HER207G-AP Equivalent & Substitute Parts

Part Overview

The HER207G-AP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 800 V DC reverse voltage and 2 A average rectified current in a DO-15 through-hole package. This component is classified as "Not For New Designs," indicating it has reached end-of-life status. Identifying equivalent and substitute parts is necessary for ongoing maintenance, repair, and legacy system support where the original component is no longer readily available or where design flexibility permits alternative sourcing.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	800 V
Current - Average Rectified (Io)	2 A
Voltage - Forward (Vf) (Max) @ If	1.7 V @ 2 A
Speed Classification	Fast Recovery ≤ 500 ns, > 200 mA (Io)
Reverse Recovery Time (trr)	75 ns
Current - Reverse Leakage @ Vr	5 µA @ 800 V
Mounting Type	Through Hole
Package / Case	DO-204AC, DO-15, Axial
Operating Temperature - Junction	-55°C ~ 150°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the HER207G-AP are grouped based on the following substitution criteria:

Parametric Equivalents maintain identical electrical specifications across all critical parameters: 800 V reverse voltage, 2 A average rectified current, 1.7 V forward voltage at 2 A, fast recovery characteristics with 75 ns reverse recovery time, and identical reverse leakage current. These parts are direct functional replacements with no derating required.

Similar Substitutes share the same 800 V reverse voltage rating and through-hole DO-15 package configuration but operate at reduced current ratings (1.5 A instead of 2 A). These parts are suitable only in applications where the circuit current demand does not exceed 1.5 A. Recovery speed characteristics vary between standard and fast recovery types within this group.

All substitute candidates maintain compliance with RoHS3 and REACH requirements, operate within the same temperature range (-55°C to 150°C), and are packaged in compatible DO-204AC/DO-15 axial configurations.

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io (A)	Vf @ If	Speed	trr (ns)	Ir @ Vr	Product Status
HER207G-AP	Micro Commercial Co	800 V	2	1.7 V @ 2 A	Fast Recovery ≤ 500 ns	75	5 µA @ 800 V	Not For New Designs
HER207G A0G	Taiwan Semiconductor Corporation	800 V	2	1.7 V @ 2 A	Fast Recovery ≤ 500 ns	75	5 µA @ 800 V	Active
FR156G B0G	Taiwan Semiconductor Corporation	800 V	1.5	1.3 V @ 1.5 A	Fast Recovery ≤ 500 ns	500	5 µA @ 800 V	Active
1N5398G A0G	Taiwan Semiconductor Corporation	800 V	1.5	1 V @ 1.5 A	Standard Recovery > 500 ns	—	5 µA @ 800 V	Active

Engineering Selection Recommendations

Parametric Equivalent Selection: The HER207G A0G manufactured by Taiwan Semiconductor Corporation is the direct parametric equivalent to the HER207G-AP. This part maintains identical electrical performance across all critical specifications including 2 A current rating, 75 ns reverse recovery time, and 1.7 V forward voltage at rated current. The HER207G A0G carries Active product status and is ROHS3 compliant, making it suitable for both new designs and legacy system replacements where the original part is unavailable.

Similar Substitute Selection: The FR156G B0G and 1N5398G A0G are suitable substitutes only in applications where circuit current requirements do not exceed 1.5 A. Both parts maintain the 800 V reverse voltage rating and through-hole package compatibility. The FR156G B0G offers fast recovery characteristics (500 ns trr) comparable to the original part, while the 1N5398G A0G operates with standard recovery speed. Both alternatives carry Active product status and full compliance certifications.

Compliance Considerations: All substitute parts listed maintain ROHS3 compliance, REACH unaffected status, and identical moisture sensitivity levels (MSL 1 - Unlimited). Operating temperature ranges remain consistent across all candidates at -55°C to 150°C.

Frequently Asked Questions (FAQ)

Q: Can the HER207G A0G directly replace the HER207G-AP without circuit modification?

A: Yes. The HER207G A0G is a parametric equivalent with identical electrical specifications. No circuit modification or derating is required. Both parts share the same 800 V reverse voltage, 2 A current rating, forward voltage characteristics, and fast recovery performance.

Q: What is the primary limitation when using FR156G B0G or 1N5398G A0G as substitutes?

A: Both parts are rated for 1.5 A average rectified current, compared to the 2 A rating of the original HER207G-AP. These substitutes are suitable only in circuits where the maximum average rectified current does not exceed 1.5 A. Exceeding this current rating will result in component overstress and potential failure.

Q: Are the DO-15 and DO-204AC package designations interchangeable?

A: Yes. DO-15 and DO-204AC refer to the same physical package configuration. Both designations describe an axial through-hole diode package with identical pin spacing and mounting characteristics. All substitute parts listed use compatible package geometries.

Q: Do the substitute parts require different PCB footprints or mounting procedures?

A: No. All substitute parts maintain through-hole axial package configuration identical to the original HER207G-AP. PCB footprints, lead spacing, and mounting procedures remain unchanged.

Q: What is the significance of the "Not For New Designs" status of the HER207G-AP?

A: This designation indicates the part has reached end-of-life and is no longer recommended for new product development. For legacy system maintenance and repair, the part remains functional. For new designs or long-term production, the HER207G A0G (Active status) is the recommended alternative.

Q: How do the recovery speed characteristics affect circuit performance?

A: The HER207G-AP and FR156G B0G both feature fast recovery characteristics (≤ 500 ns, 75 ns and 500 ns trr respectively), suitable for high-frequency switching applications. The 1N5398G A0G operates with standard recovery speed (> 500 ns), appropriate for lower-frequency rectification circuits. Selection depends on the specific switching frequency requirements of the application.

Q: Are all substitute parts available in equivalent inventory quantities?

A: Inventory availability varies. The HER207G A0G (parametric equivalent) shows 998 pieces in stock. The FR156G B0G shows 847 pieces, and the 1N5398G A0G shows 697 pieces. Verify current inventory status with your supplier before finalizing component selection.

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