Taiwan Semiconductor Corporation SRF2050

Overview

SRF2050 from Taiwan Semiconductor is a 20A, 50V repetitive peak reverse voltage Schottky barrier rectifier in ITO-220AB package, featuring 0.70 V typical forward voltage at 10 A and 25°C, 200 A surge capability, and junction temperature rating up to +150°C. It serves as a high-efficiency output rectifier in DC-DC converters and AC-DC adapters.

For engineers reviewing the SRF2050 datasheet, SRF2050 pinout, SRF2050 application, or SRF2050 equivalent, key selection criteria include its 50 V VRRM rating, dual-die thermal performance (R_θJC = 1.5 °C/W), low IR of 500 µA at 25°C, and AEC-Q101 qualification option for automotive-grade reliability validation.

Technical Context

The SRF2050 employs a dual-die Schottky structure optimized for low conduction loss and fast switching in high-frequency power conversion. Its 50 V VRRM and 0.70 V VF at 10 A enable efficient operation in 12–48 V output SMPS stages.

Thermal design is supported by a 1.5 °C/W junction-to-case resistance and 150°C maximum junction temperature, allowing sustained 20 A DC current with appropriate heatsinking. Reverse leakage remains ≤500 µA at 25°C and ≤10 mA at 125°C under rated VR.

Key Specifications

Pinout & Package

Package: ITO-220AB - Insulated through-hole outline with isolated metal tab, UL 94V-0 molding compound, matte tin-plated leads, 1.70 g mass, and 0.56 N·m maximum mounting torque.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-20BQ050 and MBR2050CT, the SRF2050 offers superior thermal resistance (1.5 °C/W), cathode-isolated tab for flexible grounding, and lower leakage-making it optimal for thermally constrained, high-reliability, and low-standby-power applications.

Availability

SRF2050 is available at Aetrix Electronics and suitable for server power supplies, automotive DC-DC converters, and industrial PLC power modules requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for SRF2050 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 Company (TSC) is a vertically integrated analog and power semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in rectifiers, TVS devices, and MOSFETs for industrial and automotive markets.

The SRF20xx series was developed to deliver high-current Schottky rectification with enhanced thermal robustness and AEC-Q101 readiness for next-generation power conversion in compact, high-efficiency systems.

FAQ

What is the maximum junction temperature rating for the SRF2050?

SRF2050 has a maximum junction temperature (T_J) rating of +150°C, validated across its full operating current range. This allows reliable operation in high-ambient environments such as automotive engine compartments or enclosed industrial enclosures. Derating curves in the datasheet specify allowable current reduction above 100°C ambient, ensuring thermal safety margins are maintained in SRF2050-based designs.

Is the SRF2050 pin-compatible with other parts in the SRF20xx family?

Yes, all SRF20xx parts-including SRF2050-share identical ITO-220AB mechanical dimensions, lead frame geometry, and pinout (anode, cathode, isolated tab). Voltage variants (e.g., SRF2030, SRF2060) differ only in internal die construction and electrical ratings-not physical layout-enabling drop-in replacement during design iteration or voltage optimization.

Does the SRF2050 meet automotive qualification standards?

The base SRF2050 is not AEC-Q101 qualified, but its variant SRF2050H is fully AEC-Q101 certified per J2105 revision. The H-suffix version undergoes extended stress testing including HTOL, TC, and UHAST, and carries the same electrical specs and ITO-220AB package. Designers targeting automotive applications should specify SRF2050H to ensure compliance.

What is the forward voltage specification for the SRF2050 at elevated temperature?

SRF2050 exhibits a typical forward voltage of 0.70 V at 10 A and 25°C. At 100°C junction temperature, VF increases to approximately 0.62 V due to the negative temperature coefficient of Schottky diodes. This behavior is confirmed in Figure 4 (Typical Forward Characteristics) of the datasheet and supports improved conduction efficiency at operating temperature in real-world SRF2050 deployments.

How is thermal performance characterized for the SRF2050?

SRF2050's thermal performance is defined by a junction-to-case thermal resistance (R_θJC) of 1.5 °C/W, measured under standardized JEDEC conditions. This value enables accurate heatsink sizing using standard thermal models. Transient thermal impedance data (Figure 6) further supports pulsed-power analysis, confirming SRF2050's ability to handle short-duration surges without exceeding TJ max under realistic PCB-mounting conditions.