The part number **11012-R** typically refers to specialized hardware components used in electrical and electronic assemblies. Depending on the manufacturer, it most commonly identifies high-retention **Battery Contacts** or specific **SMD/SMT Spacers**. Below is a detailed breakdown of the electronic specifications and applications associated with this part number. --- ### 1. Component Overview The most widely recognized "11012-R" in the electronics industry is a **Surface Mount (SMT) Threaded Spacer** or a **Battery Contact** component. | Attribute | Specification (Typical) | | :--- | :--- | | **Component Type** | SMT Threaded Standoff / Battery Leaf Spring | | **Material** | Phosphor Bronze or Brass | | **Plating** | Gold (R-suffix often denotes Gold) or Tin | | **Mounting Type** | Surface Mount (SMD) | | **Packaging** | Tape & Reel (indicated by -R) | --- ### 2. Technical Specifications While exact specs vary by manufacturer (such as *Keystone Electronics* or *Harwin*), the "R" suffix almost always signifies **Tape and Reel** packaging, which is essential for automated pick-and-place assembly lines. #### Mechanical Characteristics: * **Low Profile:** Designed for compact PCB layouts where vertical space is limited. * **Durability:** High fatigue resistance, especially if used as a battery contact or grounding clip. * **Solderability:** Features a large flat base surface to ensure a strong solder joint during reflow. #### Electrical Characteristics: * **Current Rating:** Typically ranges from **2A to 5A** depending on the contact surface area. * **Contact Resistance:** Low milliohm range (usually <30mΩ) to prevent voltage drops. --- ### 3. Common Use Cases These parts are foundational in consumer electronics and industrial PCB design: 1. **Battery Interconnects:** Used to connect coin cells (like CR2032) or AAA batteries to the PCB. 2. **Grounding/EMI Shielding:** Acting as a bridge between the PCB ground plane and a metal enclosure to reduce electromagnetic interference. 3. **PCB Stacking:** Serving as a threaded nut soldered directly to the board, allowing other boards or heat sinks to be screwed on without drilling holes. --- ### 4. Part Number Decoding In the electronics world, part numbers are often structured as follows: | Segment | Meaning | | :--- | :--- | | **11012** | The base model or series number (dimensions and shape). | | **-R** | **Reel:** Packaged on a 13-inch or 7-inch reel for automated assembly. | | **Alternative (-G)** | Often denotes Gold plating instead of Tin. | ---