Taiwan Semiconductor Corporation SRT19 R0G

Overview

SRT19 R0G from Taiwan Semiconductor is a 1 A, 90 V repetitive peak reverse voltage Schottky barrier rectifier in TS-1 package, featuring 0.80 V forward voltage at 1 A and 25 °C, 28 pF junction capacitance at 1 MHz/4 V, and 100 µA reverse leakage at rated VR and 25 °C - used in compact DC-DC converters requiring low-loss rectification.

For engineers reviewing the SRT19 R0G datasheet, SRT19 R0G pinout, SRT19 R0G application, or SRT19 R0G equivalent, key selection criteria include its 90 V VRRM rating, 25 A surge capability, AEC-Q101 qualification (via R0G suffix), thermal resistance of 50 °C/W, and TS-1 leaded package compatibility with J-STD-002 soldering standards.

Technical Context

The SRT19 R0G implements a single-die Schottky junction optimized for high-efficiency, medium-voltage rectification in switching power stages. Its guard ring structure provides overvoltage protection, while pure tin-plated leads ensure reliable solderability per J-STD-002 and whisker resistance per JESD 201 Class 2.

Designed for operation up to 150 °C junction temperature, it delivers stable performance under transient surge conditions (8.3 ms half-sine, 25 A) and maintains low reverse leakage (≤2 mA at 125 °C), supporting thermally constrained industrial and automotive power supplies.

Key Specifications

Pinout & Package

TS-1 package: molded plastic case with axial leads, cathode indicated by band, UL 94V-0 rated compound, 0.200 g typical weight, polarity-marked, RoHS and halogen-free compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-1EQH09-M3/45 and SB190, the SRT19 R0G uniquely combines AEC-Q101 qualification, TS-1 through-hole compatibility, and 28 pF capacitance - making it optimal for thermally constrained, automotive-qualified, manually assembled or wave-soldered power stages.

Availability

SRT19 R0G is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC power supplies, and USB-C PD auxiliary rails requiring stable component supply across extended lifecycle programs.

Supply support for SRT19 R0G 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 industrial, automotive, and consumer markets since 1979.

The SRT19 R0G belongs to TSC's AEC-Q101-qualified Schottky rectifier family targeting high-reliability, medium-voltage DC-DC conversion in space- and thermal-constrained environments.

FAQ

What is the maximum junction temperature rating for the SRT19 R0G?

The SRT19 R0G has a maximum junction temperature (TJ) rating of +150 °C, validated per AEC-Q101 stress testing. This allows operation in sealed enclosures or high-ambient environments where thermal management is limited. The SRT19 R0G must be derated above 25 °C ambient per the published forward current derating curve to maintain reliability within this limit.

Does the SRT19 R0G meet automotive qualification standards?

Yes, the SRT19 R0G is AEC-Q101 qualified, as confirmed by the "R0G" suffix in its ordering code. This qualification covers temperature cycling, high-temperature reverse bias (HTRB), and electrostatic discharge (ESD) testing per automotive reliability requirements. The SRT19 R0G is suitable for use in automotive body electronics, infotainment power supplies, and ADAS subsystems.

What does the "R0G" suffix indicate in SRT19 R0G?

The "R0G" suffix in SRT19 R0G denotes AEC-Q101 qualification (R), green/halogen-free packaging (G), and standard TS-1 packaging (0). It distinguishes this variant from non-automotive versions like SRT19 and confirms compliance with IEC 61249-2-21 halogen-free requirements. The SRT19 R0G is fully traceable and manufactured under automotive-grade process controls.

How does the junction capacitance of SRT19 R0G affect high-frequency design?

The SRT19 R0G exhibits 28 pF junction capacitance at 1 MHz and 4 V reverse bias, enabling clean switching transitions and reduced EMI in DC-DC converters operating above 300 kHz. This low CJ value minimizes capacitive coupling into gate drive nodes and improves efficiency compared to higher-capacitance alternatives. In layout, the SRT19 R0G benefits from short, symmetric traces to preserve its high-frequency advantage.

Is the SRT19 R0G compatible with lead-free reflow soldering processes?

Yes, the SRT19 R0G features pure tin-plated leads qualified per J-STD-002 for solderability and meets JESD 201 Class 2 whisker resistance requirements. It supports standard lead-free reflow profiles (peak ≤ 260 °C) and is compatible with wave soldering. The TS-1 package's UL 94V-0 molding compound ensures flame resistance during all approved soldering methods. The SRT19 R0G is fully RoHS and halogen-free compliant.