Taiwan Semiconductor Corporation SR002

Overview

SR002 from Taiwan Semiconductor is a 0.5A, 20V repetitive peak reverse voltage Schottky barrier rectifier in DO-204AL (DO-41) package, featuring 0.55V max forward voltage at 0.5A and 500µA max reverse leakage at 25°C, designed for high-efficiency DC-DC converters and compact AC/DC adapters.

For engineers reviewing the SR002 datasheet, SR002 pinout, SR002 application, or SR002 equivalent, key selection criteria include its AEC-Q101-qualified variant availability, junction-to-ambient thermal resistance of 50°C/W, surge capability of 30A (8.3ms), and DO-41 mechanical compatibility with standard through-hole PCB layouts.

Technical Context

This Schottky rectifier uses a single-die construction with guard ring protection to withstand transient overvoltage events. Its low VF and low IR enable reduced conduction losses in high-frequency switching topologies where thermal management is constrained.

The device operates across a junction temperature range of –55°C to +125°C (standard) or up to +150°C in AEC-Q101 variants, with junction capacitance of 110pF at 1MHz and 4V reverse bias - directly impacting high-speed switching noise and EMI behavior.

Key Specifications

Pinout & Package

DO-204AL (DO-41) axial-leaded package with cathode band marking; leads are pure tin plated, solderable per J-STD-002, and meet JESD 201 Class 2 whisker resistance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SB120 and VS-1EQH02-M3, SR002 offers the lowest thermal resistance (50°C/W) in its class and the most cost-effective AEC-Q101 option when ordered as SR002H, balancing surge robustness, leakage control, and manufacturability in high-volume consumer power supplies.

Availability

SR002 is available at Aetrix Electronics and suitable for switching mode power supplies, USB-C adapters, and industrial sensor power rails requiring stable component supply with consistent DO-41 mechanical fit and thermal performance.

Supply support for SR002 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 diodes, and MOSFETs for industrial and automotive markets.

The SR002 belongs to TSC's SR-series Schottky rectifier family, engineered for high-efficiency, low-profile AC/DC and DC/DC conversion where thermal density, surge immunity, and halogen-free compliance are system-level requirements.

FAQ

What is the maximum junction temperature rating for SR002?

The SR002 has a standard maximum junction temperature of +125°C. An AEC-Q101-qualified version (SR002H) extends this to +150°C. Both versions operate down to –55°C. Thermal design must account for R_θJA = 50°C/W and actual power dissipation to avoid exceeding TJ(max) under worst-case ambient conditions.

Does SR002 have a cathode band marking, and how is polarity identified?

Yes, SR002 uses a visible cathode band on the body to indicate polarity - the banded end is the cathode terminal. This matches industry-standard DO-41 orientation and ensures correct placement during manual or automated assembly. The band aligns with schematic symbol polarity and prevents reverse-bias failure during initial power-up.

Is SR002 suitable for automotive applications?

SR002 itself is not AEC-Q101 qualified, but the SR002H variant is. Only SR002H meets the full stress test requirements for automotive under-hood use. Standard SR002 may be used in non-safety-critical automotive accessories if validated per system-level requirements, but SR002H is required for BCM, lighting, or ADAS subsystems.

What is the forward voltage drop of SR002 at rated current?

The SR002 exhibits a maximum forward voltage drop of 0.55 V at 0.5 A and 25°C junction temperature. At elevated temperatures (e.g., 100°C), VF decreases slightly due to Schottky physics, typically reaching ~0.48 V - an important detail for low-voltage output regulation stability analysis.

How does SR002 compare to SR005 in terms of electrical performance?

SR002 and SR005 share identical package, current rating (0.5A), and surge capability (30A), but differ in VRRM (20V vs. 50V) and VF (0.55V vs. 0.70V max). SR002's lower VF reduces conduction loss in low-voltage outputs (<5V), while SR005's higher blocking voltage suits 12–24V systems where reverse stress exceeds 20V.