FEPB16ATHE3_A/P Equivalent & Substitute Parts

Part Overview

The FEPB16ATHE3_A/P 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 service 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/P 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 (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): Equal to or greater than 50 V
Current - Average Rectified (Io): Equal to or greater than 8 A per diode
Voltage - Forward (Vf): Within acceptable circuit operating margins
Reverse Recovery Time (trr): Fast Recovery classification maintained
Operating Temperature Range: Must encompass or exceed -55°C ~ 150°C

Substitute parts may employ different diode technologies (Standard or Schottky) provided all mandatory criteria and allowable parameter variations are satisfied.

Parameter Comparison

Parameter	FEPB16ATHE3_A/P (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
Technology	Standard	Standard	Schottky	Standard
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
Current - Reverse Leakage @ Vr	10 µA @ 50 V	10 µA @ 200 V	350 µA @ 60 V	6 µA @ 200 V
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
RoHS Status	ROHS3 Compliant	Not specified	ROHS3 Compliant	ROHS3 Compliant
Product Status	Last Time Buy	Active	Active	Active

Engineering Selection Recommendations

FEPB16DTHM3/I (Vishay General Semiconductor)

This part is the manufacturer-recommended substitute. It maintains identical diode configuration, package format, and automotive qualification. The FEPB16DTHM3/I provides enhanced voltage rating (200 V vs. 50 V) and increased current capacity (16 A vs. 8 A per diode), making it suitable for applications requiring higher performance margins. Product status is Active, ensuring long-term availability. Forward voltage characteristics remain consistent at 950 mV @ 8 A.

STTH1602CG-TR (STMicroelectronics)

This substitute offers 200 V voltage rating and 10 A current capacity in the same D2PAK package. The STTH1602CG-TR features improved reverse recovery time (26 ns vs. 35 ns) and lower reverse leakage current (6 µA @ 200 V). Product status is Active with ROHS3 compliance confirmed. Automotive qualification and AEC-Q101 certification are not specified for this part.

STPS20L60CGY-TR (STMicroelectronics)

This Schottky diode array provides 60 V voltage rating and 10 A current capacity. The STPS20L60CGY-TR features significantly lower forward voltage (600 mV @ 10 A) compared to the main part, resulting in reduced power dissipation. Schottky technology enables faster switching characteristics. Product status is Active with ROHS3 compliance and AEC-Q101 qualification confirmed. Operating temperature range extends to 175°C maximum. Higher reverse leakage current (350 µA @ 60 V) is characteristic of Schottky technology.

Frequently Asked Questions (FAQ)

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

A: Yes. Both parts share identical diode configuration (1 Pair Common Cathode), package format (TO-263-3, D2PAK), and automotive qualification (AEC-Q101). The FEPB16DTHM3/I provides higher voltage and current ratings, making it suitable for direct substitution in applications operating within the original 50 V / 8 A specifications.

Q: What is the primary difference between Standard and Schottky diode arrays?

A: Standard diodes (FEPB16ATHE3_A/P, FEPB16DTHM3/I, STTH1602CG-TR) exhibit higher forward voltage drop but lower reverse leakage current. Schottky diodes (STPS20L60CGY-TR) feature lower forward voltage drop, enabling reduced power dissipation, but exhibit higher reverse leakage current. Both technologies maintain Fast Recovery classification.

Q: Are all substitute parts automotive-qualified?

A: FEPB16DTHM3/I and STPS20L60CGY-TR carry AEC-Q101 qualification and automotive grade designation. STTH1602CG-TR does not specify automotive qualification or grade in the provided parameters.

Q: What is the impact of voltage rating differences on circuit design?

A: Substitute parts with higher voltage ratings (200 V vs. 50 V) provide increased safety margin and reliability in applications subject to voltage transients or overvoltage conditions. Circuit design remains compatible provided the application voltage does not exceed the original 50 V specification.

Q: How does reverse recovery time affect circuit performance?

A: Reverse recovery time (trr) determines switching speed and influences electromagnetic interference (EMI) characteristics. STTH1602CG-TR (26 ns) offers faster recovery than the main part (35 ns), potentially reducing switching losses and EMI in high-frequency applications.

Q: Can STPS20L60CGY-TR be used in all applications designed for FEPB16ATHE3_A/P?

A: STPS20L60CGY-TR is compatible with applications where the 60 V voltage rating and Schottky forward voltage characteristics (600 mV @ 10 A) are acceptable. The lower forward voltage reduces power dissipation but increases reverse leakage current. Circuit thermal and electrical design must accommodate these differences.

Q: What is the significance of the D2PAK package designation?

A: D2PAK (TO-263-3) is a surface mount package with 2 leads plus a thermal tab. All listed parts use identical package format, ensuring mechanical and thermal interface compatibility. PCB layout and thermal management design remain unchanged during substitution.

Q: Are there inventory considerations for part selection?

A: STTH1602CG-TR has the highest inventory availability (3630 Pcs), followed by STPS20L60CGY-TR (2200 Pcs) and FEPB16DTHM3/I (921 Pcs). Inventory levels may influence procurement decisions for high-volume production.

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