Taiwan Semiconductor Corporation SSL23H

Overview

SSL23H from Taiwan Semiconductor is a surface-mount Schottky barrier rectifier rated for 200 V reverse voltage, 3 A average forward current, and low 0.85 V typical forward voltage at 3 A, optimized for high-efficiency AC/DC power supplies in industrial SMPS and LED drivers.

For engineers reviewing the SSL23H datasheet, SSL23H pinout, SSL23H application, or SSL23H equivalent, key selection criteria include its DO-214AA (SMB) package thermal performance, TJ = -55°C to +125°C operating range, and pulse current capability up to 100 A under 8.3 ms half-sine surge conditions.

Technical Context

The SSL23H operates as a unidirectional power rectifier with metal–semiconductor junction architecture enabling fast recovery (trr not specified but inherent to Schottky design) and minimal switching loss. Its thermal resistance RθJA is 50°C/W under standard PCB mounting, supporting continuous conduction mode operation at ambient temperatures up to 75°C with adequate copper area.

Designed for universal-input offline converters, the SSL23H sustains repetitive peak reverse voltage (VRRM) of 200 V and non-repetitive peak forward surge current (IFSM) of 100 A, validated per JEDEC DO-214AA mechanical outline and rated for 125°C junction temperature under full DC load.

Key Specifications

Pinout & Package

SSL23H uses a 2-terminal DO-214AA (SMB) plastic package with cathode indicated by a band on the body. Mounting requires minimum 4.2 mm × 2.6 mm pad layout per manufacturer recommendation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SSL23H, SS3H20 offers a 0.03 V lower forward voltage for marginal efficiency gain in space-constrained adapters, while SB320 trades 0.02 V higher VF for broader historical qualification across telecom platforms-both require no PCB changes due to identical DO-214AA footprint and pin assignment.

Availability

SSL23H is available at Aetrix Electronics and suitable for industrial SMPS, LED driver secondary rectification, AC/DC adapter output stages, and telecom power supply input bridges requiring stable component supply across multi-year production cycles.

Supply support for SSL23H 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 global power electronics markets since 1979.

The SSL22H–SSL24H series targets cost-sensitive, high-volume AC/DC power conversion applications where reliability, thermal robustness, and JEDEC-standard packaging are critical for automated manufacturing.

FAQ

What is the maximum junction temperature rating for SSL23H?

The SSL23H is rated for continuous operation up to +125°C junction temperature, validated under full 3 A DC load with TC = 110°C. This allows deployment in sealed LED driver housings and industrial control units without active cooling, provided PCB copper area meets TSC's recommended 4.2 mm × 2.6 mm pad layout. SSL23H maintains parameter stability across its full -55°C to +125°C operating range.

Does SSL23H have a specified reverse recovery time (trr)?

No, SSL23H does not specify reverse recovery time (trr) because it is a Schottky barrier rectifier, which operates via majority-carrier conduction and exhibits negligible stored charge. Its switching behavior is inherently fast and lossless compared to PN-junction diodes, making SSL23H suitable for high-frequency SMPS topologies like QR flyback and active clamp forward converters without snubber networks.

What is the surge current capability of SSL23H, and how is it tested?

SSL23H supports a non-repetitive peak forward surge current (IFSM) of 100 A, tested using an 8.3 ms single half-sine waveform per IEC 61000-4-5 Annex A. This rating validates robustness against cold-start inrush, lightning-induced transients, and AC line surges in offline power supplies. The value is measured at TJ = 25°C with specified pulse width and duty cycle, and remains valid down to TJ = -55°C per TSC characterization data for SSL22H–SSL24H.

Is SSL23H compatible with lead-free reflow soldering processes?

Yes, SSL23H is qualified for lead-free reflow soldering per J-STD-020D, with a peak reflow temperature of 260°C for up to 30 seconds. Its green compound molding material and DO-214AA package construction meet RoHS Directive 2011/65/EU and REACH SVHC requirements. SSL23H has passed MSL Level 1 classification, meaning it may be placed directly on PCBs without baking prior to reflow.

How does SSL23H compare to SSL22H and SSL24H in terms of electrical ratings?

SSL23H shares identical VRRM (200 V), IF(AV) (3 A), VF (0.85 V @ 3 A), and IFSM (100 A) ratings with SSL22H and SSL24H; the only distinction is the part-marking code ('23' vs. '22'/'24') indicating internal wafer lot or test bin differentiation. All three devices use the same DO-214AA package, thermal design, and reliability qualification-SSL23H is functionally interchangeable with SSL22H and SSL24H in circuit design and layout.