Taiwan Semiconductor Corporation SSL13

Overview

SSL13 from Taiwan Semiconductor is a 1A, 30V Schottky barrier surface-mount rectifier in DO-214AC (SMA) package, designed for high-efficiency DC/DC conversion with low forward voltage (VF ≤ 0.39 V at 1 A), high surge current capability (IFSM = 50 A), and junction temperature up to +125°C. It serves as a primary output rectifier in compact AC/DC adapters and SMPS.

For engineers reviewing the SSL13 datasheet, SSL13 pinout, SSL13 application, or SSL13 equivalent, key selection criteria include its 30 V repetitive peak reverse voltage (VRRM), moisture sensitivity level 1 compliance, RoHS/halogen-free status, matte tin-plated leads per J-STD-002, and suitability for automated SMT placement.

Technical Context

The SSL13 employs a single-die Schottky structure optimized for low conduction loss in medium-voltage switching applications. Its thermal design supports R_θJL = 28°C/W and R_θJA = 88°C/W, enabling reliable operation under continuous 1 A forward current at ambient temperatures up to 75°C with standard PCB copper area.

Electrical behavior is characterized by low VF (≤0.39 V @ 1 A, 25°C), tight IR control (≤200 μA @ 30 V, 25°C), and robust transient immunity - evidenced by 50 A non-repetitive surge rating (8.3 ms half-sine) and guard-ring-enhanced overvoltage protection.

Key Specifications

Pinout & Package

Package: DO-214AC (SMA), surface-mount plastic case with cathode band polarity indicator; dimensions per JEDEC DO-214AC Issue D; weight ≈ 0.066 g.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Schottky rectifier applications.

Compared with SS13 and SB130, the SSL13 delivers the lowest VF (≤0.39 V), best thermal resistance (R_θJL = 28°C/W), and strictest IR specification (≤200 μA @ 30 V), making it optimal for high-density, high-efficiency adapter and monitor power designs where thermal headroom and leakage control are critical.

Availability

SSL13 is available at Aetrix Electronics and suitable for AC/DC adapters, monitor power supplies, and industrial DC/DC converters requiring stable component supply, full RoHS/halogen-free compliance, and MSL Level 1 manufacturability.

Supply support for SSL13 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in power rectifiers, TVS devices, and MOSFETs for industrial and consumer markets.

The SSL1x series was developed specifically for high-volume, cost-sensitive switching power supplies demanding low VF, robust surge handling, and seamless SMT integration - targeting adapter, monitor, and TV OEMs.

FAQ

What is the maximum repetitive peak reverse voltage (VRRM) of the SSL13?

The SSL13 has a VRRM of 30 V, as specified in the Absolute Maximum Ratings table. This value is confirmed across all official TSC documentation versions (I2304) and distinguishes SSL13 from SSL12 (20 V) and SSL14 (40 V). The 30 V rating ensures safe operation in 24 V nominal systems with typical transient overshoots up to 30 V. SSL13 must not be used in circuits where reverse voltage exceeds this limit.

Does the SSL13 have a defined forward voltage (VF) specification, and under what conditions?

Yes, the SSL13 specifies VF ≤ 0.39 V at IF = 1 A and TJ = 25°C, per the Electrical Specifications table. This is a maximum value measured using a 0.3 ms pulse test. At higher junction temperatures (e.g., 100°C), VF decreases slightly, but system design should use the 25°C max value for worst-case loss calculation. SSL13's VF is lower than many competing 30 V Schottky rectifiers, contributing directly to improved converter efficiency.

Is the SSL13 suitable for lead-free reflow soldering processes?

Yes, the SSL13 features matte tin-plated leads qualified per J-STD-002 for solderability, and its DO-214AC package is rated for lead-free reflow profiles (peak temperature ≤ 260°C). Its moisture sensitivity level is Level 1 per J-STD-020, meaning no dry-pack or baking is required prior to assembly - enabling direct use on standard SMT lines without process modification.

What is the thermal resistance from junction to lead (R_θJL) for the SSL13, and why does it matter?

The SSL13 has a typical R_θJL of 28°C/W, as published in the Thermal Performance section. This parameter quantifies how effectively heat transfers from the silicon die to the PCB copper via the leads. A low R_θJL like 28°C/W allows efficient conduction cooling - especially important when using internal copper pours - and reduces reliance on airflow or external heatsinks in compact power designs using SSL13.

How does the SSL13's reverse leakage current (IR) compare across temperature, and what design impact does that have?

At 25°C and rated VR = 30 V, SSL13's IR is ≤200 μA; at 100°C, IR rises to ≤50 mA. This strong temperature dependence means IR dominates standby power loss in high-temperature environments. Designers must verify that 50 mA leakage at elevated TJ does not exceed system-level standby budget - particularly in always-on monitor or TV auxiliary rails where SSL13 may operate near 100°C.