The **163-R1** typically refers to a specific model of **DC Power Jack** or **Power Socket**, commonly used in electronic devices to provide a connection point for external power adapters. These components are staple parts in consumer electronics, telecommunications, and industrial equipment. --- ### 1. Technical Specifications The 163-R1 is designed for reliability and specific mechanical fitments. Below are the general specifications associated with this part: | Feature | Specification (Typical) | |:---|:---| | **Pin Diameter** | 2.1mm (Standard for many DC plugs) | | **Bushing/Inner Diameter** | 5.5mm | | **Current Rating** | 1A to 5A (Depending on manufacturer) | | **Voltage Rating** | 12V DC to 24V DC | | **Mounting Type** | PCB Mount (Through-hole) | | **Contact Resistance** | ≤ 30mΩ | | **Insulation Resistance** | ≥ 100MΩ (at 500V DC) | --- ### 2. Physical Design and Pinout The 163-R1 usually features a three-pin configuration to allow for "battery switching" functionality: * **Pin 1 (Center Pin):** Usually connected to the **Positive (+)** terminal of the power supply. * **Pin 2 (Shunt/Switch):** Connected to the internal battery circuit. * **Pin 3 (Outer Sleeve):** Usually connected to the **Ground (GND/-)**. **How the switch works:** When no plug is inserted, Pin 2 and Pin 3 are shorted together, allowing a battery to power the device. When the DC plug is inserted, it physically pushes the contact away, breaking the battery circuit and switching the power source to the external adapter. --- ### 3. Common Applications Due to its robust design and standard sizing, the 163-R1 is found in: * **Audio Equipment:** Wireless microphones, small amplifiers, and pedals. * **Networking:** Routers, modems, and small switches. * **Consumer Electronics:** Laptop chargers, LED lighting controllers, and battery chargers. * **DIY Projects:** Frequently used with Arduino or Raspberry Pi power delivery boards. --- ### 4. Circuit Diagram Representation In a schematic, the part is represented as a jack with a normally closed (NC) switch. ```text [Center Pin] --------> (+) VCC / [Plug] < [Sleeve] --------> (-) GND \ [Switch Pin] --------> To Battery (+) ``` ---