HER205-AP Equivalent & Substitute Parts

Part Overview

The HER205-AP is a general-purpose rectifier diode rated for 400 V DC reverse voltage and 2 A average rectified current in a through-hole DO-15 package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The HER205-AP features fast recovery characteristics with a 50 ns reverse recovery time, suitable for standard rectification applications requiring moderate switching speeds.

Key Parameters

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

Substitute Part Grouping Explanation

Substitute parts for the HER205-AP are grouped based on electrical parameter compatibility within the 400 V / 2 A rectifier diode category. The primary substitution criteria are:

Critical Parameters (Must Match):

Voltage - DC Reverse (Vr) (Max): 400 V
Current - Average Rectified (Io): 2 A
Voltage - Forward (Vf) (Max) @ If: 1.3 V @ 2 A
Mounting Type: Through Hole
Package / Case: DO-204AC, DO-15, Axial

Secondary Parameters (Allow Variation):

Reverse Recovery Time (trr): 35 ns to 150 ns
Current - Reverse Leakage @ Vr: 1 µA to 5 µA @ 400 V
Capacitance @ Vr, F: 10 pF to 50 pF @ 4V, 1MHz

All substitute parts maintain identical voltage and current ratings, forward voltage characteristics, and through-hole axial mounting configuration. Variations in reverse recovery time and junction capacitance reflect different semiconductor process technologies but do not affect functional compatibility in standard rectification circuits.

Parameter Comparison

Part Number	Manufacturer	Product Status	Vr (Max)	Io	Vf (Max) @ If	trr (ns)	Ir @ Vr	C @ Vr, F	Package
HER205-AP	Micro Commercial Co	Obsolete	400 V	2 A	1.3 V @ 2 A	50	5 µA @ 400 V	50 pF @ 4V, 1MHz	DO-15
HER205G-AP	Micro Commercial Co	Active	400 V	2 A	1.3 V @ 2 A	50	5 µA @ 400 V	50 pF @ 4V, 1MHz	DO-15
FR204GP-AP	Micro Commercial Co	Active	400 V	2 A	1.3 V @ 2 A	150	5 µA @ 400 V	40 pF @ 4V, 1MHz	DO-15
FR204G	Taiwan Semiconductor Corporation	Active	400 V	2 A	1.3 V @ 2 A	150	5 µA @ 400 V	10 pF @ 4V, 1MHz	DO-204AC (DO-15)
FR204G A0G	Taiwan Semiconductor Corporation	Active	400 V	2 A	1.3 V @ 2 A	150	5 µA @ 400 V	10 pF @ 4V, 1MHz	DO-204AC (DO-15)
HER205G A0G	Taiwan Semiconductor Corporation	Active	400 V	2 A	1.3 V @ 2 A	50	5 µA @ 400 V	35 pF @ 4V, 1MHz	DO-204AC (DO-15)
SF26G A0G	Taiwan Semiconductor Corporation	Active	400 V	2 A	1.3 V @ 2 A	35	5 µA @ 400 V	20 pF @ 4V, 1MHz	DO-204AC (DO-15)
SF26GHA0G	Taiwan Semiconductor Corporation	Active	400 V	2 A	1.3 V @ 2 A	35	5 µA @ 400 V	20 pF @ 4V, 1MHz	DO-204AC (DO-15)
SF2L6G A0G	Taiwan Semiconductor Corporation	Active	400 V	2 A	1.3 V @ 2 A	35	1 µA @ 400 V	20 pF @ 4V, 1MHz	DO-204AC (DO-15)
SF2L6GHA0G	Taiwan Semiconductor Corporation	Active	400 V	2 A	1.3 V @ 2 A	35	1 µA @ 400 V	20 pF @ 4V, 1MHz	DO-204AC (DO-15)

Engineering Selection Recommendations

Direct Replacement (Identical Electrical and Physical Characteristics):

HER205G-AP is the primary direct replacement for HER205-AP. Both parts are manufactured by Micro Commercial Co, share identical electrical specifications including 50 ns reverse recovery time, and are packaged in DO-15. HER205G-AP is active product status, ensuring long-term availability and supply chain continuity.

Active Equivalent Parts (Electrical Compatibility with Alternate Packaging):

HER205G A0G (Taiwan Semiconductor Corporation) provides electrical equivalence with identical reverse recovery time (50 ns) and forward voltage characteristics. This part is active and ROHS3 compliant. The DO-204AC (DO-15) package designation indicates mechanical compatibility with standard through-hole axial mounting.

Parametric Equivalents (Functional Compatibility with Performance Variations):

FR204GP-AP, FR204G, and FR204G A0G are parametric equivalents with extended reverse recovery time (150 ns) and reduced junction capacitance (10-40 pF). These parts maintain voltage and current ratings and are suitable for applications where slower switching characteristics are acceptable.

SF26G A0G, SF26GHA0G, SF2L6G A0G, and SF2L6GHA0G offer faster switching performance with 35 ns reverse recovery time and lower junction capacitance (20 pF). SF2L6G A0G and SF2L6GHA0G feature reduced reverse leakage current (1 µA) compared to the original specification (5 µA). SF26GHA0G and SF2L6GHA0G carry automotive-grade qualification (AEC-Q101) for applications requiring automotive reliability standards.

All substitute parts are ROHS3 compliant and maintain operating temperature range of -55°C to 150°C junction temperature.

Frequently Asked Questions (FAQ)

Q: Can HER205G-AP be used as a direct replacement for HER205-AP?

A: Yes. HER205G-AP is manufactured by the same supplier (Micro Commercial Co) and maintains identical electrical specifications, forward voltage characteristics, reverse recovery time (50 ns), and DO-15 package configuration. The primary difference is product status: HER205G-AP is active, whereas HER205-AP is obsolete.

Q: What is the difference between HER205G-AP and HER205G A0G?

A: Both parts share identical electrical specifications and reverse recovery time (50 ns). HER205G-AP is packaged by Micro Commercial Co in standard DO-15, while HER205G A0G is manufactured by Taiwan Semiconductor Corporation in DO-204AC (DO-15) designation. Both are through-hole axial packages and are mechanically compatible.

Q: Can FR204G be substituted for HER205-AP?

A: FR204G is a parametric equivalent with identical voltage (400 V) and current (2 A) ratings and forward voltage (1.3 V @ 2 A). The primary difference is reverse recovery time: FR204G has 150 ns compared to HER205-AP's 50 ns. This slower switching characteristic is acceptable in standard rectification applications but may affect performance in high-frequency switching circuits.

Q: What is the advantage of SF26G A0G or SF2L6G A0G over HER205-AP?

A: SF26G A0G and SF2L6G A0G offer faster reverse recovery time (35 ns) and lower junction capacitance (20 pF), resulting in improved switching performance. SF2L6G A0G additionally features reduced reverse leakage current (1 µA versus 5 µA), providing lower standby power dissipation. Both maintain identical voltage and current ratings.

Q: Are automotive-grade versions available?

A: Yes. SF26GHA0G and SF2L6GHA0G are automotive-grade equivalents with AEC-Q101 qualification. These parts maintain identical electrical specifications to their non-automotive counterparts (SF26G A0G and SF2L6G A0G respectively) and are suitable for automotive applications requiring automotive reliability standards.

Q: Do all substitute parts use the same package?

A: All substitute parts use through-hole axial mounting in DO-15 or DO-204AC (DO-15) package designations. These designations refer to the same physical package form factor and are mechanically interchangeable. Packaging format (Tape & Box, Cut Tape, or bulk) varies by supplier but does not affect electrical or mechanical compatibility.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant and carry Moisture Sensitivity Level (MSL) 1 (Unlimited), indicating no moisture sensitivity requirements during storage and handling.

Q: What is the reverse leakage current specification for SF2L6G A0G?

A: SF2L6G A0G and SF2L6GHA0G specify 1 µA reverse leakage current at 400 V, compared to 5 µA for HER205-AP and most other equivalents. This lower leakage reduces standby power dissipation in applications with sustained reverse bias conditions.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message