Taiwan Semiconductor Corporation SRT13

Overview

SRT13 from Taiwan Semiconductor is a 1A, 30V repetitive peak reverse voltage Schottky barrier rectifier in TS-1 package, featuring low forward voltage drop (0.55V @ 1A, 25°C), high surge current capability (25A), and AEC-Q101 qualification option. It serves as a primary output rectifier in compact DC/DC converters for automotive infotainment power supplies.

For engineers reviewing the SRT13 datasheet, SRT13 pinout, SRT13 application, or SRT13 equivalent, key selection criteria include its 30V V_RRM, 0.55V forward voltage at rated current, 50°C/W junction-to-ambient thermal resistance, 110pF junction capacitance, and TS-1 package compatibility with high-density board layouts.

Technical Context

The SRT13 employs a single-die Schottky structure optimized for low conduction loss in medium-voltage switching applications. Its guard ring design provides overvoltage protection, while pure tin-plated leads ensure J-STD-002 solderability and JESD 201 Class 2 whisker resistance.

Thermal performance is defined by R_θJA = 50°C/W under standard JEDEC test conditions. The device operates across -55°C to +125°C junction temperature range, with reverse leakage limited to 500µA at 25°C and 10mA at 100°C under rated reverse voltage.

Key Specifications

Pinout & Package

TS-1 package: surface-mount, single-anode/single-cathode configuration with cathode band marking; 0.200g mass; UL 94V-0 molding compound; lead-free, halogen-free construction.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-1EQH03-M3 and SB130, the SRT13 delivers balanced trade-offs: superior thermal resistance (50°C/W vs. 65°C/W typical for DO-214AC), AEC-Q101 availability, and TS-1 surface-mount compatibility-making it optimal for space-constrained, thermally demanding automotive and industrial DC/DC designs.

Availability

SRT13 is available at Aetrix Electronics and suitable for automotive infotainment power supplies, USB-C PD adapters, and industrial IoT sensor node DC/DC converters requiring stable component supply and long-term production continuity.

Supply support for SRT13 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 devices, and MOSFETs since 1979.

The SRT13 belongs to TSC's AEC-Q101-qualified Schottky rectifier product line, engineered for high-efficiency, high-reliability DC/DC conversion in automotive and industrial power systems where thermal robustness and surge resilience are critical.

FAQ

What is the maximum junction temperature rating for the SRT13?

The SRT13 has a maximum junction temperature (T_J) rating of +125°C, validated across its full operating range from -55°C to +125°C. This rating applies to all standard SRT13 variants and is specified in the Absolute Maximum Ratings table of the I2104 datasheet revision. Operation beyond this limit risks irreversible parametric shift or bond-wire failure. Derating curves confirm 1A continuous current is sustainable up to 75°C ambient without heatsinking.

Does the SRT13 have AEC-Q101 qualification?

The base SRT13 is not AEC-Q101 qualified, but the SRT13H variant-identifiable by the "H" suffix in the ordering code-is fully AEC-Q101 qualified per stress test conditions including temperature cycling, high-temperature operating life, and unbiased highly accelerated stress testing. The SRT13H shares identical electrical parameters and TS-1 packaging with the standard SRT13, differing only in qualification status and traceability documentation.

What is the forward voltage of the SRT13 at 1A and 100°C junction temperature?

The SRT13 forward voltage at 1A and 100°C junction temperature is not explicitly tabulated, but the datasheet specifies V_F = 0.55V at 25°C and shows a typical forward characteristic curve (Fig.4) indicating ~0.48V at 100°C. This reduction occurs due to negative temperature coefficient of Schottky diodes. Designers should use the 0.55V value for worst-case room-temperature loss calculation and verify thermal margin using the derating curve (Fig.1).

Can the SRT13 replace the SRT12 in an existing design?

Yes, the SRT13 can directly replace the SRT12 in most designs because both share identical package (TS-1), pinout, forward current rating (1A), surge rating (25A), and thermal resistance (50°C/W). The only difference is V_RRM: SRT12 is rated for 20V, SRT13 for 30V. Substituting SRT13 provides 10V additional reverse margin without layout or thermal changes, making it a safe upgrade where higher voltage transients are anticipated.

What is the reverse leakage current of the SRT13 at 125°C junction temperature?

The SRT13 reverse leakage current (I_R) at 125°C junction temperature and rated reverse voltage is not specified in the datasheet. However, the datasheet provides values at 25°C (≤500µA), 100°C (≤10mA), and 125°C only for SRT19–SRT115 variants (≤2mA). For SRT13, extrapolation from the reverse characteristics curve (Fig.3) indicates I_R ≈ 15–20mA at 125°C and 30V, which must be accounted for in high-temperature hold-up capacitor sizing.