Taiwan Semiconductor Corporation SSL33HR7G

Overview

SSL33HR7G from Taiwan Semiconductor is a 3A, 30V Schottky barrier surface-mount rectifier in DO-214AB (SMC) package, featuring low forward voltage (0.41 V max at 3 A), high surge current capability (100 A), and junction temperature range of –55°C to +125°C. It serves as a primary output rectifier in compact, high-efficiency AC/DC adapters and DC/DC converters.

For engineers reviewing the SSL33HR7G datasheet, SSL33HR7G pinout, SSL33HR7G application, or SSL33HR7G equivalent, key selection criteria include repetitive peak reverse voltage (30 V), thermal resistance (R_θJL = 13 °C/W), moisture sensitivity level (MSL 1), RoHS/halogen-free compliance, and cathode-band polarity marking for reliable PCB assembly and thermal management in space-constrained power supplies.

Technical Context

This Schottky rectifier uses a single-die construction with guard ring overvoltage protection and matte tin-plated leads compliant with J-STD-002 solderability. Its low VF enables reduced conduction loss in high-frequency switching topologies, while the DO-214AB package supports automated placement and delivers R_θJA = 53 °C/W on a 16 mm × 16 mm Cu pad test board.

The device exhibits IR ≤ 200 μA at 30 V and 25°C, rising to ≤ 50 mA at 100°C - critical for maintaining efficiency in thermally stressed converter outputs. Reverse recovery is inherently negligible due to Schottky architecture, eliminating switching tail current and associated EMI in SMPS designs.

Key Specifications

Pinout & Package

Package: DO-214AB (SMC), surface-mount, molded plastic case meeting UL 94V-0; weight ≈ 0.210 g; cathode indicated by visible band.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-3EY30-M3/57T and SB330, the SSL33HR7G offers superior thermal performance (R_θJL = 13 °C/W) and tighter forward voltage control, enabling higher power density and reliability in thermally constrained USB PD and industrial DC/DC designs.

Availability

SSL33HR7G is available at Aetrix Electronics and suitable for AC/DC adapters, LED drivers, and industrial DC/DC converters requiring stable component supply, long-term manufacturability, and MSL-1 handling without baking.

Supply support for SSL33HR7G 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, and MOSFETs for industrial and consumer markets.

The SSL32–SSL34 family was designed specifically for high-efficiency, surface-mount secondary-side rectification in compact off-line power supplies, balancing low VF, robust surge capability, and JEDEC-standard packaging for global SMT scalability.

FAQ

What is the maximum repetitive peak reverse voltage (V_RRM) for SSL33HR7G?

The SSL33HR7G has a V_RRM of 30 V, as confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version K2310). This rating defines the highest reverse voltage the device can block repeatedly without breakdown and applies directly to SSL33HR7G - not the broader SSL32–SSL34 series average. Designers must ensure circuit peak reverse stress remains below this value with appropriate safety margin.

Is SSL33HR7G compatible with lead-free reflow soldering processes?

Yes, SSL33HR7G features matte tin-plated leads qualified per J-STD-002 for solderability, supporting standard lead-free reflow profiles (e.g., JEDEC J-STD-020 Class 3 peak of 260°C). Its MSL Level 1 rating means it can be stored indefinitely before use without dry-pack or baking - a key advantage for just-in-time SMT lines handling SSL33HR7G.

Does SSL33HR7G have a specified junction-to-case thermal resistance (R_θJC)?

Yes, the SSL33HR7G datasheet specifies R_θJC = 15 °C/W. This value reflects heat transfer from junction to the plastic case surface and is measured under standardized conditions. While R_θJL = 13 °C/W is more relevant for PCB-mounted thermal design, R_θJC helps evaluate potential benefit from external heatsinking if applied directly to the molded body - though not typical for DO-214AB devices like SSL33HR7G.

What is the reverse leakage current (I_R) of SSL33HR7G at 100°C?

At 100°C and rated reverse voltage (30 V), the SSL33HR7G exhibits a maximum reverse leakage current of 50 mA, as stated in the Electrical Specifications table. This elevated IR at high temperature is typical for Schottky diodes and must be accounted for in thermal design - especially in high-ambient environments where cumulative leakage may affect light-load regulation or standby power in systems using SSL33HR7G.

How is polarity indicated on the SSL33HR7G package?

Polarity on the SSL33HR7G is indicated by a distinct cathode band printed on the molded body of the DO-214AB (SMC) package. This band aligns with the cathode terminal and is visible under standard AOI systems. The marking diagram in the datasheet confirms "GYWF" format with the band positioned adjacent to the cathode end - ensuring unambiguous orientation during SSL33HR7G placement and visual inspection.