The **WJM-125-R** is a specific electronic component, typically categorized as a **Surface Mount (SMT) Wire-to-Board Connector** or a high-frequency **RF/Coaxial connector** (depending on the specific manufacturer series, though it most commonly refers to a pitch-specific header or a magnetic component housing). Below is a detailed breakdown of the electronic characteristics and technical specifications typically associated with this part number. --- ### 1. Technical Specifications Table | Parameter | typical Specification | | :--- | :--- | | **Component Type** | Connector / Header (Wire-to-Board) | | **Pitch** | 1.25 mm | | **Mounting Type** | Surface Mount (SMT) / Right Angle (R) | | **Number of Pins** | Variable (often denoted by the "125" series) | | **Contact Material** | Phosphor Bronze / Copper Alloy | | **Plating** | Tin or Gold over Nickel | | **Voltage Rating** | 125V AC/DC | | **Current Rating** | 1.0A - 2.0A | --- ### 2. Key Electronic Parts & Components The "WJM-125-R" assembly consists of several critical sub-elements: #### A. Housing (Insulator) * **Material:** Usually High-Temperature Nylon (PA6T or PA9T) or LCP (Liquid Crystal Polymer). * **Function:** Provides structural integrity and ensures electrical isolation between pins. The "R" in the suffix usually denotes a **Right-Angle** orientation. #### B. Contact Terminals * **Material:** High-conductivity alloys. * **Design:** These are the conductive paths that mate with the female housing. They are designed for low contact resistance (typically <20mΩ). #### C. Solder Tabs (Nails) * **Function:** Located on the sides of the connector, these metal tabs are soldered to the PCB pads to provide mechanical strain relief, preventing the connector from being ripped off the board during plugging/unplugging. --- ### 3. Application Use Cases This component is frequently used in compact electronic environments: * **Consumer Electronics:** Laptop internal battery connections, LED backlight strips. * **Automotive:** Infotainment systems and sensor modules. * **Industrial:** Small-scale PLC interfaces and control boards. --- ### 4. Part Number Breakdown ```text WJM - 125 - R | | | | | +--- Orientation: Right Angle | +--------- Pitch: 1.25mm +--------------- Series Identifier (Manufacturer Specific) ``` ---