SS13L RFG Equivalent & Substitute Parts

Part Overview

The SS13L RFG is a Schottky rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 30 V DC reverse voltage and 1 A average rectified current in a surface mount Sub SMA package (DO-219AB). This component is classified as Active product status and is RoHS3 compliant with unlimited moisture sensitivity level (MSL 1).

Schottky diodes are essential in power conversion circuits, voltage regulation, and reverse polarity protection applications where fast switching speed and low forward voltage drop are required. Equivalent and substitute parts become necessary when addressing supply chain constraints, packaging format requirements, current rating adjustments, or automotive-grade qualification needs while maintaining electrical compatibility within the 30 V / 1 A operational envelope.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	30	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	500 mV @ 1 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 125	°C
Technology	Schottky	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the SS13L RFG is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): Must equal or exceed 30 V
Current - Average Rectified (Io): Must equal or exceed 1 A
Package / Case: Must be DO-219AB (Sub SMA / SMF)
Mounting Type: Must be Surface Mount
Technology: Must be Schottky
Speed: Must maintain Fast Recovery ≤ 500ns, > 200mA (Io)

Parametric Equivalent Classification: Parts meeting all primary criteria with identical electrical specifications (30 V, 1 A) and packaging are classified as parametric equivalents. The SS13L RVG from Taiwan Semiconductor Corporation qualifies as a parametric equivalent, differing only in packaging format (Cut Tape vs. Reel).

Similar Part Classification: Parts exceeding the 1 A current rating (2 A variants) or manufactured by alternative suppliers (Vishay General Semiconductor - Diodes Division) while maintaining 30 V reverse voltage and DO-219AB packaging are classified as similar parts. These provide functional substitution with enhanced current capacity or automotive-grade qualification where applicable.

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io	Vf (Max) @ If	Reverse Leakage @ Vr	Package	Temp Range	Grade
SS13L RFG	Taiwan Semiconductor Corporation	30 V	1 A	500 mV @ 1 A	400 µA @ 30 V	DO-219AB	-55 to 125°C	Commercial
SS13L RVG	Taiwan Semiconductor Corporation	30 V	1 A	500 mV @ 1 A	400 µA @ 30 V	DO-219AB	-55 to 125°C	Commercial
SL03-GS18	Vishay General Semiconductor - Diodes Division	30 V	1.1 A	430 mV @ 1.1 A	130 µA @ 30 V	DO-219AB	-55 to 125°C	Commercial
SS1FL3-M3/H	Vishay General Semiconductor - Diodes Division	30 V	1 A	480 mV @ 1 A	200 µA @ 30 V	DO-219AB	-55 to 150°C	Commercial
SS1FL3HM3/H	Vishay General Semiconductor - Diodes Division	30 V	1 A	480 mV @ 1 A	200 µA @ 30 V	DO-219AB	-55 to 150°C	Automotive (AEC-Q101)
SS2FL3-M3/H	Vishay General Semiconductor - Diodes Division	30 V	2 A	540 mV @ 2 A	200 µA @ 30 V	DO-219AB	-55 to 150°C	Commercial
SS2FL3HM3/H	Vishay General Semiconductor - Diodes Division	30 V	2 A	540 mV @ 2 A	200 µA @ 30 V	DO-219AB	-55 to 150°C	Automotive (AEC-Q101)

Engineering Selection Recommendations

Parametric Equivalent (Direct Replacement): The SS13L RVG from Taiwan Semiconductor Corporation is a parametric equivalent to the SS13L RFG. Both parts share identical electrical specifications (30 V, 1 A, 500 mV forward voltage) and packaging (DO-219AB). Selection between these two is determined by packaging format availability: SS13L RFG is supplied in Reel format, while SS13L RVG is supplied in Cut Tape format. Both maintain Active product status and ROHS3 compliance.

Commercial-Grade Alternatives (Vishay eSMP® Series): The SS1FL3-M3/H and SL03-GS18 from Vishay General Semiconductor - Diodes Division provide functional substitution with improved electrical characteristics. The SS1FL3-M3/H maintains the 1 A rating with lower forward voltage (480 mV vs. 500 mV) and extended temperature range (-55 to 150°C). The SL03-GS18 provides 1.1 A current capacity with superior reverse leakage performance (130 µA vs. 400 µA). Both are Active products with ROHS3 compliance.

Automotive-Grade Alternatives (AEC-Q101 Qualified): The SS1FL3HM3/H and SS2FL3HM3/H are automotive-grade variants qualified to AEC-Q101 standard. The SS1FL3HM3/H maintains 1 A rating with automotive qualification, while the SS2FL3HM3/H provides doubled current capacity (2 A) for applications requiring thermal margin or higher current handling. Both extend operating temperature to 150°C and are suitable for automotive and industrial applications requiring enhanced reliability certification.

Higher Current Capacity Alternatives: The SS2FL3-M3/H and SS2FL3HM3/H provide 2 A average rectified current, suitable for applications where the 1 A rating of the SS13L RFG presents insufficient margin. These parts maintain 30 V reverse voltage rating and DO-219AB packaging, with the HM3/H variant offering automotive-grade qualification.

Frequently Asked Questions (FAQ)

Q: Can the SS13L RVG directly replace the SS13L RFG? A: Yes. The SS13L RVG is a parametric equivalent with identical electrical specifications (30 V, 1 A, 500 mV forward voltage) and DO-219AB packaging. The only difference is packaging format: SS13L RFG uses Reel format while SS13L RVG uses Cut Tape format. Both are manufactured by Taiwan Semiconductor Corporation and maintain identical performance characteristics.

Q: What is the difference between commercial-grade and automotive-grade Schottky diodes? A: Automotive-grade parts (SS1FL3HM3/H, SS2FL3HM3/H) are qualified to AEC-Q101 standard, which specifies enhanced reliability testing, extended temperature range (-55 to 150°C vs. -55 to 125°C), and stricter quality control. Commercial-grade parts (SS1FL3-M3/H, SS2FL3-M3/H) meet standard industrial requirements. Selection depends on application environment and reliability requirements.

Q: Can I use a 2 A rated diode (SS2FL3-M3/H) in place of the 1 A SS13L RFG? A: Yes. The SS2FL3-M3/H maintains the 30 V reverse voltage rating and DO-219AB packaging, providing functional substitution with doubled current capacity. This is suitable for applications where thermal margin or higher current handling is beneficial. Forward voltage increases to 540 mV at 2 A, which may affect circuit efficiency in low-voltage applications.

Q: What does "Fast Recovery ≤ 500ns, > 200mA (Io)" mean? A: This specifies the reverse recovery time characteristic of the Schottky diode. All substitute parts maintain this fast recovery specification, ensuring switching performance remains consistent across equivalent and similar parts. This parameter is critical for power conversion and high-frequency applications.

Q: Are all substitute parts RoHS3 compliant? A: Yes. All listed substitute parts (SS13L RVG, SL03-GS18, SS1FL3-M3/H, SS1FL3HM3/H, SS2FL3-M3/H, SS2FL3HM3/H) are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level, matching the compliance profile of the SS13L RFG.

Q: What is the difference between DO-219AB and Sub SMA packaging? A: DO-219AB and Sub SMA refer to the same physical package format. "Sub SMA" is the supplier designation used by Taiwan Semiconductor Corporation, while "DO-219AB (SMF)" is the standard industry designation used by Vishay. These are mechanically and electrically identical packages suitable for surface mount assembly.

Q: Which substitute part has the lowest forward voltage drop? A: The SL03-GS18 from Vishay exhibits the lowest forward voltage drop at 430 mV @ 1.1 A, compared to 500 mV @ 1 A for the SS13L RFG. This lower forward voltage reduces power dissipation in applications where efficiency is critical, though the SL03-GS18 provides slightly higher current capacity (1.1 A vs. 1 A).

Q: Can I use Vishay parts as direct replacements for Taiwan Semiconductor Corporation parts? A: Yes, provided electrical specifications and packaging match. The Vishay eSMP® series parts (SS1FL3-M3/H, SS1FL3HM3/H, SS2FL3-M3/H, SS2FL3HM3/H, SL03-GS18) are functionally compatible with the SS13L RFG within the specified parameter ranges. Verify forward voltage and reverse leakage specifications for your specific circuit requirements.

Q: What is the maximum reverse leakage current I should expect? A: The SS13L RFG specifies 400 µA @ 30 V maximum reverse leakage. Vishay substitute parts specify lower reverse leakage at 200 µA @ 30 V (SS1FL3 and SS2FL3 series) or 130 µA @ 30 V (SL03-GS18). Lower reverse leakage improves circuit performance in precision applications and reduces standby power consumption.

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