The part number **DC2AB3AA** corresponds to a specific configuration of a subminiature microswitch, typically manufactured by **ZF Electronics** (formerly Cherry). These switches are widely used in automotive, industrial, and consumer electronics due to their high reliability and small footprint. Below is a breakdown of the electronic specifications and part nomenclature. --- ### 1. Part Number Breakdown (Nomenclature) The alphanumeric code defines the physical and electrical characteristics of the switch: | Segment | Code | Description | | :--- | :--- | :--- | | **Series** | **DC** | Subminiature Microswitch (DC Series) | | **Rating** | **2** | High rating: 10.1A @ 250VAC (Silver contacts) | | **Circuitry** | **A** | SPDT (Single Pole Double Throw) | | **Operating Force** | **B** | Standard Force (approx. 200cN) | | **Terminal Type** | **3** | Solder Terminals (Short) | | **Actuator Type** | **AA** | Basic Button (No lever) | --- ### 2. Technical Specifications These switches are designed for precision and durability. Here are the core electronic and mechanical parameters: #### Electrical Parameters * **Current Rating:** 10.1 Amps * **Voltage Rating:** 125 / 250 VAC * **Contact Resistance:** < 100 mΩ * **Insulation Resistance:** > 100 MΩ at 500 VDC #### Mechanical Parameters * **Operating Force:** Max 200 cN (centinewtons) * **Release Force:** Min 50 cN * **Pre-travel:** Max 1.0 mm * **Overtravel:** Min 0.6 mm * **Mechanical Life:** Up to 1,000,000 cycles (depending on load) --- ### 3. Internal Circuitry (SPDT) As an **SPDT** switch, it features three internal connections: 1. **COM (Common):** The input power/signal. 2. **NC (Normally Closed):** Connected to COM when the button is at rest. 3. **NO (Normally Open):** Connected to COM only when the button is pressed. ```mermaid graph LR COM --- NC(Rest State) COM -.-> NO(Pressed State) ``` --- ### 4. Common Applications * **Automotive:** Door latch sensing, seatbelt buckles, and gear shifters. * **Appliances:** Safety interlocks in microwaves or vacuum cleaners. * **Industrial:** Limit switches for small CNC machines or 3D printers. ---