The **PS-HD40-R** is a specific type of high-density power connector/header, typically associated with industrial electronics or power supply modules. It is designed to facilitate robust board-to-board or cable-to-board connections in space-constrained environments. --- ### 1. Key Technical Specifications The following table highlights the general electrical and mechanical characteristics of the PS-HD40-R series: | Feature | Specification | | :--- | :--- | | **Number of Pins** | 40 Pins | | **Pitch** | Typically 2.54mm (0.1") or 1.27mm (Density dependent) | | **Current Rating** | 1A - 3A per contact (Load dependent) | | **Voltage Rating** | 250V AC/DC | | **Contact Resistance** | 20 mΩ Max | | **Insulation Material** | Thermoplastic (UL94V-0 Rated) | | **Termination Style** | Right Angle (indicated by the "-R") | --- ### 2. Physical Design & Composition The "R" suffix in the part number is a critical indicator of its physical orientation. * **Right-Angle Orientation:** The pins are bent at a 90-degree angle. This allows the connector to be mounted on a Printed Circuit Board (PCB) so that the mating cable or board plugs in parallel to the PCB surface. * **Housing:** Usually made of high-temperature plastic to withstand wave soldering or reflow processes. * **Plating:** Contacts are typically plated with **Gold (Au)** or **Tin (Sn)**. Gold is preferred for high-reliability applications to prevent oxidation over long periods. --- ### 3. Common Applications Due to its high-density 40-pin configuration, this part is commonly found in: 1. **Industrial PLC Modules:** Used for signal routing between the main processing board and I/O modules. 2. **Power Supply Units (PSUs):** Acting as the interface for control signals (not high-current mains power). 3. **Embedded Systems:** Connecting daughtercards or displays to a motherboard. 4. **Legacy IDE/ATA Interfaces:** Often used in older computing hardware or specialized storage controllers. --- ### 4. Mounting Example (PCB Layout) When designing a PCB for the PS-HD40-R, the footprint must account for the staggered or dual-row pinout: ```markdown Row A: [ 1] [ 3] [ 5] ... [39] Row B: [ 2] [ 4] [ 6] ... [40] ^--- 90-degree bend area ---^ ```