SS23L MTG Schottky Diode Equivalent & Substitute Parts

Part Overview

The SS23L MTG is a 30V, 2A Schottky rectifier diode manufactured by Taiwan Semiconductor Corporation in Sub SMA surface mount packaging. This component is classified as Active product status and is ROHS3 compliant. Schottky diodes are essential in power conversion circuits, reverse polarity protection, and high-frequency switching applications where fast recovery time and low forward voltage drop are critical performance requirements. Substitute parts become necessary due to inventory constraints, supply chain disruptions, or specific application requirements such as automotive qualification or alternative packaging formats.

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
Package / Case	DO-219AB	—
Operating Temperature - Junction	-55 to 150	°C
Technology	Schottky	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the SS23L MTG is determined by strict electrical and mechanical compatibility criteria. All substitute parts must meet the following mandatory parameters:

Primary Substitution Criteria:

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

Secondary Compatibility Factors:

Current - Average Rectified (Io): 1A to 2A range
Voltage - Forward (Vf) (Max) @ If: 430mV to 540mV range
Current - Reverse Leakage @ Vr: 130µA to 400µA @ 30V

Substitute parts are grouped into two categories: direct current-rated equivalents (2A rated) and reduced current alternatives (1A rated). The 2A-rated substitutes provide identical current handling capacity. The 1A-rated substitutes operate within reduced current specifications and are suitable for applications with lower current demands.

Parameter Comparison

Parameter	SS23L MTG	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 (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)
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
Operating Temperature - Junction	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C	125°C (Max)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Automotive Grade	—	Yes (AEC-Q101)	—	Yes (AEC-Q101)	—	—

Engineering Selection Recommendations

Direct Equivalents (2A Current Rating):

The SS2FL3HM3/H and SS2FL3-M3/H are direct electrical equivalents to the SS23L MTG, both rated at 30V and 2A. These parts maintain identical current-handling capacity and meet all mandatory electrical specifications. The SS2FL3HM3/H includes AEC-Q101 automotive qualification and is supplied in Tape & Reel packaging. The SS2FL3-M3/H is supplied in Cut Tape & Digi-Reel format. Both parts are ROHS3 compliant with MSL 1 rating.

Reduced Current Alternatives (1A Rating):

The SS1FL3HM3/H and SS1FL3-M3/H are rated at 1A and are suitable for applications where the circuit current demand does not exceed 1A. The SS1FL3HM3/H includes AEC-Q101 automotive qualification. Both parts maintain the 30V reverse voltage rating and fast recovery speed specification. These alternatives are appropriate for cost optimization in lower-current applications.

Lower Leakage Alternative (1.1A Rating):

The SL03-GS18 is rated at 1.1A with the lowest reverse leakage current (130µA @ 30V) among all substitutes. This part is suitable for applications requiring minimal leakage characteristics. The maximum operating temperature is specified at 125°C, which is lower than the SS23L MTG specification of 150°C. This part is supplied in Tape & Reel packaging.

Compliance and Certification:

All substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with standard manufacturing and storage processes. Automotive-qualified variants (SS2FL3HM3/H and SS1FL3HM3/H) carry AEC-Q101 certification for applications requiring automotive-grade components.

Frequently Asked Questions (FAQ)

Q: Can the SS2FL3HM3/H or SS2FL3-M3/H be used as direct replacements for the SS23L MTG?

A: Yes. Both parts are rated at 30V and 2A with identical fast recovery speed specifications and DO-219AB packaging. They meet all mandatory electrical and mechanical compatibility criteria for direct substitution in circuits designed for the SS23L MTG.

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

A: Both parts are electrically identical 30V, 2A Schottky diodes. The primary difference is packaging format: SS2FL3HM3/H is supplied in Tape & Reel (TR), while SS2FL3-M3/H is supplied in Cut Tape (CT) & Digi-Reel format. Selection depends on assembly equipment compatibility and procurement requirements.

Q: Can I use the 1A-rated substitutes (SS1FL3HM3/H or SS1FL3-M3/H) in place of the SS23L MTG?

A: The 1A-rated parts are electrically compatible but have reduced current capacity. They are suitable only for applications where the maximum circuit current does not exceed 1A. Using these parts in circuits requiring 2A operation will result in component failure.

Q: What does AEC-Q101 qualification mean?

A: AEC-Q101 is an automotive industry qualification standard. Parts carrying this certification (SS2FL3HM3/H and SS1FL3HM3/H) have undergone additional testing and validation for automotive applications. These variants are required for automotive circuit designs.

Q: Why does the SL03-GS18 have a lower maximum operating temperature (125°C) compared to the SS23L MTG (150°C)?

A: The SL03-GS18 is specified with a maximum junction temperature of 125°C, while the SS23L MTG is specified at 150°C. This difference affects thermal design margins. The SL03-GS18 is suitable for applications where the junction temperature remains below 125°C.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, matching the compliance profile of the SS23L MTG.

Q: What is the significance of the forward voltage (Vf) differences between parts?

A: Forward voltage differences (ranging from 430mV to 540mV) affect power dissipation and circuit efficiency. Lower forward voltage results in reduced heat generation. The SS23L MTG specifies 500mV @ 2A. Substitute parts with different Vf ratings will produce different power dissipation characteristics in the same circuit.

Q: Can packaging format affect circuit performance?

A: Packaging format (Tape & Reel, Cut Tape, or Digi-Reel) affects assembly process compatibility and procurement logistics but does not affect electrical performance. Selection should be based on assembly equipment requirements and supply chain preferences.

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