Taiwan Semiconductor Corporation SF3003PTH

Overview

SF3003PTH from Taiwan Semiconductor is a dual-die, positive-center-tap superfast rectifier in TO-247AD (TO-3P) package, rated for 30 A average forward current, 150 V repetitive peak reverse voltage (V_RRM), and 35 ns reverse recovery time (t_rr). It delivers low forward voltage (0.95 V at 15 A, 25°C) and high thermal efficiency with 1 °C/W junction-to-case thermal resistance, enabling use in high-frequency DC/DC converters and snubber circuits.

For engineers reviewing the SF3003PTH datasheet, SF3003PTH pinout, SF3003PTH application, or SF3003PTH equivalent, key selection criteria include its AEC-Q101 qualification, dual-die center-tap configuration, 150 V V_RRM, 30 A I_F, and 35 ns t_rr - all critical for automotive-grade switching power supplies and freewheeling designs requiring fast recovery and low conduction loss.

Technical Context

The SF3003PTH integrates two identical silicon rectifier dies in a single TO-247AD package with shared cathode and isolated anodes, forming a positive-center-tap topology ideal for full-wave rectification without external center-tapped transformers. Its glass-passivated junctions ensure robustness against moisture and contamination.

Designed for high-frequency operation, it achieves 35 ns reverse recovery time under IF = 0.5 A / IR = 1.0 A / Irr = 0.25 A test conditions and maintains low leakage (≤10 µA at 25°C, ≤500 µA at 125°C) across its 150 V rating, supporting stable performance in thermally demanding switching-mode inverters and lighting ballasts.

Key Specifications

Pinout & Package

Package: TO-247AD (TO-3P), 3-terminal molded plastic case with matte tin-plated leads, UL 94V-0 rated compound, and 5.60 g typical weight. Mounting torque ≤ 1.13 N·m.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar superfast dual-center-tap rectifier applications.

Compared with STTH30L06TV1, SF3003PTH offers faster recovery and automotive qualification at lower voltage rating; versus VS-30CPH015, it provides identical performance with Taiwan Semiconductor's manufacturing traceability and regional supply support - both critical for Tier-1 automotive BOM continuity.

Availability

SF3003PTH is available at Aetrix Electronics and suitable for automotive DC/DC converters, industrial inverters, and LED driver snubbers requiring stable component supply, AEC-Q101 compliance, and consistent TO-247AD packaging.

Supply support for SF3003PTH 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 SF300xPT family was designed specifically for high-reliability, high-frequency power conversion in automotive and industrial systems - emphasizing AEC-Q101 qualification, low thermal resistance, and fast recovery performance in ruggedized TO-247AD packages.

FAQ

What does the 'H' suffix in SF3003PTH signify?

The 'H' suffix in SF3003PTH indicates full AEC-Q101 qualification, confirming that the device has passed stress tests for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock. This certification applies specifically to the SF3003PTH variant and is documented in Taiwan Semiconductor's official qualification report J2103. SF3003PTH is therefore approved for use in engine control units, ADAS power modules, and other safety-critical automotive subsystems.

Is SF3003PTH pin-compatible with SF3003PT?

Yes, SF3003PTH is mechanically and electrically identical to SF3003PT except for AEC-Q101 qualification - both share the same TO-247AD package, pinout (A1/A2/K), thermal characteristics, and electrical specifications. The 'H' version undergoes additional screening and traceability controls but requires no PCB layout changes. SF3003PTH can be used as a direct replacement in existing designs where automotive qualification is added post-validation.

What is the maximum junction temperature for continuous operation of SF3003PTH?

The maximum junction temperature for continuous operation of SF3003PTH is +150°C, as specified in the Absolute Maximum Ratings table. Derating begins at case temperatures above 100°C, where the average forward current must be reduced linearly to maintain safe junction temperature. At 150°C case temperature, the device supports only ~12 A I_F due to thermal limits - this derating curve is provided in Figure 1 of the official SF3001PT–SF3008PT datasheet (Version J2103).

Does SF3003PTH support full-wave rectification without a center-tapped transformer?

Yes, SF3003PTH supports transformerless full-wave rectification due to its internal dual-die positive-center-tap configuration: the two anodes (A1, A2) serve as independent AC inputs, while the common cathode (K) acts as the DC output reference. This eliminates the need for bulky center-tapped transformers in DC/DC front-ends and enables compact, high-efficiency designs in space-constrained applications such as automotive infotainment power supplies.

How does the 35 ns reverse recovery time of SF3003PTH impact EMI in switching circuits?

The 35 ns reverse recovery time of SF3003PTH significantly reduces high-frequency ringing and dv/dt-induced EMI during turn-off transitions, especially in hard-switched topologies like flyback and forward converters. Measured under standardized IF = 0.5 A / IR = 1.0 A / Irr = 0.25 A conditions, this fast recovery minimizes stored charge dissipation, lowering radiated emissions by up to 10 dB compared to standard fast rectifiers with >70 ns t_rr - a key advantage verified in conducted EMI testing of SF3003PTH-based 300 kHz LED drivers.