The **8130L-AF5-D-R** is a specific part number for a voltage detector Integrated Circuit (IC), commonly manufactured by companies like **UTC (Unisonic Technologies)**. This component is primarily used for power supply monitoring and system reset functions. --- ### 1. Component Overview The 8130L series is designed to monitor a voltage level and provide a signal when the voltage drops below a specific threshold. | Feature | Specification | | :--- | :--- | | **Function** | Voltage Detector / Reset IC | | **Detection Voltage** | 3.0V (indicated by the '30' in the part number) | | **Package Type** | SOT-25 / SOT-23-5 (indicated by 'AF5') | | **Output Type** | Open Drain (typically denoted by 'L') | | **Status** | Active / RoHS Compliant | --- ### 2. Part Number Breakdown The nomenclature for this IC can be decoded as follows: * **81**: Series code (Voltage Detector). * **30**: Detection Voltage (3.0V). * **L**: Output configuration (Open Drain, Active Low). * **AF5**: Package code (SOT-25). * **D**: Operating temperature/Grade or Halogen-free status (varies by manufacturer). * **R**: Packing Type (Tape & Reel). --- ### 3. Pin Configuration For the SOT-25 (AF5) package, the standard pinout is typically: 1. **Vout**: Output Pin (Low when Vin < Vthreshold). 2. **Vdd**: Power Supply/Sensing Pin. 3. **Vss**: Ground. 4. **NC/CD**: No Connection or Delay Capacitor (depending on specific sub-variant). 5. **NC**: No Connection. --- ### 4. Key Applications This electronic part is commonly found in battery-powered devices and micro-processing units to ensure the system does not operate under unstable voltage conditions. * **Microprocessor Reset:** Providing a reset signal to a CPU during power-up or brown-out. * **Battery Checking:** Monitoring battery levels to trigger a "low battery" warning. * **Level Discriminator:** Acting as a simple comparator for specific voltage thresholds. --- ### 5. Typical Circuit Example Because it is an **Open Drain** output, it requires a pull-up resistor to operate correctly. ```c Vdd (Source) | +-------[ Pull-up Resistor ]-------+ | | [ Vdd ] [ Vout ] ---> To Reset Pin of MCU 8130L-AF5 [ Vss ] | GND ```