SS23LHMHG Schottky Diode Equivalent & Substitute Parts

Part Overview

The SS23LHMHG is an active Schottky rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 30V DC reverse voltage and 2A average rectified current in a Sub SMA surface mount package. This component is designed for fast recovery applications with forward voltage of 500 mV at 2A and operates across a junction temperature range of -55°C to 150°C. The part carries AEC-Q101 automotive qualification and is ROHS3 compliant.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter ranges. Alternative sources may be required due to supply availability, lead time considerations, or design revision requirements while maintaining functional equivalence in the application circuit.

Substiute Parts

SS23LHMHG

Taiwan Semiconductor CorporationIn Stock: 1042SS23LHMHG Datasheet

Current PartRFQ

SL03-GS18

Vishay General Semiconductor - Diodes DivisionIn Stock: 25204SL03-GS18 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SS23LHMHG is determined by the following critical parameters:

Voltage Rating Compatibility: The substitute part must maintain a DC reverse voltage rating (Vr) of 30V or greater to ensure equivalent blocking capability.

Current Rating Compatibility: The substitute part must support the average rectified current (Io) requirement. The SS23LHMHG is rated for 2A; substitute parts with equal or greater current ratings are functionally equivalent.

Package and Mounting Compatibility: Both the main part and substitute must use the DO-219AB package with surface mount technology to ensure mechanical and thermal compatibility with the PCB layout and assembly process.

Technology and Speed Characteristics: The substitute must employ Schottky diode technology with fast recovery characteristics (≤ 500ns, > 200mA) to maintain switching performance in the application circuit.

Compliance and Qualification: The substitute part must maintain ROHS3 compliance and preferably carry equivalent automotive qualification (AEC-Q101) for applications requiring automotive-grade components.

The SL03-GS18 manufactured by Vishay General Semiconductor meets these substitution criteria with equivalent voltage rating, compatible package, matching technology, and compliant certifications.

Parameter Comparison

Engineering Selection Recommendations

Primary Application Suitability: The SS23LHMHG remains the specified component for applications requiring the full 2A current rating and extended junction temperature operation to 150°C. This part is active in production with AEC-Q101 automotive qualification.

Substitute Application Scope: The SL03-GS18 is suitable for applications where the current requirement does not exceed 1.1A and the maximum junction temperature requirement does not exceed 125°C. The substitute part maintains equivalent voltage rating, package compatibility, and fast recovery characteristics. Both parts are ROHS3 compliant and carry unlimited moisture sensitivity rating.

Compliance Considerations: Both parts are ROHS3 compliant and REACH unaffected, meeting environmental regulatory requirements. The main part carries explicit AEC-Q101 automotive qualification; the substitute part status for automotive qualification is not specified in the provided parameters.

Thermal and Current Derating: Applications operating at the upper thermal limits or requiring sustained 2A operation must use the SS23LHMHG. The SL03-GS18 is appropriate for lower current applications where the 1.1A rating is sufficient.

Frequently Asked Questions (FAQ)

Q: Can the SL03-GS18 directly replace the SS23LHMHG in all applications?

A: The SL03-GS18 is a functional substitute only for applications where the average rectified current does not exceed 1.1A and the maximum junction temperature requirement does not exceed 125°C. Applications requiring the full 2A rating or extended temperature operation to 150°C must use the SS23LHMHG.

Q: Are the package dimensions identical between these parts?

A: Both parts use the DO-219AB package with surface mount technology. The mechanical footprint and PCB layout compatibility are equivalent.

Q: What is the difference in forward voltage between these diodes?

A: The SS23LHMHG has a maximum forward voltage of 500 mV at 2A, while the SL03-GS18 has a maximum forward voltage of 430 mV at 1.1A. Forward voltage characteristics are measured at their respective rated currents and are not directly comparable across different current levels.

Q: Does the SL03-GS18 have automotive qualification?

A: The provided parameters do not specify AEC-Q101 or equivalent automotive qualification for the SL03-GS18. Applications requiring automotive-grade components should use the SS23LHMHG.

Q: What is the reverse leakage current difference?

A: The SS23LHMHG has a reverse leakage current of 400 µA at 30V, while the SL03-GS18 has 130 µA at 30V. The substitute part exhibits lower reverse leakage, which may provide improved performance in low-current or high-impedance circuit applications.

Q: Are both parts available in the same packaging format?

A: The SS23LHMHG is supplied in Sub SMA packaging. The SL03-GS18 is supplied in Tape & Reel (TR) format with DO-219AB (SMF) package designation. Both are surface mount compatible, but the tape and reel format may require different handling and placement equipment.

Q: What is the reverse recovery time specification?

A: The SS23LHMHG reverse recovery time is not specified in the provided parameters. The SL03-GS18 specifies a reverse recovery time of 10 ns. Both parts meet the fast recovery requirement of ≤ 500ns for currents greater than 200mA.