SS23LHMQG Equivalent & Substitute Parts

Part Overview

The SS23LHMQG is a 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 classified as Active product status with AEC-Q101 automotive qualification and ROHS3 compliance. 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.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	30	V
Current - Average Rectified (Io)	2	A
Voltage - Forward (Vf) (Max) @ If	500 mV @ 2 A	mV
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	ns
Current - Reverse Leakage @ Vr	400	µA @ 30 V
Technology	Schottky	—
Package / Case	DO-219AB	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-55 to 150	°C
RoHS Status	ROHS3 Compliant	—
Grade	Automotive	—
Qualification	AEC-Q101	—

Substitute Part Grouping Explanation

Substitution of the SS23LHMQG is determined by strict equivalence across the following critical parameters:

Voltage Rating: Reverse voltage must equal 30V DC maximum. This parameter is non-negotiable for circuit protection and component reliability.

Package and Mounting: Both the main part and substitute must use DO-219AB package with surface mount technology to ensure mechanical and electrical compatibility with existing PCB layouts and assembly processes.

Technology Type: Schottky diode technology must be maintained to preserve switching characteristics and forward voltage performance.

Current Rating: The substitute part current rating must support the application requirements. The SS23LHMQG is rated for 2A average rectified current; substitute parts with lower current ratings (such as 1.1A) operate within reduced current capacity and must be evaluated against circuit load requirements.

Compliance Standards: RoHS3 compliance and automotive-grade qualification (AEC-Q101) are required for applications demanding regulatory adherence and automotive-grade reliability.

The SL03-GS18 manufactured by Vishay General Semiconductor meets all mechanical and electrical compatibility criteria within the specified parameter ranges.

Parameter Comparison

Parameter	SS23LHMQG (Main Part)	SL03-GS18 (Substitute)	Unit
Manufacturer	Taiwan Semiconductor Corporation	Vishay General Semiconductor - Diodes Division	—
Technology	Schottky	Schottky	—
Voltage - DC Reverse (Vr) (Max)	30	30	V
Current - Average Rectified (Io)	2	1.1	A
Voltage - Forward (Vf) (Max) @ If	500 mV @ 2 A	430 mV @ 1.1 A	mV
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	ns
Reverse Recovery Time (trr)	—	10	ns
Current - Reverse Leakage @ Vr	400	130	µA @ 30 V
Package / Case	DO-219AB	DO-219AB	—
Mounting Type	Surface Mount	Surface Mount	—
Operating Temperature - Junction (Max)	150	125	°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	—
Product Status	Active	Active	—

Engineering Selection Recommendations

Primary Selection (SS23LHMQG): Use the SS23LHMQG when the application requires 2A average rectified current capacity, automotive-grade AEC-Q101 qualification, and the full operating temperature range of -55°C to 150°C junction temperature. This part is Active status with established supply availability.

Substitute Selection (SL03-GS18): The SL03-GS18 is suitable as a substitute when circuit load requirements do not exceed 1.1A average rectified current. This part maintains DO-219AB package compatibility, Schottky technology, 30V reverse voltage rating, and ROHS3 compliance. The SL03-GS18 exhibits lower forward voltage (430 mV @ 1.1 A versus 500 mV @ 2 A) and lower reverse leakage current (130 µA versus 400 µA @ 30 V), which may provide improved efficiency in current-limited applications. The maximum junction temperature of 125°C is lower than the SS23LHMQG; applications operating above 125°C junction temperature require the primary part.

Both parts are Active status with established supply chains and full regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can the SL03-GS18 directly replace the SS23LHMQG in all applications?

A: The SL03-GS18 is mechanically and electrically compatible for applications where the circuit current does not exceed 1.1A average rectified current. If the application requires the full 2A capacity of the SS23LHMQG, the substitute part is not suitable. Verify circuit load requirements before substitution.

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

A: The SS23LHMQG specifies 500 mV maximum forward voltage at 2A, while the SL03-GS18 specifies 430 mV maximum forward voltage at 1.1A. Forward voltage varies with current; direct comparison at different current levels requires manufacturer datasheets for precise values.

Q: Are both parts automotive-grade qualified?

A: The SS23LHMQG carries AEC-Q101 automotive qualification. The SL03-GS18 is manufactured by Vishay and is ROHS3 compliant but does not specify AEC-Q101 qualification in the provided parameters. Applications requiring automotive-grade certification must use the SS23LHMQG.

Q: Do both parts use the same package?

A: Yes. Both the SS23LHMQG and SL03-GS18 use the DO-219AB package with surface mount technology, ensuring mechanical compatibility with existing PCB layouts and assembly processes.

Q: What is the operating temperature difference?

A: The SS23LHMQG operates from -55°C to 150°C junction temperature. The SL03-GS18 specifies a maximum junction temperature of 125°C. Applications operating above 125°C require the SS23LHMQG.

Q: How do reverse leakage currents compare?

A: The SS23LHMQG specifies 400 µA reverse leakage at 30V, while the SL03-GS18 specifies 130 µA at 30V. Lower reverse leakage in the SL03-GS18 may reduce standby power consumption in certain circuit topologies.

Q: Are both parts RoHS compliant?

A: Yes. Both the SS23LHMQG and SL03-GS18 are ROHS3 compliant.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message