HER3003PT C0G Equivalent & Substitute Parts

Part Overview

The HER3003PT C0G is a diode array rectifier featuring a 1 Pair Common Cathode configuration rated for 200 V DC reverse voltage and 30A average rectified current per diode. This component is packaged in a TO-247-3 through-hole format and utilizes fast recovery technology with a 50 ns reverse recovery time. The HER3003PT C0G is discontinued at DiGi Electronics, necessitating identification of equivalent and substitute components that maintain functional compatibility within power conversion and rectification applications.

Key Parameters

Parameter	Value
Diode Configuration	1 Pair Common Cathode
Voltage - DC Reverse (Vr) (Max)	200 V
Current - Average Rectified (Io) (per Diode)	30A
Voltage - Forward (Vf) (Max) @ If	1 V @ 15 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)
Reverse Recovery Time (trr)	50 ns
Current - Reverse Leakage @ Vr	10 µA @ 200 V
Operating Temperature - Junction	-55°C ~ 150°C
Mounting Type	Through Hole
Package / Case	TO-247-3
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the HER3003PT C0G are evaluated based on the following critical parameters that determine functional compatibility:

Primary Matching Criteria:

Diode Configuration: 1 Pair Common Cathode
Voltage - DC Reverse (Vr) (Max): 200 V minimum
Package / Case: TO-247-3
Mounting Type: Through Hole
Technology: Standard (Fast Recovery)

Secondary Compatibility Factors:

Current - Average Rectified (Io): 30A or higher per diode
Voltage - Forward (Vf): Within acceptable operating range
Reverse Recovery Time (trr): Fast recovery characteristics
RoHS Status: ROHS3 Compliant
Operating Temperature Range: Suitable for application requirements

Substitutes are grouped into two categories: Direct Equivalents (matching all primary criteria including 30A current rating) and Functional Alternatives (meeting voltage and package requirements with reduced current ratings of 15A, suitable for applications not requiring full 30A capacity).

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io (per Diode)	Vf (Max) @ If	trr (ns)	Ir @ Vr	Tj (Max)	Package	Status
HER3003PT C0G	Taiwan Semiconductor Corporation	200 V	30A	1 V @ 15 A	50	10 µA @ 200 V	150°C	TO-247-3	Discontinued
HER3003PT	Taiwan Semiconductor Corporation	200 V	30A (DC)	1 V @ 15 A	50	10 µA @ 200 V	150°C	TO-247-3	Active
STTH6002CW	STMicroelectronics	200 V	30A	1.05 V @ 30 A	27	30 µA @ 200 V	175°C	TO-247-3	Active
APT30D20BCTG	Microchip Technology	200 V	30A	1.3 V @ 30 A	24	250 µA @ 200 V	175°C	TO-247-3	Active
MUR3020WTG	onsemi	200 V	15A	1.05 V @ 15 A	35	10 µA @ 200 V	175°C	TO-247-3	Obsolete
STTH3002CW	STMicroelectronics	200 V	15A	1.05 V @ 15 A	22	20 µA @ 200 V	175°C	TO-247-3	Active
STTH30W02CW	STMicroelectronics	200 V	15A	1.2 V @ 15 A	25	10 µA @ 200 V	175°C	TO-247-3	Active

Engineering Selection Recommendations

Direct Equivalent (Recommended Primary Choice):

The HER3003PT (non-C0G variant) from Taiwan Semiconductor Corporation is the direct equivalent to the discontinued HER3003PT C0G. This part maintains identical electrical specifications including 30A current rating, 200 V reverse voltage, and TO-247-3 packaging. The part is currently Active in product status with 855 pieces in stock. This selection eliminates any performance variation and is suitable for direct replacement in existing designs.

Primary Substitute (30A Current Rating):

The STTH6002CW from STMicroelectronics is a full-current substitute rated for 30A per diode at 200 V reverse voltage in TO-247-3 packaging. This part is Active in product status with 2214 pieces available. The STTH6002CW features improved reverse recovery time (27 ns versus 50 ns) and higher maximum junction temperature (175°C versus 150°C), providing enhanced thermal performance. Forward voltage is slightly elevated at 1.05 V @ 30 A compared to 1 V @ 15 A on the original part.

The APT30D20BCTG from Microchip Technology is an alternative 30A substitute meeting the same voltage and package requirements. This part is Active with 1530 pieces in stock. The APT30D20BCTG exhibits superior reverse recovery time (24 ns) and higher junction temperature rating (175°C). Forward voltage is 1.3 V @ 30 A, representing a higher conduction loss characteristic.

Functional Alternative (15A Current Rating):

The STTH3002CW from STMicroelectronics and STTH30W02CW from STMicroelectronics are functional alternatives rated for 15A per diode at 200 V reverse voltage. Both parts are Active in product status with 4980 and 1210 pieces respectively. These substitutes are suitable for applications where the full 30A capacity is not required. Both maintain TO-247-3 packaging and feature improved reverse recovery times (22 ns and 25 ns respectively) and higher junction temperature ratings (175°C).

The MUR3020WTG from onsemi is a 15A alternative with Obsolete product status. This part is not recommended for new designs despite high inventory availability (30580 pieces).

Compliance and Certification:

All recommended substitutes maintain ROHS3 compliance and REACH Unaffected status, matching the original part's regulatory requirements. All parts are classified under ECCN EAR99 and HTSUS 8541.10.0080.

Frequently Asked Questions (FAQ)

Q: Can the STTH6002CW directly replace the HER3003PT C0G in all applications?

A: The STTH6002CW is a direct current-rated substitute (30A @ 200 V) in identical TO-247-3 packaging. The primary differences are improved reverse recovery time (27 ns versus 50 ns) and higher maximum junction temperature (175°C versus 150°C). These characteristics are generally beneficial in power conversion applications. Forward voltage is slightly higher at 1.05 V @ 30 A. Verification of thermal and conduction loss performance in the specific application is necessary to confirm suitability.

Q: What is the difference between the HER3003PT and HER3003PT C0G?

A: The HER3003PT C0G is the discontinued variant. The HER3003PT (without C0G designation) is the active equivalent part from Taiwan Semiconductor Corporation with identical electrical specifications. This represents the direct replacement option.

Q: Can I use a 15A rated diode array as a substitute for the 30A HER3003PT C0G?

A: The STTH3002CW and STTH30W02CW are 15A-rated alternatives in TO-247-3 packaging at 200 V reverse voltage. These substitutes are suitable only for applications where the circuit design does not require the full 30A current capacity per diode. Use of a lower-rated component in a 30A application will result in thermal stress and potential component failure.

Q: What is the significance of reverse recovery time differences between substitutes?

A: Reverse recovery time (trr) affects switching losses and electromagnetic interference characteristics in rectifier applications. The HER3003PT C0G has a 50 ns trr. Substitutes such as STTH6002CW (27 ns) and APT30D20BCTG (24 ns) feature faster recovery, reducing switching losses. Faster recovery times are generally advantageous in high-frequency switching applications.

Q: Are all substitute parts RoHS compliant?

A: All recommended substitute parts maintain ROHS3 compliance status, matching the original HER3003PT C0G specification. This ensures compatibility with RoHS-regulated applications and procurement requirements.

Q: What is the impact of forward voltage differences on circuit performance?

A: Forward voltage (Vf) directly affects conduction losses in rectifier circuits. The original part specifies 1 V @ 15 A. Substitutes vary: STTH6002CW at 1.05 V @ 30 A, APT30D20BCTG at 1.3 V @ 30 A, and 15A alternatives at 1.05 V to 1.2 V @ 15 A. Higher forward voltage increases power dissipation and heat generation. Circuit thermal design must account for these differences.

Q: Why is the MUR3020WTG listed as Obsolete?

A: The MUR3020WTG from onsemi carries Obsolete product status, indicating discontinued manufacturing and limited long-term availability. Although inventory is currently available (30580 pieces), this part is not recommended for new designs or long-term production applications. Active alternatives such as STTH3002CW are preferred for new implementations.

Q: What packaging considerations apply to these substitutes?

A: All recommended substitutes utilize TO-247-3 through-hole packaging, maintaining mechanical and thermal interface compatibility with the original HER3003PT C0G. Mounting footprints, lead spacing, and thermal pad dimensions are identical across all listed parts. No PCB redesign is required for package compatibility.

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