SS23LHR3G Schottky Diode Equivalent & Substitute Parts

Part Overview

The SS23LHR3G 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. Equivalent and substitute parts are identified based on matching electrical ratings, package compatibility, and operational specifications to support procurement flexibility and supply chain continuity.

Key Parameters

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

Substitute Part Grouping Explanation

Substitution of the SS23LHR3G is determined by the following critical parameters:

Electrical Compatibility Requirements:

Voltage - DC Reverse (Vr) (Max): 30 V minimum
Current - Average Rectified (Io): 2 A minimum
Technology: Schottky
Speed: Fast Recovery ≤ 500ns, > 200mA (Io)

Mechanical Compatibility Requirements:

Package / Case: DO-219AB
Mounting Type: Surface Mount

Compliance Requirements:

RoHS Status: ROHS3 Compliant
Technology Classification: Schottky rectifier diode

The substitute part SL03-GS18 meets the reverse voltage and package requirements. However, the current rating of 1.1A is below the 2A specification of the main part. This substitute is suitable for applications where the actual circuit current demand does not exceed 1.1A, despite the main part's higher rating.

Parameter Comparison

Parameter	SS23LHR3G (Main Part)	SL03-GS18 (Substitute)
Manufacturer	Taiwan Semiconductor Corporation	Vishay General Semiconductor - Diodes Division
Voltage - DC Reverse (Vr) (Max)	30 V	30 V
Current - Average Rectified (Io)	2 A	1.1 A
Voltage - Forward (Vf) (Max) @ If	500 mV @ 2 A	430 mV @ 1.1 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	400 µA @ 30 V	130 µA @ 30 V
Package / Case	DO-219AB	DO-219AB
Mounting Type	Surface Mount	Surface Mount
Operating Temperature - Junction (Max)	150°C	125°C
Technology	Schottky	Schottky
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active

Engineering Selection Recommendations

SS23LHR3G Selection Criteria: The SS23LHR3G is the primary choice for applications requiring 2A average rectified current at 30V reverse voltage with AEC-Q101 automotive qualification. This part supports the full specified current rating and extended junction temperature range to 150°C. The part is active and ROHS3 compliant.

SL03-GS18 Selection Criteria: The SL03-GS18 is suitable as a substitute when circuit design requirements do not exceed 1.1A average rectified current. Both parts share identical reverse voltage ratings, DO-219AB package compatibility, and fast recovery speed characteristics. The SL03-GS18 offers lower forward voltage (430 mV @ 1.1A) and lower reverse leakage current (130 µA @ 30V). The part is active and ROHS3 compliant. Maximum junction temperature is 125°C, which is lower than the main part.

Selection between these parts depends on actual circuit current requirements and thermal operating conditions. Both parts are surface mount compatible in DO-219AB package format.

Frequently Asked Questions (FAQ)

Q: Can the SL03-GS18 directly replace the SS23LHR3G in all applications?

A: Direct replacement is possible only in applications where the circuit current does not exceed 1.1A. The SL03-GS18 has a lower current rating (1.1A vs. 2A). If the application requires the full 2A capability, the SS23LHR3G must be used.

Q: Are both parts compatible with the same PCB footprint?

A: Yes. Both the SS23LHR3G and SL03-GS18 use the DO-219AB package format and surface mount mounting type, ensuring mechanical and footprint compatibility.

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

A: The SS23LHR3G has a forward voltage of 500 mV at 2A, while the SL03-GS18 has 430 mV at 1.1A. Forward voltage specifications are rated at different current levels and cannot be directly compared. The SL03-GS18 exhibits lower reverse leakage current at 130 µA compared to 400 µA for the SS23LHR3G.

Q: Do both parts meet automotive qualification standards?

A: The SS23LHR3G carries AEC-Q101 automotive qualification. The SL03-GS18 does not list AEC-Q101 qualification in the provided specifications. For automotive applications requiring AEC-Q101 compliance, the SS23LHR3G is the appropriate selection.

Q: What is the maximum junction temperature difference between these parts?

A: The SS23LHR3G operates to 150°C maximum junction temperature, while the SL03-GS18 operates to 125°C maximum. In high-temperature applications, the SS23LHR3G provides a 25°C thermal margin advantage.

Q: Are both parts RoHS compliant?

A: Yes. Both the SS23LHR3G and SL03-GS18 are ROHS3 compliant and REACH unaffected.

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