The **MHR16FGJ-R** is a specific electronic component typically categorized as a **High-Voltage Resistor** or a **Focus Resistor Network**. These components are widely used in CRT (Cathode Ray Tube) displays, medical imaging equipment, and precision high-voltage power supplies. --- ### 1. General Specifications While specific datasheets vary by manufacturer (often associated with brands like Murata or specialized passive component makers), the "MHR" series generally follows these parameters: | Parameter | Typical Value / Description | | :--- | :--- | | **Component Type** | High-Voltage Resistor / Focus Potentiometer | | **Resistance Range** | Often in the Mega-ohm (MΩ) or Giga-ohm (GΩ) range | | **Voltage Rating** | High Voltage (typically 10kV to 30kV+) | | **Mounting Type** | Through-hole (Radial or specialized lead frames) | | **Coating** | Flame-retardant silicone or epoxy resin | --- ### 2. Functional Breakdown The MHR16FGJ-R serves several critical roles in a high-voltage circuit: * **Voltage Division:** It acts as a precise voltage divider to provide stable focus voltages from a high-voltage source (like a Flyback transformer). * **Surge Protection:** Built to withstand transient voltage spikes without arcing or dielectric breakdown. * **Stability:** Designed with a low Temperature Coefficient of Resistance (TCR) to ensure that output voltage remains stable even as the device heats up. --- ### 3. Key Features of the "FGJ-R" Variant The suffix in the part number usually indicates specific tolerances or packaging: 1. **High Reliability:** The "-R" often denotes RoHS compliance or a specific reliability rating for industrial use. 2. **Precision:** These resistors are calibrated to have tight tolerances (often ±1% to ±5%) because even a small drift in a focus circuit can cause significant image blurring or sensor inaccuracies. 3. **Compact Geometry:** Designed to maximize the "creepage distance" (the distance over the surface of the insulation) to prevent electrical tracking between pins. --- ### 4. Common Applications * **CRT Monitors/TVs:** Controlling the focus and G2 (screen) voltages. * **X-Ray Equipment:** Managing precision high-voltage bias. * **Mass Spectrometry:** Providing stable potentials for ion acceleration. * **Electrostatic Copiers:** Controlling the charge on drums or rollers. --- ### 5. Safety Warning When working with parts like the **MHR16FGJ-R**, be aware that they are connected to **high-voltage nodes**. Even after a device is powered off, capacitors associated with these resistors can hold a lethal charge. Always discharge the circuit properly before handling.