Taiwan Semiconductor Corporation SRAS2030 MNG

Overview

SRAS2030 MNG from Taiwan Semiconductor is a 20A, 30V Schottky barrier rectifier in TO-263AB (D2PAK) package, optimized for high-efficiency DC/DC conversion with low forward voltage (0.57 V at 20 A, 25°C) and high surge capability (330 A). It serves as the primary output rectifier in compact switching power supplies.

For engineers reviewing the SRAS2030 MNG datasheet, SRAS2030 MNG pinout, SRAS2030 MNG application, or SRAS2030 MNG equivalent, key selection criteria include its 30 V repetitive peak reverse voltage, 1.5 °C/W junction-to-case thermal resistance, moisture sensitivity level 1 rating, and compatibility with automated SMT placement per J-STD-020.

Technical Context

This single-die Schottky rectifier uses a guard ring structure to enhance overvoltage robustness and supports continuous forward current up to 20 A at case temperatures ≤110°C. Its low VF minimizes conduction loss in high-frequency SMPS topologies operating at 100–500 kHz.

The device exhibits 500 µA maximum reverse leakage at 25°C and rated VR, rising to 15 mA at 100°C - a critical parameter for thermal design in enclosed adapters. Thermal performance is defined by R_θJC = 1.5 °C/W, enabling direct heatsinking via the exposed cathode tab.

Key Specifications

Pinout & Package

TO-263AB (D2PAK) package with three terminals: Anode (lead 1), Cathode (exposed tab/lead 2), and no third functional terminal - the third lead is electrically connected to the cathode tab. The cathode tab provides both electrical connection and primary thermal path.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-20CPH03-M3 and SB2030, SRAS2030 MNG delivers balanced performance: lower VF than SB2030 improves light-load efficiency, while avoiding the automotive qualification premium of VS-20CPH03-M3 - making it optimal for cost-sensitive industrial and consumer power designs.

Availability

SRAS2030 MNG is available at Aetrix Electronics and suitable for switching mode power supplies, DC/DC converters, and AC adapters requiring stable component supply, RoHS/halogen-free compliance, and MSL Level 1 manufacturability.

Supply support for SRAS2030 MNG 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 SRAS20xx series belongs to TSC's high-current Schottky rectifier product line, engineered specifically for high-efficiency, surface-mount secondary-side rectification in compact, thermally constrained AC/DC and DC/DC power converters.

FAQ

What is the maximum junction temperature rating for SRAS2030 MNG?

The SRAS2030 MNG has a maximum junction temperature (T_J) of +150°C, verified per absolute maximum ratings in the official TSC datasheet. This allows sustained operation in high-ambient environments such as enclosed industrial power supplies. Derating begins above T_C = 110°C, where I_F must be reduced linearly to zero at 150°C case temperature. SRAS2030 MNG maintains full 20 A rating only when thermal design ensures T_C ≤ 110°C.

Does SRAS2030 MNG have a guarded junction, and why does it matter?

Yes, SRAS2030 MNG incorporates a guard ring structure explicitly stated in its features list. This design mitigates edge breakdown under high dv/dt conditions typical in fast-switching SMPS, improving reliability during voltage transients. The guard ring enhances ruggedness without increasing VF or reducing efficiency - a key differentiator versus unguarded Schottky rectifiers. SRAS2030 MNG leverages this for stable operation in quasi-resonant and LLC converters.

What is the reverse leakage current specification for SRAS2030 MNG at elevated temperature?

At 100°C junction temperature, SRAS2030 MNG specifies a maximum reverse leakage current (I_R) of 15 mA under rated reverse voltage (30 V), per the Electrical Specifications table. At 25°C, leakage is limited to 500 µA. This temperature-dependent behavior is critical for thermal design - excessive leakage at high T_J contributes to thermal runaway in poorly heatsinked layouts. SRAS2030 MNG's 15 mA value is measured under standardized pulse conditions (PW = 30 ms).

Is SRAS2030 MNG compatible with lead-free reflow processes?

Yes, SRAS2030 MNG features matte tin-plated leads compliant with J-STD-002 for solderability, and its TO-263AB package is rated for standard lead-free reflow profiles (peak temperature up to 260°C). Its moisture sensitivity level is Grade 1 per J-STD-020, meaning it can be stored indefinitely in ambient conditions without baking prior to assembly. SRAS2030 MNG is fully qualified for IPC-A-610 Class 2 and Class 3 manufacturing.

How does the thermal resistance of SRAS2030 MNG impact PCB layout?

With a junction-to-case thermal resistance (R_θJC) of 1.5 °C/W, SRAS2030 MNG requires direct thermal coupling from its exposed cathode tab to a large copper area (≥4 cm² recommended) or external heatsink. Layout must avoid thermal vias under the tab - instead, use solid copper pour connected to internal ground planes via ≥8 thermal vias (0.3 mm diameter). Poor thermal routing causes junction temperature to exceed 150°C even at moderate loads. SRAS2030 MNG's low R_θJC enables compact, fanless designs when implemented correctly.