HER206G Equivalent & Substitute Parts

Part Overview

The HER206G is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 600 V DC reverse voltage and 2 A average rectified current in a DO-204AC (DO-15) through-hole axial package. The device is classified as a fast recovery diode with a reverse recovery time of 75 ns and operates across a junction temperature range of -55°C to 150°C. The part is RoHS3 compliant and carries an active product status.

Equivalent and substitute parts are identified to address supply chain requirements, inventory availability, or application-specific performance needs while maintaining electrical and mechanical compatibility within the specified parameter ranges.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	600	V
Current - Average Rectified (Io)	2	A
Voltage - Forward (Vf) (Max) @ If	1.7 @ 2 A	V
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	-
Reverse Recovery Time (trr)	75	ns
Current - Reverse Leakage @ Vr	5	µA @ 600 V
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

Substitute parts for the HER206G are classified into two categories based on electrical parameter alignment:

Direct Equivalents and Parametric Equivalents maintain all critical electrical specifications: 600 V reverse voltage rating, 2 A average rectified current, 1.7 V maximum forward voltage at 2 A, fast recovery speed classification (≤ 500ns), and identical through-hole DO-204AC (DO-15) axial packaging. These parts differ only in reverse recovery time (35 ns versus 75 ns for the main part), reverse leakage current (1 µA or 5 µA), or automotive qualification grades, which represent performance enhancements or specialized certifications rather than deviations from the core specification.

Similar Parts share the same 600 V reverse voltage rating and DO-204AC (DO-15) package but differ in average rectified current (1 A or 1.5 A) or recovery speed classification. These parts are suitable for applications with lower current requirements or where standard recovery speed is acceptable.

Substitution eligibility is determined by:

Voltage - DC Reverse (Vr) (Max): 600 V (mandatory match)
Package / Case: DO-204AC, DO-15, Axial (mandatory match)
Current - Average Rectified (Io): 2 A (for direct equivalents) or ≥ required current (for similar parts)
Speed Classification: Fast Recovery or Standard Recovery (application-dependent)
Operating Temperature Range: -55°C to 150°C minimum (mandatory match or exceed)

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [V]	Speed	trr [ns]	Ir @ Vr [µA]	Package	Tj Range [°C]	Grade
HER206G	Taiwan Semiconductor Corporation	600	2	1.7 @ 2 A	Fast Recovery ≤ 500ns	75	5 @ 600 V	DO-204AC (DO-15)	-55 to 150	Standard
SF28G	Taiwan Semiconductor Corporation	600	2	1.7 @ 2 A	Fast Recovery ≤ 500ns	35	5 @ 600 V	DO-204AC (DO-15)	-55 to 150	Standard
SF28GH	Taiwan Semiconductor Corporation	600	2	1.7 @ 2 A	Fast Recovery ≤ 500ns	35	5 @ 600 V	DO-204AC (DO-15)	-55 to 150	Automotive (AEC-Q101)
SF2L8G	Taiwan Semiconductor Corporation	600	2	1.7 @ 2 A	Fast Recovery ≤ 500ns	35	1 @ 600 V	DO-204AC (DO-15)	-55 to 150	Standard
SF2L8GH	Taiwan Semiconductor Corporation	600	2	1.7 @ 2 A	Fast Recovery ≤ 500ns	35	1 @ 600 V	DO-204AC (DO-15)	-55 to 150	Automotive (AEC-Q101)
EGP20J	Fairchild Semiconductor	600	2	1.7 @ 2 A	Fast Recovery ≤ 500ns	75	5 @ 600 V	DO-204AC (DO-15)	-65 to 150	Standard
GPP20J-E3/54	Vishay General Semiconductor - Diodes Division	600	2	1.1 @ 2 A	Standard Recovery >500ns	Not specified	5 @ 600 V	DO-204AC (DO-15)	-55 to 150	Standard
1N5397GP-E3/54	Vishay General Semiconductor - Diodes Division	600	1.5	1.4 @ 1.5 A	Standard Recovery >500ns	2000	5 @ 600 V	DO-204AC (DO-15)	-65 to 175	Standard
1N5619GP-E3/54	Vishay General Semiconductor - Diodes Division	600	1	1.2 @ 1 A	Fast Recovery ≤ 500ns	250	0.5 @ 600 V	DO-204AC (DO-15)	-65 to 175	Standard
GP15J-E3/54	Vishay General Semiconductor - Diodes Division	600	1.5	1.1 @ 1.5 A	Standard Recovery >500ns	3500	5 @ 600 V	DO-204AC (DO-15)	-65 to 175	Standard

Engineering Selection Recommendations

Direct Equivalents (Preferred for Drop-In Replacement)

SF28G, SF28GH, SF2L8G, and SF2L8GH are direct parametric equivalents manufactured by Taiwan Semiconductor Corporation. All four parts maintain the 600 V reverse voltage, 2 A average rectified current, and DO-204AC (DO-15) package specifications. SF28G and SF2L8G are standard-grade devices with improved reverse recovery time (35 ns) compared to the HER206G (75 ns). SF28GH and SF2L8GH carry automotive qualification (AEC-Q101) and are suitable for applications requiring automotive-grade components. SF2L8G and SF2L8GH feature reduced reverse leakage current (1 µA) compared to the main part (5 µA), providing enhanced performance in low-leakage applications. All four parts are RoHS3 compliant and carry active product status.

EGP20J, manufactured by Fairchild Semiconductor, is a direct electrical equivalent with identical voltage, current, and speed specifications. The operating temperature range extends to -65°C, providing enhanced low-temperature performance. This part is suitable for applications requiring extended temperature operation.

Similar Parts (Current-Reduced Alternatives)

GPP20J-E3/54 maintains the 2 A current rating and 600 V voltage specification but operates with standard recovery speed (>500ns) rather than fast recovery. Forward voltage is reduced to 1.1 V at 2 A. This part is suitable for applications where switching speed is not critical and lower forward voltage drop is beneficial.

1N5397GP-E3/54 and GP15J-E3/54 are rated for 1.5 A average rectified current and are suitable for applications with reduced current requirements. Both operate with standard recovery speed. 1N5397GP-E3/54 features a forward voltage of 1.4 V at 1.5 A, while GP15J-E3/54 offers 1.1 V at 1.5 A. Both parts support extended operating temperature ranges (-65°C to 175°C).

1N5619GP-E3/54 is rated for 1 A average rectified current with fast recovery speed (≤ 500ns) and reduced reverse leakage current (0.5 µA). This part is suitable for low-current, fast-switching applications.

All substitute parts listed maintain RoHS3 compliance and active product status, ensuring regulatory alignment and supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can SF28G be used as a direct replacement for HER206G?

A: Yes. SF28G is a direct parametric equivalent with identical 600 V reverse voltage, 2 A average rectified current, 1.7 V forward voltage at 2 A, and DO-204AC (DO-15) package. The reverse recovery time is improved (35 ns versus 75 ns), which represents enhanced performance rather than incompatibility. Both parts are RoHS3 compliant and operate across -55°C to 150°C.

Q: What is the difference between SF28GH and SF28G?

A: SF28GH carries automotive qualification (AEC-Q101) and is designated as automotive-grade, while SF28G is standard-grade. Both parts share identical electrical specifications: 600 V, 2 A, 1.7 V forward voltage, 35 ns reverse recovery time, and DO-204AC (DO-15) package. SF28GH is required for applications subject to automotive quality standards.

Q: Why does GPP20J-E3/54 have a lower forward voltage (1.1 V) than HER206G (1.7 V)?

A: Forward voltage variation is a normal characteristic of different diode designs and manufacturing processes. GPP20J-E3/54 is a standard recovery diode, while HER206G is a fast recovery diode. The lower forward voltage in GPP20J-E3/54 reflects its different internal structure. Both parts meet the 600 V, 2 A specification and DO-204AC (DO-15) package requirement. Selection depends on whether fast recovery speed is required for the application.

Q: Can 1N5397GP-E3/54 replace HER206G in a 2 A application?

A: No. 1N5397GP-E3/54 is rated for 1.5 A average rectified current, which is below the 2 A requirement of HER206G. Using a lower-rated device in a 2 A application exceeds the component's current specification and creates reliability risk. This part is suitable only for applications requiring 1.5 A or less.

Q: What is the significance of the DO-204AC (DO-15) package designation?

A: DO-204AC and DO-15 are equivalent package designations for the same through-hole axial diode package. All substitute parts listed use this identical package, ensuring mechanical and electrical compatibility with circuit board layouts and PCB footprints designed for HER206G. No board redesign is required when substituting between parts with this package specification.

Q: Are all listed substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed carry RoHS3 compliance status, ensuring regulatory alignment with environmental and hazardous substance restrictions. This compliance is maintained across all Taiwan Semiconductor Corporation, Fairchild Semiconductor, and Vishay General Semiconductor parts in the substitution list.

Q: What does "Fast Recovery ≤ 500ns" mean in the context of diode selection?

A: Fast recovery classification indicates that the reverse recovery time (trr) is 500 nanoseconds or less. This specification is critical for high-frequency switching applications where rapid diode turn-off is required to minimize switching losses and electromagnetic interference. HER206G, SF28G, SF28GH, SF2L8G, SF2L8GH, EGP20J, and 1N5619GP-E3/54 meet this fast recovery criterion. GPP20J-E3/54, 1N5397GP-E3/54, and GP15J-E3/54 are standard recovery devices (>500ns) and are suitable for lower-frequency applications.

Q: Can SF2L8G be used in place of SF28G?

A: Yes, with consideration of reverse leakage current. Both parts share identical voltage (600 V), current (2 A), forward voltage (1.7 V @ 2 A), speed (fast recovery ≤ 500ns), reverse recovery time (35 ns), and package (DO-204AC DO-15) specifications. SF2L8G features reduced reverse leakage current (1 µA versus 5 µA), which is beneficial in low-leakage applications. The substitution is electrically valid and represents an enhancement in leakage performance.

Q: What is the operating temperature range significance for HER206G?

A: HER206G operates across a junction temperature range of -55°C to 150°C. This range defines the thermal limits within which the device maintains specified electrical characteristics. Substitute parts must support at least this range. EGP20J, 1N5397GP-E3/54, 1N5619GP-E3/54, and GP15J-E3/54 extend the upper temperature limit to 175°C, providing enhanced thermal margin in high-temperature environments. All other substitutes maintain the -55°C to 150°C range.

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