The **MAH26FAX-R** is a high-performance, high-voltage Power MOSFET, typically used in power conversion applications such as switching regulators, converters, and motor drivers. ### Technical Specifications The following table summarizes the primary electrical characteristics of the MAH26FAX-R: | Parameter | Description | Typical Value | | :--- | :--- | :--- | | **Type** | Channel Type | N-Channel | | **$V_{DSS}$** | Drain-Source Voltage | 600V - 650V | | **$I_D$** | Continuous Drain Current | 26A | | **$R_{DS(on)}$** | Static Drain-Source On-Resistance | ~0.20 - 0.26 $\Omega$ | | **Package** | Physical Housing | TO-3P / TO-247 (Full Pack) | | **$V_{GS}$** | Gate-Source Voltage | $\pm$30V | --- ### Core Electronic Components & Features #### 1. N-Channel MOSFET Structure The device is an N-Channel enhancement mode field-effect transistor. It uses electrons as the primary charge carriers, which allows for faster switching speeds compared to P-channel alternatives. #### 2. Gate Protection Most "FAX-R" variants include an internal **Zener Diode** between the gate and the source. This protects the sensitive gate oxide layer from electrostatic discharge (ESD) and voltage spikes that exceed the $V_{GS}$ rating. #### 3. Thermal Management The "FAX" suffix often denotes a **Full-Pack (Isolated)** package. * **Insulation:** The metal tab is covered in a mold resin, meaning you do not need an external mica insulator when mounting it to a heatsink. * **Heat Dissipation:** Despite the insulation, it maintains a low thermal resistance to allow high current throughput without thermal runaway. #### 4. Body Diode It contains an integrated source-drain diode. In inductive load applications (like motors), this diode acts as a "freewheeling" diode to protect the transistor from back-EMF (electromotive force). --- ### Common Applications Due to its high voltage rating and current capacity, this part is found in: * **Switch Mode Power Supplies (SMPS):** Used in the primary switching stage. * **Uninterruptible Power Supplies (UPS):** Managing battery-to-AC conversion. * **Industrial Controls:** High-power DC motor PWM controllers. * **Solar Inverters:** Converting DC panels to high-voltage AC grids.