HER103S-TP Equivalent & Substitute Parts

Part Overview

The HER103S-TP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 200 V DC reverse voltage and 1 A average rectified current. This component is classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing design support and procurement continuity. The diode features fast recovery characteristics with a 50 ns reverse recovery time and is housed in an axial through-hole package suitable for PCB integration.

Substiute Parts

HER103S-TP

Micro Commercial CoIn Stock: 1042HER103S-TP Datasheet

Current PartRFQ

EU 1ZV

Sanken Electric USA Inc.In Stock: 792EU 1ZV Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the HER103S-TP is determined by the following critical electrical and mechanical parameters:

Voltage Rating: The substitute part must maintain a DC reverse voltage rating of 200 V or greater to ensure safe operation within the original circuit design envelope.

Current Rating: The substitute part must support the average rectified current requirement. The HER103S-TP is rated for 1 A; substitute parts with equal or greater current capacity are acceptable.

Recovery Characteristics: Fast recovery operation (≤ 500 ns for currents > 200 mA) is a defining characteristic of this diode family and must be preserved in substitute selections.

Package and Mounting: The axial through-hole package configuration is mandatory for mechanical and electrical compatibility with existing PCB layouts.

Temperature Range: The operating junction temperature range must encompass the original specification or be compatible with the application's thermal environment.

The EU 1ZV, manufactured by Sanken Electric USA Inc., meets the voltage and package requirements but operates at a reduced current rating of 500 mA, making it suitable only for applications where the full 1 A capacity is not required.

Parameter Comparison

Engineering Selection Recommendations

The EU 1ZV is an active product with current manufacturer support, addressing the obsolescence status of the HER103S-TP. Both components maintain identical 200 V reverse voltage ratings and axial through-hole package configurations, ensuring mechanical compatibility.

The primary distinction is the current rating: the EU 1ZV operates at 500 mA versus the HER103S-TP's 1 A specification. This substitution is valid only for applications where the circuit load current does not exceed 500 mA. Circuits requiring the full 1 A capacity must source alternative components with matching current specifications.

Both parts comply with RoHS directives and operate within acceptable temperature ranges for standard industrial applications. The EU 1ZV exhibits superior reverse leakage characteristics (10 µA versus 5 mA) and an extended upper temperature limit of 150°C, providing enhanced performance margins in certain thermal environments.

Frequently Asked Questions (FAQ)

Q: Can the EU 1ZV directly replace the HER103S-TP in all applications?

A: Direct replacement is valid only if the circuit's average rectified current requirement does not exceed 500 mA. Applications requiring 1 A operation require alternative sourcing.

Q: What is the significance of the reverse recovery time difference between these parts?

A: The HER103S-TP exhibits 50 ns recovery time while the EU 1ZV operates at 400 ns. Both fall within the fast recovery classification (≤ 500 ns). The faster recovery of the HER103S-TP may provide marginal advantages in high-frequency switching applications, but the EU 1ZV remains suitable for standard rectification circuits.

Q: Are the packaging and mounting configurations identical?

A: Both components use axial through-hole packages. Physical dimensions and PCB footprints are compatible, allowing direct mechanical substitution without layout modifications.

Q: Does the EU 1ZV meet the same compliance standards?

A: The EU 1ZV is RoHS Compliant, while the HER103S-TP is ROHS3 Compliant. Both meet current environmental and safety standards applicable to rectifier diodes.

Q: What is the impact of the extended temperature range on the EU 1ZV?

A: The EU 1ZV operates from -40°C to 150°C, compared to the HER103S-TP's -55°C to 125°C range. The EU 1ZV provides a higher upper temperature limit, suitable for applications in elevated thermal environments, though the lower temperature limit is less stringent.

Q: How does the reverse leakage current affect circuit performance?

A: The EU 1ZV exhibits lower reverse leakage (10 µA) compared to the HER103S-TP (5 mA). Lower leakage reduces standby power consumption and improves circuit efficiency in applications sensitive to leakage current.