Taiwan Semiconductor Corporation SR209 R0G

Overview

SR209 R0G from Taiwan Semiconductor is a 2 A, 90 V repetitive peak reverse voltage Schottky barrier rectifier in DO-204AC (DO-15) package, featuring 0.85 V forward voltage at 2 A and 25°C, 100 µA reverse current at 25°C, and 2 mA at 125°C, used in switching mode power supplies and DC-DC converters.

For engineers reviewing the SR209 R0G datasheet, SR209 R0G pinout, SR209 R0G application, or SR209 R0G equivalent, this page delivers verified electrical parameters, thermal performance data, AEC-Q101 qualification status, and direct alternative part comparisons for reliable power rectification design-in.

Technical Context

This Schottky rectifier operates with a single die configuration and uses a guard ring structure to enhance overvoltage robustness. Its 10,000 V/µs critical rate of rise of off-state voltage supports fast-switching topologies without spurious turn-on.

Thermal resistance values are R_θJL = 21.7°C/W and R_θJA = 75.0°C/W, enabling stable operation up to 150°C junction temperature. The device is rated for 50 A non-repetitive surge current under 8.3 ms half-sine wave conditions.

Key Specifications

Pinout & Package

Package: DO-204AC (DO-15), axial-leaded, epoxy-molded case with cathode band marking polarity. Leads are pure tin plated and 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-2EY90 and SB290, SR209 R0G offers superior thermal capability (150°C vs. 125°C), lower leakage (100 µA vs. ≥150 µA), and optional AEC-Q101 qualification-making it optimal for thermally constrained or automotive-adjacent designs.

Availability

SR209 R0G is available at Aetrix Electronics and suitable for switching mode power supplies, USB-C PD adapters, and industrial DC-DC modules requiring stable component supply and consistent parametric performance across production lots.

Supply support for SR209 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 semiconductor manufacturer specializing in discrete power devices, including rectifiers, TVS diodes, and MOSFETs, with global distribution and AEC-Q101 validation capability.

The SR202–SR220 series was designed specifically for high-efficiency, medium-current AC/DC and DC/DC power conversion in space-constrained industrial and consumer applications, emphasizing low V_F, robust surge handling, and halogen-free compliance.

FAQ

What is the maximum junction temperature rating for SR209 R0G?

The SR209 R0G has a maximum junction temperature (T_J) rating of +150°C, confirmed in the Absolute Maximum Ratings table. This allows operation in high-ambient environments such as enclosed power supplies or industrial control cabinets where thermal management is limited. The SR209 R0G maintains specified electrical performance up to this limit when derated per the Forward Current Derating Curve.

Does SR209 R0G have AEC-Q101 qualification?

The base SR209 R0G is not AEC-Q101 qualified; however, the SR209H variant (same electrical specs, marked "H") is explicitly qualified per AEC-Q101. The "R0G" suffix denotes green compound and tape-and-reel packaging, not qualification status. For automotive applications, specify SR209H instead of SR209 R0G to ensure compliance.

What is the forward voltage of SR209 R0G at 2 A and 100°C junction temperature?

The datasheet does not specify V_F at 100°C for SR209 R0G; only the 25°C value (0.85 V max) is provided. However, typical Schottky V_F decreases ~2 mV/°C, so extrapolation suggests ~0.75 V at 100°C. For design-critical applications, use the 25°C spec or consult Taiwan Semiconductor's SPICE model or application note AN-209 for thermal V_F curves. The SR209 R0G datasheet confirms V_F is measured at 25°C unless otherwise noted.

Is SR209 R0G compatible with lead-free reflow soldering processes?

Yes, SR209 R0G features pure tin-plated leads compliant with J-STD-002 for solderability and qualified for lead-free reflow profiles (peak temperature ≤ 260°C). The DO-204AC package meets JEDEC MS-001 standards for thermal endurance during reflow. No special pre-bake or moisture sensitivity level (MSL) handling is required-the SR209 R0G is rated MSL-1 per J-STD-020.

What is the reverse recovery time of SR209 R0G?

The SR209 R0G is a Schottky barrier rectifier and therefore has no reverse recovery time (t_rr). Unlike PN-junction diodes, Schottky devices operate via majority-carrier conduction and exhibit negligible stored charge, eliminating reverse recovery losses. This characteristic is inherent to the SR209 R0G's metal-semiconductor junction and is confirmed by its use in high-frequency SMPS where t_rr-related switching loss must be avoided.