The **D4D0106S-R30C** is a high-quality rotary switch manufactured by Electroswitch. It is part of their D4 Series, which is known for its rugged construction and reliability in industrial and military applications. --- ### ## Technical Specifications | Parameter | Specification | | :--- | :--- | | **Manufacturer** | Electroswitch | | **Series** | D4 Series | | **Circuit Configuration** | SP6T (Single Pole, 6 Throw) | | **Number of Positions** | 6 Positions | | **Number of Decks** | 1 Deck | | **Actuator Type** | Round (6.35mm / 0.25" Dia) | | **Contact Timing** | Shorting (Make-Before-Break) | | **Angle of Throw** | 30° | | **Mounting Type** | Panel Mount | --- ### ## Key Features & Construction ### 1. Contact Mechanism The "S" in the part number signifies **Shorting** (Make-Before-Break) contacts. This means that during the transition between positions, the switch momentarily connects to the next position before disconnecting from the previous one. This is critical in audio or power applications to prevent "pops" or open-circuit spikes. ### 2. Materials * **Contacts:** Usually silver-plated brass or silver alloy, ensuring low contact resistance and high conductivity. * **Insulation:** High-grade ceramic or diallyl phthalate (DAP), providing excellent dielectric strength and resistance to high temperatures. ### 3. Durability These switches are designed for long lifecycles (often exceeding 25,000 cycles) and are built to withstand mechanical shock and vibration. --- ### ## Application Use Cases * **Test Equipment:** For selecting different measurement ranges (Volts, Amps, Ohms). * **Audio Equipment:** Used in high-end amplifiers or studio gear for input selection. * **Industrial Controls:** Setting modes of operation or speed controls on machinery. * **Communication Systems:** Selecting different frequency bands or antenna paths. --- ### ## Pinout Logic (SP6T) Since this is a Single Pole, 6 Throw switch with a 30° throw: 1. **Common Terminal:** One input terminal located typically in the center or a specific offset position. 2. **Output Terminals:** Six distinct terminals arranged in a circle. As you rotate the shaft 30 degrees, the common terminal connects to the next output pin sequentially.