STMicroelectronics STP45N60DM6

Overview

STP45N60DM6 from STMicroelectronics is a high-voltage N-channel Power MOSFET in the MDmesh DM6 series, designed for high-efficiency bridge topologies and ZVS phase-shift converters. It delivers 600 V V_DS, 99 mΩ R_DS(on) max at 10 V V_GS, 30 A continuous drain current at T_C = 25 °C, and features a fast-recovery body diode with 110 ns t_rr and 0.5 µC Q_rr at 25 °C - enabling reduced switching losses in hard-switched and resonant SMPS.

For engineers reviewing the STP45N60DM6 datasheet, STP45N60DM6 pinout, STP45N60DM6 application, or STP45N60DM6 equivalent, key selection criteria include its 100 V/ns dv/dt ruggedness, 100% avalanche tested reliability, low 44 nC total gate charge, and TO-220 package thermal resistance of 0.6 °C/W (junction-to-case), critical for thermally constrained industrial power designs.

Technical Context

This MOSFET employs ST's MDmesh DM6 silicon technology, integrating a Zener-protected gate structure and optimized cell layout to achieve both ultra-low R_DS(on) per die area and fast-recovery diode performance. Its 85 mΩ typical R_DS(on) and 1920 pF C_iss support high-frequency operation up to 200 kHz in LLC and phase-shift full-bridge converters.

The device exhibits exceptional unclamped inductive switching robustness: 6 A repetitive avalanche current and 630 mJ single-pulse E_AS at T_J = 25 °C. Its 1.5 Ω intrinsic gate resistance and 25 nC Q_gd enable precise control of Miller plateau timing and reduce risk of spurious turn-on in high-dv/dt environments.

Key Specifications

Pinout & Package

STP45N60DM6 is housed in a TO-220 type A package with isolated tab (pin 2). The case is electrically connected to the drain terminal, requiring insulated mounting hardware when drain is not at chassis ground.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-voltage power switching applications.

Compared with STW45N60DM6, STP45N60DM6 trades 40 W thermal headroom and 12.5 °C/W higher R_thJA for TO-220 footprint compatibility and lower assembly cost; versus IPP60R190C7, it offers superior diode recovery and 53% lower conduction loss but requires more gate drive strength.

Availability

STP45N60DM6 is available at Aetrix Electronics and suitable for industrial switch-mode power supplies, telecom rectifiers, uninterruptible power supplies, and solar inverters requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for STP45N60DM6 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, specializing in power management, microcontrollers, and analog/mixed-signal ICs for industrial, automotive, and consumer markets.

This device belongs to the MDmesh DM6 Power MOSFET product line, engineered specifically for high-efficiency, high-frequency switched-mode power conversion in 400–800 V DC bus systems.

FAQ

What is the maximum continuous drain current at 100 °C case temperature?

The STP45N60DM6 supports 19 A continuous drain current at T_C = 100 °C, as specified in Table 1 of DS11664 Rev 4. This derating reflects thermal limitations of the TO-220 package and must be applied when heatsink temperature exceeds 75 °C in sustained operation.

Does the body diode require external snubbing in hard-switched applications?

No external snubber is required due to the device's 100 V/ns dv/dt ruggedness and fast-recovery characteristics (110 ns t_rr, 0.5 µC Q_rr). However, layout optimization - including minimized loop inductance and gate-source decoupling - remains essential to maintain this performance in practice.

Is the TO-220 tab electrically isolated from the leads?

No - the metal tab (pin 2) is internally connected to the drain terminal. Electrical isolation from the heatsink or PCB mount is mandatory unless the drain node is intentionally tied to chassis ground or the heatsink potential.

Can STP45N60DM6 replace STP40NF20 in existing 600 V designs?

No - STP40NF20 is a 200 V device with different voltage rating, R_DS(on), and gate threshold. Direct replacement would cause catastrophic failure at 400+ V bus voltages. STP45N60DM6 is not backward-compatible with lower-voltage predecessors.