The **MM1002FE-R58** is a high-precision, high-power thick film chip resistor manufactured by **Ohmite** (specifically part of the Mini-Mox series). These components are designed for high-voltage applications where stability and a small footprint are critical. --- ### 1. Technical Specifications The following table outlines the primary electrical and physical characteristics of the MM1002FE-R58: | Parameter | Specification | | :--- | :--- | | **Resistance Value** | 10 kOhms (10,000 $\Omega$) | | **Resistance Tolerance** | ±1% | | **Power Rating** | 0.25 Watts (1/4 W) | | **Temperature Coefficient** | ±50 ppm/°C | | **Maximum Voltage** | 500V | | **Technology** | Thick Film (Metal Oxide) | | **Package / Case** | Axial (Mini-Mox) | | **Operating Temperature** | -55°C to +155°C | --- ### 2. Key Features The "Mini-Mox" series is distinguished by several specialized features: * **High Voltage Handling:** Unlike standard surface mount or axial resistors of this size, the MM1002FE is rated for up to **500V**, making it suitable for power supplies and sensing circuits. * **Precision Stability:** With a **1% tolerance** and a low temperature coefficient (**50ppm**), the resistance remains stable even as the component heats up or environments change. * **Epoxy Coating:** The body is typically coated with a durable epoxy that provides excellent environmental protection and dielectric strength. --- ### 3. Application Use Cases Because of its high voltage rating and precision, this part is commonly found in: 1. **Voltage Dividers:** Used in high-voltage measurement equipment to step down voltages for microcontrollers or ADCs. 2. **Medical Electronics:** Precision imaging equipment (X-ray, MRI) where stable high-voltage bias is required. 3. **Industrial Controls:** Surge protection and current limiting in industrial power modules. 4. **Scientific Instrumentation:** Mass spectrometers and vacuum gauges. --- ### 4. Part Number Breakdown Understanding the Ohmite nomenclature for this series: | Segment | Meaning | | :--- | :--- | | **MM1002** | Represents the series and the resistance value (100 + 2 zeros = 10,000 $\Omega$) | | **F** | Tolerance Code (F = ±1%) | | **E** | Environmental/RoHS Compliant (Lead-Free) | | **-R58** | Packaging Code (Tape and Reel or specific lead forming) | ---