Based on the part number **0156-R**, this typically refers to a high-quality **Spring-Loaded Pogo Pin** or a specialized **Banana Plug/Connector** component, often manufactured by companies like **Everett Charles Technologies (ECT)** or **Pomona Electronics**. --- ### 1. General Specifications While specifications can vary slightly by the specific manufacturer series, the "0156" family generally follows these parameters: | Feature | Typical Specification | | :--- | :--- | | **Component Type** | Spring Contact Probe / Connector | | **Material** | Beryllium Copper or Brass (Gold Plated) | | **Current Rating** | 3A to 15A (Depending on application) | | **Mounting Type** | Solder or Press-fit | | **Temperature Range** | -55°C to +150°C | --- ### 2. Common Variations of "0156-R" #### A. The Pogo Pin (Spring Probe) In the context of PCB testing (ICT - In-Circuit Testing), the 0156-R is often a **series designation** for a probe. * **The "R" Suffix:** Usually denotes a **Receptacle**. This is the housing that stays soldered to the test fixture, allowing the spring probe itself to be replaced easily when it wears out. * **Application:** Used in "Bed of Nails" testers to check electrical continuity on circuit boards. #### B. The Banana Plug (Pomona 0156 Series) If the part is a larger connector, it refers to a **Do-It-Yourself (DIY) Solderless Banana Plug**. * **Design:** Features a "recessed" screw or a specific tip style. * **Function:** Allows for quick connection of wires to lab equipment without professional soldering tools. --- ### 3. Technical Advantages 1. **Low Contact Resistance:** Gold plating ensures minimal signal loss, which is critical for precision measurements. 2. **Durability:** Designed for thousands of cycles (compressions/connections). 3. **Ease of Maintenance:** The use of a receptacle (R) means the entire test fixture does not need to be desoldered if a single pin fails. --- ### 4. Identification Table If you are looking for a replacement, check these physical attributes: | Attribute | Visual Indicator | | :--- | :--- | | **Tip Shape** | Pointed, Chisel, or Flat | | **Body Finish** | Gold or Nickel plated | | **Connection** | Wire wrap, Solder cup, or Crimp | ---