Taiwan Semiconductor Corporation SFS1603G

Overview

SFS1603G from Taiwan Semiconductor is a 16A, 150V repetitive peak reverse voltage super fast recovery surface-mount rectifier in TO-263AB (D2PAK) package, featuring 35ns reverse recovery time, 0.975V forward voltage at 8A/25°C, and 2.5°C/W junction-to-case thermal resistance. It serves as a primary output rectifier in high-frequency DC-DC converters.

For engineers reviewing the SFS1603G datasheet, SFS1603G pinout, SFS1603G application, or SFS1603G equivalent, key selection criteria include V_RRM = 150V, I_F = 16A, t_rr = 35ns, R_θJC = 2.5°C/W, and TO-263AB mechanical compatibility with high-power switching topologies requiring low-loss freewheeling paths.

Technical Context

The SFS1603G integrates dual die configuration in a single TO-263AB package, enabling independent cathode-anode conduction paths optimized for synchronous or complementary switching stages. Its 35ns reverse recovery time and 80pF junction capacitance per diode support operation up to several hundred kHz in hard-switched SMPS designs.

Rated for 125A non-repetitive surge current (8.3ms half-sine), the device sustains transient overloads typical in PFC front-ends and motor drive snubbers. The 150°C maximum junction temperature and J-STD-020 Level 1 moisture sensitivity allow standard reflow assembly without baking.

Key Specifications

Pinout & Package

TO-263AB (D2PAK) package with three terminals: Anode 1, Cathode (common), Anode 2 - configured as dual independent diodes sharing a common cathode terminal. Matte tin-plated leads meet J-STD-002 solderability; polarity marked on top surface.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-16CTH02-M3/45 and MUR1620CTG, the SFS1603G offers optimal balance of 150V rating, 35ns recovery, and 2.5°C/W thermal resistance in surface-mount form-making it preferred for space-constrained, high-efficiency 12–48V DC-DC modules where thermal management and layout density are critical.

Availability

SFS1603G is available at Aetrix Electronics and suitable for DC-DC converter output rectification, switching mode inverter freewheeling, and industrial SMPS input stage applications requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.

Supply support for SFS1603G 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 devices, and MOSFETs since 1979.

The SFS1603G belongs to TSC's Super Fast Surface Mount Rectifier product line, engineered specifically for high-frequency switching power supplies demanding low V_F, fast t_rr, and robust surge capability in compact surface-mount packages.

FAQ

What is the maximum repetitive peak reverse voltage (V_RRM) of the SFS1603G?

The SFS1603G has a V_RRM of 150 V, as confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version O2103). This value is specific to the SFS1603G variant within the SFS1601G–SFS1608G family and is not interchangeable with other members such as SFS1604G (200V) or SFS1602G (100V). Designers must verify that system reverse voltage stress remains below 150V with appropriate safety margin.

Does the SFS1603G have a common-cathode or common-anode configuration?

The SFS1603G uses a common-cathode dual-diode configuration in TO-263AB (D2PAK) package, with separate anode terminals (Anode 1 and Anode 2) and one shared cathode terminal. This is explicitly stated in the Mechanical Data section and confirmed by the marking diagram and pad layout documentation. The configuration supports independent control of two rectification paths-ideal for dual-output or interleaved converter topologies.

What is the forward voltage (V_F) of the SFS1603G at rated current?

The SFS1603G exhibits a maximum forward voltage of 0.975 V per diode at I_F = 8 A and T_J = 25°C, as specified in the Electrical Specifications table. This value applies to both diodes in the dual-die structure. At full 16A average current, V_F rises due to self-heating; actual operating V_F must be interpolated using the Typical Forward Characteristics curve (Fig.4) with junction temperature estimation.

Is the SFS1603G RoHS and halogen-free compliant?

Yes, the SFS1603G is RoHS compliant and halogen-free in accordance with IEC 61249-2-21, as stated in the FEATURES section of the official datasheet. The "G" suffix in the part number denotes green (halogen-free) molding compound, and the device meets UL 94V-0 flammability requirements. These compliance attributes are verified per Taiwan Semiconductor's material declarations and apply to all units shipped under this orderable code.

What is the junction-to-case thermal resistance (R_θJC) of the SFS1603G?

The SFS1603G has a typical junction-to-case thermal resistance of 2.5°C/W, as published in the Thermal Performance section of the datasheet. This value is measured under standardized conditions with proper thermal interface and applies to the entire dual-die structure in TO-263AB package. It enables accurate thermal modeling when the case is mounted to a heatsink or thermally enhanced PCB plane, supporting reliable 16A operation at T_C ≤ 110°C.