BYVB32-50HE3_A/I Equivalent & Substitute Parts

Part Overview

The BYVB32-50HE3_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 18 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 status. 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	Unit
Diode Configuration	1 Pair Common Cathode	—
Voltage - DC Reverse (Vr) (Max)	50	V
Current - Average Rectified (Io) (per Diode)	18	A
Voltage - Forward (Vf) (Max) @ If	1.15 @ 20 A	V
Reverse Recovery Time (trr)	25	ns
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Current - Reverse Leakage @ Vr	10 µA @ 50 V	µA
Operating Temperature - Junction	-65 to 150	°C
Technology	Standard	—
Grade	Automotive	—
Qualification	AEC-Q101	—
Package / Case	TO-263-3, D2PAK (2 Leads + Tab), TO-263AB	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the BYVB32-50HE3_A/I is determined by the following critical parameters:

Mandatory Compatibility Criteria:

Diode Configuration: 1 Pair Common Cathode
Package / Case: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
Mounting Type: Surface Mount
Voltage - DC Reverse (Vr) (Max): 50 V or higher
Current - Average Rectified (Io) (per Diode): 18 A or higher
Operating Temperature - Junction: -65°C to 150°C or wider range
Automotive Grade and AEC-Q101 Qualification

Substitute Categories:

Category 1: Parametric Equivalent (Identical Electrical Specifications) Parts that maintain identical voltage, current, and thermal specifications with the same package and configuration. These parts are direct functional replacements.

Category 2: Manufacturer Recommended Upgrade (Higher Voltage Rating) Parts that exceed the voltage specification while maintaining current capacity and package compatibility. These parts provide enhanced voltage margin and are suitable for applications requiring higher reverse voltage tolerance.

Category 3: Alternative Technology (Schottky Diode Array) Parts that employ different semiconductor technology (Schottky vs. Standard) with modified electrical characteristics. These parts require circuit-level evaluation due to differences in forward voltage drop and reverse leakage current.

Parameter Comparison

Parameter	BYVB32-50HE3_A/I	BYVB32-50-E3/81	BYVB32-200HM3/I	STPS20L60CGY-TR
Manufacturer	Vishay General Semiconductor	Vishay General Semiconductor	Vishay General Semiconductor	STMicroelectronics
Diode Configuration	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode	1 Pair Common Cathode
Technology	Standard	Standard	Standard	Schottky
Voltage - DC Reverse (Vr) (Max)	50 V	50 V	200 V	60 V
Current - Average Rectified (Io) (per Diode)	18 A	18 A	18 A	10 A
Voltage - Forward (Vf) (Max) @ If	1.15 V @ 20 A	1.15 V @ 20 A	1.15 V @ 20 A	600 mV @ 10 A
Reverse Recovery Time (trr)	25 ns	25 ns	25 ns	≤ 500 ns
Speed Classification	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA
Current - Reverse Leakage @ Vr	10 µA @ 50 V	10 µA @ 50 V	10 µA @ 200 V	350 µA @ 60 V
Operating Temperature - Junction	-65°C to 150°C	-65°C to 150°C	-65°C to 150°C	-40°C to 175°C
Grade	Automotive	Automotive	Automotive	Automotive
Qualification	AEC-Q101	AEC-Q101	AEC-Q101	AEC-Q101
Package / Case	TO-263-3, D2PAK	TO-263-3, D2PAK	TO-263-3, D2PAK	TO-263-3, D2PAK
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Last Time Buy	Last Time Buy	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

BYVB32-50-E3/81 (Parametric Equivalent)

The BYVB32-50-E3/81 is a parametric equivalent to the BYVB32-50HE3_A/I. Both parts share identical electrical specifications: 50 V reverse voltage, 18 A average rectified current, 1.15 V forward voltage at 20 A, and 25 ns reverse recovery time. Both are manufactured by Vishay General Semiconductor with automotive-grade qualification (AEC-Q101) and packaged in TO-263-3 D2PAK format. The BYVB32-50-E3/81 is designated as Last Time Buy status. This part provides direct functional replacement with no circuit modifications required.

BYVB32-200HM3/I (Manufacturer Recommended Upgrade)

The BYVB32-200HM3/I is a manufacturer-recommended substitute offering enhanced voltage rating at 200 V DC reverse voltage while maintaining 18 A average rectified current capacity. Electrical characteristics including forward voltage (1.15 V @ 20 A), reverse recovery time (25 ns), and reverse leakage current (10 µA @ 200 V) remain consistent with standard diode technology. The part is packaged in identical TO-263-3 D2PAK format with automotive-grade qualification (AEC-Q101). Product status is Active, ensuring long-term availability. This part is suitable for applications where higher voltage margin is beneficial or required.

STPS20L60CGY-TR (Alternative Technology - Schottky)

The STPS20L60CGY-TR is a Schottky diode array manufactured by STMicroelectronics with 60 V reverse voltage rating and 10 A average rectified current per diode. This part employs Schottky technology, resulting in lower forward voltage (600 mV @ 10 A) compared to standard diodes. The reverse leakage current is significantly higher at 350 µA @ 60 V. The part is packaged in TO-263-3 D2PAK format with automotive-grade qualification (AEC-Q101) and Active product status. Selection of this part requires circuit-level evaluation due to reduced current capacity (10 A vs. 18 A) and modified electrical characteristics inherent to Schottky technology.

Frequently Asked Questions (FAQ)

Q: Can BYVB32-50-E3/81 be used as a direct replacement for BYVB32-50HE3_A/I?

A: Yes. The BYVB32-50-E3/81 is a parametric equivalent with identical voltage (50 V), current (18 A), forward voltage (1.15 V @ 20 A), and reverse recovery time (25 ns) specifications. Both parts share the same TO-263-3 D2PAK package, diode configuration (1 Pair Common Cathode), and automotive-grade qualification (AEC-Q101). No circuit modifications are required.

Q: What is the primary difference between BYVB32-200HM3/I and BYVB32-50HE3_A/I?

A: The BYVB32-200HM3/I has a higher DC reverse voltage rating of 200 V compared to 50 V in the BYVB32-50HE3_A/I. All other electrical parameters remain identical: 18 A average rectified current, 1.15 V forward voltage at 20 A, 25 ns reverse recovery time, and standard diode technology. Both parts use the same TO-263-3 D2PAK package and automotive qualification.

Q: Can STPS20L60CGY-TR replace BYVB32-50HE3_A/I in all applications?

A: No. The STPS20L60CGY-TR has a reduced average rectified current rating of 10 A compared to 18 A in the BYVB32-50HE3_A/I. Additionally, the Schottky technology results in lower forward voltage (600 mV @ 10 A) and significantly higher reverse leakage current (350 µA @ 60 V). Circuit-level evaluation is required to confirm suitability for specific applications.

Q: Are all substitute parts automotive-qualified?

A: Yes. All substitute parts listed—BYVB32-50-E3/81, BYVB32-200HM3/I, and STPS20L60CGY-TR—are automotive-grade components with AEC-Q101 qualification. All parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level.

Q: What is the package compatibility between the main part and substitutes?

A: All parts use the TO-263-3 D2PAK (2 Leads + Tab) surface mount package. Pinout and footprint are identical, allowing direct PCB-level substitution without layout modifications.

Q: Why is BYVB32-50HE3_A/I designated as Last Time Buy?

A: Last Time Buy status indicates the manufacturer has discontinued production. Equivalent parts such as BYVB32-50-E3/81 (also Last Time Buy) or BYVB32-200HM3/I (Active status) should be evaluated for long-term design continuity.

Q: What is the difference between standard and Schottky diode technology in these parts?

A: Standard diodes (BYVB32 series) exhibit higher forward voltage (1.15 V @ 20 A) and lower reverse leakage current (10 µA @ 50 V). Schottky diodes (STPS20L60CGY-TR) have lower forward voltage (600 mV @ 10 A) but higher reverse leakage current (350 µA @ 60 V). Technology selection depends on circuit requirements for power dissipation and leakage tolerance.

Q: Can the higher voltage rating of BYVB32-200HM3/I cause issues in a 50 V application?

A: No. A higher voltage rating provides additional safety margin without adverse effects in lower voltage applications. The BYVB32-200HM3/I maintains identical current capacity (18 A) and forward voltage characteristics (1.15 V @ 20 A), making it suitable for 50 V circuit designs.

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