HER206-AP Equivalent & Substitute Parts

Part Overview

The HER206-AP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 600 V DC reverse voltage and 2 A average rectified current in a DO-15 through-hole package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The HER206-AP features fast recovery characteristics with a reverse recovery time of 75 ns, suitable for standard rectification applications requiring moderate switching speeds.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	600 V
Current - Average Rectified (Io)	2 A
Voltage - Forward (Vf) (Max) @ If	1.7 V @ 2 A
Speed Classification	Fast Recovery ≤ 500 ns, > 200 mA (Io)
Reverse Recovery Time (trr)	75 ns
Current - Reverse Leakage @ Vr	5 µA @ 600 V
Package / Case	DO-204AC, DO-15, Axial
Mounting Type	Through Hole
Operating Temperature - Junction	-55°C ~ 150°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the HER206-AP is determined by strict equivalence across the following critical parameters:

Primary Equivalence Criteria:

Voltage - DC Reverse (Vr) (Max): 600 V
Current - Average Rectified (Io): 2 A
Voltage - Forward (Vf) (Max) @ If: 1.7 V @ 2 A
Package / Case: DO-204AC, DO-15, Axial (through-hole)
Operating Temperature - Junction: -55°C ~ 150°C
Speed Classification: Fast Recovery ≤ 500 ns, > 200 mA (Io)
Reverse Recovery Time (trr): 75 ns

Parametric Equivalent Parts maintain identical electrical specifications and package form factor, enabling direct replacement without circuit modification.

Similar Parts with higher current ratings (3 A) are listed for reference but operate under different electrical parameters and are not direct substitutes.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max)	Io	Vf (Max) @ If	trr	Speed	Product Status	Package
HER206-AP	Micro Commercial Co	600 V	2 A	1.7 V @ 2 A	75 ns	Fast Recovery ≤ 500 ns	Obsolete	DO-15
HER206G A0G	Taiwan Semiconductor Corporation	600 V	2 A	1.7 V @ 2 A	75 ns	Fast Recovery ≤ 500 ns	Active	DO-204AC (DO-15)
SF28G	Taiwan Semiconductor Corporation	600 V	2 A	1.7 V @ 2 A	35 ns	Fast Recovery ≤ 500 ns	Active	DO-204AC (DO-15)
SF28GHA0G	Taiwan Semiconductor Corporation	600 V	2 A	1.7 V @ 2 A	35 ns	Fast Recovery ≤ 500 ns	Active	DO-204AC (DO-15)
SF2L8G A0G	Taiwan Semiconductor Corporation	600 V	2 A	1.7 V @ 2 A	35 ns	Fast Recovery ≤ 500 ns	Active	DO-204AC (DO-15)
SF2L8GHA0G	Taiwan Semiconductor Corporation	600 V	2 A	1.7 V @ 2 A	35 ns	Fast Recovery ≤ 500 ns	Active	DO-204AC (DO-15)
3A60HB0G	Taiwan Semiconductor Corporation	600 V	3 A	1.1 V @ 3 A	Not specified	Standard Recovery > 500 ns	Active	DO-204AC (DO-15)

Engineering Selection Recommendations

Parametric Equivalent Substitutes (Direct Replacement):

The following parts are parametric equivalents to the HER206-AP and maintain identical electrical performance specifications:

HER206G A0G (Taiwan Semiconductor Corporation): Active product status with matching 600 V, 2 A, 1.7 V forward voltage, and 75 ns reverse recovery time. Identical fast recovery speed classification. ROHS3 compliant.
SF28G (Taiwan Semiconductor Corporation): Active product with 600 V, 2 A ratings and 1.7 V forward voltage. Improved reverse recovery time of 35 ns (faster than original 75 ns specification). Fast recovery speed classification. ROHS3 compliant. Available in Cut Tape packaging with high inventory (30,200 pcs).
SF28GHA0G (Taiwan Semiconductor Corporation): Active automotive-grade product (AEC-Q101 qualified) with identical electrical specifications to SF28G. Reverse recovery time of 35 ns. ROHS3 compliant.
SF2L8G A0G (Taiwan Semiconductor Corporation): Active product with 600 V, 2 A ratings, 1.7 V forward voltage, and 35 ns reverse recovery time. Improved reverse leakage current specification of 1 µA @ 600 V (versus 5 µA in original). ROHS3 compliant.
SF2L8GHA0G (Taiwan Semiconductor Corporation): Active automotive-grade product (AEC-Q101 qualified) with identical specifications to SF2L8G A0G. Reverse recovery time of 35 ns and 1 µA reverse leakage current. ROHS3 compliant.

Non-Equivalent Reference:

3A60HB0G (Taiwan Semiconductor Corporation): This part operates at 3 A average rectified current with different forward voltage (1.1 V @ 3 A) and standard recovery speed classification. Not a direct substitute due to different electrical parameters and speed characteristics.

Frequently Asked Questions (FAQ)

Q: Can HER206G A0G directly replace HER206-AP in existing designs?

A: Yes. HER206G A0G is a parametric equivalent with identical voltage rating (600 V), current rating (2 A), forward voltage (1.7 V @ 2 A), and reverse recovery time (75 ns). Both use DO-15 through-hole packaging. The part is active and ROHS3 compliant.

Q: What is the difference between SF28G and SF28GHA0G?

A: Both parts share identical electrical specifications: 600 V, 2 A, 1.7 V forward voltage, and 35 ns reverse recovery time. SF28GHA0G carries automotive-grade qualification (AEC-Q101), making it suitable for automotive applications. SF28G is the standard industrial version.

Q: Why do SF28G and SF2L8G have faster reverse recovery times (35 ns) than the original HER206-AP (75 ns)?

A: The faster reverse recovery time is an improved characteristic of these substitute parts. Both maintain the same voltage and current ratings, forward voltage, and fast recovery speed classification. The improved trr provides faster switching performance without affecting compatibility in standard rectification circuits.

Q: What is the difference between SF2L8G A0G and SF28G?

A: Both parts have identical voltage (600 V), current (2 A), forward voltage (1.7 V @ 2 A), and reverse recovery time (35 ns) specifications. SF2L8G A0G features improved reverse leakage current of 1 µA @ 600 V compared to 5 µA in SF28G, making it suitable for applications requiring lower leakage performance.

Q: Is 3A60HB0G a suitable substitute for HER206-AP?

A: No. While 3A60HB0G shares the same 600 V voltage rating and DO-15 package, it operates at 3 A average rectified current with different forward voltage (1.1 V @ 3 A) and standard recovery speed classification (> 500 ns). These electrical differences make it unsuitable as a direct replacement.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts (HER206G A0G, SF28G, SF28GHA0G, SF2L8G A0G, SF2L8GHA0G) are ROHS3 compliant. The reference part 3A60HB0G is also ROHS3 compliant.

Q: What packaging options are available for substitute parts?

A: All substitute parts use DO-204AC (DO-15) axial through-hole packaging, matching the original HER206-AP form factor. SF28G is additionally available in Cut Tape (CT) packaging. All parts are suitable for through-hole PCB mounting.

Q: Which substitute part has the highest inventory availability?

A: SF28G has the highest inventory with 30,200 pcs in stock. This part is available in Cut Tape packaging and offers improved reverse recovery time (35 ns) while maintaining all other electrical equivalence to the original HER206-AP.

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