Taiwan Semiconductor Corporation SRA8150

Overview

SRA8150 from Taiwan Semiconductor is a single-die, TO-220AC packaged Schottky barrier rectifier rated for 150 V repetitive peak reverse voltage (V_RRM), 8 A average forward current (I_F), and 150 A non-repetitive surge current (I_FSM), operating up to 150 °C junction temperature - used in high-efficiency DC/DC converters and industrial SMPS where low forward voltage drop and robust surge handling are critical.

For engineers reviewing the SRA8150 datasheet, SRA8150 pinout, SRA8150 application, or SRA8150 equivalent, key selection factors include its 0.95 V forward voltage at 8 A/25 °C, 100 µA reverse leakage at rated V_R and 25 °C, 4 °C/W junction-to-case thermal resistance, AEC-Q101 qualification option (SRA8150H), and TO-220AC mechanical compatibility with standard heatsink mounting.

Technical Context

The SRA8150 implements a planar Schottky junction structure with integrated guard ring for overvoltage protection and meets JESD201 Class 2 whisker resistance. Its 150 V V_RRM rating targets mid-to-high voltage DC/DC stages where silicon diodes would incur excessive conduction loss.

Thermally, it delivers 4 °C/W R_θJC into a heatsink via the TO-220AC case tab, enabling sustained 8 A operation at T_J ≤ 150 °C with appropriate thermal design. Reverse leakage is specified at 100 µA (25 °C) and 5 mA (125 °C), supporting stable performance in elevated ambient environments.

Key Specifications

Pinout & Package

Package: TO-220AC - 3-lead, single-ended through-hole package with isolated metal tab (cathode-connected) for direct heatsink mounting; matte tin-plated leads compliant with J-STD-002 solderability.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SRA8150, VS-8EWH150 offers marginally lower forward voltage but higher reverse leakage, while MUR8150CT trades Schottky efficiency for silicon ruggedness and dual-diode integration - making SRA8150 optimal for thermally constrained, efficiency-critical 150 V rectification where leakage must stay ≤100 µA.

Availability

SRA8150 is available at Aetrix Electronics and suitable for server power supplies, industrial DC/DC converters, automotive body control modules, and LED driver power stages requiring stable component supply, consistent parametric performance, and long-term manufacturability.

Supply support for SRA8150 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 automotive markets since 1979.

The SRA8150 belongs to TSC's high-voltage Schottky rectifier product line, engineered for efficiency-critical secondary-side rectification in switching power supplies where low V_F, high surge tolerance, and thermal robustness are mandatory.

FAQ

What is the maximum junction temperature rating for the SRA8150?

The SRA8150 has a maximum junction temperature (T_J) rating of +150 °C, verified per absolute maximum ratings table in the official datasheet. This allows reliable operation in high-ambient environments such as enclosed industrial power supplies or automotive under-hood locations when paired with appropriate heatsinking. The SRA8150 maintains specified electrical parameters up to this limit, and its thermal resistance (R_θJC = 4 °C/W) enables accurate junction temperature prediction during design.

Is the SRA8150 pin-compatible with other parts in the SRA8xx family?

Yes, all SRA8xx devices including the SRA8150 use the identical TO-220AC package with standardized lead spacing, tab orientation, and cathode-marked polarity. Mechanical and solder footprint compatibility is guaranteed across the series, allowing voltage-rating upgrades (e.g., from SRA860 to SRA8150) without PCB layout changes - provided thermal and electrical system margins accommodate the higher V_RRM and associated V_F/I_R trade-offs.

Does the SRA8150 have AEC-Q101 qualification?

The base SRA8150 is not AEC-Q101 qualified; however, the SRA8150H variant is explicitly qualified per AEC-Q101 Rev D for automotive applications. The "H" suffix denotes qualification testing including stress tests for temperature cycling, humidity bias, and mechanical shock. Designers requiring automotive-grade reliability must specify SRA8150H - the SRA8150 itself is intended for industrial and commercial use only.

What is the forward voltage of the SRA8150 at 8 A and 100 °C junction temperature?

The datasheet specifies forward voltage only at 25 °C (V_F = 0.95 V @ 8 A). While no exact value is given at 100 °C, typical Schottky behavior shows V_F decreases ~2 mV/°C - implying ~0.75–0.80 V at 100 °C. For precise thermal design, engineers should reference Figure 4 (Typical Forward Characteristics) in the SRA8150 datasheet, which plots V_F vs. I_F across multiple temperatures, confirming the negative temperature coefficient of the SRA8150.

How does the guard ring in the SRA8150 improve reliability?

The guard ring in the SRA8150 is a diffused p-type region surrounding the active Schottky junction, designed to equalize electric field distribution at the silicon surface. This prevents premature edge breakdown under high reverse bias, especially during voltage transients or at elevated temperatures. As confirmed in the datasheet features, it directly enables stable 150 V V_RRM operation and improves long-term reliability in noisy or surge-prone power systems - a key differentiator versus non-guarded Schottky rectifiers in the same voltage class.