Taiwan Semiconductor Corporation SR220

Overview

SR220 from Taiwan Semiconductor is a 2 A, 200 V Schottky barrier rectifier in DO-204AC (DO-15) package, featuring 0.95 V forward voltage at 2 A and 25°C, 2 mA reverse current at 125°C, 50 A surge capability, and AEC-Q101 qualification for automotive power supplies.

For engineers reviewing the SR220 datasheet, SR220 pinout, SR220 application, or SR220 equivalent, key selection criteria include its 200 V repetitive peak reverse voltage, low VF for high-efficiency DC/DC conversion, thermal resistance of 21.7°C/W (junction-to-lead), and cathode-band polarity marking in automotive-grade packaging.

Technical Context

The SR220 operates as a single-die, unidirectional Schottky rectifier optimized for high-frequency switching applications. Its 200 V V_RRM, 50 A I_FSM, and 10,000 V/µs dv/dt rating support robust operation in transient-prone power rails.

Thermally, it delivers R_θJL = 21.7°C/W and R_θJA = 75.0°C/W, enabling sustained 2 A conduction up to 125°C junction temperature (150°C storage). The device uses pure tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 2 whisker testing.

Key Specifications

Pinout & Package

Package: DO-204AC (DO-15), axial-leaded, epoxy-molded case meeting UL 94V-0. Cathode identified by band on body. Leads are pure tin-plated, solderable per J-STD-002.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-2EWH02-M3/54 and SB220-E3/54, the SR220 uniquely combines AEC-Q101 qualification, DO-15 through-hole compatibility, and 0.95 V VF-making it optimal for automotive and industrial designs needing proven reliability and manual/repair-friendly assembly.

Availability

SR220 is available at Aetrix Electronics and suitable for automotive ECUs, industrial SMPS, USB-C PD adapters, and LED drivers requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for SR220 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 devices, rectifiers, and protection components.

The SR220 belongs to TSC's SR2xx Schottky rectifier product line, engineered for high-efficiency, high-reliability power conversion in automotive and industrial applications where low VF, surge robustness, and AEC-Q101 compliance are critical.

FAQ

What is the maximum junction temperature rating for the SR220?

The SR220 has a maximum junction temperature (T_J) of +125°C under continuous operation, with storage temperature extending to +150°C. This rating is validated per the absolute maximum ratings table in the L2105 datasheet revision and supports deployment in under-hood automotive environments where ambient temperatures reach 105°C.

Is the SR220 pin-compatible with other parts in the SR2xx family?

Yes-the SR220 shares identical DO-204AC (DO-15) mechanical dimensions, lead spacing, and cathode-band polarity marking with all SR2xx variants (e.g., SR202–SR215). However, electrical parameters-including V_RRM, V_F, and I_R-are voltage-scaled per part number, so direct substitution requires verification of voltage and thermal margins in the target design.

Does the SR220 require a heatsink in 2 A continuous operation?

No external heatsink is required for the SR220 at 2 A continuous conduction if PCB copper area provides ≥10 cm² of 2 oz copper connected to both leads. With R_θJL = 21.7°C/W, junction temperature rise is ~43°C above lead temperature-well within the 125°C limit when leads are held ≤82°C via adequate copper thermal relief.

What does the "H" suffix mean in SR220H ordering code?

The "H" suffix in SR220H denotes AEC-Q101 qualification per the ordering information table in the L2105 datasheet. This version undergoes stress testing including HTOL, temperature cycling, and ESD per automotive reliability standards, distinguishing it from standard SR220 variants intended for commercial applications.

How is reverse leakage current specified for the SR220 at elevated temperature?

For the SR220, reverse current (I_R) is specified as ≤2 mA at rated 200 V reverse voltage and T_J = 125°C, per the Electrical Specifications table. At 25°C, I_R is ≤100 µA; at 100°C, it rises to ≤2 mA-enabling predictable thermal design in high-ambient environments without derating.