Taiwan Semiconductor Corporation SRAF1630

Overview

SRAF1630 from Taiwan Semiconductor is a 16A, 30V Schottky barrier rectifier in ITO-220AC package, featuring low forward voltage (0.55 V at 16 A, 25°C), high surge current capability (275 A), and AEC-Q101 qualification option. It serves as a primary output rectifier in high-efficiency DC/DC converters and industrial SMPS where low conduction loss and thermal robustness are critical.

For engineers reviewing the SRAF1630 datasheet, SRAF1630 pinout, SRAF1630 application, or SRAF1630 equivalent, key selection criteria include its 30 V repetitive peak reverse voltage, 4 °C/W junction-to-case thermal resistance, TJ = –55 to +150°C operating range, and UL Recognized status (E-326243) for safety-critical power designs.

Technical Context

The SRAF1630 is a single-die Schottky rectifier optimized for high-frequency switching topologies. Its 0.55 V forward voltage at 16 A and 25°C directly reduces conduction losses, while the 10,000 V/µs dv/dt rating supports stable operation in fast-switching converters with steep voltage transients.

Thermally, it delivers 4 °C/W junction-to-case resistance and operates up to +150°C junction temperature, enabling compact heatsink designs in space-constrained adapters and on-board DC/DC modules without derating below full 16 A average current at moderate case temperatures.

Key Specifications

Pinout & Package

Package: ITO-220AC - Insulated TO-220 variant with isolated metal tab (electrically floating), matte tin-plated leads compliant with J-STD-002, UL 94V-0 molding compound, 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-16CTH03-M3/45 and MBR1630CT, the SRAF1630 offers verified AEC-Q101 qualification, integrated guard ring for transient robustness, and a single-diode ITO-220AC footprint that simplifies layout and thermal design in both automotive and industrial power supplies.

Availability

SRAF1630 is available at Aetrix Electronics and suitable for switching mode power supplies, DC/DC converters, and adapter designs requiring stable component supply, consistent parametric performance across production lots, and long-term lifecycle support.

Supply support for SRAF1630 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 SRAF1630 belongs to TSC's AEC-Q101-qualified Schottky rectifier product line, engineered specifically for high-reliability, high-efficiency secondary-side rectification in automotive body electronics and ruggedized industrial power conversion.

FAQ

What is the maximum junction temperature rating for the SRAF1630?

The SRAF1630 has a maximum junction temperature (T_J) of +150°C, confirmed in the Absolute Maximum Ratings table. This extended rating allows operation in high-ambient environments such as enclosed industrial power modules or under-hood automotive applications without derating at full 16 A current, provided thermal resistance to ambient remains within design limits. The SRAF1630 maintains this rating across all standard and AEC-Q101-qualified versions.

Does the SRAF1630 have a guard ring structure, and what benefit does it provide?

Yes, the SRAF1630 incorporates a guard ring structure explicitly cited in its FEATURES list. This design mitigates edge breakdown under transient overvoltage conditions-such as load dump or inductive kickback-by distributing electric field stress away from the active junction periphery. As a result, the SRAF1630 sustains reliable blocking behavior at its rated 30 V V_RRM even during fast-rising voltage events, enhancing system-level robustness in unregulated or noisy power rails.

Is the SRAF1630 UL Recognized, and what is its file number?

Yes, the SRAF1630 is UL Recognized under File # E-326243, as stated in the FEATURES section. This recognition covers flammability (UL 94V-0), creepage/clearance distances, and long-term insulation integrity of the ITO-220AC package. It enables faster end-equipment safety certification for Class II AC/DC adapters, medical auxiliary supplies, and industrial power systems where regulatory compliance is mandatory.

What is the forward voltage of the SRAF1630 at 16 A and 25°C, and how is it measured?

The forward voltage (V_F) of the SRAF1630 is 0.55 V (typical) at 16 A and 25°C, per the Electrical Specifications table. It is measured using a pulse test with 0.3 ms pulse width to avoid self-heating effects. This low V_F directly reduces conduction losses in high-current DC/DC outputs, making the SRAF1630 especially effective in efficiency-critical applications like USB-C PD adapters and server VRMs.

How does the SRAF1630 differ from the SRAF1620 and SRAF1640 in terms of voltage rating and application scope?

The SRAF1630 is rated for 30 V V_RRM, positioning it between the 20 V SRAF1620 and 40 V SRAF1640. This makes the SRAF1630 ideal for 24 V-output SMPS and 28 V aerospace/industrial systems where 20 V is insufficient and 40 V introduces unnecessary capacitance and leakage trade-offs. Its 0.55 V V_F matches the SRAF1620/SRAF1640 group, ensuring consistent efficiency scaling across the family while optimizing voltage margin for specific bus architectures.