GP20B-E3/54 Equivalent & Substitute Parts

Part Overview

The GP20B-E3/54 is a general-purpose rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 100 V DC reverse voltage and 2 A average rectified current. This component is classified as obsolete, necessitating identification of active equivalent alternatives for new designs and ongoing production requirements. Substitute parts must maintain electrical compatibility across voltage, current, and thermal specifications while meeting applicable compliance standards.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	100 V
Current - Average Rectified (Io)	2 A
Voltage - Forward (Vf) (Max) @ If	1.2 V @ 2 A
Speed	Standard Recovery >500ns, > 200mA (Io)
Reverse Recovery Time (trr)	5 µs
Current - Reverse Leakage @ Vr	5 µA @ 100 V
Mounting Type	Through Hole
Package / Case	DO-201AA, DO-27, Axial
Operating Temperature - Junction	-65°C ~ 150°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the GP20B-E3/54 are selected based on the following critical electrical and mechanical parameters:

Voltage Compatibility: All substitutes maintain the 100 V DC reverse voltage rating, ensuring direct replacement in circuits designed for this voltage class.

Current Rating: Substitute parts are rated at 2 A or higher average rectified current, providing equal or superior current-handling capability.

Recovery Characteristics: Substitutes operate within standard or fast recovery speed classifications, maintaining compatibility with circuit switching requirements.

Thermal Range: Operating temperature ranges must encompass or exceed the -65°C to 150°C junction temperature specification.

Mounting and Package: All substitutes utilize through-hole axial mounting configurations compatible with the original package footprint.

Compliance: Substitutes maintain ROHS3 compliance and EAR99 export classification alignment with the original part.

Parameter Comparison

Parameter	GP20B-E3/54 (Main)	1N5401-G (Substitute)	EGP20B (Substitute)
Manufacturer	Vishay General Semiconductor	Comchip Technology	Fairchild Semiconductor
Product Status	Obsolete	Active	Active
Voltage - DC Reverse (Vr) (Max)	100 V	100 V	100 V
Current - Average Rectified (Io)	2 A	3 A	2 A
Voltage - Forward (Vf) (Max) @ If	1.2 V @ 2 A	950 mV @ 3 A	950 mV @ 2 A
Speed Classification	Standard Recovery >500ns	Standard Recovery >500ns	Fast Recovery ≤500ns
Reverse Recovery Time (trr)	5 µs	Not specified	50 ns
Current - Reverse Leakage @ Vr	5 µA @ 100 V	5 µA @ 100 V	5 µA @ 100 V
Mounting Type	Through Hole	Through Hole	Through Hole
Package / Case	DO-201AA, DO-27, Axial	DO-201AD, Axial	DO-204AC, DO-15, Axial
Operating Temperature - Junction	-65°C ~ 150°C	-65°C ~ 125°C	-65°C ~ 150°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

1N5401-G (Comchip Technology)

The 1N5401-G is an active general-purpose rectifier diode suitable for direct substitution in applications requiring 100 V, 2 A operation. This part offers superior current rating at 3 A, providing design margin above the original 2 A specification. The 1N5401-G maintains standard recovery characteristics and identical reverse leakage performance. The operating temperature range extends to -65°C minimum but limits to 125°C maximum, which is 25°C below the original specification. This part is ROHS3 compliant and maintains EAR99 classification. Selection of the 1N5401-G is appropriate for applications where the reduced upper temperature limit does not conflict with circuit thermal requirements.

EGP20B (Fairchild Semiconductor)

The EGP20B is an active general-purpose rectifier diode rated for 100 V, 2 A operation with identical current specification to the original part. This substitute features fast recovery characteristics (≤500ns) with reverse recovery time of 50 ns, compared to the original 5 µs standard recovery specification. The EGP20B maintains the full -65°C to 150°C operating temperature range of the original part. Forward voltage is reduced to 950 mV at 2 A, providing improved efficiency characteristics. This part is ROHS3 compliant and maintains EAR99 classification. The EGP20B is suitable for applications where fast recovery performance is compatible with circuit design requirements.

Frequently Asked Questions (FAQ)

Q: Can the 1N5401-G replace the GP20B-E3/54 in all applications?

A: The 1N5401-G maintains 100 V voltage rating and provides 3 A current capacity, exceeding the original 2 A requirement. However, the maximum operating temperature is limited to 125°C compared to the original 150°C specification. Substitution is valid only when circuit thermal design does not require operation above 125°C junction temperature.

Q: What is the primary difference between the 1N5401-G and EGP20B substitutes?

A: The 1N5401-G operates with standard recovery characteristics (>500ns) and is rated for 3 A current. The EGP20B operates with fast recovery characteristics (≤50ns) and maintains the original 2 A current rating. The EGP20B preserves the full -65°C to 150°C temperature range, while the 1N5401-G limits operation to 125°C maximum.

Q: Are package dimensions identical between the main part and substitutes?

A: The GP20B-E3/54 utilizes DO-201AA/DO-27 axial package. The 1N5401-G uses DO-201AD axial package, and the EGP20B uses DO-204AC/DO-15 axial package. While all are through-hole axial configurations, physical dimensions may differ. Verification of PCB footprint compatibility is required before substitution.

Q: Do all parts meet the same compliance requirements?

A: All three parts are ROHS3 compliant, EAR99 classified, and carry HTSUS code 8541.10.0080. Moisture sensitivity level is 1 (Unlimited) for all parts. Compliance alignment is maintained across the main part and both substitutes.

Q: Which substitute is recommended for high-temperature applications?

A: The EGP20B maintains the original -65°C to 150°C operating temperature range and is suitable for applications requiring full thermal specification compliance. The 1N5401-G is limited to 125°C maximum and is not suitable for applications exceeding this temperature.

Q: What is the significance of forward voltage differences between parts?

A: The original GP20B-E3/54 specifies 1.2 V forward voltage at 2 A. Both substitutes (1N5401-G at 950 mV and EGP20B at 950 mV) exhibit lower forward voltage, resulting in reduced power dissipation and improved efficiency. Circuit designs dependent on specific forward voltage characteristics require evaluation.

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