SS15L Equivalent & Substitute Parts

Part Overview

The SS15L is a Schottky rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 50 V DC reverse voltage and 1 A average rectified current in a Sub SMA surface mount package (DO-219AB). The device is classified as "Not For New Designs," indicating it is an obsolete or legacy component. Equivalent and substitute parts are necessary to support existing designs, facilitate production continuity, and provide alternatives where the original part is unavailable or where design requirements permit upgraded specifications.

Key Parameters

Parameter	Value	Unit
Technology	Schottky	—
Voltage - DC Reverse (Vr) (Max)	50	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	700 mV @ 1 A	—
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Current - Reverse Leakage @ Vr	400 µA @ 50 V	—
Mounting Type	Surface Mount	—
Package / Case	DO-219AB	—
Operating Temperature - Junction	-55 to 150	°C
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the SS15L are classified into two categories based on electrical and mechanical compatibility:

Parametric Equivalents (Identical Electrical Specifications)

Parametric equivalent parts maintain identical electrical characteristics: 50 V reverse voltage rating, 1 A average rectified current, 700 mV forward voltage drop at 1 A, fast recovery speed, and 400 µA reverse leakage current at 50 V. These parts are housed in the same DO-219AB Sub SMA package and operate across the identical temperature range (-55°C to 150°C). Parametric equivalents differ only in manufacturing date codes or internal process variations, indicated by suffix designations (M2G, MHG, MTG, R3G, RFG, RHG, RQG, RTG, RUG). All parametric equivalents carry Active product status and ROHS3 compliance.

Manufacturer Recommended Substitute (Upgraded Specifications)

The SS16LW represents a manufacturer-recommended upgrade path. While it maintains the same 1 A current rating and identical forward voltage characteristics, it provides an elevated 60 V reverse voltage rating compared to the original 50 V specification. The SS16LW is packaged in SOD-123W, a different surface mount package format. This part carries Active product status and is suitable for new designs where the higher voltage rating is acceptable and package compatibility can be accommodated.

Parameter Comparison

Parameter	SS15L	SS15L M2G	SS15L MHG	SS15L MTG	SS15L R3G	SS15L RFG	SS15L RHG	SS15L RQG	SS15L RTG	SS15L RUG	SS16LW
Voltage - DC Reverse (Vr) (Max)	50 V	50 V	50 V	50 V	50 V	50 V	50 V	50 V	50 V	50 V	60 V
Current - Average Rectified (Io)	1 A	1 A	1 A	1 A	1 A	1 A	1 A	1 A	1 A	1 A	1 A
Voltage - Forward (Vf) (Max) @ If	700 mV @ 1 A	700 mV @ 1 A	700 mV @ 1 A	700 mV @ 1 A	700 mV @ 1 A	700 mV @ 1 A	700 mV @ 1 A	700 mV @ 1 A	700 mV @ 1 A	700 mV @ 1 A	700 mV @ 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	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 @ 50 V	400 µA @ 50 V	400 µA @ 50 V	400 µA @ 50 V	400 µA @ 50 V	400 µA @ 50 V	400 µA @ 50 V	400 µA @ 50 V	400 µA @ 50 V	400 µA @ 50 V	100 µA @ 60 V
Package / Case	DO-219AB	DO-219AB	DO-219AB	DO-219AB	DO-219AB	DO-219AB	DO-219AB	DO-219AB	DO-219AB	DO-219AB	SOD-123W
Operating Temperature - Junction	-55 to 150°C	-55 to 150°C	-55 to 150°C	-55 to 150°C	-55 to 150°C	-55 to 150°C	-55 to 150°C	-55 to 150°C	-55 to 150°C	-55 to 150°C	-55 to 150°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Not For New Designs	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications)

The parametric equivalent parts SS15L M2G, SS15L MHG, SS15L MTG, SS15L R3G, SS15L RFG, SS15L RHG, SS15L RQG, SS15L RTG, and SS15L RUG are suitable for direct substitution in existing designs. These parts maintain 100% electrical and mechanical compatibility with the original SS15L, including identical voltage ratings, current capacity, forward voltage characteristics, and package form factor. All parametric equivalents carry Active product status and ROHS3 compliance, ensuring regulatory alignment and long-term availability. Selection among these equivalents may be based on inventory availability and packaging format (SS15L RUG is supplied in Tape & Reel format; others are supplied without specified packaging).

For Upgraded Designs

The SS16LW is designated as the manufacturer-recommended substitute and is suitable for applications where the design can accommodate a higher 60 V reverse voltage rating and a different surface mount package (SOD-123W instead of DO-219AB). The SS16LW offers improved reverse leakage characteristics (100 µA @ 60 V versus 400 µA @ 50 V) and carries Active product status, making it appropriate for new design implementations. Package compatibility must be verified before selection, as the SOD-123W footprint differs from the DO-219AB Sub SMA package.

Frequently Asked Questions (FAQ)

Q: Can I use SS15L parametric equivalents interchangeably with the original SS15L?

A: Yes. Parametric equivalent parts (SS15L M2G, SS15L MHG, SS15L MTG, SS15L R3G, SS15L RFG, SS15L RHG, SS15L RQG, SS15L RTG, SS15L RUG) are electrically and mechanically identical to the original SS15L. They maintain the same 50 V reverse voltage, 1 A current rating, 700 mV forward voltage drop, and DO-219AB package. These parts are direct substitutes requiring no circuit modifications.

Q: What is the difference between parametric equivalents and the SS16LW?

A: Parametric equivalents maintain identical electrical specifications to the SS15L (50 V reverse voltage). The SS16LW is a manufacturer-recommended upgrade with a higher 60 V reverse voltage rating and a different package format (SOD-123W). The SS16LW is suitable only if the circuit design can accommodate the higher voltage rating and the PCB layout supports the SOD-123W footprint.

Q: Why does the SS15L have "Not For New Designs" status while substitutes are Active?

A: The SS15L is classified as obsolete or legacy. Parametric equivalents and the SS16LW carry Active status, indicating they are currently manufactured and supported for ongoing production. For new designs, Active-status parts ensure long-term availability and supply chain stability.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. The original SS15L and all substitute parts listed (parametric equivalents and SS16LW) are ROHS3 compliant, meeting environmental and regulatory requirements for lead-free manufacturing.

Q: Can I substitute SS15L with SS16LW on an existing PCB?

A: Direct PCB substitution is not possible without layout modification. The SS16LW uses SOD-123W packaging, which has a different footprint than the DO-219AB Sub SMA package of the SS15L. PCB redesign and re-layout are required. However, the SS16LW is electrically compatible if the circuit design permits the higher 60 V voltage rating.

Q: What is the difference between SS15L RUG and other parametric equivalents?

A: SS15L RUG is supplied in Tape & Reel (TR) packaging format, matching the original SS15L packaging. Other parametric equivalents do not specify a packaging format in the provided data. All maintain identical electrical specifications and DO-219AB package form factor.

Q: Which substitute part should I select for production continuity?

A: For production continuity with zero design changes, select any parametric equivalent (SS15L M2G, SS15L MHG, SS15L MTG, SS15L R3G, SS15L RFG, SS15L RHG, SS15L RQG, SS15L RTG, or SS15L RUG). Selection may be based on current inventory levels and packaging availability. SS15L RUG is recommended if Tape & Reel packaging is required for automated assembly.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution eligibility is determined by: (1) Reverse voltage rating (Vr), (2) Average rectified current (Io), (3) Forward voltage drop (Vf), (4) Recovery speed, (5) Reverse leakage current, (6) Package form factor, and (7) Operating temperature range. Parametric equivalents match all these parameters. The SS16LW differs in reverse voltage rating and package, requiring design review before use.

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