## ALDY-32-R Electronic Parts & Specifications The **ALDY-32-R** is a specific part number typically associated with **Fujitsu/Takamisawa** signal relays (specifically the AL-D series). These are precision electromechanical switches designed for low-signal switching applications. --- ### 1. Key Technical Specifications The "ALDY-32-R" part code defines its electrical and physical characteristics. Here is a breakdown of its primary electronic properties: | Feature | Specification | | :--- | :--- | | **Relay Type** | Polarized Latching Relay | | **Contact Arrangement** | 2 Form C (DPDT - Double Pole Double Throw) | | **Coil Voltage** | 3V DC (indicated by the '3') | | **Coil Type** | Dual Winding (Latching) | | **Contact Rating** | 1A at 30VDC / 0.5A at 125VAC | | **Power Consumption** | Approx. 200mW (Standard) | | **Mounting Type** | Through-hole (PCB) | --- ### 2. Electronic Component Breakdown #### A. The Coil (Actuator) The "DY" suffix indicates a **2-coil latching** mechanism. * **Latching Function:** Unlike standard relays that require continuous power to stay "ON," this part uses a permanent magnet. You apply a short pulse to one coil to "Set" the state, and a pulse to the second coil to "Reset" it. * **Energy Efficiency:** It consumes zero power once the state is switched, making it ideal for battery-powered devices. #### B. The Contacts * **Gold Overlay:** The contacts are typically silver-palladium with a gold overlay. This ensures high reliability when switching "dry circuits" (very low current/voltage) by preventing oxidation. * **Bifurcated Design:** The contacts are split (bifurcated) to increase the surface area and ensure a solid connection even if microscopic dust is present. #### C. The Housing * **Sealed Structure:** The "R" at the end often denotes specific packaging or environmental sealing (Plastic Sealed), allowing the part to withstand wave soldering and cleaning processes. --- ### 3. Typical Applications Because of its small footprint and latching nature, the ALDY-32-R is commonly found in: * **Telecommunications:** Switching signal lines in PBX or modems. * **Test & Measurement:** Routing signals in oscilloscopes or multimeters. * **Medical Equipment:** Low-power signal isolation. * **Audio Equipment:** Input/Output switching where low distortion is required. --- ### 4. Comparison Table: Single vs. Dual Coil (AL-D Series) | Specification | Single Coil (AL-D) | Dual Coil (AL-DY) | | :--- | :--- | :--- | | **Pins** | Usually 6-8 pins | Usually 10 pins | | **Operation** | Pulse to Set / Reverse Polarity to Reset | Pulse Coil A to Set / Pulse Coil B to Reset | | **Complexity** | Simple Driving Circuit | Requires two driving transistors/gates | ---