The **75N75G-TQ2-R** is a specific part number for a high-power N-channel enhancement mode MOSFET. This component is widely used in power management and switching applications due to its high current handling and low "on-resistance." --- ## 1. Part Number Breakdown The naming convention usually follows the standard industrial format for power MOSFETs: | Segment | Meaning | Details | | :--- | :--- | :--- | | **75** | Current Rating | Approximately 75 Amperes ($I_D$) | | **N** | Channel Type | N-Channel MOSFET | | **75** | Voltage Rating | 75 Volts ($V_{DSS}$) | | **G** | Halogen Free | Green/RoHS compliant material | | **TQ2** | Package Type | TO-263 (D2PAK) surface mount | | **R** | Packing | Tape & Reel | --- ## 2. Technical Specifications Below are the typical electrical characteristics for this MOSFET: ### Electrical Ratings | Parameter | Symbol | Value | | :--- | :--- | :--- | | Drain-Source Voltage | $V_{DSS}$ | 75 V | | Gate-Source Voltage | $V_{GSS}$ | ±20 V | | Continuous Drain Current | $I_D$ | 75 A | | Static Drain-Source On-Resistance | $R_{DS(on)}$ | ~11 mΩ (typical) | | Total Gate Charge | $Q_g$ | ~115 nC | ### Physical Properties * **Package:** TO-263 (also known as D2PAK). This is a surface-mount package designed for high power and low thermal resistance. * **Mounting Type:** SMD/SMT (Surface Mount Technology). --- ## 3. Pin Configuration The TO-263 package typically follows this standard layout: 1. **Gate (G):** Controls the "on/off" state of the MOSFET. 2. **Drain (D):** Connected to the metal tab on the back for heat dissipation. 3. **Source (S):** Connected to the ground or the negative side of the load. --- ## 4. Key Applications Because of its high current capacity and low resistance, the 75N75G is found in: * **Motor Controllers:** PWM speed control for DC motors. * **DC-DC Converters:** High-efficiency power conversion. * **Uninterruptible Power Supplies (UPS):** Switching stages for battery backup. * **Inverters:** Converting DC battery power to AC power. * **Battery Protection:** High-current disconnect switches. --- ## 5. Equivalent/Alternative Parts If this specific UTC (Unisonic Technologies) part is unavailable, common equivalents include: * **IRFB3077** (Higher performance) * **STP75N75** (Standard through-hole equivalent) * **HUFA75545P3**