The **M2REB-S2B-R** is a specific electronic component typically classified as a **Miniature Pushbutton Switch** or a related tactile interface component, often manufactured by companies like **NKK Switches**. Below is a detailed breakdown of its electronic and mechanical specifications. --- ### 1. General Specifications This part belongs to a series of high-reliability, subminiature switches designed for PCB (Printed Circuit Board) mounting. | Parameter | Specification | | :--- | :--- | | **Component Type** | Pushbutton Switch | | **Circuit Configuration** | SPDT (Single Pole Double Throw) | | **Switch Function** | ON - (ON) / Momentary | | **Mounting Type** | Through-Hole (PCB Mount) | | **Actuator Style** | Plunger / Round | --- ### 2. Electrical Characteristics These parameters define the limits of the electrical load the switch can handle safely. * **Current Rating:** Typically rated for low logic levels, often around **0.4VA maximum** at **28V AC/DC maximum**. * **Contact Resistance:** Generally below **50 milliohms** (initial). * **Insulation Resistance:** Minimum of **500 Megohms** at 500V DC. * **Dielectric Strength:** Capable of withstanding **500V AC** for at least one minute. --- ### 3. Mechanical & Material Details The "R" suffix in the part number often denotes specific compliance or packaging standards (such as RoHS compliance). * **Actuation Force:** Usually light to medium (approx. 1.5N to 3N) to provide tactile feedback. * **Mechanical Life:** Designed for high durability, often rated for **50,000 to 100,000 cycles**. * **Terminals:** Gold-plated terminals are standard for this series to ensure reliable logic-level switching and prevent oxidation. * **Sealing:** Many variants in this series feature an automated soldering-friendly design with internal O-rings or epoxy seals to prevent flux entry. --- ### 4. Part Number Breakdown (Typical) | Segment | Meaning | | :--- | :--- | | **M2** | Series designation (Micro-subminiature) | | **REB** | Actuator and Frame Type (Process Sealed / Pushbutton) | | **S2** | Terminal style (Straight PC Mount) | | **B** | Contact Material (Gold) | | **R** | RoHS Compliant / Revision code | --- ### 5. Common Applications Due to its small footprint and high reliability, the M2REB-S2B-R is commonly found in: 1. **Handheld Devices:** Power or reset buttons. 2. **Instrumentation:** Mode selection in medical or industrial testing gear. 3. **Telecommunications:** Signal switching in networking hardware. 4. **Peripheral Equipment:** Input buttons on specialized keyboards or controllers.