Taiwan Semiconductor Corporation SR103HB0G

Overview

SR103HB0G from Taiwan Semiconductor is a 1A, 30V AEC-Q101-qualified Schottky barrier rectifier in DO-204AL (DO-41) package, featuring 0.55V forward voltage at 1A/25°C, 30A surge capability, and guard ring overvoltage protection-used in automotive-grade DC-DC converters and industrial adapters.

For engineers reviewing the SR103HB0G datasheet, SR103HB0G pinout, SR103HB0G application, or SR103HB0G equivalent, key selection criteria include its AEC-Q101 qualification, 30V V_RRM, 0.55V V_F at rated current, 30A I_FSM, and DO-41 thermal performance with R_θJA = 90°C/W.

Technical Context

This discrete Schottky diode operates as a unidirectional power rectifier with single-die construction and cathode-band polarity marking. Its guard ring structure enhances ruggedness against transient overvoltage, while pure tin-plated leads meet J-STD-002 solderability and JESD201 Class 2 whisker resistance requirements.

The device supports continuous operation up to +150°C junction temperature and exhibits low reverse leakage (≤500 µA at 25°C, ≤10 mA at 100°C) across its 30V rating-enabling high-efficiency switching in compact 1A power rails where thermal management and reliability under surge stress are critical.

Key Specifications

Pinout & Package

DO-204AL (DO-41) axial-leaded package with cathode indicated by band; no internal terminals-two-terminal device: anode and cathode.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-1EQH03-M3/5BT and SB130, SR103HB0G uniquely combines AEC-Q101 qualification, 30A surge rating, and 0.55V forward drop in DO-41-making it optimal for automotive and industrial power supplies demanding both reliability and thermal headroom.

Availability

SR103HB0G is available at Aetrix Electronics and suitable for automotive DC-DC converters, industrial adapters, and telecom power modules requiring stable component supply with AEC-Q101 compliance and long-lifecycle support.

Supply support for SR103HB0G 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 automotive, industrial, and consumer markets since 1979.

The SR102–SR115 series was designed specifically for high-reliability, medium-current Schottky rectification in space-constrained power supplies-emphasizing AEC-Q101 qualification, low V_F, and robust surge handling in standard DO-41 packaging.

FAQ

What is the peak repetitive reverse voltage rating for SR103HB0G?

The SR103HB0G has a peak repetitive reverse voltage (V_RRM) rating of 30 V. This value is confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version G2104), and defines the maximum reverse-biased voltage the device can block continuously without breakdown under normal operating conditions.

Is SR103HB0G qualified to AEC-Q101 standards?

Yes, SR103HB0G is explicitly AEC-Q101 qualified, as indicated by the "H" suffix in the ordering code and confirmed in the FEATURES section of the Taiwan Semiconductor datasheet. This qualification covers stress testing for temperature cycling, humidity, mechanical shock, and other automotive-grade reliability requirements.

What is the forward voltage drop of SR103HB0G at 1A and 25°C?

The forward voltage drop (V_F) of SR103HB0G is 0.55 V at I_F = 1 A and T_J = 25°C, per the Electrical Specifications table in the official datasheet. This value is measured under pulsed conditions (PW = 0.3 ms) and represents typical conduction loss in low-voltage, high-efficiency rectification applications.

What package type does SR103HB0G use, and what are its key mechanical attributes?

SR103HB0G uses the DO-204AL (DO-41) axial-leaded package. Key mechanical attributes include UL 94V-0 molding compound, pure tin-plated leads compliant with J-STD-002, JESD201 Class 2 whisker resistance, and cathode polarity marked by a visible band-verified in the MECHANICAL DATA section of the Taiwan Semiconductor documentation.

Does SR103HB0G have a specified junction-to-ambient thermal resistance?

Yes, SR103HB0G has a junction-to-ambient thermal resistance (R_θJA) of 90°C/W, as published in the THERMAL PERFORMANCE section of the datasheet. This value applies to the device mounted on a standard FR-4 PCB with minimum copper pad area and is essential for estimating temperature rise under steady-state 1A conduction.