Taiwan Semiconductor Corporation SRF1650

Overview

SRF1650 from Taiwan Semiconductor is a 16A, 50V repetitive peak reverse voltage Schottky barrier rectifier in ITO-220AB package, featuring 0.70V max forward voltage at 8A/25°C, 200A surge capability, and junction-to-case thermal resistance of 2.5°C/W. It serves as a high-efficiency output rectifier in DC-DC converters and industrial SMPS.

For engineers reviewing the SRF1650 datasheet, SRF1650 pinout, SRF1650 application, or SRF1650 equivalent, key selection criteria include VRRM=50V, IF=16A, VF≤0.70V, IFSM=200A, and thermal performance in high-power density power supplies requiring AEC-Q101-compliant alternatives.

Technical Context

The SRF1650 integrates dual Schottky dies in a single ITO-220AB thermally optimized package with matte tin-plated leads. Its guard ring structure provides overvoltage protection, and it meets JESD201 Class 2 whisker testing and UL 94V-0 flammability requirements.

Designed for continuous conduction mode operation up to TJ=125°C, the device delivers low conduction loss (VF ≤0.70V) and supports high-reliability applications where reverse leakage must remain ≤500µA at 25°C and ≤10mA at 100°C under rated VR.

Key Specifications

Pinout & Package

Package: ITO-220AB - Insulated TO-220 variant with internal isolation between collector (cathode) tab and leadframe; 1.70g mass; UL Recognized File #E-326243; RoHS and halogen-free compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SRF1650, VS-16CTH05-M3 offers lower VF but inferior thermal performance in surface-mount-limited layouts, while SB1650 trades tab isolation and thermal efficiency for lower unit cost and broader distribution-making SRF1650 optimal for thermally constrained, safety-critical, or automotive-grade designs.

Availability

SRF1650 is available at Aetrix Electronics and suitable for server power supplies, industrial DC-DC converters, automotive body control modules, and medical adapters requiring stable component supply and traceable sourcing.

Supply support for SRF1650 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 SRF16xx family was developed to deliver high-current Schottky rectification with enhanced thermal performance and reliability in ITO-220AB packaging for next-generation compact, high-efficiency power conversion systems.

FAQ

What is the maximum junction temperature rating for the SRF1650?

The SRF1650 has a maximum junction temperature (TJ max) of +125°C, validated across its full operating voltage range. This rating applies to continuous operation under specified thermal conditions and is critical for derating calculations in sealed or high-ambient-temperature environments. The SRF1650 datasheet specifies absolute maximum ratings at TA = 25°C unless otherwise noted, and thermal design must ensure junction temperature remains below 125°C under worst-case load and ambient conditions. SRF1650's 2.5°C/W RθJC enables precise thermal modeling when paired with measured case temperature.

Does the SRF1650 have AEC-Q101 qualification?

The base SRF1650 is not AEC-Q101 qualified; however, the SRF1650H variant is explicitly listed in the ordering information as AEC-Q101 qualified. This qualification covers stress testing including temperature cycling, humidity bias, and high-temperature operating life, making SRF1650H suitable for automotive under-hood applications such as body control modules and ADAS power supplies. Engineers selecting for automotive use must specify the "H" suffix to ensure compliance. SRF1650H shares identical electrical and thermal specifications with SRF1650 except for qualification status and marking code.

What is the forward voltage specification for the SRF1650 at 16A?

The SRF1650 datasheet specifies forward voltage only at IF = 8A (≤0.70V at TJ = 25°C); no guaranteed VF value is provided at 16A. However, typical forward characteristics curves (Figure 4) show VF ≈ 0.82V at 16A and 25°C, rising to ~0.95V at 100°C. Designers should use the 8A VF value for worst-case loss estimation and consult the curve data for higher-current interpolation. SRF1650's dual-die construction helps maintain lower VF versus single-die equivalents at elevated currents.

Is the ITO-220AB package of the SRF1650 electrically isolated?

Yes, the ITO-220AB package used by the SRF1650 features electrical isolation between the metal tab (cathode) and the leadframe. This isolation eliminates the need for insulating pads when mounting to a grounded heatsink-unlike standard TO-220AC packages. The isolation is achieved via molded compound and internal dielectric barriers, and is verified by UL Recognition File #E-326243. This feature simplifies thermal design in safety-critical applications like medical adapters and industrial SMPS where creepage/clearance requirements are stringent.

What is the reverse leakage current of the SRF1650 at 100°C?

At TJ = 100°C and rated VR = 50V, the SRF1650 exhibits a maximum reverse leakage current (IR) of 10 mA per diode, as confirmed in the Electrical Specifications table. This value is significantly higher than the 500 µA maximum at 25°C, reflecting expected thermal dependence of Schottky leakage. Designers must account for this increase in standby power loss and thermal runaway analysis-especially in high-temperature environments such as enclosed industrial enclosures or automotive under-hood locations. SRF1650's dual-die layout maintains consistent IR balance across both anodes.