The **DSP1A-DC6V-R** is a high-performance, subminiature power relay manufactured by Panasonic (formerly Matsushita). It is widely used in industrial automation, consumer electronics, and power control circuits due to its compact size and high switching capacity. --- ## 1. Technical Specifications The following table outlines the primary electrical and mechanical characteristics of the DSP1A-DC6V-R: | Parameter | Specification | | :--- | :--- | | **Contact Form** | 1 Form A (SPST-NO - Single Pole Single Throw, Normally Open) | | **Coil Voltage** | 6V DC | | **Contact Rating (Resistive)** | 8A @ 250V AC / 5A @ 30V DC | | **Max. Switching Voltage** | 250V AC / 30V DC | | **Coil Power Consumption** | Approx. 300 mW | | **Terminal Type** | Through Hole (PCB Mount) | | **Contact Material** | AgSnO₂ (Silver Tin Oxide) | | **Sealing Rating** | Sealed (Protective construction for soldering/washing) | --- ## 2. Key Features * **High Sensitivity:** The relay operates with a low nominal power consumption of 300mW, making it compatible with many transistor/IC drivers. * **High Breakdown Voltage:** Provides excellent insulation between the coil and the contacts (Surge withstand voltage of 8,000V). * **Compact Footprint:** Designed for high-density PCB mounting where space is limited. * **Polarized Design:** Note that this relay is **polarized**, meaning the "+" and "-" pins of the coil must be connected correctly for the relay to actuate. --- ## 3. Pinout and Internal Diagram The "1A" designation indicates a single set of contacts that are open by default. ```text Internal Logic: (Coil +) [1] ●-------┐ | (Coil Inductor) (Coil -) [2] ●-------┘ (COM) [3] ●-------/ -------● [4] (NO - Normally Open) ``` --- ## 4. Common Applications * **Office Equipment:** Printers, copiers, and power supplies. * **Home Appliances:** Air conditioners, microwave ovens, and heaters. * **Industrial:** PLC (Programmable Logic Controller) outputs and sensor switching. * **Audio/Visual:** Power management for amplifiers and receivers. ---