The **MHO+25FBD-R** is a specific part number typically associated with **Metal Oxide Film Resistors**. These components are widely used in power supplies, industrial controls, and consumer electronics due to their stability and high-temperature performance. --- ### 1. Technical Specifications Table The following table breaks down the core characteristics of this resistor series based on standard industry naming conventions: | Feature | Specification Details | | :--- | :--- | | **Component Type** | Metal Oxide Film Resistor | | **Power Rating** | 0.25 Watts (1/4W) | | **Resistance Tolerance** | ±1% (denoted by 'F') | | **Flame Retardancy** | UL94V-0 (Standard for MHO series) | | **Mounting Type** | Through-hole (Axial Lead) | | **Operating Temp Range** | -55°C to +155°C (Typical) | --- ### 2. Part Number Breakdown (Nomenclature) Understanding the alphanumeric code helps identify the specific physical and electrical properties: * **MHO**: Indicates the series (Metal Oxide Film). These are preferred over carbon film for high-power applications because they do not catch fire easily. * **25**: Represents the power rating (0.25 Watts). * **F**: Represents the **Tolerance**. (F = ±1%, J = ±5%, G = ±2%). * **B**: Often refers to the packing style (e.g., Bulk or Box). * **D**: Can refer to the lead shape or specific body dimensions (Series dependent). * **R**: Generally indicates compliance with **RoHS** (Restriction of Hazardous Substances) standards. --- ### 3. Key Advantages * **High Stability:** Better resistance to environmental factors (humidity and heat) compared to carbon film resistors. * **Flameproof Construction:** The coating is designed not to ignite even under severe overload conditions. * **Low Noise:** Provides a cleaner signal in audio and precision circuits. * **High Surge Capacity:** Capable of handling brief pulses of high voltage better than standard film resistors. --- ### 4. Common Applications 1. **Switching Power Supplies:** Used as bleeder resistors or in feedback loops. 2. **Audio Equipment:** Employed in signal paths where low thermal noise is required. 3. **Protection Circuits:** Acts as a "fusible" component in some designs to protect more expensive semiconductors. 4. **Household Appliances:** Found in control boards for washing machines and microwaves due to heat resistance.