## EB2-5TNUE-R Electronic Component Overview The **EB2-5TNUE-R** is a specific model of subminiature signal relay manufactured by **KEMET** (formerly NEC/Tokin). It belongs to the EB2 series, which is known for its compact size, high reliability, and surface-mount design. ### 1. Technical Specifications The table below summarizes the core electrical and physical characteristics of the EB2-5TNUE-R: | Parameter | Specification | | :--- | :--- | | **Relay Type** | Latching (Double Coil) | | **Contact Form** | 2 Form C (DPDT - Double Pole Double Throw) | | **Nominal Coil Voltage** | 5 VDC | | **Contact Rating** | 30W, 62.5VA (Max 220VDC / 250VAC) | | **Max Switching Current** | 1 A | | **Coil Resistance** | 178 $\Omega$ (approx.) | | **Mounting Type** | Surface Mount (SMD) | | **Terminal Shape** | Standard (Gull-wing) | | **Packaging** | Taping and Reel (indicated by the "-R" suffix) | --- ### 2. Breakdown of the Part Number The alphanumeric code provides specific details about the component's construction: * **EB2**: Series name (Subminiature Signal Relay). * **5**: Nominal coil voltage (5 Volts). * **T**: Latching type (Double Coil). * **NUE**: Standard version with specific insulation/lead-free compliance. * **-R**: Indicates the part is supplied on a Tape and Reel for automated assembly. --- ### 3. Key Features and Applications #### Features * **Compact Footprint:** Requires minimal PCB space, ideal for high-density electronics. * **High Breakdown Voltage:** Offers excellent insulation between coil and contacts. * **Latching Mechanism:** Since it is a double-coil latching relay, it only requires a pulse of energy to change states. It stays in its last position without continuous power, making it highly **energy-efficient**. * **FCC Part 68 Compliance:** Meets standard requirements for telecommunications equipment. #### Common Applications 1. **Telecommunications:** Switching lines in PABX or modem equipment. 2. **Instrumentation:** Signal routing in test and measurement devices. 3. **Medical Equipment:** Low-power switching in diagnostic tools. 4. **Consumer Electronics:** Power management in battery-operated devices where energy saving is critical. --- ### 4. Coil Configuration (Double Coil Latching) Unlike a standard "Non-latching" relay, the EB2-5TNUE-R has two separate coils: 1. **Set Coil:** When pulsed, the contacts move to the "Set" position. 2. **Reset Coil:** When pulsed, the contacts return to the "Reset" position.