The **EE2-5SNU-R6** is a high-performance, miniature signal relay manufactured by KEMET (formerly NEC/Tokin). It belongs to the EE2 series, which is widely recognized for its high reliability and compact footprint in telecommunication and measurement equipment. --- ### 1. Key Technical Specifications The model number encodes specific characteristics of the relay: | Feature | Specification | | :--- | :--- | | **Series** | EE2 (Miniature Surface Mount) | | **Contact Form** | 2 Form C (DPDT - Double Pole Double Throw) | | **Coil Type** | Single Coil Latching | | **Nominal Voltage** | 5 VDC | | **Terminal Type** | SMT (Surface Mount Technology) - Standard Pad | | **Packaging** | R6 (Tape and Reel) | --- ### 2. Functional Characteristics #### Coil Data (5V Model) As a **Single Coil Latching** relay, it does not require continuous power to maintain its state. It uses a pulse to switch. * **Nominal Operating Power:** Approx. 100 mW. * **Set/Reset Voltage:** 75% or less of nominal voltage (3.75V). * **Resistance:** Approximately 250 $\Omega$. #### Contact Ratings * **Maximum Switching Power:** 60 W, 125 VA. * **Maximum Switching Voltage:** 220 VDC, 250 VAC. * **Maximum Switching Current:** 2 A. * **Contact Resistance:** 75 m$\Omega$ (Initial). --- ### 3. Physical & Environmental Features * **Ultra-Compact:** Dimensions are approximately 15mm x 7.5mm x 10mm. * **High Breakdown Voltage:** Offers 2500 V surge withstand voltage between contacts and coil (conforming to FCC standards). * **Heat Resistance:** Designed to withstand infrared (IR) or vapor phase (VP) soldering processes typical in SMT assembly. * **Low Power Consumption:** Because it is a latching type, it is ideal for battery-operated devices. --- ### 4. Common Applications 1. **Telecommunications:** PABX systems, modems, and line cards. 2. **Test & Measurement:** Oscilloscopes, signal generators, and automated test equipment (ATE). 3. **Medical Equipment:** Portable diagnostic tools requiring low power draw. 4. **Consumer Electronics:** Audio switching and high-fidelity equipment. --- ### 5. Wiring Diagram (Conceptual) Since this is a **Single Coil Latching** relay, the polarity of the applied voltage determines the switch position: ```text Pin 1 (+) / Pin 8 (-) -> SET (Connects COM to NO) Pin 1 (-) / Pin 8 (+) -> RESET (Connects COM to NC) ```