The **MHO+68TGG-R** is a specific part number typically associated with a **DIP (Dual In-line Package) Socket**, specifically a high-quality "machined pin" or "turned pin" IC socket. These are used to provide a reliable electrical connection between an Integrated Circuit (IC) and a Printed Circuit Board (PCB) while allowing for easy replacement. --- ### 1. Key Technical Specifications | Feature | Specification | | :--- | :--- | | **Number of Positions** | 68 Pins | | **Pin Style** | Machined / Turned Pin (Round) | | **Pitch** | 2.54mm (0.1 inch) Standard | | **Contact Material** | Beryllium Copper or Phosphor Bronze | | **Plating** | Gold (G) or Tin (T) - often selective plating | | **Mounting Type** | Through-hole (THT) | | **Row Spacing** | Large format (usually 0.600" / 15.24mm or 0.900") | --- ### 2. Breakdown of Part Characteristics * **Machined Pins (The "M" and "TGG"):** Unlike stamped-contact sockets, machined sockets use a solid brass outer sleeve and a multi-finger inner contact. This provides a much more secure and vibration-resistant connection. * **68-Pin Configuration:** This is a high pin-count socket. It is frequently used for legacy microprocessors, large memory chips, or specialized PLCC/PGA adapters. * **Gold Plating (G/GG):** The "G" in the suffix usually denotes gold plating on the contact area. Gold is preferred for low-signal applications because it does not oxidize, ensuring long-term conductivity. * **RoHS Compliance (-R):** The "-R" suffix typically indicates that the part is compliant with **RoHS** (Restriction of Hazardous Substances) standards, meaning it is lead-free. --- ### 3. Common Applications * **Prototyping:** Allows for the swapping of expensive ICs without soldering/desoldering. * **Maintenance:** Used in industrial equipment where high-wear components might need periodic replacement. * **Programming:** Often found on universal programmers or adapter boards for 68-pin chips. --- ### 4. Schematic Footprint Reference ```c // Example Layout Definition .__________________________. | 1 68| | 2 67| | 3 (Inner Space) 66| | ... ... | | 34 35| '--------------------------' ```