SS12L Schottky Diode Equivalent & Substitute Parts

Part Overview

The SS12L is a surface mount Schottky rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 20 V DC reverse voltage and 1 A average rectified current. This component is classified as Active product status and is RoHS3 compliant. The SS12L operates across a junction temperature range of -55°C to 125°C and features fast recovery characteristics suitable for high-frequency switching applications.

Equivalent and substitute parts are identified when electrical parameters, mechanical compatibility, and package specifications align within acceptable tolerances for the application. This reference provides engineering-level guidance for component selection based on parametric equivalence and functional compatibility.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	20	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	450 mV @ 1 A	mV
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	ns
Current - Reverse Leakage @ Vr	400	µA @ 20 V
Package / Case	DO-219AB	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-55 to 125	°C
Technology	Schottky	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution eligibility for the SS12L is determined by the following critical parameters:

Electrical Compatibility Criteria:

Voltage - DC Reverse (Vr) (Max): Must equal or exceed 20 V
Current - Average Rectified (Io): Must equal or exceed 1 A
Technology: Schottky diode classification
Speed: Fast recovery characteristic ≤ 500ns for > 200mA

Mechanical Compatibility Criteria:

Package / Case: DO-219AB (Sub SMA equivalent packages acceptable)
Mounting Type: Surface Mount
Operating Temperature Range: Must encompass or match -55°C to 125°C junction temperature

Compliance Criteria:

RoHS3 Compliant status
REACH Unaffected status

Parts meeting all electrical parameters within the specified tolerances and housed in mechanically compatible packages are classified as parametric equivalents or functional substitutes. The SS12L (Tape & Reel packaging variant) and SL02-GS08 (Vishay General Semiconductor) satisfy these criteria with identical or superior electrical ratings.

Parameter Comparison

Parameter	SS12L (MTG)	SS12L (TR)	SL02-GS08
Manufacturer	Taiwan Semiconductor Corporation	Taiwan Semiconductor Corporation	Vishay General Semiconductor - Diodes Division
Voltage - DC Reverse (Vr) (Max)	20 V	20 V	20 V
Current - Average Rectified (Io)	1 A	1 A	1.1 A
Voltage - Forward (Vf) (Max) @ If	450 mV @ 1 A	450 mV @ 1 A	420 mV @ 1.1 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	400 µA @ 20 V	400 µA @ 20 V	250 µA @ 20 V
Reverse Recovery Time (trr)	—	—	10 ns
Package / Case	DO-219AB	DO-219AB	DO-219AB
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Operating Temperature - Junction	-55 to 125°C	-55 to 125°C	125°C (Max)
Product Status	Active	Not For New Designs	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

SS12L (MTG) - Primary Reference Part

The SS12L manufactured by Taiwan Semiconductor Corporation with MTG packaging is the primary reference component. This part carries Active product status, indicating ongoing manufacturing support and suitability for new designs. It is RoHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

SS12L (TR) - Parametric Equivalent with Packaging Variant

The SS12L in Tape & Reel packaging is electrically identical to the MTG variant, offering the same electrical specifications and compliance certifications. However, this variant is designated as Not For New Designs, indicating that Taiwan Semiconductor Corporation has discontinued active support for new applications. This part remains suitable for replacement or repair of existing assemblies where the MTG variant is unavailable, provided supply chain continuity is confirmed.

SL02-GS08 - Active Substitute with Enhanced Performance

The SL02-GS08 manufactured by Vishay General Semiconductor is an Active product offering superior electrical characteristics within the same package envelope. This part provides 1.1 A average rectified current (10% higher than the 1 A specification), reduced forward voltage drop (420 mV versus 450 mV), and lower reverse leakage current (250 µA versus 400 µA). The SL02-GS08 includes specified reverse recovery time of 10 ns. All three parts share identical 20 V reverse voltage rating, DO-219AB package compatibility, and RoHS3 compliance. The SL02-GS08 is recommended for new designs requiring active manufacturer support and enhanced performance margins.

Frequently Asked Questions (FAQ)

Q: Can the SS12L be replaced with the SL02-GS08 in existing designs?

A: Yes. Both parts share identical voltage ratings (20 V), compatible current ratings (1 A versus 1.1 A), identical package geometry (DO-219AB), and equivalent fast recovery speed characteristics. The SL02-GS08 offers improved performance with lower forward voltage drop and reduced reverse leakage. Electrical compatibility is confirmed across all critical parameters.

Q: What is the difference between SS12L (MTG) and SS12L (TR)?

A: Both variants are electrically identical with matching specifications for voltage, current, forward voltage drop, and reverse leakage. The primary difference is packaging format: MTG indicates standard packaging while TR denotes Tape & Reel format for automated assembly. The TR variant carries Not For New Designs status, whereas the MTG variant is Active. For new applications, the MTG variant is preferred.

Q: Is the SL02-GS08 a direct drop-in replacement?

A: The SL02-GS08 is mechanically and electrically compatible as a direct replacement. It occupies the same DO-219AB footprint and operates within the same temperature range. The enhanced current rating (1.1 A) and improved electrical characteristics provide additional performance margin without requiring circuit redesign.

Q: Are all three parts RoHS3 compliant?

A: Yes. The SS12L (MTG), SS12L (TR), and SL02-GS08 are all RoHS3 compliant with Moisture Sensitivity Level 1 (Unlimited). All parts are REACH unaffected and suitable for applications requiring environmental compliance certification.

Q: What is the operating temperature range for these parts?

A: The SS12L variants operate across -55°C to 125°C junction temperature. The SL02-GS08 specifies 125°C maximum junction temperature. For applications requiring the full -55°C to 125°C range, the SS12L variants provide explicit specification across the complete range.

Q: Can these parts be used interchangeably in high-frequency switching applications?

A: Yes. All three parts meet fast recovery speed requirements (≤ 500ns for > 200mA). The SL02-GS08 provides additional specification with 10 ns reverse recovery time, offering enhanced performance for high-frequency switching. Electrical compatibility is confirmed for switching applications within the specified voltage and current ratings.

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