STMicroelectronics STPSC12H065D

Overview

STPSC12H065D from STMicroelectronics is a 650 V, 12 A average forward current silicon carbide Schottky diode in TO-220AC package, designed for high-efficiency PFC stages in AC/DC power supplies. It delivers negligible reverse recovery, temperature-independent switching, and 100 A non-repetitive surge capability at 25 °C, enabling robust operation in hard-switching boost converters.

For engineers reviewing the STPSC12H065D datasheet, STPSC12H065D pinout, STPSC12H065D application, or STPSC12H065D equivalent, key selection criteria include its 1.56 V typical forward voltage at 12 A/25 °C, 600 pF junction capacitance at 0 V, 1.4 °C/W max junction-to-case thermal resistance, and suitability for continuous conduction mode (CCM) PFC designs requiring low EMI and high thermal stability.

Technical Context

This SiC Schottky diode replaces conventional silicon fast recovery diodes in critical high-frequency, high-voltage rectification nodes. Its wide bandgap enables a 650 V blocking rating with zero minority-carrier storage, eliminating reverse recovery charge (Qrr ≈ 0) and associated switching losses.

The device operates up to 175 °C junction temperature with stable VF and IR characteristics - VF increases only to 1.98 V (typ.) at 150 °C/12 A, while IR remains ≤500 µA at 150 °C and VR = 640 V - ensuring predictable performance across industrial ambient conditions.

Key Specifications

Pinout & Package

TO-220AC package: single-ended, isolated tab (cathode), through-hole mounting, epoxy body compliant with UL94 V0. Recommended torque: 0.55 N·m.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-voltage SiC Schottky diode applications.

Compared with C3D10060A and SS12065, STPSC12H065D offers optimal balance of surge robustness (100 A IFSM), thermal performance (1.4 °C/W), and proven PFC-specific characterization - making it preferred for high-reliability, high-power-density CCM boost designs where transient immunity and thermal stability are critical.

Availability

STPSC12H065D is available at Aetrix Electronics and suitable for server power supplies, industrial motor drives, telecom rectifiers, and renewable energy inverters requiring stable component supply and long-term manufacturing continuity.

Supply support for STPSC12H065D 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 microcontrollers, power devices, sensors, and analog ICs for industrial, automotive, and consumer markets.

The STPSC series belongs to ST's silicon carbide power diode product line, engineered specifically for high-efficiency, high-reliability PFC and output rectification in demanding 650 V applications.

FAQ

Is STPSC12H065D suitable for use in discontinuous conduction mode (DCM) PFC?

Yes. Its zero reverse recovery and low junction capacitance make it highly effective in DCM PFC, where rapid turn-on/turn-off transitions dominate. The 600 pF Cj and negligible Qrr reduce switching losses and EMI generation compared to silicon alternatives, especially at high frequencies above 200 kHz.

What is the maximum recommended case temperature for continuous operation?

The datasheet specifies IF(AV) = 12 A at Tc = 130 °C with duty cycle δ = 0.5. For reliable long-term operation, ST recommends limiting case temperature to ≤130 °C under full-load conditions. Exceeding this requires derating current or improving heatsink thermal resistance to maintain Tj ≤175 °C.

Does STPSC12H065D require a gate driver or external control circuitry?

No. As a passive uncontrolled diode, STPSC12H065D conducts when anode voltage exceeds cathode voltage by >VF and blocks when reverse biased. It requires no gate drive, biasing, or control logic - only proper thermal management and PCB layout for high di/dt paths.

Can STPSC12H065D be paralleled for higher current handling?

Paralleling is not recommended without individual current-sharing resistors or matched thermal mounting. VF has a positive temperature coefficient, but manufacturing tolerances and thermal coupling variations can cause imbalance. For >12 A applications, ST recommends selecting a higher-rated part (e.g., STPSC20H065D) instead of paralleling.