The **PP-13-R** is a specific model of a power plug/connector component, typically categorized under **DC Power Jacks** or **Power Entry Modules**. It is most commonly associated with CUI Devices (formerly CUI Inc). --- ## Technical Specifications The PP-13-R is a power plug designed to deliver DC current to electronic devices. Below are the primary technical characteristics: | Feature | Specification | | :--- | :--- | | **Component Type** | DC Power Plug (Male) | | **Mounting Type** | Cable Mount (Solder) | | **Connector Type** | Barrel Plug | | **Inner Diameter** | 1.35 mm | | **Outer Diameter** | 3.5 mm | | **Current Rating** | 2.0 A (Amperes) | | **Voltage Rating** | 24 VDC | | **Contact Plating** | Nickel | --- ## Construction and Parts The PP-13-R consists of several internal and external electronic parts that ensure a secure electrical connection: ### 1. The Barrel (Tip/Sleeve) The metal cylinder is divided into two conductors. The **inner tip** and the **outer sleeve** are separated by an insulator to prevent short circuits. In the PP-13-R, the outer diameter is a standard 3.5mm. ### 2. Solder Terminals Inside the plastic housing, there are two metal tabs: * **Center Pin Terminal:** Connects to the internal wire of the DC cable. * **Sleeve/Ground Terminal:** Connects to the shielding or negative wire. ### 3. Strain Relief The "R" in the part number often denotes compliance or a specific orientation/housing style. It usually includes a flexible plastic or rubber tail that prevents the cable from snapping at the point of connection. ### 4. Insulator Ring A small plastic ring located at the very tip of the plug that ensures the positive and negative contacts do not touch when inserted into a female jack. --- ## Usage Scenarios Because of its small size (1.35mm ID), the PP-13-R is frequently used in: * Small consumer electronics (clocks, routers). * Handheld medical devices. * Low-voltage power adapters (Wall Warts). * DIY electronics projects requiring a 3.5mm x 1.35mm interface. --- ## Example Wiring (Pseudo-Code Logic) When soldering this part, the standard polarity logic is: ```cpp // Standard DC Polarity (Center Positive) Wire_Red = Center_Terminal; // Positive (+) Wire_Black = Sleeve_Terminal; // Negative/Ground (-) ```