HER307G-AP Equivalent & Substitute Parts

Part Overview

The HER307G-AP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 800 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 design flexibility needs.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	800	V
Current - Average Rectified (Io)	3	A
Voltage - Forward (Vf) (Max) @ If	1.7 @ 3 A	V
Reverse Recovery Time (trr)	75	ns
Current - Reverse Leakage @ Vr	10 @ 800 V	µA
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Package / Case	DO-201AD, Axial	—
Mounting Type	Through Hole	—
Operating Temperature - Junction	-55 to 150	°C
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the HER307G-AP are identified based on strict equivalence of the following critical parameters:

Voltage Rating: 800 V DC reverse voltage (Vr) maximum
Current Rating: 3 A average rectified current (Io)
Forward Voltage: 1.7 V maximum at 3 A forward current
Recovery Characteristics: Fast recovery with 75 ns reverse recovery time (trr)
Reverse Leakage: 10 µA maximum at 800 V
Package: DO-201AD axial through-hole configuration
Compliance: RoHS3 compliant, REACH unaffected

The UF5407-E3/73 meets all these criteria and is therefore classified as a parametric equivalent. Both parts operate within identical electrical specifications and share the same physical package footprint, enabling direct substitution in circuit applications.

Parameter Comparison

Parameter	HER307G-AP (Micro Commercial Co)	UF5407-E3/73 (Vishay General Semiconductor)	Match Status
Voltage - DC Reverse (Vr) (Max)	800 V	800 V	Equivalent
Current - Average Rectified (Io)	3 A	3 A	Equivalent
Voltage - Forward (Vf) (Max) @ If	1.7 V @ 3 A	1.7 V @ 3 A	Equivalent
Reverse Recovery Time (trr)	75 ns	75 ns	Equivalent
Current - Reverse Leakage @ Vr	10 µA @ 800 V	10 µA @ 800 V	Equivalent
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Equivalent
Package / Case	DO-201AD, Axial	DO-201AD, Axial	Equivalent
Mounting Type	Through Hole	Through Hole	Equivalent
Operating Temperature - Junction	-55°C to 150°C	-55°C to 150°C	Equivalent
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
Capacitance @ Vr, F	50 pF @ 4V, 1MHz	36 pF @ 4V, 1MHz	Variant

Engineering Selection Recommendations

Both the HER307G-AP and UF5407-E3/73 are Active product status components with full RoHS3 compliance and REACH unaffected status. Selection between these parts is based on the following criteria:

HER307G-AP (Micro Commercial Co): Select when primary sourcing from Micro Commercial Co is required or when the 50 pF capacitance specification is a design requirement.

UF5407-E3/73 (Vishay General Semiconductor): Select when Vishay sourcing is preferred, when higher inventory availability is advantageous, or when the lower 36 pF capacitance specification is compatible with circuit requirements. This part is available in Cut Tape (CT) packaging.

Both parts satisfy identical electrical performance requirements for 800 V, 3 A rectification applications with fast recovery characteristics. The capacitance difference (50 pF versus 36 pF) is a minor variant that does not affect substitution eligibility for standard rectification circuits.

Frequently Asked Questions (FAQ)

Q: Can the UF5407-E3/73 be used as a direct replacement for the HER307G-AP?

A: Yes. Both parts are rated for 800 V reverse voltage, 3 A average rectified current, and share identical forward voltage, reverse recovery time, and reverse leakage specifications. The DO-201AD axial through-hole package is identical, enabling direct PCB footprint compatibility.

Q: What is the significance of the capacitance difference between these parts?

A: The HER307G-AP specifies 50 pF capacitance while the UF5407-E3/73 specifies 36 pF, both measured at 4 V and 1 MHz. This difference is a minor variant and does not affect substitution eligibility. Capacitance impact on circuit performance is application-dependent and should be evaluated within specific circuit context.

Q: Are both parts suitable for high-temperature applications?

A: Yes. Both parts operate across the identical junction temperature range of -55°C to 150°C, supporting applications requiring extended thermal operating windows.

Q: What packaging formats are available for these substitute parts?

A: The HER307G-AP is supplied in standard packaging format. The UF5407-E3/73 is available in Cut Tape (CT) packaging, which may influence procurement and handling procedures.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the HER307G-AP and UF5407-E3/73 are RoHS3 compliant and REACH unaffected, meeting identical regulatory requirements for electronic component applications.

Q: What is the reverse recovery time specification, and why is it important?

A: Both parts specify 75 ns reverse recovery time (trr), which defines the speed at which the diode transitions from forward conduction to reverse blocking. This fast recovery characteristic is essential for switching applications and power conversion circuits.

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