Taiwan Semiconductor Corporation SSL34 V7G

Overview

SSL34 V7G from Taiwan Semiconductor is a 3A, 40V Schottky barrier surface-mount rectifier in DO-214AB (SMC) package, featuring VF ≤ 0.41V at 3A/25°C, IFSM = 100A, TJ max = 125°C, and cathode-band polarity indication - used in high-efficiency AC/DC converters and LED lighting power stages.

For engineers reviewing the SSL34 V7G datasheet, SSL34 V7G pinout, SSL34 V7G application, or SSL34 V7G equivalent, key selection criteria include reverse voltage rating (40V), forward surge capability (100A), thermal resistance (RθJA = 53°C/W), moisture sensitivity level (J-STD-020 Level 1), and RoHS/halogen-free compliance for industrial power supply design.

Technical Context

This Schottky rectifier uses a single-die construction optimized for low conduction loss in medium-current DC-DC and offline SMPS outputs. Its 40V VRRM rating targets 24V–36V input rails with margin, while RθJL = 13°C/W enables efficient heat transfer to PCB copper pads under continuous 3A load.

The device operates across –55°C to +125°C junction temperature range and supports automated SMT placement with matte tin-plated leads compliant to J-STD-002. Guard ring structure provides overvoltage protection without compromising switching speed or leakage performance.

Key Specifications

Pinout & Package

DO-214AB (SMC) surface-mount package with cathode indicated by molded band; 2-terminal configuration (anode/cathode), lead-free matte tin plating, UL 94V-0 molding compound, and JESD201 Class 2 whisker resistance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-3EWH04-M3/45 and MBR340F-E3/45, SSL34 V7G delivers lower VF (≤0.41V) and tighter IR (≤500 µA), making it optimal for high-efficiency, thermally managed industrial power supplies where DO-214AB mechanical robustness and J-STD-020 Level 1 handling are required.

Availability

SSL34 V7G is available at Aetrix Electronics and suitable for AC/DC adapters, LED lighting drivers, industrial DC-DC converters, and telecom hold-up circuits requiring stable component supply, long-term lifecycle support, and traceable green-material sourcing.

Supply support for SSL34 V7G 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 diodes, MOSFETs, and bipolar transistors since 1979.

The SSL32–SSL34 series is part of TSC's high-reliability Schottky rectifier product line, engineered specifically for efficiency-critical secondary-side rectification in industrial and commercial power conversion systems operating up to 125°C junction temperature.

FAQ

What is the maximum junction temperature rating for SSL34 V7G?

The SSL34 V7G has a maximum junction temperature (TJ max) of +125°C, verified per absolute maximum ratings in the official Taiwan Semiconductor datasheet Version K2310. This rating applies under continuous forward conduction at rated IF = 3A with proper PCB thermal management (16mm × 16mm Cu pad). Exceeding this temperature risks parametric shift and long-term reliability degradation. Always refer to the SSL34 V7G derating curve when operating above 75°C ambient.

Does SSL34 V7G have a halogen-free and RoHS-compliant construction?

Yes, SSL34 V7G is both halogen-free and RoHS-compliant, as explicitly stated in the "Features" section of the Taiwan Semiconductor SSL32–SSL34 datasheet (Version K2310). The molding compound meets UL 94V-0 flammability rating, and terminals use matte tin plating compliant with J-STD-002 solderability standards. These attributes are confirmed for SSL34 V7G and align with EU Directive 2011/65/EU and IEC 61249-2-21.

What is the reverse leakage current specification for SSL34 V7G at 40V and 100°C?

At VR = 40V and TJ = 100°C, the SSL34 V7G exhibits a maximum reverse leakage current (IR) of 100 mA, per the "ELECTRICAL SPECIFICATIONS" table in the Taiwan Semiconductor datasheet. This value reflects worst-case behavior under elevated temperature stress and is critical for evaluating standby power loss in high-ambient-temperature applications such as enclosed LED drivers or industrial enclosures.

Is SSL34 V7G suitable for automated SMT assembly processes?

Yes, SSL34 V7G is designed for automated surface-mount placement, as confirmed in the "FEATURES" list of the official datasheet. It carries J-STD-020 Moisture Sensitivity Level 1, eliminating pre-bake requirements, and features matte tin-plated leads qualified per J-STD-002 for reliable solder wetting. Its DO-214AB (SMC) package geometry supports standard pick-and-place nozzle compatibility and reflow profile stability.

What does the marking code 'SL34' indicate on SSL34 V7G?

The marking code 'SL34' laser-etched on the SSL34 V7G case identifies it as the 40V variant within the SSL32–SSL34 family, per the "ABSOLUTE MAXIMUM RATINGS" table in the Taiwan Semiconductor datasheet. 'SL32', 'SL33', and 'SL34' correspond to 20V, 30V, and 40V VRRM ratings respectively - confirming that SSL34 V7G is the 40V-rated member of this Schottky rectifier series.