HER307-AP Equivalent & Substitute Parts

Part Overview

The HER307-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 part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The HER307-AP features fast recovery characteristics with a reverse recovery time of 75 ns, suitable for standard rectification applications requiring moderate switching speeds.

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
Capacitance @ Vr, F	50 @ 4V, 1MHz	pF
Package / Case	DO-201AD, Axial	—
Mounting Type	Through Hole	—
Operating Temperature - Junction	-55 to 150	°C
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the HER307-AP is determined by strict equivalence across the following critical parameters:

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

All substitute parts listed maintain these electrical and mechanical specifications. Minor variations in junction capacitance (35–50 pF @ 4V, 1MHz) do not affect functional substitution. Packaging format differences (Tape & Box, Cut Tape) represent logistical variations only and do not impact electrical performance or board-level compatibility.

Parameter Comparison

Part Number	Manufacturer	Product Status	Vr (Max) [V]	Io [A]	Vf (Max) @ If [V]	trr [ns]	Ir @ Vr [µA]	Package	Inventory [Pcs]
HER307-AP	Micro Commercial Co	Obsolete	800	3	1.7 @ 3 A	75	10 @ 800 V	DO-201AD, Axial	923
HER307G-AP	Micro Commercial Co	Active	800	3	1.7 @ 3 A	75	10 @ 800 V	DO-201AD, Axial	691
UF5407GP-AP	Micro Commercial Co	Active	800	3	1.7 @ 3 A	75	10 @ 800 V	DO-201AD, Axial	716
HER307G A0G	Taiwan Semiconductor Corporation	Active	800	3	1.7 @ 3 A	75	10 @ 800 V	DO-201AD, Axial	1168
UF5407-E3/73	Vishay General Semiconductor - Diodes Division	Active	800	3	1.7 @ 3 A	75	10 @ 800 V	DO-201AD, Axial	4300

Engineering Selection Recommendations

HER307G-AP (Micro Commercial Co, Active Status): Direct successor to the obsolete HER307-AP from the same manufacturer. Maintains identical electrical specifications and DO-201AD package. Active product status ensures long-term availability and supply chain stability. ROHS3 compliant.

UF5407GP-AP (Micro Commercial Co, Active Status): Parametric equivalent with identical electrical performance. Supplied in Tape & Box packaging format. Active product status. ROHS3 compliant. Suitable for applications requiring bulk component handling.

HER307G A0G (Taiwan Semiconductor Corporation, Active Status): Parametric equivalent from alternative manufacturer. Maintains all critical electrical parameters. Highest current inventory (1168 pcs). Active product status. ROHS3 compliant. REACH Unaffected designation.

UF5407-E3/73 (Vishay General Semiconductor - Diodes Division, Active Status): Parametric equivalent from established semiconductor manufacturer. Supplied in Cut Tape packaging format. Largest available inventory (4300 pcs). Active product status. ROHS3 compliant. REACH Unaffected designation.

Selection among these substitutes depends on procurement requirements, packaging preferences, and supply chain considerations. All parts are electrically and mechanically interchangeable with the HER307-AP.

Frequently Asked Questions (FAQ)

Q: Can HER307G-AP be used as a direct replacement for HER307-AP?

A: Yes. HER307G-AP is the active-status successor from Micro Commercial Co with identical electrical specifications (800 V, 3 A, 75 ns recovery time) and DO-201AD package configuration. It is a direct substitute.

Q: What is the difference between UF5407GP-AP and UF5407-E3/73?

A: Both are parametric equivalents with identical electrical performance. The primary difference is packaging format: UF5407GP-AP is supplied in Tape & Box format, while UF5407-E3/73 is supplied in Cut Tape format. Electrical functionality is identical.

Q: Are there any performance differences between manufacturers?

A: All listed substitutes maintain the same critical electrical parameters: 800 V reverse voltage, 3 A average rectified current, 1.7 V forward voltage drop, and 75 ns reverse recovery time. Minor variations in junction capacitance (35–50 pF) do not affect functional performance in standard rectification applications.

Q: Is the DO-201AD package compatible across all substitute parts?

A: Yes. All substitute parts use the DO-201AD axial through-hole package. Board-level footprints and mounting procedures are identical.

Q: What is the significance of "Active" versus "Obsolete" product status?

A: Active status indicates the manufacturer continues production and supports the part for new designs. Obsolete status indicates the manufacturer has discontinued production. The HER307-AP is obsolete; all listed substitutes are active, ensuring procurement continuity.

Q: Are all substitutes ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 Compliant designation, meeting environmental and regulatory requirements.

Q: Which substitute has the best inventory availability?

A: UF5407-E3/73 (Vishay) has the highest inventory at 4300 pcs, followed by HER307G A0G (Taiwan Semiconductor Corporation) at 1168 pcs.

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