HER202-AP Equivalent & Substitute Parts

Part Overview

The HER202-AP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 100 V DC reverse voltage and 2 A average rectified current in a DO-15 through-hole package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The HER202-AP features fast recovery characteristics with a 50 ns reverse recovery time, suitable for standard rectification applications requiring moderate current handling at 100 V operation.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	100 V
Current - Average Rectified (Io)	2 A
Voltage - Forward (Vf) (Max) @ If	1 V @ 2 A
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)
Reverse Recovery Time (trr)	50 ns
Current - Reverse Leakage @ Vr	5 µA @ 100 V
Mounting Type	Through Hole
Package / Case	DO-204AC, DO-15, Axial
Operating Temperature - Junction	-55°C ~ 150°C
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute parts for the HER202-AP are classified based on strict electrical and mechanical parameter alignment:

Upgrade Substitute (Direct Replacement): Parts that match or exceed all critical electrical parameters while maintaining identical package compatibility. The primary criterion is matching the 100 V reverse voltage rating, 2 A average rectified current, fast recovery speed classification (≤ 500ns), 50 ns reverse recovery time, and through-hole DO-15 package format.

Parametric Equivalent (Full Specification Match): Parts that provide identical electrical performance across all specified parameters, including voltage, current, recovery characteristics, and temperature range, with the same base product number designation.

Similar Parts (Reduced Current Rating): Parts that maintain voltage and package compatibility but operate at reduced current ratings (1.5 A instead of 2 A). These are suitable only for applications where the lower current rating is acceptable.

The substitution logic is based on the following critical parameters:

Voltage - DC Reverse (Vr) (Max): 100 V minimum
Current - Average Rectified (Io): 2 A for direct substitutes; 1.5 A for similar parts
Speed Classification: Fast Recovery ≤ 500ns for upgrade and parametric equivalents
Reverse Recovery Time (trr): 50 ns for upgrade and parametric equivalents
Package / Case: DO-204AC, DO-15, Axial (through-hole format)
Mounting Type: Through Hole

Parameter Comparison

Parameter	HER202-AP (Main)	EGP20B (Upgrade)	HER202G A0G (Parametric Equivalent)	1N5392GHB0G (Similar)
Manufacturer	Micro Commercial Co	Fairchild Semiconductor	Taiwan Semiconductor Corporation	Taiwan Semiconductor Corporation
Voltage - DC Reverse (Vr) (Max)	100 V	100 V	100 V	100 V
Current - Average Rectified (Io)	2 A	2 A	2 A	1.5 A
Voltage - Forward (Vf) (Max) @ If	1 V @ 2 A	950 mV @ 2 A	1 V @ 2 A	1.1 V @ 1.5 A
Speed Classification	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Standard Recovery >500ns, > 200mA
Reverse Recovery Time (trr)	50 ns	50 ns	50 ns	Not specified
Current - Reverse Leakage @ Vr	5 µA @ 100 V	5 µA @ 100 V	5 µA @ 100 V	5 µA @ 100 V
Capacitance @ Vr, F	50pF @ 4V, 1MHz	70pF @ 4V, 1MHz	35pF @ 4V, 1MHz	15pF @ 4V, 1MHz
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	DO-204AC, DO-15, Axial	DO-204AC, DO-15, Axial	DO-204AC, DO-15, Axial	DO-204AC, DO-15, Axial
Operating Temperature - Junction	-55°C ~ 150°C	-65°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C
Product Status	Obsolete	Active	Active	Active
RoHS Status	ROHS3 Compliant	Not specified	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

EGP20B (Upgrade Substitute): This part is the primary substitute for the HER202-AP. It maintains all critical electrical specifications including 100 V reverse voltage, 2 A average rectified current, fast recovery speed (≤ 500ns), and 50 ns reverse recovery time. The EGP20B is manufactured by Fairchild Semiconductor and carries active product status, ensuring long-term availability. The forward voltage is slightly lower at 950 mV compared to 1 V, representing improved efficiency. The operating temperature range extends to -65°C, providing enhanced low-temperature performance. This part is suitable for direct replacement in all applications where the HER202-AP was originally specified.

HER202G A0G (Parametric Equivalent): This part provides identical electrical performance to the HER202-AP across all specified parameters, including voltage, current, forward voltage, recovery characteristics, and temperature range. Manufactured by Taiwan Semiconductor Corporation, it carries active product status and ROHS3 compliance. The base product number HER202 indicates functional equivalence. This part is suitable for applications requiring exact parameter matching and is available in active production status.

1N5392GHB0G (Similar Part - Reduced Current Rating): This part operates at 1.5 A average rectified current, which is 25% lower than the HER202-AP specification of 2 A. It maintains the 100 V reverse voltage rating and through-hole DO-15 package format. However, it features standard recovery characteristics (>500ns) rather than fast recovery, and does not specify a reverse recovery time. This part includes automotive qualification (AEC-Q101) and is manufactured by Taiwan Semiconductor Corporation with active product status. Selection of this part is limited to applications where the reduced current rating and standard recovery speed are acceptable.

Frequently Asked Questions (FAQ)

Q: Can the EGP20B be used as a direct replacement for the HER202-AP?

A: Yes. The EGP20B matches all critical electrical parameters: 100 V reverse voltage, 2 A average rectified current, fast recovery speed (≤ 500ns), 50 ns reverse recovery time, and identical through-hole DO-15 package format. The slightly lower forward voltage (950 mV vs. 1 V) represents improved performance. The extended operating temperature range (-65°C to 150°C) provides additional margin.

Q: What is the difference between the HER202G A0G and the HER202-AP?

A: The HER202G A0G is a parametric equivalent manufactured by Taiwan Semiconductor Corporation. It provides identical electrical specifications across all parameters: 100 V reverse voltage, 2 A average rectified current, 1 V forward voltage at 2 A, 50 ns reverse recovery time, and -55°C to 150°C operating temperature range. The primary difference is manufacturer and active product status versus obsolete status.

Q: Why is the 1N5392GHB0G listed as a similar part rather than a direct substitute?

A: The 1N5392GHB0G operates at 1.5 A average rectified current, which is 25% lower than the HER202-AP specification of 2 A. Additionally, it features standard recovery characteristics (>500ns) rather than fast recovery (≤ 500ns). These differences limit its use to applications where the reduced current and standard recovery speed are acceptable.

Q: Are all substitute parts available in the same package format?

A: Yes. All substitute parts listed are available in the DO-204AC, DO-15, Axial through-hole package format, ensuring mechanical and electrical compatibility with existing PCB layouts and circuit designs.

Q: What compliance certifications apply to the substitute parts?

A: The EGP20B is manufactured by Fairchild Semiconductor with active product status. The HER202G A0G carries ROHS3 compliance and REACH Unaffected status. The 1N5392GHB0G includes ROHS3 compliance, REACH Unaffected status, and automotive qualification (AEC-Q101).

Q: How do the reverse recovery times compare across substitute options?

A: The HER202-AP, EGP20B, and HER202G A0G all specify 50 ns reverse recovery time, indicating identical fast recovery performance. The 1N5392GHB0G does not specify a reverse recovery time value, though it is classified as standard recovery (>500ns), indicating slower switching characteristics.

Q: Can capacitance differences between substitute parts affect circuit performance?

A: Capacitance values vary across the substitute parts: HER202-AP (50pF), EGP20B (70pF), HER202G A0G (35pF), and 1N5392GHB0G (15pF), all measured at 4V and 1MHz. These differences may affect high-frequency circuit behavior. For applications sensitive to junction capacitance, the HER202G A0G or 1N5392GHB0G offer lower capacitance values.

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