The part number **D369-R69-NP0** typically identifies a high-performance micro-switch or a specific sub-component within the **Cherry (ZF Electronics) D3 series**. These switches are renowned for their reliability in industrial and automotive applications. ### 1. Technical Specifications Breakdown | Feature | Specification (Typical D3 Series) | | :--- | :--- | | **Switch Type** | Miniature Snap Action / Micro-switch | | **Actuator Style** | Usually a roller lever or simulated roller (R69 variant) | | **Current Rating** | Typically 0.1A to 16A (depending on voltage) | | **Contact Material** | Gold-plated (suggested by NP0 suffix for low current) | | **Terminal Type** | PCB Solder pins or Quick-connect | | **Operating Temp** | -40°C to +85°C / +125°C | --- ### 2. Nomenclature Analysis While specific suffixes can vary by region, the code generally breaks down as follows: * **D369**: The base series model. "D3" refers to the miniature size standard. * **R69**: Refers to the **Actuator**. In this case, it usually signifies a specific length of a roller lever or a specialized lever shape designed for cam-operated mechanical triggers. * **NP0**: Refers to the **Contact Configuration** and material. * **N**: Often signifies "Normally Open" or a specific terminal orientation. * **P0**: Usually indicates the electrical rating or gold-crosspoint contacts, which are essential for "dry circuit" applications (very low voltage/current) where oxidation must be prevented. --- ### 3. Key Applications Because of its high precision and snap-action mechanism, this part is found in: 1. **Automotive:** Door latch sensors, gear shifter position detection. 2. **Industrial:** Limit switches for CNC machinery or robotic arms. 3. **Appliances:** Safety interlocks for microwaves or washing machines. 4. **Medical:** Fluid pumps or positioning sensors in diagnostic equipment. --- ### 4. Circuit Diagram (Internal) The component functions as a Single Pole Single Throw (SPST) or Single Pole Double Throw (SPDT). ```mermaid graph LR A[Common] --- B(Spring Mechanism) B --> C[Normally Closed] B -.-> D[Normally Open] ``` ---