STMicroelectronics STTH1002CG

Overview

STTH1002CG from STMicroelectronics is a dual-center-tap ultrafast rectifier diode in D²PAK (TO-263) package, rated for 200 V repetitive peak reverse voltage and 8 A average forward current per diode at Tc = 135 °C. It delivers low conduction loss (VF typ. 0.78 V @ 5 A, 150 °C), ultrafast recovery (trr typ. 20 ns), and high junction temperature capability (Tj max = 175 °C), targeting high-frequency DC–DC converters and SMPS secondary-side rectification.

For engineers reviewing the STTH1002CG datasheet, STTH1002CG pinout, STTH1002CG application, or STTH1002CG equivalent, key selection criteria include dual-diode thermal coupling behavior, insulated case options (TO-220FPAB variant), junction-to-case thermal resistance (5.0 °C/W per device), and ECOPACK®2 compliance for industrial power supply designs.

Technical Context

This dual-center-tap rectifier integrates two independent ultrafast switching diodes in a single monolithic die, sharing a common cathode connection. Its design targets synchronous rectification replacement in low-voltage, high-current outputs where fast trr and low VF reduce switching losses and improve efficiency above 100 kHz.

The device operates with low leakage (IR ≤ 40 µA @ 125 °C, VR = VRRM) and exhibits stable dynamic performance across temperature: trr increases only ~1.5× from 25 °C to 125 °C under identical test conditions (IF = 1 A, dIF/dt = 100 A/µs), enabling predictable timing in resonant topologies.

Key Specifications

Pinout & Package

STTH1002CG is packaged in D²PAK (TO-263), a surface-mount power package with exposed thermal pad on the underside and three leads: two anodes (A1, A2) and one common cathode (K). The package provides mechanical robustness, enhanced thermal transfer via soldered thermal pad, and compatibility with automated reflow assembly.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH1002CT and STTH1002CFP, the STTH1002CG offers superior thermal performance in SMT layouts due to its D²PAK thermal pad, while maintaining identical electrical specs-making it optimal for high-power-density, automated manufacturing environments.

Availability

STTH1002CG is available at Aetrix Electronics and suitable for server power supplies, industrial DC–DC converters, and solar microinverters requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.

Supply support for STTH1002CG 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing analog, power, MCU, and sensor solutions for automotive, industrial, and consumer markets.

STTH1002CG belongs to ST's high-efficiency ultrafast diode product line, engineered specifically for high-frequency switch-mode power conversion where low VF, fast trr, and thermal reliability are critical in space-constrained designs.

FAQ

What is the maximum continuous forward current per diode at 100 °C case temperature?

At Tc = 100 °C, the STTH1002CG supports 8 A average forward current per diode (IF(AV) = 8 A), as specified in Table 2 for Tc = 135 °C derated linearly. This is confirmed by the IF(AV) vs. Tc curve in Figure 1, showing 8 A remains valid down to ~110 °C; at 100 °C, it is conservatively rated at 8.5 A per diode with appropriate thermal design.

Does STTH1002CG have a common cathode or common anode configuration?

STTH1002CG uses a dual-center-tap configuration with two independent anodes (A1, A2) and one shared cathode (K), as shown in the device schematic on page 1 of the datasheet. This arrangement is optimized for center-tapped transformer secondary rectification and eliminates need for external cathode tying.

Can STTH1002CG be used in avalanche mode?

No. STTH1002CG is not rated for repetitive avalanche operation. Its absolute maximum rating VRRM = 200 V defines the peak reverse voltage it can block continuously; exceeding this risks irreversible junction damage. It must be used within reverse voltage limits defined in Table 2, with appropriate snubbing for inductive turn-off transients.

Is the D²PAK package of STTH1002CG lead-free and RoHS compliant?

Yes. STTH1002CG is manufactured in ECOPACK®2-compliant packaging, which meets RoHS Directive 2011/65/EU, is halogen-free, and uses lead-free terminations. This is explicitly stated in the "Features" section and confirmed in Table 11 (Ordering Information) and the ECOPACK® footnote on page 6 of the datasheet.