## Detailed Overview of the EE2-5SNUN-R6 The **EE2-5SNUN-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 compact size, high reliability, and low power consumption. --- ### 1. Key Technical Specifications | Parameter | Specification | | :--- | :--- | | **Contact Form** | 2 Form C (DPDT - Double Pole Double Throw) | | **Coil Voltage (Nominal)** | 5 VDC | | **Configuration** | Single Coil Latching (Memory Type) | | **Contact Rating** | 30W, 62.5VA (Max 220VDC / 250VAC) | | **Contact Current** | 2A (Max) | | **Mounting Type** | Surface Mount Device (SMD) | | **Terminal Shape** | Standard SMT (Gull-wing) | | **Package/Case** | 8-pin Gull-wing | --- ### 2. Specialized Electronic Features * **Latching Mechanism:** Unlike standard non-latching relays that require continuous power to stay engaged, the **EE2-5SNUN** is a **single-coil latching** type. It only requires a brief pulse of current to flip the switch state and stays in that position without further power. * **High Dielectric Strength:** Designed to withstand high surges (up to 2500V between open contacts), making it suitable for telecommunications. * **Low Power Consumption:** Because it is a latching relay, it is ideal for battery-powered or energy-efficient circuits. * **Silver Alloy Contacts with Gold Overlay:** This ensures high reliability and prevents contact oxidation, making it suitable for switching low-level signals. --- ### 3. Part Number Breakdown (EE2-5SNUN-R6) Understanding the suffix codes is critical for identifying the specific variant: * **EE2**: Series name (Miniature Signal Relay). * **5**: Nominal coil voltage (5 Volts). * **SN**: Single Coil Latching type. * **U**: High breakdown voltage type (FCC compliant). * **N**: Standard SMT terminal shape. * **-R6**: Indicates the packaging format (Embossed Carrier Tape, typically 600 pieces per reel). --- ### 4. Common Applications * **Telecommunications:** Switching telephone lines and modem signals. * **Measurement Equipment:** Oscilloscopes and automated test equipment (ATE). * **Consumer Electronics:** Power management and audio switching. * **Medical Equipment:** Low-power signal isolation. --- ### 5. Basic Wiring Logic To operate this latching relay, you reverse the polarity across the two coil pins: 1. **Set:** Apply +5V to Pin 1 and Ground to Pin 8 (Pulse duration > 2ms). 2. **Reset:** Apply Ground to Pin 1 and +5V to Pin 8 (Pulse duration > 2ms).