STMicroelectronics STTH16L06CT

Overview

STTH16L06CT from STMicroelectronics is a dual ultrafast high-voltage rectifier diode in TO-220AB package, rated for 600 V repetitive peak reverse voltage and 10 A average forward current per diode (20 A total device), with typical forward voltage of 1.05 V at 150 °C and maximum reverse recovery time of 35 ns - used as discontinuous-mode PFC boost diode and output rectifier in industrial switching power supplies.

For engineers reviewing the STTH16L06CT datasheet, STTH16L06CT pinout, STTH16L06CT application, or STTH16L06CT equivalent, key selection criteria include ultrafast trr ≤35 ns, low thermal resistance Rth(j-c) = 2.5 °C/W per diode, 175 °C max junction temperature, and dual-diode configuration enabling interleaved or synchronous rectification topologies.

Technical Context

This dual common-cathode ultrafast rectifier uses ST's Turbo 2 silicon technology to achieve soft reverse recovery with IRM ≤6.5 A and Qrr <800 nC under 400 V/100 A/µs conditions. Its low conduction loss profile (P = 1.06 × IF(AV) + 0.036 × IF²(RMS)) supports high-efficiency operation in 50–500 kHz SMPS designs.

The device features two electrically isolated anodes (A1, A2) sharing one cathode (K), enabling independent control of each diode path. Thermal coupling between diodes is characterized by Rth(c) = 0.7 °C/W, allowing accurate junction temperature estimation when both diodes conduct simultaneously.

Key Specifications

Pinout & Package

STTH16L06CT is housed in a TO-220AB package with insulated tab, featuring three terminals: two anodes (A1, A2) and one shared cathode (K). The package provides low thermal resistance and mechanical robustness for through-hole mounting on PCBs with external heatsinking.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ultrafast high-voltage rectifier applications.

Compared with STTH16L06CT, STTH1606D lacks integrated dual-anode functionality requiring external interconnection, while IXYS MUR1660CT trades off 15 ns slower recovery and higher VF for broader distributor availability - making STTH16L06CT optimal for compact, high-efficiency, high-frequency PFC and dual-phase rectifier designs.

Availability

STTH16L06CT is available at Aetrix Electronics and suitable for industrial switching power supplies, PFC boost converters, uninterruptible power systems, and motor drive inverters requiring stable component supply and long-term manufacturing continuity.

Supply support for STTH16L06CT 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, microcontroller, and sensor solutions for industrial, automotive, and consumer markets.

The STTH series belongs to ST's Turbo 2 ultrafast rectifier product line, engineered specifically for high-efficiency, high-frequency AC-DC conversion in industrial power supplies and PFC stages where low trr, soft recovery, and thermal robustness are critical.

FAQ

What is the thermal resistance from junction to case for each diode in STTH16L06CT?

The junction-to-case thermal resistance is 2.5 °C/W per diode in TO-220AB configuration. This value applies when heat is conducted directly from the die through the insulated tab to an external heatsink. Total device Rth(j-c) is 1.6 °C/W due to thermal coupling between diodes, as confirmed in Table 3 of the official datasheet (Doc ID 10760 Rev 2).

Can STTH16L06CT be used as a replacement for a single-diode 600 V rectifier?

Yes - either anode (A1 or A2) can be used independently with the common cathode (K) as a standalone 600 V, 10 A ultrafast rectifier. The unused anode must be left unconnected or tied to a fixed potential below cathode voltage to prevent unintended conduction. Pin compatibility with single-diode TO-220AB devices is maintained, though footprint differs slightly due to dual-anode leadframe.

What is the maximum surge current rating for STTH16L06CT?

The non-repetitive surge forward current (IFSM) is 120 A for a 10 ms sinusoidal half-cycle, as specified in Table 2. This rating applies per device (not per diode) and assumes Tj ≤ 175 °C prior to surge. Derating is required for repeated surges or elevated ambient temperatures, and thermal transient analysis should verify junction temperature remains within limit.

Does STTH16L06CT have a built-in thermal protection feature?

No - STTH16L06CT is a passive silicon rectifier diode with no integrated thermal sensing or shutdown circuitry. Protection relies entirely on external thermal design: heatsink sizing, airflow, and system-level monitoring. Its 175 °C maximum junction temperature serves as a design boundary; exceeding this risks irreversible parametric shift or catastrophic failure.