SS23L RFG Schottky Diode Equivalent & Substitute Parts

Part Overview

The SS23L RFG is a 30V, 2A Schottky rectifier diode manufactured by Taiwan Semiconductor Corporation, designed for surface mount applications in the Sub SMA package configuration. This component is classified as a fast recovery Schottky diode with a maximum forward voltage of 500 mV at 2A and operates across a junction temperature range of -55°C to 150°C. The part maintains Active product status and carries ROHS3 compliance certification.

Equivalent and substitute parts are identified to address component availability, supply chain continuity, and design flexibility while maintaining electrical and mechanical compatibility within the specified parameter envelope.

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
Mounting Type	Surface Mount	—
Package / Case	DO-219AB	—
Operating Temperature - Junction	-55 to 150	°C
Technology	Schottky	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the SS23L RFG are qualified based on the following electrical and mechanical criteria:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): 30V minimum
Package / Case: DO-219AB (mechanical compatibility)
Mounting Type: Surface Mount
Technology: Schottky
Speed: Fast Recovery ≤ 500ns, > 200mA (Io)
RoHS Status: ROHS3 Compliant
Operating Temperature Range: -55°C to 150°C minimum

Current Rating Considerations: Substitute parts are grouped by average rectified current (Io) rating. The SS23L RFG operates at 2A. Substitutes with equal or higher current ratings (2A) provide direct replacement capability. Substitutes with lower current ratings (1A, 1.1A) are listed for reference but represent downrated alternatives suitable only when circuit design permits reduced current handling.

Packaging and Qualification: All substitute parts maintain DO-219AB package compatibility and ROHS3 compliance. Automotive-grade variants (AEC-Q101 qualified) are identified separately for applications requiring automotive qualification.

Parameter Comparison

Parameter	SS23L RFG	SS2FL3HM3/H	SS2FL3-M3/H	SS1FL3HM3/H	SS1FL3-M3/H	SL03-GS18
Manufacturer	Taiwan Semiconductor Corporation	Vishay General Semiconductor	Vishay General Semiconductor	Vishay General Semiconductor	Vishay General Semiconductor	Vishay General Semiconductor
Voltage - DC Reverse (Vr) (Max)	30 V	30 V	30 V	30 V	30 V	30 V
Current - Average Rectified (Io)	2 A	2 A	2 A	1 A	1 A	1.1 A
Voltage - Forward (Vf) (Max) @ If	500 mV @ 2 A	540 mV @ 2 A	540 mV @ 2 A	480 mV @ 1 A	480 mV @ 1 A	430 mV @ 1.1 A
Speed	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA
Current - Reverse Leakage @ Vr	400 µA @ 30 V	200 µA @ 30 V	200 µA @ 30 V	200 µA @ 30 V	200 µA @ 30 V	130 µA @ 30 V
Package / Case	DO-219AB	DO-219AB	DO-219AB	DO-219AB	DO-219AB	DO-219AB
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Operating Temperature - Junction	-55 to 150 °C	-55 to 150 °C	-55 to 150 °C	-55 to 150 °C	-55 to 150 °C	125 °C (Max)
Technology	Schottky	Schottky	Schottky	Schottky	Schottky	Schottky
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Automotive Grade	—	AEC-Q101	—	AEC-Q101	—	—

Engineering Selection Recommendations

Direct Equivalents (2A Current Rating):

The SS2FL3HM3/H and SS2FL3-M3/H from Vishay General Semiconductor are direct electrical equivalents to the SS23L RFG, both rated at 30V, 2A with DO-219AB package compatibility. Both parts maintain identical operating temperature ranges (-55°C to 150°C) and ROHS3 compliance. The SS2FL3HM3/H carries AEC-Q101 automotive qualification, suitable for applications requiring automotive-grade components. The SS2FL3-M3/H is available in Tape & Reel packaging and represents a standard industrial-grade alternative.

Downrated Alternatives (1A Current Rating):

The SS1FL3HM3/H and SS1FL3-M3/H are 1A-rated Schottky diodes with identical 30V reverse voltage and DO-219AB package configuration. These parts are suitable for circuit designs where the 2A current requirement can be reduced. The SS1FL3HM3/H includes AEC-Q101 automotive qualification. Both maintain the full -55°C to 150°C operating temperature range.

Lower Current Alternative (1.1A Current Rating):

The SL03-GS18 from Vishay General Semiconductor is rated at 1.1A with 30V reverse voltage and DO-219AB package. This part exhibits the lowest reverse leakage current (130 µA @ 30V) among all listed substitutes. The maximum operating junction temperature is limited to 125°C, which restricts its use in applications requiring the full -55°C to 150°C range of the SS23L RFG.

Compliance and Availability:

All substitute parts maintain ROHS3 compliance and Unlimited moisture sensitivity level (MSL 1). Inventory availability is confirmed for all listed alternatives, with Vishay parts showing substantial stock levels ranging from 15,944 to 68,655 units.

Frequently Asked Questions (FAQ)

Q: Can the SS2FL3HM3/H directly replace the SS23L RFG in all applications?

A: Yes. The SS2FL3HM3/H is electrically and mechanically compatible with the SS23L RFG. Both are rated at 30V, 2A with DO-219AB package configuration, identical operating temperature range (-55°C to 150°C), and ROHS3 compliance. The SS2FL3HM3/H includes additional AEC-Q101 automotive qualification.

Q: What is the difference between SS2FL3HM3/H and SS2FL3-M3/H?

A: Both parts are electrically identical 30V, 2A Schottky diodes in DO-219AB packages. The primary difference is packaging format: SS2FL3HM3/H is supplied in Tape & Reel (TR), while SS2FL3-M3/H is supplied in Tape & Reel (TR). Both maintain identical electrical specifications and ROHS3 compliance.

Q: Can I use a 1A-rated diode (SS1FL3HM3/H or SS1FL3-M3/H) instead of the 2A SS23L RFG?

A: Only if your circuit design permits operation at reduced current levels. The 1A-rated parts are electrically compatible in terms of voltage rating (30V) and package (DO-219AB), but they cannot handle the full 2A current of the original part. Use only when circuit analysis confirms that maximum current requirements do not exceed 1A.

Q: Why does the SL03-GS18 have a lower maximum operating temperature (125°C) than other substitutes?

A: The SL03-GS18 is specified with a maximum junction temperature of 125°C, compared to 150°C for other listed parts. This specification difference limits its use in applications requiring the full -55°C to 150°C operating range. Verify circuit thermal requirements before selecting this part.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts (SS2FL3HM3/H, SS2FL3-M3/H, SS1FL3HM3/H, SS1FL3-M3/H, and SL03-GS18) carry ROHS3 compliance certification and are suitable for applications with RoHS requirements.

Q: What does AEC-Q101 qualification mean?

A: AEC-Q101 is an automotive electronics qualification standard. Parts carrying this qualification (SS2FL3HM3/H and SS1FL3HM3/H) have undergone additional testing and validation for automotive applications. Use these variants when automotive-grade components are specified.

Q: Can I mix different substitute parts in the same design?

A: Yes, provided all parts meet your circuit's electrical requirements. However, maintain consistency within a single application to simplify inventory management and ensure uniform performance characteristics across production batches.

Q: What is the significance of reverse leakage current differences?

A: Reverse leakage current affects power dissipation and circuit performance at high temperatures. The SS23L RFG specifies 400 µA @ 30V, while most Vishay substitutes specify 200 µA @ 30V, and the SL03-GS18 specifies 130 µA @ 30V. Lower leakage current reduces standby power consumption and heat generation in reverse-biased conditions.

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