SS310L RTG Equivalent & Substitute Parts

Part Overview

The SS310L RTG is a Schottky rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 100 V DC reverse voltage and 3 A average rectified current in a Sub SMA surface mount package (DO-219AB). This component is classified as Active product status and is ROHS3 compliant with unlimited moisture sensitivity level (MSL 1).

Equivalent and substitute parts are necessary when the primary part number becomes unavailable, when alternative packaging formats are required for manufacturing processes, or when design specifications allow for compatible alternatives from qualified manufacturers. The substitute parts listed maintain electrical compatibility within the specified parameter ranges while offering different availability, packaging options, or product status classifications.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	100	V
Current - Average Rectified (Io)	3	A
Voltage - Forward (Vf) (Max) @ If	850 mV @ 3 A	mV
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	ns
Current - Reverse Leakage @ Vr	100	µA @ 100 V
Technology	Schottky	—
Package / Case	DO-219AB	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-55 to 150	°C
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the SS310L RTG is determined by strict adherence to the following electrical and mechanical parameters:

Critical Parameters for Substitution:

Voltage - DC Reverse (Vr) (Max): Must equal or exceed 100 V
Package / Case: Must be DO-219AB (Sub SMA)
Mounting Type: Must be Surface Mount
Technology: Must be Schottky
Speed Classification: Must be Fast Recovery ≤ 500ns, > 200mA (Io)

Current Rating Consideration: The SS310L RTG is rated for 3 A average rectified current. Substitute parts with lower current ratings (1 A or 2 A) operate within the same voltage and package specifications but with reduced current capacity. These lower-rated alternatives are classified as similar parts rather than direct equivalents due to the current rating differential.

Parametric Equivalent: The SS310L (Tape & Reel packaging variant) maintains identical electrical specifications and package format, differing only in packaging presentation and product status classification.

Similar Manufacturer Parts: The Vishay General Semiconductor eSMP® series parts (SS1FH10-M3/H, SS1FH10HM3/H, SS2FH10-M3/H, SS2FH10HM3/H) share the same voltage rating, package type, and fast recovery speed characteristics. These parts are classified as similar due to current rating variations (1 A and 2 A respectively) and different manufacturer origin.

Parameter Comparison

Parameter	SS310L RTG (Main)	SS310L (Equivalent)	SS1FH10-M3/H (Similar)	SS1FH10HM3/H (Similar)	SS2FH10-M3/H (Similar)	SS2FH10HM3/H (Similar)
Manufacturer	Taiwan Semiconductor	Taiwan Semiconductor	Vishay General Semiconductor	Vishay General Semiconductor	Vishay General Semiconductor	Vishay General Semiconductor
Voltage - DC Reverse (Vr) (Max)	100 V	100 V	100 V	100 V	100 V	100 V
Current - Average Rectified (Io)	3 A	3 A	1 A	1 A	2 A	2 A
Voltage - Forward (Vf) (Max) @ If	850 mV @ 3 A	850 mV @ 3 A	800 mV @ 1 A	800 mV @ 1 A	860 mV @ 2 A	860 mV @ 2 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	100 µA @ 100 V	100 µA @ 100 V	5 µA @ 100 V	5 µA @ 100 V	5 µA @ 10 V	5 µA @ 100 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 175°C	-55 to 175°C	-55 to 175°C	-55 to 175°C
Product Status	Active	Not For New Designs	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Parametric Equivalent - SS310L (Tape & Reel): The SS310L in Tape & Reel packaging is a direct parametric equivalent to the SS310L RTG. Both parts maintain identical electrical specifications (100 V, 3 A, 850 mV forward voltage). The primary distinction is packaging format and product status. The equivalent part is classified as "Not For New Designs," indicating it remains available for legacy system support and replacement applications but is not recommended for new product development. Selection of this equivalent is appropriate when exact electrical performance matching is required and packaging format flexibility exists.

Similar Parts - Vishay eSMP® Series (SS1FH10 and SS2FH10 variants): The Vishay General Semiconductor eSMP® series parts are classified as similar alternatives due to current rating variations. These parts are suitable for applications where the required current does not exceed their rated capacity:

SS1FH10-M3/H and SS1FH10HM3/H: Rated for 1 A average rectified current. Selection is appropriate for circuits requiring ≤ 1 A operation.
SS2FH10-M3/H and SS2FH10HM3/H: Rated for 2 A average rectified current. Selection is appropriate for circuits requiring ≤ 2 A operation.

All Vishay alternatives maintain Active product status, indicating full availability for new designs. The SS1FH10HM3/H and SS2FH10HM3/H variants include AEC-Q101 automotive qualification, suitable for automotive-grade applications. All Vishay parts feature extended operating temperature range (-55 to 175°C) compared to the main part (-55 to 150°C), providing additional thermal margin in high-temperature environments.

Compliance and Certification: All listed parts maintain ROHS3 compliance, unlimited moisture sensitivity level (MSL 1), and REACH unaffected status, ensuring regulatory compatibility across industrial and commercial applications.

Frequently Asked Questions (FAQ)

Q: Can the SS310L RTG be directly replaced with the SS310L (Tape & Reel variant)?

A: Yes. Both parts are parametric equivalents with identical electrical specifications (100 V, 3 A, 850 mV forward voltage) and DO-219AB package format. The difference is packaging presentation (Tape & Reel versus standard packaging) and product status. The equivalent part is classified as "Not For New Designs" but remains suitable for replacement and legacy applications.

Q: What is the difference between the main part and the Vishay eSMP® series alternatives?

A: The primary difference is current rating. The SS310L RTG is rated for 3 A, while the Vishay alternatives are rated for either 1 A (SS1FH10 series) or 2 A (SS2FH10 series). All parts share the same 100 V voltage rating, DO-219AB package, and fast recovery speed characteristics. Vishay parts are suitable only for applications requiring current at or below their respective ratings.

Q: Are the Vishay eSMP® parts suitable for automotive applications?

A: The SS1FH10HM3/H and SS2FH10HM3/H variants include AEC-Q101 automotive qualification, making them suitable for automotive-grade applications. The SS1FH10-M3/H and SS2FH10-M3/H variants do not carry automotive qualification.

Q: What is the impact of selecting a lower-current-rated substitute?

A: Selecting a lower-current-rated part (1 A or 2 A) is appropriate only when the circuit design operates within that current limit. Operating a diode above its rated current causes excessive heat generation, reduced component lifespan, and potential circuit failure. Current rating selection must match or exceed the maximum forward current requirement of the application.

Q: Do all substitute parts maintain the same package footprint?

A: Yes. All listed parts use the DO-219AB (Sub SMA) package format with surface mount mounting type. PCB footprints are identical, allowing direct physical replacement without layout modification.

Q: What is the significance of the "Not For New Designs" status on the SS310L equivalent?

A: This status indicates the part remains available for purchase and replacement applications but is not recommended for incorporation into new product designs. It reflects manufacturer intent to phase out this specific variant in favor of newer alternatives. For new designs, selection of Active-status parts (Vishay eSMP® series) is preferred.

Q: How do reverse leakage current specifications compare across the parts?

A: The main part (SS310L RTG) specifies 100 µA reverse leakage at 100 V. The Vishay alternatives specify 5 µA reverse leakage, representing significantly lower leakage current. Lower reverse leakage improves circuit efficiency and reduces standby power consumption, providing a performance advantage in applications sensitive to leakage current.

Q: Can the SS310L RTG be used in circuits designed for the Vishay 2 A parts?

A: Yes. The SS310L RTG (3 A rating) can be used in circuits designed for 2 A operation, as it provides higher current capacity. However, the reverse is not true: a 2 A part cannot be used in a circuit requiring 3 A operation.

Q: What is the operating temperature range difference?

A: The SS310L RTG operates from -55°C to 150°C junction temperature. The Vishay eSMP® alternatives operate from -55°C to 175°C, providing 25°C additional high-temperature margin. This extended range is beneficial in high-temperature environments or applications with limited thermal management.

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