60CGY-TR is suitable only for applications where the circuit topology can accommodate a diode pair configuration and where the reduced current rating per diode element is acceptable.

Frequently Asked Questions (FAQ)

Q: Can the FESB16DTHM3/I be used as a direct replacement for the FESB16ATHE3_A/P?

A: Yes. The FESB16DTHM3/I is a direct functional substitute. Both parts share identical current ratings (16 A), forward voltage characteristics (975 mV @ 16 A), reverse recovery time (35 ns), and package configuration (TO-263AB). The higher voltage rating of the FESB16DTHM3/I (200 V versus 50 V) does not create compatibility issues and provides additional design margin. Both parts are Automotive grade with AEC-Q101 qualification.

Q: What are the key differences between the FESB16ATHE3_A/P and STPS20L60CGY-TR?

A: The primary differences are technology type, configuration, and current rating. The FESB16ATHE3_A/P is a single standard rectifier diode rated for 16 A. The STPS20L60CGY-TR is a Schottky diode array with two diodes in a common cathode configuration, each rated for 10 A. The STPS20L60CGY-TR features lower forward voltage drop (600 mV @ 10 A) but higher reverse leakage current (350 µA @ 60 V). Substitution requires circuit topology compatibility with a diode pair configuration.

Q: Are all substitute parts qualified to the same automotive standards?

A: Yes. Both the FESB16DTHM3/I and STPS20L60CGY-TR carry Automotive grade designation and AEC-Q101 qualification, matching the FESB16ATHE3_A/P. All three parts are suitable for automotive applications requiring these certifications.

Q: Why is the FESB16ATHE3_A/P in Last Time Buy status?

A: Last Time Buy status indicates that the manufacturer is discontinuing production of this part. Customers are advised to secure remaining inventory or transition to active substitute parts such as the FESB16DTHM3/I to ensure long-term supply chain continuity.

Q: Can the STPS20L60CGY-TR be used in any application where the FESB16ATHE3_A/P is currently used?

A: No. The STPS20L60CGY-TR requires circuit topology compatibility due to its diode array configuration and reduced per-diode current rating. Applications designed for a single 16 A diode cannot directly use a 10 A per-diode array without circuit redesign. Schottky technology also introduces different thermal and leakage characteristics that may affect circuit performance.

Q: What is the significance of the TO-263AB package for substitution?

A: The TO-263AB package (D2PAK with 2 Leads + Tab) defines the physical footprint and thermal characteristics. All substitute parts must use this identical package to ensure PCB compatibility without layout modifications. All three parts in this comparison maintain the TO-263AB package specification.

Q: Are there any RoHS compliance differences between the substitute parts?

A: The FESB16ATHE3_A/P and STPS20L60CGY-TR are both ROHS3 Compliant. The FESB16DTHM3/I RoHS status is not specified in the provided data. Verification of RoHS compliance for the FESB16DTHM3/I is recommended for applications with specific regulatory requirements.

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