The **MHR13TCJ-R** is a high-voltage, high-reliability resistor, typically manufactured by companies like **Murata** or other specialty electronic component suppliers. It is designed for focus circuits in CRT displays, medical imaging, or high-potential power supplies. --- ## 1. Core Technical Specifications The component is characterized by its ability to handle extremely high voltage while maintaining a compact form factor. | Parameter | Typical Value / Description | | :--- | :--- | | **Component Type** | High Voltage Resistor / Focus Resistor | | **Resistance Value** | Variable / Multi-tap (often in the MΩ range) | | **Max Operating Voltage** | Up to 13kV - 15kV (depending on specific series) | | **Tolerance** | Usually ±5% to ±10% | | **Mounting Type** | Through-hole / Lead type | | **Construction** | Thick Film on Ceramic Substrate | --- ## 2. Key Electronic Features ### High Voltage Stability The MHR series uses thick-film technology printed on a high-purity ceramic substrate. This allows the resistor to withstand thousands of volts without internal arcing or dielectric breakdown. ### Flame Retardancy The outer coating is usually a high-insulation, flame-retardant silicone or epoxy resin. This is critical because high-voltage components are prone to "tracking" (surface discharge) if moisture or dust accumulates. ### Resistance Taps The "TCJ" designation often refers to a specific configuration of internal taps. These resistors act as a voltage divider, allowing a single component to provide different output voltages (e.g., for Focus 1 and Focus 2 in a display tube). --- ## 3. Typical Applications Due to its high-voltage rating, it is rarely found in consumer low-voltage electronics. Its primary uses include: 1. **CRT Displays/Monitors:** Used in the High-Tension (EHT) circuit to regulate the focus voltage of the electron gun. 2. **Medical Equipment:** X-ray power supplies and imaging sensors that require precision high-voltage dividers. 3. **Scientific Instruments:** Mass spectrometers or electron microscopes. 4. **Static Eliminators:** Industrial equipment used to neutralize static electricity. --- ## 4. Handling Precautions * **Creepage Distance:** When PCB layout is designed, the distance between the pins of the MHR13TCJ-R and other components must be maximized to prevent air ionization or arcing. * **Cleaning:** Flux residue must be thoroughly cleaned after soldering, as conductive residues can cause high-voltage leakage.