## Electronic Component Analysis: A107K1CWCQ0Q The part number **A107K1CWCQ0Q** corresponds to a specific configuration of a **Subminiature Toggle Switch** manufactured by **Electroswitch** (frequently used in industrial and instrumentation applications). --- ### 1. Part Number Breakdown To understand the electronics of this part, we must decode the alphanumeric string based on the manufacturer's series specifications: | Segment | Code | Description | | :--- | :--- | :--- | | **Series** | **A** | Subminiature Toggle Switch Series | | **Poles** | **107** | SPDT (Single Pole Double Throw) - ON-OFF-ON | | **Actuator** | **K1** | Locking Lever (Safety feature to prevent accidental switching) | | **Bushing** | **CW** | Splash-proof / Threaded Panel Mount Bushing | | **Terminals** | **C** | Printed Circuit (PC) Pin terminals | | **Contacts** | **Q** | Silver contacts (High power rating) | | **Sealing** | **0Q** | Standard Epoxy seal | --- ### 2. Technical Specifications The electrical characteristics are defined by the "Q" contact material (Silver), which is designed for power circuits rather than low-level logic. | Parameter | Specification | | :--- | :--- | | **Contact Rating** | 6 Amps @ 125 VAC or 3 Amps @ 250 VAC | | **Electrical Life** | 50,000 make-and-break cycles at full load | | **Contact Resistance** | 10 milliohms max. initial @ 2-4 VDC | | **Insulation Resistance** | 1,000 Megohms min. | | **Dielectric Strength** | 1,000 V RMS @ sea level | | **Operating Temp** | -30°C to +85°C | --- ### 3. Key Electronic Features #### A. The "Locking Lever" (K1) This is the most critical mechanical/electronic safety feature. The lever must be pulled upward before it can be moved to another position. This prevents the circuit from being toggled due to vibration or accidental bumps. #### B. SPDT ON-OFF-ON Logic This switch has three positions: 1. **Position 1:** Terminal 1 connected to Common (Center). 2. **Position 2 (Center):** All circuits open (OFF). 3. **Position 3:** Terminal 3 connected to Common (Center). #### C. Environmental Sealing (CW) The "CW" designation indicates an internal O-ring in the bushing. This protects the internal electrical contacts from moisture, oil, and dust, making it suitable for harsh environments. --- ### 4. Typical Applications * **Industrial Control Panels:** Where accidental activation could cause machinery damage. * **Medical Equipment:** For mode selection that requires a deliberate user action. * **Marine Electronics:** Due to the splash-proof bushing and silver corrosion-resistant contacts. * **Avionics:** Used in cockpits for critical system toggles.