FEPB16ATHE3_A/I Equivalent & Substitute Parts

Part Overview

The FEPB16ATHE3_A/I is a general-purpose diode array manufactured by Vishay General Semiconductor - Diodes Division. This component features a 1 Pair Common Cathode configuration rated for 50 V DC reverse voltage and 8 A average rectified current per diode. The device is packaged in TO-263-3 (D2PAK) surface mount format with automotive-grade qualification (AEC-Q101).

This part is designated as Last Time Buy, indicating discontinued production. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for ongoing production and field support applications.

Key Parameters

Parameter	Value
Diode Configuration	1 Pair Common Cathode
Voltage - DC Reverse (Vr) (Max)	50 V
Current - Average Rectified (Io) (per Diode)	8 A
Voltage - Forward (Vf) (Max) @ If	950 mV @ 8 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)
Reverse Recovery Time (trr)	35 ns
Operating Temperature - Junction	-55°C ~ 150°C
Package / Case	TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
Grade	Automotive
Qualification	AEC-Q101
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the FEPB16ATHE3_A/I is determined by the following critical parameters:

Mandatory Compatibility Criteria:

Diode Configuration: 1 Pair Common Cathode (electrical pinout compatibility)
Package / Case: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB (mechanical and thermal interface)
Mounting Type: Surface Mount (assembly process compatibility)
Automotive Grade and AEC-Q101 Qualification (quality and reliability standards)

Allowable Parameter Variations:

Voltage - DC Reverse (Vr): Substitute parts must equal or exceed 50 V minimum
Current - Average Rectified (Io): Substitute parts must equal or exceed 8 A minimum
Voltage - Forward (Vf): Variations acceptable within circuit design margins
Reverse Recovery Time (trr): Variations acceptable for fast recovery technology
Operating Temperature Range: Substitute parts must support minimum -55°C ~ 150°C range

Substitute parts listed below meet all mandatory criteria and provide equal or enhanced electrical performance within the specified parameter ranges.

Parameter Comparison

Parameter	FEPB16ATHE3_A/I (Main)	FEPB16DTHM3/I	STPS20L60CGY-TR	STTH1602CG-TR
Manufacturer	Vishay General Semiconductor	Vishay General Semiconductor	STMicroelectronics	STMicroelectronics
Diode Configuration	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode
Voltage - DC Reverse (Vr) (Max)	50 V	200 V	60 V	200 V
Current - Average Rectified (Io) (per Diode)	8 A	16 A	10 A	10 A
Voltage - Forward (Vf) (Max) @ If	950 mV @ 8 A	950 mV @ 8 A	600 mV @ 10 A	1.1 V @ 8 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)
Reverse Recovery Time (trr)	35 ns	35 ns	Not specified	26 ns
Operating Temperature - Junction	-55°C ~ 150°C	-55°C ~ 150°C	-40°C ~ 175°C	Max 175°C
Package / Case	TO-263-3, D2PAK	TO-263-3, D2PAK	TO-263-3, D2PAK	TO-263-3, D2PAK
Grade	Automotive	Automotive	Automotive	Not specified
Qualification	AEC-Q101	AEC-Q101	AEC-Q101	Not specified
Product Status	Last Time Buy	Active	Active	Active
RoHS Status	ROHS3 Compliant	Not specified	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

FEPB16DTHM3/I (Vishay General Semiconductor)

This part is the manufacturer-recommended substitute from Vishay. It maintains identical diode configuration, package format, and forward voltage characteristics. The FEPB16DTHM3/I provides enhanced voltage rating (200 V vs. 50 V) and doubled current capacity (16 A vs. 8 A per diode). Both parts carry automotive grade qualification and AEC-Q101 certification. Product status is Active, ensuring long-term availability. This substitute is optimal for direct replacement in applications where higher voltage and current margins are acceptable.

STPS20L60CGY-TR (STMicroelectronics)

This Schottky diode array substitute meets all mandatory compatibility criteria with identical package and configuration. The STPS20L60CGY-TR provides 60 V voltage rating and 10 A current capacity, both exceeding the original specification. Schottky technology delivers significantly lower forward voltage (600 mV @ 10 A vs. 950 mV @ 8 A), reducing power dissipation. The part carries automotive grade and AEC-Q101 qualification with Active product status. Selection of this substitute is appropriate for applications prioritizing thermal efficiency and where Schottky diode characteristics are compatible with circuit design.

STTH1602CG-TR (STMicroelectronics)

This standard recovery diode array substitute provides 200 V voltage rating and 10 A current capacity, both exceeding original specifications. The STTH1602CG-TR maintains identical package and configuration with fast recovery technology. Reverse recovery time is superior (26 ns vs. 35 ns). Product status is Active with ROHS3 compliance. This substitute is suitable for applications requiring higher voltage margins and improved switching performance. Note: Automotive grade and AEC-Q101 qualification status not specified in available data.

Frequently Asked Questions (FAQ)

Q: Can FEPB16DTHM3/I be used as a direct replacement for FEPB16ATHE3_A/I?

A: Yes. Both parts share identical diode configuration (1 Pair Common Cathode), package format (TO-263-3, D2PAK), forward voltage characteristics (950 mV @ 8 A), and automotive qualifications (AEC-Q101). The FEPB16DTHM3/I provides higher voltage and current ratings, making it a compatible upgrade. No circuit modifications are required.

Q: What is the primary difference between the Vishay and STMicroelectronics substitutes?

A: The Vishay FEPB16DTHM3/I uses standard recovery diode technology with 950 mV forward voltage. The STMicroelectronics STPS20L60CGY-TR uses Schottky technology with 600 mV forward voltage, reducing power dissipation. The STTH1602CG-TR uses standard recovery technology with 1.1 V forward voltage. Technology selection depends on circuit requirements for switching speed and thermal performance.

Q: Are all substitute parts automotive-qualified?

A: FEPB16DTHM3/I and STPS20L60CGY-TR carry automotive grade designation and AEC-Q101 qualification. STTH1602CG-TR automotive qualification status is not specified in available documentation. Verification with the manufacturer is required if automotive qualification is a mandatory design requirement.

Q: What is the impact of higher voltage ratings in substitute parts?

A: Substitute parts with higher voltage ratings (200 V vs. 50 V) provide increased design margin and protection against voltage transients. No negative impact occurs in applications operating below the original 50 V specification. Circuit performance remains unchanged when operating within the original voltage range.

Q: Can these substitutes be used interchangeably in the same circuit?

A: All substitute parts maintain identical pinout and package format, enabling mechanical interchangeability. However, electrical performance differs due to technology variations (standard vs. Schottky) and forward voltage characteristics. Circuit validation is necessary when switching between standard and Schottky technologies to confirm compatibility with specific application requirements.

Q: What is the significance of the Last Time Buy status for the original part?

A: Last Time Buy designation indicates the FEPB16ATHE3_A/I is no longer in production. Existing inventory is limited. Transition to an active substitute part is necessary for ongoing production and future component procurement. The listed substitutes are all Active status parts with established supply chains.

Q: How do reverse recovery time differences affect circuit performance?

A: Reverse recovery time (trr) affects switching speed and electromagnetic interference characteristics. The STTH1602CG-TR (26 ns) provides faster recovery than the original (35 ns), improving switching efficiency. The FEPB16DTHM3/I matches the original specification (35 ns). Differences are significant only in high-frequency switching applications above 100 kHz.

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