HER203G-TP Equivalent & Substitute Parts

Part Overview

The HER203G-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 features fast recovery characteristics with a reverse recovery time of 50 ns and is compliant with RoHS3 and REACH standards. The part carries a "Not For New Designs" product status, making identification of equivalent and substitute components essential for ongoing production support and design continuity.

Key Parameters

Parameter	Value	Unit
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 HER203G-TP is determined by the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): 200 V minimum
Current - Average Rectified (Io): 2 A minimum
Mounting Type: Through Hole
Package / Case: DO-15 or DO-204AC (DO-15) equivalent
Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)
Reverse Recovery Time (trr): ≤ 50 ns preferred
Operating Temperature Range: -55°C to 150°C minimum

Parametric Equivalents are parts that match all critical electrical specifications and package requirements. These parts are direct replacements with identical performance characteristics.

Similar Substitutes are parts that meet the minimum voltage and current requirements but may differ in secondary parameters such as forward voltage, reverse recovery time, or reverse leakage current. These parts are functionally compatible but with performance variations.

Reduced Current Substitutes are parts rated for 1.5 A average rectified current. These are suitable only for applications where the circuit current demand does not exceed 1.5 A, representing a derating scenario.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [V]	Speed	trr [ns]	Ir @ Vr [µA]	Package	Product Status
HER203G-TP	Micro Commercial Co	200	2	1 @ 2 A	Fast Recovery ≤ 500ns	50	5 @ 200 V	DO-15	Not For New Designs
HER203G	Taiwan Semiconductor Corporation	200	2	1 @ 2 A	Fast Recovery ≤ 500ns	50	5 @ 200 V	DO-204AC (DO-15)	Active
HER203G A0G	Taiwan Semiconductor Corporation	200	2	1 @ 2 A	Fast Recovery ≤ 500ns	50	5 @ 200 V	DO-204AC (DO-15)	Active
UF202G_R2_00001	Panjit International Inc.	200	2	1 @ 2 A	Fast Recovery ≤ 500ns	50	1 @ 200 V	DO-15	Active
EGP20D	onsemi	200	2	950 mV @ 2 A	Fast Recovery ≤ 500ns	50	5 @ 200 V	DO-15	Not For New Designs
PR1503-T	Diodes Incorporated	200	1.5	1.2 @ 1.5 A	Fast Recovery ≤ 500ns	150	5 @ 200 V	DO-15	Active
1N5393G B0G	Taiwan Semiconductor Corporation	200	1.5	1 @ 1.5 A	Standard Recovery >500ns	—	5 @ 200 V	DO-204AC (DO-15)	Active

Engineering Selection Recommendations

Parametric Equivalents (Direct Replacements):

HER203G, HER203G A0G, and UF202G_R2_00001 are parametric equivalents of the HER203G-TP. These parts satisfy all electrical and mechanical requirements with identical or superior performance characteristics. HER203G and HER203G A0G are manufactured by Taiwan Semiconductor Corporation with Active product status, providing long-term availability. UF202G_R2_00001 from Panjit International Inc. offers superior reverse leakage performance (1 µA vs. 5 µA) while maintaining all other specifications. All three are RoHS3 compliant and REACH unaffected.

Similar Substitutes (Functional Compatibility with Performance Variations):

EGP20D from onsemi is a functional substitute with identical voltage, current, and recovery characteristics. Forward voltage is marginally lower at 950 mV compared to 1 V, representing improved efficiency. EGP20D carries "Not For New Designs" status, similar to the main part. This substitute is suitable for applications where the lower forward voltage drop is beneficial.

Reduced Current Substitutes (Derating Applications):

PR1503-T from Diodes Incorporated and 1N5393G B0G from Taiwan Semiconductor Corporation are rated for 1.5 A average rectified current. These parts are suitable only for circuits where the maximum current demand does not exceed 1.5 A. PR1503-T maintains fast recovery characteristics (≤ 500ns) with a reverse recovery time of 150 ns. 1N5393G B0G operates with standard recovery characteristics (>500ns), making it unsuitable for high-frequency switching applications. Both parts are Active status products with long-term availability.

Compliance and Regulatory Considerations:

All listed parts are RoHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements. Moisture Sensitivity Level (MSL) is 1 (Unlimited) for all parts except EGP20D, which is Not Applicable, indicating no moisture sensitivity concerns for any substitute.

Frequently Asked Questions (FAQ)

Q: Can HER203G-TP be replaced with PR1503-T or 1N5393G B0G?

A: These parts are suitable only if the circuit current requirement does not exceed 1.5 A. Both are rated for 1.5 A average rectified current, representing a derating from the original 2 A specification. Verify circuit current demands before substitution.

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), while HER203G A0G is supplied in Cut Tape (CT). HER203G A0G has higher inventory availability (8349 Pcs vs. 944 Pcs).

Q: Is EGP20D a direct replacement for HER203G-TP?

A: EGP20D is a functional substitute with identical voltage, current, and recovery specifications. Forward voltage is 950 mV versus 1 V, representing a minor improvement. Both parts carry "Not For New Designs" status. EGP20D is suitable for direct replacement in existing designs.

Q: Why is UF202G_R2_00001 preferred over other substitutes?

A: UF202G_R2_00001 matches all electrical specifications of HER203G-TP while offering superior reverse leakage performance (1 µA vs. 5 µA at 200 V). It maintains Active product status, ensuring long-term availability. This part is recommended for applications sensitive to leakage current.

Q: Can 1N5393G B0G be used in high-frequency switching applications?

A: No. 1N5393G B0G operates with standard recovery characteristics (>500ns), making it unsuitable for high-frequency switching. The original HER203G-TP and its parametric equivalents feature fast recovery (≤ 500ns), which is required for switching applications. PR1503-T maintains fast recovery characteristics and is the preferred reduced-current substitute for switching circuits.

Q: Are all substitute parts available in the same package?

A: All parts use DO-15 or DO-204AC (DO-15) equivalent packages, ensuring mechanical compatibility. Packaging format differs: HER203G-TP and PR1503-T are supplied in Tape & Reel (TR), while HER203G A0G is supplied in Cut Tape (CT), and EGP20D is supplied in Cut Tape (CT). Verify packaging requirements for your procurement process.

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

A: HER203G-TP, HER203G, HER203G A0G, and UF202G_R2_00001 operate from -55°C to 150°C. PR1503-T and EGP20D extend the lower temperature limit to -65°C. All parts support the original -55°C to 150°C range, ensuring thermal compatibility.

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