Taiwan Semiconductor Corporation SSL22H

Overview

SSL22H from Taiwan Semiconductor is a 200 V, 2 A surface-mount Schottky barrier rectifier in DO-214AA (SMB) package, featuring low forward voltage drop (VF = 0.85 V @ IF = 2 A), fast recovery time (<50 ns), and operating junction temperature range of −55 °C to +125 °C - used in DC/DC converters, AC/DC secondary-side rectification, and high-frequency switching power supplies.

For engineers reviewing the SSL22H datasheet, SSL22H pinout, SSL22H application, or SSL22H equivalent, key selection criteria include VF vs. IF performance at 100 °C, surge current rating (IFSM = 50 A), thermal resistance (RθJA = 60 °C/W), and SMB package compatibility with automated SMT assembly.

Technical Context

The SSL22H is a planar-doped, epitaxial silicon Schottky diode optimized for high-efficiency, medium-current rectification in switching-mode power supplies. Its metal–semiconductor junction enables majority-carrier conduction, eliminating minority-carrier storage delay and enabling sub-50 ns reverse recovery.

Thermal design is constrained by its DO-214AA package with 60 °C/W junction-to-ambient thermal resistance under standard JEDEC PCB conditions. The device supports repetitive peak reverse voltage (VRRM) of 200 V and continuous forward current (IF(AV)) of 2 A at TC = 110 °C.

Key Specifications

Pinout & Package

DO-214AA (SMB) molded plastic package per JEDEC standard, with cathode indicated by band marking on body; anode and cathode terminals are accessible via two gull-wing leads.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SSL22H, SS22H offers identical electrical specs and mechanical fit but slightly higher thermal resistance, while SB220 trades package compatibility for lower VF and reduced area - making SSL22H optimal for drop-in reliability upgrades in legacy SMB layouts.

Availability

SSL22H is available at Aetrix Electronics and suitable for AC/DC adapters, DC/DC converters, LED drivers, and automotive body control modules requiring stable component supply across extended temperature and surge conditions.

Supply support for SSL22H 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, serving industrial, computing, and consumer markets since 1979.

The SSL22H belongs to TSC's high-reliability Schottky rectifier product line, engineered for robustness in high-temperature, high-surge industrial power conversion systems.

FAQ

What is the maximum junction temperature rating for SSL22H?

The SSL22H has a specified maximum junction temperature (TJ) of +125 °C, validated per JEDEC JESD22-A108. This rating allows continuous operation in high-ambient environments such as enclosed power supplies or under-hood automotive locations. Derating curves in the SSL22H datasheet confirm 2 A average current is sustainable at TC = 110 °C, ensuring margin for thermal transients. SSL22H maintains stable VF and leakage performance up to this limit.

Does SSL22H meet RoHS and halogen-free requirements?

Yes, SSL22H uses green compound packaging compliant with RoHS Directive 2011/65/EU and halogen-free standards (IEC 61249-2-21). The "G" in the marking code (GYWF) explicitly denotes halogen-free molding compound. SSL22H also complies with JEDEC JS-001 ESD classification (HBM Class 2, ≥2 kV), supporting safe handling in standard SMT lines without special ESD controls.

What is the reverse recovery time (trr) specification for SSL22H?

The SSL22H exhibits a reverse recovery time (trr) of less than 50 ns under test conditions of IF = 2 A, VR = 20 V, and di/dt = 100 A/μs. As a Schottky diode, it achieves this through majority-carrier conduction - eliminating minority-carrier storage delay. This fast soft recovery makes SSL22H suitable for switching frequencies up to 1 MHz in PFC and DC/DC stages without significant switching loss penalties.

Can SSL22H replace older SSL22 or SSL22A variants in existing designs?

SSL22H is a direct replacement for SSL22 and SSL22A in most applications due to identical DO-214AA package, pinout, and VRRM/IF ratings. Key improvements include enhanced surge robustness (IFSM increased to 50 A) and tighter VF distribution at high temperature. No PCB changes are required, but designers should verify thermal performance using the updated RθJA = 60 °C/W value in their layout simulation.

What is the marking code format for SSL22H on the device body?

The SSL22H is marked with a 4-character code: first character is part number prefix (e.g., "22H"), followed by "G" for green compound, "YW" for date code (year-week), and "F" for factory code. Example: "22HG24F" indicates SSL22H, green compound, week 24 of year, Fab F. The cathode band is located adjacent to the marking, confirming terminal polarity for automated optical inspection.