HS3B V7G Equivalent & Substitute Parts

Part Overview

The HS3B V7G is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 100 V DC reverse voltage and 3 A average rectified current in a surface mount DO-214AB (SMC) package. This part is discontinued at DiGi Electronics, necessitating identification of equivalent and substitute components for ongoing design requirements and procurement needs. Alternative parts must maintain electrical and mechanical compatibility within the specified parameter ranges.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	100	V
Current - Average Rectified (Io)	3	A
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Reverse Recovery Time (trr)	50	ns
Package / Case	DO-214AB, SMC	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-55 to 150	°C
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the HS3B V7G is determined by the following critical parameters:

Electrical Compatibility Requirements:

Voltage - DC Reverse (Vr) (Max): Must equal or exceed 100 V
Current - Average Rectified (Io): Must equal or exceed 3 A
Speed Classification: Must be Fast Recovery ≤ 500ns, > 200mA (Io)
Reverse Recovery Time (trr): Must be ≤ 50 ns
Operating Temperature Range: Must support -55°C to 150°C junction temperature

Mechanical Compatibility Requirements:

Package / Case: Must be DO-214AB, SMC
Mounting Type: Must be Surface Mount

Regulatory Compliance:

RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level: MSL 1 (Unlimited)

Substitute parts are classified into two categories: direct equivalents (identical electrical and mechanical specifications) and similar alternatives (meeting minimum electrical requirements with potential parameter variations).

Parameter Comparison

Parameter	HS3B V7G (Main)	HS3B (Direct)	CURC302-G (Similar)	U3B-M3/57T (Similar)
Manufacturer	Taiwan Semiconductor Corporation	Taiwan Semiconductor Corporation	Comchip Technology	Vishay General Semiconductor - Diodes Division
Voltage - DC Reverse (Vr) (Max)	100 V	100 V	100 V	100 V
Current - Average Rectified (Io)	3 A	3 A	3 A	2 A
Voltage - Forward (Vf) (Max) @ If	—	1 V @ 3 A	1 V @ 3 A	900 mV @ 3 A
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)
Reverse Recovery Time (trr)	50 ns	50 ns	50 ns	30 ns
Current - Reverse Leakage @ Vr	10 µA @ 100 V	10 µA @ 100 V	5 µA @ 100 V	10 µA @ 100 V
Capacitance @ Vr, F	80 pF @ 4V, 1MHz	80 pF @ 4V, 1MHz	—	25 pF @ 4V, 1MHz
Package / Case	DO-214AB, SMC	DO-214AB, SMC	DO-214AB, SMC	DO-214AB, SMC
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Operating Temperature - Junction	-55 to 150°C	-55 to 150°C	Max 150°C	-55 to 150°C
Product Status	Discontinued at DiGi Electronics	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Direct Equivalent (Recommended Primary Choice):

The HS3B from Taiwan Semiconductor Corporation is the direct equivalent to the HS3B V7G. This part maintains identical electrical specifications (100 V, 3 A, 50 ns reverse recovery time) and mechanical compatibility (DO-214AB SMC package). The HS3B is currently in active product status with 1034 pieces in stock, providing immediate availability. All regulatory compliance certifications (ROHS3, MSL 1) are maintained. This part is the preferred substitution for direct replacement applications.

Similar Alternatives (Secondary Choices):

The CURC302-G from Comchip Technology meets all critical electrical parameters (100 V, 3 A, 50 ns reverse recovery time) and package requirements (DO-214AB SMC). This part is active with 687 pieces in stock. The CURC302-G exhibits lower reverse leakage current (5 µA versus 10 µA), which may provide performance benefits in certain applications. Capacitance data is not provided for this part. Operating temperature specification is listed as maximum 150°C without lower bound specification.

The U3B-M3/57T from Vishay General Semiconductor - Diodes Division is a similar alternative with the same voltage rating (100 V) and package (DO-214AB SMC). This part has a reduced current rating of 2 A, which is below the 3 A requirement of the main part. The U3B-M3/57T features improved reverse recovery time (30 ns versus 50 ns) and lower forward voltage (900 mV versus 1 V at 3 A). This part is suitable only for applications where the 2 A current rating is sufficient. The U3B-M3/57T is active with 832 pieces in stock.

All substitute parts maintain ROHS3 compliance and MSL 1 rating, ensuring compatibility with standard manufacturing and storage requirements.

Frequently Asked Questions (FAQ)

Q: Can the HS3B be used as a direct replacement for the HS3B V7G?

A: Yes. The HS3B is a direct equivalent with identical electrical specifications (100 V, 3 A, 50 ns reverse recovery time) and mechanical compatibility (DO-214AB SMC package). Both parts are ROHS3 compliant with MSL 1 rating. The HS3B is currently in active production status.

Q: What is the difference between the HS3B and CURC302-G?

A: Both parts share identical voltage (100 V), current (3 A), reverse recovery time (50 ns), and package specifications (DO-214AB SMC). The CURC302-G has lower reverse leakage current (5 µA versus 10 µA at 100 V). Capacitance data is not available for the CURC302-G. Operating temperature specification for the CURC302-G is listed as maximum 150°C without lower bound specification, whereas the HS3B specifies -55°C to 150°C.

Q: Can the U3B-M3/57T replace the HS3B V7G?

A: The U3B-M3/57T meets voltage (100 V) and package (DO-214AB SMC) requirements but has a reduced current rating of 2 A compared to the 3 A requirement. This part is suitable only for applications where the maximum current demand does not exceed 2 A. The U3B-M3/57T offers improved reverse recovery time (30 ns) and lower forward voltage characteristics.

Q: Are all substitute parts available in the same packaging format?

A: All substitute parts use the DO-214AB (SMC) surface mount package, ensuring mechanical compatibility with the original HS3B V7G footprint. The HS3B is supplied in standard packaging, while CURC302-G and U3B-M3/57T are supplied in Tape & Reel (TR) format. Tape & Reel packaging is standard for high-volume surface mount assembly operations.

Q: Do all substitute parts meet the same regulatory requirements?

A: Yes. All substitute parts (HS3B, CURC302-G, and U3B-M3/57T) are ROHS3 compliant and have MSL 1 (Unlimited) moisture sensitivity rating. All parts carry EAR99 ECCN classification and HTSUS code 8541.10.0080, matching the regulatory profile of the original HS3B V7G.

Q: What is the primary reason for substitution?

A: The HS3B V7G is discontinued at DiGi Electronics. The HS3B (direct equivalent) is the recommended substitution for ongoing procurement and design requirements. The CURC302-G and U3B-M3/57T are alternative sources for the same functional application, subject to the electrical parameter constraints noted above.

Q: How do reverse recovery time specifications affect substitution?

A: Reverse recovery time (trr) determines switching speed in rectifier applications. The HS3B V7G specifies 50 ns. The HS3B and CURC302-G maintain this specification. The U3B-M3/57T has a faster recovery time of 30 ns, which may reduce switching losses but does not affect compatibility with circuits designed for 50 ns or slower devices.

Q: What is the significance of the DO-214AB package designation?

A: DO-214AB is the surface mount equivalent of the DO-214 package family, commonly referred to as SMC (Surface Mount Case). This package is standard for general-purpose rectifier diodes and ensures mechanical and electrical compatibility across all listed substitute parts. The package supports automated surface mount assembly processes.

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