HER205G A0G Equivalent & Substitute Parts

Part Overview

The HER205G A0G is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 400 V DC reverse voltage and 2 A average rectified current in a DO-204AC (DO-15) through-hole axial package. This component is classified as a fast recovery diode with a reverse recovery time of 50 ns and operates across a junction temperature range of -55°C to 150°C. The part is Active in product status, RoHS3 compliant, and carries unlimited moisture sensitivity level (MSL 1).

Equivalent and substitute parts are identified when component availability is limited, supply chain disruptions occur, or design flexibility is required while maintaining electrical and mechanical compatibility within specified parameter tolerances.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	400	V
Current - Average Rectified (Io)	2	A
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 2 A	V
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	-
Reverse Recovery Time (trr)	50	ns
Current - Reverse Leakage @ Vr	5 µA @ 400 V	µA
Mounting Type	Through Hole	-
Package / Case	DO-204AC, DO-15, Axial	-
Operating Temperature - Junction	-55 to 150	°C
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitution relationships for the HER205G A0G are established based on the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): 400 V minimum
Current - Average Rectified (Io): 2 A minimum
Package / Case: DO-204AC, DO-15, or Axial equivalent
Mounting Type: Through Hole
Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)

Parametric Equivalent Classification: Parts meeting all primary criteria with identical or superior electrical performance characteristics are classified as parametric equivalents. The SF26G A0G qualifies as a parametric equivalent, offering improved reverse recovery time (35 ns versus 50 ns) and reduced capacitance (20 pF versus 35 pF) while maintaining identical voltage, current, and package specifications.

Direct Manufacturer Equivalent Classification: The EGP20G from Fairchild Semiconductor is classified as a direct manufacturer equivalent. It meets all primary substitution criteria with 400 V reverse voltage, 2 A current rating, and identical DO-15 package configuration. Forward voltage is marginally lower (1.25 V versus 1.3 V), and operating temperature range extends to -65°C.

Similar Part Classification: Parts designated as similar include 1N5060GP-E3/54, 1N5617GP-E3/54, GP15G-E3/54, and RGP15G-E3/54. These components share the 400 V reverse voltage rating and DO-204AC package but differ in current rating (1 A or 1.5 A versus 2 A) or recovery time characteristics. These parts are suitable for applications where current requirements are lower than the primary specification.

Parameter Comparison

Parameter	HER205G A0G	SF26G A0G	EGP20G	1N5060GP-E3/54	1N5617GP-E3/54	GP15G-E3/54	RGP15G-E3/54
Manufacturer	Taiwan Semiconductor	Taiwan Semiconductor	Fairchild Semiconductor	Vishay General Semiconductor	Vishay General Semiconductor	Vishay General Semiconductor	Vishay General Semiconductor
Voltage - DC Reverse (Vr) (Max)	400 V	400 V	400 V	400 V	400 V	400 V	400 V
Current - Average Rectified (Io)	2 A	2 A	2 A	1 A	1 A	1.5 A	1.5 A
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 2 A	1.3 V @ 2 A	1.25 V @ 2 A	1.2 V @ 1 A	1.2 V @ 1 A	1.1 V @ 1.5 A	1.3 V @ 1.5 A
Speed Classification	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Standard Recovery >500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Standard Recovery >500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA
Reverse Recovery Time (trr)	50 ns	35 ns	50 ns	2 µs	150 ns	3.5 µs	150 ns
Current - Reverse Leakage @ Vr	5 µA @ 400 V	5 µA @ 400 V	5 µA @ 400 V	5 µA @ 400 V	500 nA @ 400 V	5 µA @ 400 V	5 µA @ 400 V
Capacitance @ Vr, F	35 pF @ 4V, 1MHz	20 pF @ 4V, 1MHz	45 pF @ 4V, 1MHz	15 pF @ 4V, 1MHz	25 pF @ 4V, 1MHz	Not specified	Not specified
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	DO-204AC, DO-15, Axial	DO-204AC, DO-15, Axial	DO-15, Axial	DO-204AC, DO-15, Axial	DO-204AC, DO-15, Axial	DO-204AC, DO-15, Axial	DO-204AC, DO-15, Axial
Operating Temperature - Junction	-55 to 150°C	-55 to 150°C	-65 to 150°C	-65 to 175°C	-65 to 175°C	-65 to 175°C	-65 to 175°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Parametric Equivalent - SF26G A0G: The SF26G A0G is suitable for direct substitution in applications requiring 400 V, 2 A rectification with fast recovery characteristics. This part offers improved reverse recovery time (35 ns) and lower capacitance (20 pF) compared to the HER205G A0G, making it advantageous in high-frequency switching applications. Both parts are ROHS3 compliant, Active in product status, and share identical operating temperature range. The SF26G A0G is available in Cut Tape packaging with 831 pieces in stock.

Direct Manufacturer Equivalent - EGP20G: The EGP20G from Fairchild Semiconductor provides full electrical compatibility with 400 V reverse voltage and 2 A current rating in a DO-15 package. This part exhibits marginally lower forward voltage (1.25 V versus 1.3 V) and extended operating temperature range (-65°C to 150°C). The EGP20G is Active in product status with 36,600 pieces in stock, providing superior availability. This part is suitable for applications where component availability and cost efficiency are primary considerations.

Similar Parts - 1N5060GP-E3/54, 1N5617GP-E3/54, GP15G-E3/54, RGP15G-E3/54: These Vishay General Semiconductor SUPERECTIFIER® series diodes are suitable for applications where current requirements are lower than 2 A. The 1N5060GP-E3/54 and 1N5617GP-E3/54 are rated for 1 A, while GP15G-E3/54 and RGP15G-E3/54 are rated for 1.5 A. All maintain 400 V reverse voltage rating and DO-204AC package compatibility. These parts are ROHS3 compliant and Active in product status. Selection among these similar parts depends on specific current requirements and recovery time characteristics of the application.

Frequently Asked Questions (FAQ)

Q: Can the SF26G A0G be used as a direct replacement for the HER205G A0G?

A: Yes. The SF26G A0G meets all primary substitution criteria with identical 400 V reverse voltage, 2 A current rating, and DO-204AC package configuration. The SF26G A0G offers improved reverse recovery time (35 ns versus 50 ns) and lower capacitance (20 pF versus 35 pF), making it suitable for direct substitution in all applications where the HER205G A0G is specified.

Q: What is the difference between the EGP20G and the HER205G A0G?

A: Both parts are rated for 400 V reverse voltage and 2 A average rectified current in DO-15 axial packages. The EGP20G is manufactured by Fairchild Semiconductor and exhibits lower forward voltage (1.25 V versus 1.3 V) and extended operating temperature range (-65°C to 150°C versus -55°C to 150°C). The EGP20G is suitable for applications requiring these enhanced specifications.

Q: Can the 1N5060GP-E3/54 replace the HER205G A0G?

A: The 1N5060GP-E3/54 is not a direct replacement. While it shares the 400 V reverse voltage rating and DO-204AC package, it is rated for only 1 A average rectified current compared to the 2 A rating of the HER205G A0G. This part is suitable only for applications where current requirements do not exceed 1 A.

Q: What are the key parameters that determine substitution compatibility?

A: Substitution compatibility is determined by: (1) Voltage - DC Reverse (Vr) (Max) of 400 V minimum, (2) Current - Average Rectified (Io) of 2 A minimum for direct equivalents, (3) Package / Case of DO-204AC, DO-15, or Axial configuration, (4) Mounting Type of Through Hole, and (5) Speed Classification of Fast Recovery ≤ 500ns for high-frequency applications.

Q: Are all substitute parts RoHS3 compliant?

A: The HER205G A0G, SF26G A0G, 1N5060GP-E3/54, 1N5617GP-E3/54, GP15G-E3/54, and RGP15G-E3/54 are all ROHS3 compliant. The EGP20G RoHS status is not specified in the provided data.

Q: What is the difference between fast recovery and standard recovery diodes?

A: Fast recovery diodes have reverse recovery time ≤ 500 ns and are suitable for high-frequency switching applications. Standard recovery diodes have reverse recovery time > 500 ns and are suitable for lower-frequency applications. The HER205G A0G is classified as fast recovery with 50 ns reverse recovery time.

Q: Can I use a 1.5 A rated diode in place of a 2 A rated diode?

A: No. The GP15G-E3/54 and RGP15G-E3/54 are rated for 1.5 A maximum average rectified current. Using these parts in applications requiring 2 A operation will result in component overstress and potential failure. These parts are suitable only for applications where current requirements do not exceed 1.5 A.

Q: What is the significance of reverse recovery time in diode selection?

A: Reverse recovery time (trr) determines how quickly a diode transitions from conducting to blocking state. Lower reverse recovery time reduces switching losses and electromagnetic interference in high-frequency applications. The HER205G A0G has 50 ns reverse recovery time, while the SF26G A0G has 35 ns, making the SF26G A0G more suitable for high-frequency switching circuits.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message