The part number **7107L41CWCKE22** refers to a specific configuration of a subminiature toggle switch manufactured by **C&K** (now part of Littelfuse). Below is a detailed breakdown of the technical specifications and the nomenclature of this part. --- ### 1. Technical Specifications Table | Feature | Specification | | :--- | :--- | | **Manufacturer** | C&K (Littelfuse) | | **Series** | 7000 Series | | **Switch Function** | SPDT (Single Pole Double Throw) | | **Switching Operation** | ON-OFF-MOM (Momentary) | | **Contact Rating** | 0.4 VA max @ 20 V AC or DC (Low Logic Level) | | **Mounting Type** | Through-hole, Right Angle (Vertical) | | **Actuator Length** | 13.49mm (.531") | | **Operating Temp** | -30°C to 85°C | | **Sealing** | IP67 (Dust tight, Waterproof) | --- ### 2. Part Number Breakdown Each segment of the part number identifies a specific physical or electrical characteristic: | Code Segment | Description | Meaning | | :--- | :--- | :--- | | **7107** | Model/Function | SPDT, Function: ON-OFF-MOM | | **L41** | Actuator Style | Lever handle, 0.531" high with anti-rotation feature | | **CW** | Bushing Style | Threaded, 0.250" high, with internal O-ring seal | | **CK** | Terminations | PC Thru-hole, Vertical Right Angle | | **E** | Contact Material | Gold over Nickel (suitable for low-level logic) | | **2** | Seal/Finish | Epoxy terminal seal (standard) | | **2** | Actuator Color | Black (standard color code) | --- ### 3. Key Electronic Characteristics * **Gold Contacts (Code E):** Because this switch uses gold-plated contacts, it is designed for "dry circuit" applications. It has a very low contact resistance, making it ideal for microprocessors and logic-level signals where high voltage/current isn't present to "burn off" oxidation. * **Momentary Action:** The "7107" designation indicates that one position is momentary. This means the switch will spring back to the center "OFF" position after being toggled to the "MOM" side. * **Environmental Protection:** The **CW** bushing and **IP67** rating mean this switch is internally sealed. It is protected against the ingress of dust and can withstand temporary immersion in water, making it suitable for harsh industrial or outdoor environments. --- ### 4. Typical Applications * Telecommunications equipment * Medical instrumentation * Handheld electronic devices * Industrial control panels (where moisture resistance is required)