## Technical Overview of EB2-12SNUE-R The **EB2-12SNUE-R** is a high-performance, subminiature signal relay manufactured by KEMET (formerly NEC/TOKIN). It belongs to the EB2 series, which is specifically designed for high-density mounting and low power consumption applications. ### 1. Key Technical Specifications | Feature | Specification | | :--- | :--- | | **Contact Form** | 2 Form C (DPDT - Double Pole Double Throw) | | **Nominal Voltage** | 12 VDC | | **Coil Type** | Single Coil Latching | | **Max Switching Power** | 30 W / 62.5 VA | | **Max Switching Voltage** | 220 VDC / 250 VAC | | **Max Switching Current** | 1 A | | **Contact Resistance** | 75 mΩ (Initial) | | **Mounting Type** | Surface Mount (SMT) - Gull-wing leads | --- ### 2. Deep Dive into Part Number Suffixes The part number breaks down as follows to define its physical and electrical characteristics: * **EB2**: Series name (Subminiature Signal Relay). * **12**: Nominal coil voltage (12 Volts). * **S**: Latching type (**Single Coil**). Unlike non-latching relays, this remains in its last state without continuous power. * **NUE**: Refers to the lead shape and package type (Standard SMT terminal shape). * **-R**: Indicates **Tape and Reel** packaging for automated pick-and-place assembly. --- ### 3. Core Features & Benefits 1. **Latching Operation**: Because it is a "Single Coil Latching" relay, it only requires a short pulse of energy to switch states. This makes it ideal for battery-powered devices where power conservation is critical. 2. **Compact Footprint**: The EB2 series is known for its low profile and small surface area, allowing for dense PCB layouts. 3. **High Reliability**: It features high breakdown voltage (1000 VAC between open contacts) and is designed to meet FCC Part 68 surge requirements (1500 V). 4. **Signal Integrity**: It is optimized for low-level signal switching, often used in telecommunications and test equipment. --- ### 4. Typical Applications * **Telecommunications**: Switching lines in PABX and modems. * **Measurement Equipment**: Signal routing in oscilloscopes and multimeters. * **Medical Electronics**: Low-power diagnostic tools. * **Security Systems**: Control boards and sensor switching.