HER203-TP Equivalent & Substitute Parts

Part Overview

The HER203-TP is a general-purpose rectifier diode rated for 200 V DC reverse voltage and 2 A average rectified current in a DO-15 through-hole package. Manufactured by Micro Commercial Co, this component is classified as obsolete. Due to its obsolete status, equivalent and substitute parts from active manufacturers are necessary to maintain design continuity and ensure ongoing component availability for production and repair applications.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	200 V
Current - Average Rectified (Io)	2 A
Voltage - Forward (Vf) (Max) @ If	1 V @ 2 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)
Reverse Recovery Time (trr)	50 ns
Current - Reverse Leakage @ Vr	5 µA @ 200 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

Substitution of the HER203-TP is determined by the following critical parameters:

Voltage Rating: All substitute parts must maintain a minimum DC reverse voltage rating of 200 V to ensure safe operation within the original circuit design specifications.

Current Rating: The average rectified current capacity must be sufficient for the application. Substitutes with equal or greater current ratings (2 A or higher) are classified as parametric equivalents. Substitutes with lower current ratings (1.5 A) are classified as similar alternatives and require circuit evaluation.

Recovery Characteristics: Fast recovery performance (≤ 500ns, > 200mA) and reverse recovery time (trr) specifications determine switching behavior. Parts with matching or superior recovery characteristics maintain equivalent performance.

Package Compatibility: All substitute parts utilize DO-15 or DO-204AC (DO-15) axial through-hole packages, ensuring mechanical and electrical compatibility with existing PCB layouts.

Compliance & Status: Active product status and ROHS3 compliance are required for new production applications. Obsolete parts are unsuitable for ongoing procurement.

Parameter Comparison

Parameter	HER203-TP (Main)	HER203G	HER203G A0G	UF202G_R2_00001	PR1503-T
Manufacturer	Micro Commercial Co	Taiwan Semiconductor Corporation	Taiwan Semiconductor Corporation	Panjit International Inc.	Diodes Incorporated
Product Status	Obsolete	Active	Active	Active	Active
Voltage - DC Reverse (Vr) (Max)	200 V	200 V	200 V	200 V	200 V
Current - Average Rectified (Io)	2 A	2 A	2 A	2 A	1.5 A
Voltage - Forward (Vf) (Max) @ If	1 V @ 2 A	1 V @ 2 A	1 V @ 2 A	1 V @ 2 A	1.2 V @ 1.5 A
Speed	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA
Reverse Recovery Time (trr)	50 ns	50 ns	50 ns	50 ns	150 ns
Current - Reverse Leakage @ Vr	5 µA @ 200 V	5 µA @ 200 V	5 µA @ 200 V	1 µA @ 200 V	5 µA @ 200 V
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	DO-204AC, DO-15, Axial	DO-204AC, DO-15, Axial	DO-204AC, DO-15, Axial	DO-204AC, DO-15, Axial	DO-204AC, DO-15, Axial
Operating Temperature - Junction	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C	-65°C ~ 150°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging Type	-	Tape & Reel (TR)	Cut Tape (CT)	Tape & Reel (TR)	Tape & Reel (TR)

Engineering Selection Recommendations

Parametric Equivalents (Direct Substitutes):

HER203G, HER203G A0G, and UF202G_R2_00001 are parametric equivalents to the HER203-TP. These parts maintain identical voltage ratings (200 V), current ratings (2 A), forward voltage characteristics (1 V @ 2 A), and recovery time specifications (50 ns). All three are manufactured by active suppliers with ROHS3 compliance. HER203G A0G offers the highest inventory availability (8,349 pcs) in Cut Tape packaging. UF202G_R2_00001 provides superior reverse leakage performance (1 µA vs. 5 µA). These parts are suitable for direct replacement in new production and repair applications.

Similar Alternative (Reduced Current Rating):

PR1503-T is a similar alternative manufactured by Diodes Incorporated with an active product status and ROHS3 compliance. This part maintains the 200 V voltage rating and fast recovery characteristics but operates at a reduced average rectified current of 1.5 A compared to the 2 A rating of the main part. The reverse recovery time is 150 ns, which is longer than the 50 ns specification of the HER203-TP. PR1503-T is suitable for applications where the circuit current demand does not exceed 1.5 A and where the extended recovery time does not impact system performance.

Packaging Considerations:

HER203G and PR1503-T are supplied in Tape & Reel (TR) packaging, suitable for automated assembly processes. HER203G A0G is supplied in Cut Tape (CT) packaging, suitable for manual or semi-automated assembly. All parts utilize DO-15 or DO-204AC (DO-15) axial through-hole packages with identical mechanical dimensions and pin configurations.

Frequently Asked Questions (FAQ)

Q: Can HER203G be used as a direct replacement for HER203-TP?

A: Yes. HER203G is a parametric equivalent with identical voltage (200 V), current (2 A), forward voltage (1 V @ 2 A), and recovery time (50 ns) specifications. Both parts are ROHS3 compliant and use DO-15 through-hole packaging. HER203G is manufactured by Taiwan Semiconductor Corporation with active product status.

Q: What is the difference between HER203G and HER203G A0G?

A: Both parts are parametric equivalents with identical electrical specifications. The primary difference is packaging: HER203G is supplied in Tape & Reel (TR) format, while HER203G A0G is supplied in Cut Tape (CT) format. HER203G A0G has significantly higher inventory availability (8,349 pcs vs. 944 pcs).

Q: Can PR1503-T replace HER203-TP in all applications?

A: PR1503-T is a similar alternative, not a parametric equivalent. It has a reduced current rating of 1.5 A compared to the 2 A rating of HER203-TP, and a longer reverse recovery time of 150 ns compared to 50 ns. PR1503-T is suitable only for applications where the circuit current demand does not exceed 1.5 A and where the extended recovery time is acceptable.

Q: Does UF202G_R2_00001 offer any advantages over HER203G?

A: UF202G_R2_00001 maintains all electrical specifications of HER203G but provides superior reverse leakage performance (1 µA @ 200 V vs. 5 µA @ 200 V). This lower leakage current may benefit applications with stringent leakage requirements. Both parts are parametric equivalents suitable for direct replacement.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed (HER203G, HER203G A0G, UF202G_R2_00001, and PR1503-T) are ROHS3 compliant and suitable for applications requiring environmental compliance certification.

Q: What is the operating temperature range for substitute parts?

A: HER203G, HER203G A0G, and UF202G_R2_00001 operate from -55°C to 150°C, matching the HER203-TP specification. PR1503-T operates from -65°C to 150°C, providing an extended lower temperature range.

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

A: Yes. All substitute parts use DO-15 or DO-204AC (DO-15) axial through-hole packages with identical mechanical dimensions and pin configurations. No PCB layout modifications are required for substitution.

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