HER304G-TP Equivalent & Substitute Parts

Part Overview

The HER304G-TP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 300 V DC reverse voltage and 3 A average rectified current in a DO-201AD axial through-hole package. This component is classified as Active product status and is RoHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, supply chain considerations, or specific packaging requirements.

Substiute Parts

HER304G-TP

Micro Commercial CoIn Stock: 919HER304G-TP Datasheet

Current PartRFQ

EGP30F

Fairchild SemiconductorIn Stock: 3665EGP30F Datasheet

SimilarRFQ

HER304G

Taiwan Semiconductor CorporationIn Stock: 2040HER304G Datasheet

Parametric EquivalentRFQ

UF5403-E3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 3318UF5403-E3/54 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the HER304G-TP are qualified based on the following critical parameters that determine functional and mechanical compatibility:

Electrical Parameters (Must Match or Exceed):

• Voltage - DC Reverse (Vr) (Max): 300 V minimum
• Current - Average Rectified (Io): 3 A minimum
• Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)
• Reverse Recovery Time (trr): 50 ns maximum
• Operating Temperature Range: Must encompass -55°C to 150°C junction temperature

Mechanical Parameters (Must Match):

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

Compliance Parameters:

• RoHS3 Compliant status
• REACH Unaffected status
• ECCN: EAR99

All substitute parts listed meet or exceed these criteria and are classified as Active product status.

Parameter Comparison

Engineering Selection Recommendations

HER304G (Taiwan Semiconductor Corporation) is a parametric equivalent offering identical electrical specifications to the HER304G-TP with matching reverse voltage, average rectified current, reverse recovery time, and operating temperature range. This part is RoHS3 compliant and REACH unaffected. The primary difference is packaging format (Cut Tape versus Tape & Reel), which affects handling and assembly processes but not electrical performance.

UF5403-E3/54 (Vishay General Semiconductor - Diodes Division) is a parametric equivalent meeting all critical electrical specifications with identical reverse voltage, current rating, and recovery characteristics. This part is RoHS3 compliant and REACH unaffected. The forward voltage and capacitance parameters are within acceptable ranges for general-purpose rectification applications. Packaging is Cut Tape format.

EGP30F (Fairchild Semiconductor) meets all critical electrical specifications with identical reverse voltage, current rating, and recovery characteristics. The forward voltage specification is higher at 1.25 V compared to 950 mV for the main part, which may result in increased power dissipation in high-current applications. The operating temperature range extends to -65°C, providing broader low-temperature capability. Packaging is Bulk format. RoHS compliance status is not specified in the provided data.

All substitute parts are Active product status and suitable for direct component selection based on electrical and mechanical compatibility.

Frequently Asked Questions (FAQ)

Q: Can EGP30F be used as a direct replacement for HER304G-TP?

A: EGP30F meets the critical electrical parameters of 300 V reverse voltage, 3 A average rectified current, 50 ns reverse recovery time, and fast recovery speed classification. Both components use the DO-201AD axial through-hole package. The primary difference is forward voltage specification (1.25 V versus 950 mV), which affects power dissipation. EGP30F is suitable for applications where the higher forward voltage is acceptable within thermal design constraints.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel (TR) packaging supplies components on continuous tape wound on reels, suitable for automated assembly equipment. Cut Tape (CT) packaging supplies components on tape segments cut to specific lengths, suitable for manual assembly or smaller production runs. Both formats contain identical components in the same DO-201AD package. Selection depends on assembly process requirements, not electrical performance.

Q: Are all substitute parts RoHS3 compliant?

A: HER304G and UF5403-E3/54 are explicitly specified as ROHS3 compliant. EGP30F RoHS compliance status is not provided in the available data. For applications requiring RoHS3 compliance certification, HER304G or UF5403-E3/54 are recommended.

Q: What does reverse recovery time (trr) of 50 ns indicate?

A: Reverse recovery time is the interval required for a diode to switch from forward conduction to reverse blocking when the applied voltage reverses polarity. All listed parts specify 50 ns trr, indicating identical switching speed performance suitable for fast recovery rectification applications.

Q: Can these parts be used interchangeably in existing circuit designs?

A: All substitute parts share identical reverse voltage (300 V), average rectified current (3 A), reverse recovery time (50 ns), and DO-201AD through-hole package specifications. Interchangeability is determined by forward voltage tolerance and operating temperature requirements specific to the circuit design. Forward voltage variations (950 mV to 1.25 V) may affect power dissipation and thermal performance in high-current applications.

Q: What is the significance of the -55°C to 150°C operating temperature range?

A: This range specifies the junction temperature limits within which the diode maintains specified electrical characteristics. All parts except EGP30F specify -55°C to 150°C. EGP30F extends the lower limit to -65°C, providing enhanced performance in colder operating environments. Selection depends on the thermal environment of the application.