SS23LHM2G Schottky Diode Equivalent & Substitute Parts

Part Overview

The SS23LHM2G 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 qualifies to AEC-Q101 automotive standards. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to component availability, supply chain considerations, or design flexibility within specified parameter ranges.

Substiute Parts

SS23LHM2G

Taiwan Semiconductor CorporationIn Stock: 1128SS23LHM2G Datasheet

Current PartRFQ

SL03-GS18

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

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the SS23LHM2G is determined by equivalence in the following critical parameters:

Electrical Compatibility Requirements:

• Voltage - DC Reverse (Vr) (Max): Must equal or exceed 30V
• Technology: Must be Schottky diode type
• Speed: Must support Fast Recovery ≤ 500ns for currents > 200mA (Io)
• Package / Case: Must be DO-219AB or equivalent Sub SMA form factor
• Mounting Type: Must be Surface Mount

Operational Compatibility Requirements:

• Current - Average Rectified (Io): Substitute must support minimum 2A operation
• Voltage - Forward (Vf): Must be within acceptable forward conduction parameters
• Current - Reverse Leakage: Must remain within acceptable limits at rated voltage
• Operating Temperature Range: Must support junction temperatures within -55°C to 150°C

Compliance Requirements:

• RoHS Status: Must be ROHS3 Compliant
• REACH Status: Must be REACH Unaffected

The SL03-GS18 meets these substitution criteria with equivalent reverse voltage rating, fast recovery speed specification, matching package designation, and identical compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection: The SS23LHM2G remains the primary selection when the full 2A average rectified current capacity is required within the specified operating temperature range of -55°C to 150°C junction temperature. This part maintains active product status with AEC-Q101 automotive qualification and ROHS3 compliance.

Substitute Part Selection: The SL03-GS18 serves as a functional substitute when circuit design permits operation at reduced current levels (1.1A maximum versus 2A). This substitute maintains electrical equivalence in reverse voltage rating, fast recovery speed specification, and package form factor. The SL03-GS18 exhibits superior forward voltage characteristics (430 mV @ 1.1A versus 500 mV @ 2A) and lower reverse leakage current (130 µA versus 400 µA at 30V), indicating enhanced efficiency in lower-current applications. Both parts maintain identical RoHS3 and REACH compliance status and active product availability.

Temperature Consideration: The SL03-GS18 specifies a maximum junction temperature of 125°C, which is 25°C lower than the SS23LHM2G specification of 150°C. Circuit designs requiring sustained operation above 125°C junction temperature must retain the SS23LHM2G.

Frequently Asked Questions (FAQ)

Q: Can the SL03-GS18 directly replace the SS23LHM2G in all applications?

A: The SL03-GS18 is electrically compatible when circuit current requirements do not exceed 1.1A average rectified current and operating junction temperature remains below 125°C. The SS23LHM2G is required for applications demanding the full 2A current capacity or sustained operation above 125°C junction temperature.

Q: Are the package dimensions identical between SS23LHM2G and SL03-GS18?

A: Both parts use the DO-219AB package designation for surface mount applications. The SS23LHM2G is specified as Sub SMA, while the SL03-GS18 is specified as DO-219AB (SMF). These designations refer to the same physical form factor and are mechanically compatible for PCB assembly.

Q: What is the significance of the forward voltage difference between these parts?

A: The SS23LHM2G specifies 500 mV forward voltage at 2A, while the SL03-GS18 specifies 430 mV at 1.1A. Forward voltage is current-dependent; direct comparison requires evaluation at identical current levels. The SL03-GS18 demonstrates lower forward voltage at its rated current, indicating superior efficiency in lower-current circuit designs.

Q: Do both parts meet automotive qualification requirements?

A: The SS23LHM2G carries AEC-Q101 automotive qualification. The SL03-GS18 does not specify AEC-Q101 qualification in the provided parameters. Automotive applications requiring AEC-Q101 certification must use the SS23LHM2G.

Q: What is the difference in reverse leakage current between these parts?

A: The SS23LHM2G specifies 400 µA reverse leakage at 30V, while the SL03-GS18 specifies 130 µA at 30V. Lower reverse leakage current in the SL03-GS18 indicates reduced parasitic current draw in reverse-biased conditions, beneficial for low-power or battery-operated circuit designs.

Q: Are both parts available in identical packaging formats?

A: Both parts are surface mount components in DO-219AB package form factor. The SS23LHM2G is supplied as Sub SMA, while the SL03-GS18 is supplied in Tape & Reel (TR) format. Both are compatible with standard surface mount assembly processes.

Q: What compliance certifications apply to both parts?

A: Both the SS23LHM2G and SL03-GS18 are ROHS3 Compliant and REACH Unaffected. Both maintain active product status with unrestricted moisture sensitivity level (MSL 1).