SS26L RFG Equivalent & Substitute Parts

Part Overview

The SS26L RFG is an active Schottky rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 60 V DC reverse voltage and 2 A average rectified current in a Sub SMA surface mount package. This component is designed for fast recovery applications with switching speeds ≤ 500 ns and operates across a junction temperature range of -55°C to 150°C. The part is RoHS3 compliant and carries MSL 1 (Unlimited) moisture sensitivity classification.

Equivalent and substitute parts are identified to provide design flexibility, accommodate supply chain variations, support different packaging formats, and enable selection of components with enhanced specifications such as automotive-grade qualification or extended temperature ranges.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	60	V
Current - Average Rectified (Io)	2	A
Voltage - Forward (Vf) (Max) @ If	700	mV @ 2 A
Speed	Fast Recovery ≤ 500 ns, > 200 mA (Io)	—
Current - Reverse Leakage @ Vr	400	µA @ 60 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 SS26L RFG are classified into two categories based on electrical and mechanical compatibility:

Parametric Equivalent (Direct Substitution): Parts that match all critical electrical parameters (60 V reverse voltage, 2 A average rectified current, 700 mV forward voltage at 2 A, fast recovery speed ≤ 500 ns) and physical package specifications (DO-219AB Sub SMA surface mount). These parts differ only in packaging format (Cut Tape versus Reel) or manufacturer identity while maintaining identical electrical performance.

Similar Parts (Current-Reduced or Enhanced Variants): Parts that maintain the same 60 V reverse voltage rating and DO-219AB package but operate at reduced current ratings (1 A instead of 2 A) or feature enhanced specifications including automotive-grade qualification (AEC-Q101), extended junction temperature range (-55°C to 175°C), or improved reverse leakage characteristics (3 µA versus 400 µA). These parts are suitable for applications where the full 2 A current capacity is not required or where automotive reliability standards are mandated.

Key Parameters Determining Substitution:

Voltage - DC Reverse (Vr) (Max): 60 V (required match)
Package / Case: DO-219AB (required match)
Mounting Type: Surface Mount (required match)
Technology: Schottky (required match)
Current - Average Rectified (Io): 2 A (for direct equivalents); 1 A acceptable for reduced-current applications
RoHS Status: ROHS3 Compliant (required match)

Parameter Comparison

Parameter	SS26L RFG	SS26L RVG	SS1FH6-M3/H	SS1FH6HM3/H	SS2FH6HM3/H
Manufacturer	Taiwan Semiconductor Corporation	Taiwan Semiconductor Corporation	Vishay General Semiconductor - Diodes Division	Vishay General Semiconductor - Diodes Division	Vishay General Semiconductor - Diodes Division
Voltage - DC Reverse (Vr) (Max)	60 V	60 V	60 V	60 V	60 V
Current - Average Rectified (Io)	2 A	2 A	1 A	1 A	2 A
Voltage - Forward (Vf) (Max) @ If	700 mV @ 2 A	700 mV @ 2 A	700 mV @ 1 A	700 mV @ 1 A	780 mV @ 2 A
Speed	Fast Recovery ≤ 500 ns, > 200 mA (Io)	Fast Recovery ≤ 500 ns, > 200 mA (Io)	Fast Recovery ≤ 500 ns, > 200 mA (Io)	Fast Recovery ≤ 500 ns, > 200 mA (Io)	Fast Recovery ≤ 500 ns, > 200 mA (Io)
Current - Reverse Leakage @ Vr	400 µA @ 60 V	400 µA @ 60 V	3 µA @ 60 V	3 µA @ 60 V	3 µA @ 60 V
Capacitance @ Vr, F	—	—	90 pF @ 4 V, 1 MHz	90 pF @ 4 V, 1 MHz	90 pF @ 4 V, 1 MHz
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	DO-219AB	DO-219AB	DO-219AB	DO-219AB	DO-219AB
Operating Temperature - Junction	-55 to 150 °C	-55 to 150 °C	-55 to 175 °C	-55 to 175 °C	-55 to 175 °C
Technology	Schottky	Schottky	Schottky	Schottky	Schottky
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Automotive Grade	—	—	—	AEC-Q101	AEC-Q101
Packaging Format	Reel	Cut Tape (CT)	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)

Engineering Selection Recommendations

SS26L RVG (Parametric Equivalent): Select this part when packaging format flexibility is required. The SS26L RVG is supplied in Cut Tape format and maintains identical electrical specifications to the SS26L RFG, including 60 V reverse voltage, 2 A average rectified current, and 700 mV forward voltage at 2 A. Both parts are RoHS3 compliant and carry MSL 1 classification. This substitution is appropriate for applications where reel-based component handling is not necessary.

SS1FH6-M3/H (Similar Part - Reduced Current, Extended Temperature): Select this part for applications requiring reduced current capacity (1 A instead of 2 A) with extended operating temperature range (-55°C to 175°C versus -55°C to 150°C). The part maintains 60 V reverse voltage rating and DO-219AB package compatibility. Reverse leakage is significantly improved at 3 µA compared to 400 µA. This part is suitable for low-current rectification circuits where thermal margin is beneficial.

SS1FH6HM3/H (Similar Part - Automotive Grade, Reduced Current, Extended Temperature): Select this part for automotive applications requiring AEC-Q101 qualification. The part operates at 1 A average rectified current with extended temperature range (-55°C to 175°C) and improved reverse leakage (3 µA). RoHS3 compliance and MSL 1 classification are maintained. This substitution is mandatory for automotive-grade system designs.

SS2FH6HM3/H (Similar Part - Automotive Grade, Full Current, Extended Temperature): Select this part for automotive applications requiring full 2 A current capacity with AEC-Q101 qualification. The part maintains 60 V reverse voltage and DO-219AB package specifications with extended temperature range (-55°C to 175°C) and improved reverse leakage (3 µA). Forward voltage is 780 mV at 2 A (versus 700 mV for the main part). This substitution is appropriate for automotive designs where the full 2 A current rating and automotive reliability standards are both required.

Frequently Asked Questions (FAQ)

Q: Can SS26L RVG be used as a direct replacement for SS26L RFG?

A: Yes. The SS26L RVG is a parametric equivalent with identical electrical specifications (60 V reverse voltage, 2 A average rectified current, 700 mV forward voltage at 2 A, fast recovery ≤ 500 ns). The only difference is packaging format: SS26L RVG is supplied in Cut Tape format while SS26L RFG is supplied on Reel. Both are RoHS3 compliant with MSL 1 classification.

Q: What is the difference between the 1 A and 2 A rated parts?

A: The primary difference is average rectified current capacity. SS1FH6-M3/H and SS1FH6HM3/H are rated for 1 A, while SS26L RFG, SS26L RVG, and SS2FH6HM3/H are rated for 2 A. All maintain the same 60 V reverse voltage rating and DO-219AB package. The 1 A parts are suitable for lower-current applications and offer improved reverse leakage characteristics (3 µA versus 400 µA).

Q: Are the Vishay parts (SS1FH6-M3/H, SS1FH6HM3/H, SS2FH6HM3/H) compatible with the Taiwan Semiconductor parts?

A: Yes, all parts share the same 60 V reverse voltage rating, DO-219AB package, and Schottky technology. They are electrically compatible for applications where the current rating and temperature range requirements are met. The Vishay parts offer improved reverse leakage (3 µA) and extended temperature range (-55°C to 175°C).

Q: Which part should I select for automotive applications?

A: Select either SS1FH6HM3/H (1 A, AEC-Q101 qualified) or SS2FH6HM3/H (2 A, AEC-Q101 qualified). Both parts carry automotive-grade qualification and extended temperature range (-55°C to 175°C). Choose based on your circuit's current requirement.

Q: What is the significance of the reverse leakage difference (400 µA versus 3 µA)?

A: Reverse leakage current affects power dissipation and circuit performance at high reverse voltages. The Vishay parts (SS1FH6-M3/H, SS1FH6HM3/H, SS2FH6HM3/H) exhibit significantly lower reverse leakage at 3 µA compared to the Taiwan Semiconductor parts at 400 µA. This results in reduced standby power consumption and improved circuit efficiency in applications with sustained reverse bias conditions.

Q: Can I use a 1 A rated part in a circuit designed for 2 A?

A: No. Using a 1 A rated part in a 2 A application exceeds the component's current rating and results in excessive power dissipation, thermal stress, and potential device failure. Select a part with current rating equal to or greater than the circuit requirement.

Q: What is the difference between Cut Tape and Tape & Reel packaging?

A: Cut Tape (CT) packaging supplies individual components on tape without reel backing, suitable for manual assembly or small-volume production. Tape & Reel (TR) packaging supplies components on continuous tape wound on a reel, suitable for automated pick-and-place assembly. Both formats contain the same component; the difference is handling and assembly methodology.

Q: Are all listed parts RoHS3 compliant?

A: Yes. All parts listed (SS26L RFG, SS26L RVG, SS1FH6-M3/H, SS1FH6HM3/H, SS2FH6HM3/H) are RoHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity classification.

Q: What does AEC-Q101 qualification mean?

A: AEC-Q101 is the automotive industry standard qualification for discrete semiconductors. Parts carrying this qualification (SS1FH6HM3/H and SS2FH6HM3/H) have undergone rigorous testing for reliability, temperature cycling, and performance consistency required for automotive applications. This qualification is mandatory for components used in automotive systems.

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