### Overview of EB2-5SNUH-R The **EB2-5SNUH-R** is a high-performance, miniature signal relay manufactured by **KEMET** (formerly NEC/Tokin). It belongs to the EB2 series, which is specifically designed for low-power applications requiring high reliability and compact form factors. --- ### Technical Specifications Below is a breakdown of the key electronic characteristics for this specific model: | Parameter | Specification | | :--- | :--- | | **Relay Type** | Non-latching (Monostable) | | **Contact Form** | DPDT (2 Form C) | | **Nominal Coil Voltage** | 5 VDC | | **Coil Resistance** | 178 $\Omega$ (approx.) | | **Nominal Operating Power** | 140 mW | | **Maximum Switching Voltage** | 250 VAC / 220 VDC | | **Maximum Switching Current** | 1 A | | **Contact Material** | Silver alloy with gold overlay | | **Mounting Type** | Surface Mount (SMD) - Gull-wing | --- ### Part Number Breakdown Understanding the suffix "SNUH-R" is critical for identifying the specific physical and functional properties: * **EB2**: Series name (Miniature Signal Relay). * **5**: Nominal coil voltage (5V). * **S**: Slim/Compact package style. * **NU**: Standard type (complies with FCC Part 68 surge requirements). * **H**: High insulation/High breakdown voltage version. * **-R**: Taped and Reeled packaging (for automated pick-and-place). --- ### Key Features and Benefits 1. **High Reliability**: The gold-overlay silver alloy contacts ensure low contact resistance and stable performance even when switching low-level signals (dry circuits). 2. **Compact Footprint**: Designed for high-density PCB mounting, saving significant board space compared to traditional through-hole relays. 3. **Surge Strength**: Withstands surge voltages between contacts and coil (2,500V) and between open contacts (1,500V), meeting FCC Part 68 standards. 4. **Low Power Consumption**: The 140mW nominal power consumption makes it ideal for energy-efficient or battery-powered devices. --- ### Typical Applications * **Telecommunications**: Switching lines in PBX and central office equipment. * **Measurement Equipment**: Signal routing in oscilloscopes, multimeters, and data loggers. * **Medical Electronics**: Low-power signal isolation. * **Consumer Electronics**: Audio/Video signal switching. ---