HER207G Equivalent & Substitute Parts

Part Overview

The HER207G is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 800 V DC reverse voltage and 2 A average rectified current in a DO-204AC (DO-15) axial through-hole package. This component is classified as Active product status with ROHS3 compliance and fast recovery characteristics (≤500 ns). Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, obsolescence of primary sources, or design flexibility needs within the specified parameter envelope.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) Maximum	800	V
Current - Average Rectified (Io)	2	A
Voltage - Forward (Vf) Maximum @ If	1.7 V @ 2 A	V
Speed Classification	Fast Recovery ≤500 ns, >200 mA (Io)	—
Reverse Recovery Time (trr)	75	ns
Current - Reverse Leakage @ Vr	5	µA @ 800 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 HER207G are classified based on strict electrical and mechanical parameter alignment within the rectifier diode category. The primary substitution criteria are:

Critical Parameters for Substitution:

Voltage - DC Reverse (Vr) Maximum: 800 V (exact match required)
Mounting Type: Through Hole (exact match required)
Package / Case: DO-204AC, DO-15, Axial (exact match required)
Current - Average Rectified (Io): 2 A (exact match for direct substitution)

Secondary Parameters Affecting Compatibility:

Voltage - Forward (Vf) Maximum @ If: Must not exceed application requirements
Reverse Recovery Time (trr): Fast recovery classification (≤500 ns) preferred for switching applications
Current - Reverse Leakage @ Vr: Lower values indicate superior performance
Operating Temperature Range: Must encompass application requirements
RoHS Status: ROHS3 compliance preferred for regulatory alignment

Substitution Categories:

Direct Equivalent: HER207G (Taiwan Semiconductor Corporation) — Identical electrical and mechanical specifications. Active product status with full ROHS3 compliance.

Functional Equivalent with Current Derating: EGP20K (Nexperia USA Inc.) — Matches 800 V reverse voltage, 2 A current rating, DO-15 package, and fast recovery characteristics. Obsolete product status and RoHS non-compliance restrict use to legacy applications only.

Partial Substitutes (Current Derating Required): 1N5621GP-E3/54, BYV26DGP-E3/73, and GP15K-E3/54 (Vishay General Semiconductor - Diodes Division) — All three parts match 800 V reverse voltage and DO-204AC package. Current ratings range from 1 A to 1.5 A, requiring circuit derating analysis. Recovery time characteristics vary (75 ns to 3.5 µs). Active product status with ROHS3 compliance.

Parameter Comparison

Parameter	HER207G (Main)	EGP20K	1N5621GP-E3/54	BYV26DGP-E3/73	GP15K-E3/54
Manufacturer	Taiwan Semiconductor Corporation	Nexperia USA Inc.	Vishay General Semiconductor	Vishay General Semiconductor	Vishay General Semiconductor
Voltage - DC Reverse (Vr) Max	800 V	800 V	800 V	800 V	800 V
Current - Average Rectified (Io)	2 A	2 A	1 A	1 A	1.5 A
Voltage - Forward (Vf) Max @ If	1.7 V @ 2 A	1.7 V @ 2 A	1.2 V @ 1 A	2.5 V @ 1 A	1.1 V @ 1.5 A
Speed Classification	Fast Recovery ≤500 ns	Fast Recovery ≤500 ns	Fast Recovery ≤500 ns	Fast Recovery ≤500 ns	Standard Recovery >500 ns
Reverse Recovery Time (trr)	75 ns	75 ns	300 ns	75 ns	3.5 µs
Current - Reverse Leakage @ Vr	5 µA @ 800 V	5 µA @ 800 V	500 nA @ 800 V	5 µA @ 800 V	5 µA @ 800 V
Capacitance @ Vr, F	20 pF @ 4V, 1MHz	45 pF @ 4V, 1MHz	25 pF @ 4V, 1MHz	15 pF @ 4V, 1MHz	15 pF @ 4V, 1MHz
Package / Case	DO-204AC, 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	-65 to 150 °C	-65 to 175 °C	-65 to 175 °C	-65 to 175 °C
Product Status	Active	Obsolete	Active	Active	Active
RoHS Status	ROHS3 Compliant	RoHS Non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Selection: HER207G

The HER207G remains the optimal choice for new designs and production applications. Active product status ensures long-term availability and supply chain stability. ROHS3 compliance satisfies regulatory requirements for commercial and industrial applications. Electrical specifications (800 V, 2 A, 75 ns recovery time) establish this part as the reference standard for this substitution group.

Secondary Selection: EGP20K

The EGP20K provides electrical equivalence with identical 800 V reverse voltage, 2 A current rating, and 75 ns recovery time. However, obsolete product status and RoHS non-compliance restrict application to legacy system maintenance and repair scenarios where original component replacement is required. New designs must not incorporate this part.

Tertiary Selections: 1N5621GP-E3/54, BYV26DGP-E3/73, GP15K-E3/54

These Vishay parts provide 800 V reverse voltage compatibility within the DO-204AC package. All three maintain Active product status and ROHS3 compliance. Current ratings (1 A to 1.5 A) require circuit derating analysis relative to the 2 A HER207G specification. Selection among these three depends on application-specific requirements:

1N5621GP-E3/54: 1 A rating with superior reverse leakage performance (500 nA vs. 5 µA) and 300 ns recovery time. Suitable for low-current, high-precision applications.
BYV26DGP-E3/73: 1 A rating with 75 ns recovery time matching HER207G. Higher forward voltage (2.5 V @ 1 A) increases power dissipation. Lowest capacitance (15 pF) benefits high-frequency switching circuits.
GP15K-E3/54: 1.5 A rating with lowest forward voltage (1.1 V @ 1.5 A) and superior thermal performance. Standard recovery classification (3.5 µs) limits use to non-switching applications.

Frequently Asked Questions (FAQ)

Q: Can EGP20K directly replace HER207G in new production?

A: No. Although EGP20K provides electrical equivalence, obsolete product status and RoHS non-compliance disqualify it for new designs. Use EGP20K only for legacy system maintenance where original component specifications are mandatory.

Q: What is the impact of using 1N5621GP-E3/54 (1 A) instead of HER207G (2 A)?

A: Direct substitution requires circuit derating. The 1 A current rating limits maximum rectified current to 50% of HER207G capacity. Applications must operate within 1 A average rectified current. Reverse voltage (800 V) and package (DO-204AC) remain compatible. Forward voltage improves (1.2 V vs. 1.7 V @ rated current), reducing power dissipation.

Q: Are all substitute parts mechanically compatible with HER207G?

A: Yes. All listed substitutes use DO-204AC (DO-15) axial through-hole packages with identical pin spacing and mounting footprints. PCB layout and mechanical assembly require no modification.

Q: Which substitute offers the best thermal performance?

A: GP15K-E3/54 exhibits the lowest forward voltage (1.1 V @ 1.5 A), minimizing power dissipation and junction temperature rise. However, standard recovery classification (3.5 µs) restricts use to DC rectification and low-frequency applications. For switching applications, BYV26DGP-E3/73 (75 ns recovery) or 1N5621GP-E3/54 (300 ns recovery) are preferred despite higher forward voltage.

Q: Does reverse recovery time affect circuit performance?

A: Yes. Fast recovery (≤500 ns) reduces switching losses and electromagnetic interference in high-frequency rectification circuits. HER207G (75 ns), EGP20K (75 ns), and BYV26DGP-E3/73 (75 ns) are optimal for switching applications. 1N5621GP-E3/54 (300 ns) suits moderate-frequency circuits. GP15K-E3/54 (3.5 µs standard recovery) is limited to DC rectification.

Q: What is the significance of reverse leakage current differences?

A: Reverse leakage current (5 µA to 500 nA @ 800 V) affects standby power consumption and circuit stability. 1N5621GP-E3/54 (500 nA) provides superior performance in precision analog circuits and low-power applications. Other parts (5 µA) are suitable for general-purpose rectification where leakage current is not a limiting factor.

Q: Are all substitutes RoHS compliant?

A: HER207G, 1N5621GP-E3/54, BYV26DGP-E3/73, and GP15K-E3/54 are ROHS3 compliant. EGP20K is RoHS non-compliant and restricted to legacy applications. Regulatory requirements for new products mandate ROHS3-compliant parts.

Q: Can substitutes be mixed in the same circuit?

A: No. Mixing parts with different current ratings (1 A, 1.5 A, 2 A) in parallel or series configurations creates current distribution imbalances and thermal stress. Use a single part number throughout the circuit design.

Q: What operating temperature range is required for substitution?

A: HER207G operates -55°C to 150°C. Substitutes operate -65°C to 175°C, providing extended low-temperature performance. Applications requiring operation below -55°C must use substitute parts. Applications limited to -55°C to 150°C range are compatible with all parts.

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