HER302G-TP Equivalent & Substitute Parts

Part Overview

The HER302G-TP is a general-purpose rectifier diode rated for 100 V DC reverse voltage and 3 A average rectified current in a DO-201AD axial through-hole package. This component is manufactured by Micro Commercial Co and is classified as not for new designs. Due to this product status designation, equivalent and substitute parts from active manufacturers are available to support ongoing production requirements and design continuity.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	100 V
Current - Average Rectified (Io)	3 A
Voltage - Forward (Vf) (Max) @ If	950 mV @ 3 A
Speed	Fast Recovery ≤ 500 ns, > 200 mA (Io)
Reverse Recovery Time (trr)	50 ns
Package / Case	DO-201AD, Axial
Mounting Type	Through Hole
Operating Temperature - Junction	-55°C ~ 150°C

Substitute Part Grouping Explanation

Substitution of the HER302G-TP is determined by the following critical parameters:

Electrical Compatibility Requirements:

Voltage - DC Reverse (Vr) (Max): 100 V minimum
Current - Average Rectified (Io): 3 A minimum
Reverse Recovery Time (trr): 50 ns maximum
Speed classification: Fast Recovery ≤ 500 ns, > 200 mA (Io)

Mechanical Compatibility Requirements:

Package / Case: DO-201AD, Axial
Mounting Type: Through Hole

Compliance Requirements:

RoHS3 Compliant
REACH Unaffected
ECCN: EAR99

All substitute parts listed meet or exceed these electrical specifications and maintain identical mechanical form factor and compliance certifications. Substitute parts are grouped based on active product status and availability from established manufacturers.

Parameter Comparison

Parameter	HER302G-TP (Micro Commercial Co)	EGP30B (Fairchild Semiconductor)	UF301G_R2_00001 (Panjit International Inc.)	UF5401-E3/54 (Vishay)	UF5401-E3/73 (Vishay)
Voltage - DC Reverse (Vr) (Max)	100 V	100 V	100 V	100 V	100 V
Current - Average Rectified (Io)	3 A	3 A	3 A	3 A	3 A
Voltage - Forward (Vf) (Max) @ If	950 mV @ 3 A	950 mV @ 3 A	1 V @ 3 A	1 V @ 3 A	1 V @ 3 A
Speed	Fast Recovery ≤ 500 ns, > 200 mA (Io)	Fast Recovery ≤ 500 ns, > 200 mA (Io)	Fast Recovery ≤ 500 ns, > 200 mA (Io)	Fast Recovery ≤ 500 ns, > 200 mA (Io)	Fast Recovery ≤ 500 ns, > 200 mA (Io)
Reverse Recovery Time (trr)	50 ns	50 ns	50 ns	50 ns	50 ns
Current - Reverse Leakage @ Vr	10 µA @ 100 V	5 µA @ 100 V	1 µA @ 100 V	10 µA @ 100 V	10 µA @ 100 V
Capacitance @ Vr, F	80 pF @ 4 V, 1 MHz	95 pF @ 4 V, 1 MHz	75 pF @ 4 V, 1 MHz	45 pF @ 4 V, 1 MHz	45 pF @ 4 V, 1 MHz
Package / Case	DO-201AD, Axial	DO-201AD, Axial	DO-201AD, Axial	DO-201AD, Axial	DO-201AD, Axial
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Operating Temperature - Junction	-55°C ~ 150°C	-65°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C
Product Status	Not For New Designs	Active	Active	Active	Active
RoHS3 Compliant	Yes	Not specified	Yes	Yes	Yes

Engineering Selection Recommendations

EGP30B (Fairchild Semiconductor) is a direct functional equivalent with identical electrical ratings and package form factor. This part is actively manufactured and maintains RoHS3 compliance status. The EGP30B offers superior reverse leakage characteristics (5 µA vs. 10 µA) and an extended lower operating temperature limit (-65°C vs. -55°C).

UF301G_R2_00001 (Panjit International Inc.) is a parametric equivalent with active product status and RoHS3 compliance. This part exhibits the lowest reverse leakage current (1 µA @ 100 V) and is supplied in tape and reel packaging. Forward voltage is specified at 1 V @ 3 A, which is within acceptable tolerance for general-purpose rectification applications.

UF5401-E3/54 and UF5401-E3/73 (Vishay General Semiconductor - Diodes Division) are parametric equivalents from the same manufacturer base product line (UF5401). Both variants are actively manufactured with RoHS3 compliance and identical electrical specifications. These parts feature the lowest capacitance (45 pF @ 4 V, 1 MHz) and are supplied in cut tape packaging. The primary distinction between these two part numbers is the packaging reel configuration.

All substitute parts satisfy the core electrical requirements of 100 V reverse voltage, 3 A average rectified current, 50 ns reverse recovery time, and fast recovery speed classification. All maintain the DO-201AD axial through-hole package form factor and are RoHS3 compliant.

Frequently Asked Questions (FAQ)

Q: Can EGP30B be used as a direct replacement for HER302G-TP?

A: Yes. The EGP30B meets all electrical specifications (100 V, 3 A, 50 ns trr, fast recovery) and uses the identical DO-201AD axial through-hole package. Both parts are RoHS3 compliant. The EGP30B is actively manufactured, addressing the not-for-new-designs status of the HER302G-TP.

Q: What is the difference between UF5401-E3/54 and UF5401-E3/73?

A: Both parts are electrically identical with the same ratings and specifications. The difference is in packaging configuration. UF5401-E3/54 and UF5401-E3/73 are supplied on different reel formats as cut tape. Electrical performance and mechanical compatibility are identical.

Q: Does forward voltage variation affect substitution compatibility?

A: The HER302G-TP specifies 950 mV @ 3 A forward voltage, while UF301G_R2_00001, UF5401-E3/54, and UF5401-E3/73 specify 1 V @ 3 A. This 50 mV difference is within normal tolerance for general-purpose rectifier applications and does not prevent functional substitution in standard rectification circuits.

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

A: No. The HER302G-TP is supplied in tape and reel (TR) packaging. EGP30B is supplied in bulk packaging. UF301G_R2_00001 is supplied in tape and reel (TR). UF5401-E3/54 and UF5401-E3/73 are supplied in cut tape (CT) packaging. Packaging format does not affect electrical or mechanical compatibility; it only affects procurement and handling procedures.

Q: Which substitute part has the best reverse leakage performance?

A: UF301G_R2_00001 exhibits the lowest reverse leakage current at 1 µA @ 100 V, compared to 10 µA for the HER302G-TP. EGP30B provides intermediate performance at 5 µA @ 100 V. Lower reverse leakage reduces standby current consumption in applications where this parameter is critical.

Q: Are all substitute parts RoHS3 compliant?

A: EGP30B compliance status is not specified in the provided data. UF301G_R2_00001, UF5401-E3/54, and UF5401-E3/73 are confirmed RoHS3 compliant. Compliance verification with the component supplier is required for EGP30B before use in applications with RoHS3 requirements.

Q: What is the operating temperature range difference between substitutes?

A: The HER302G-TP, UF301G_R2_00001, UF5401-E3/54, and UF5401-E3/73 operate from -55°C to 150°C. The EGP30B extends the lower limit to -65°C, providing a 10°C advantage for low-temperature applications. All parts maintain the same 150°C upper limit.

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