The 2.54mm (0.1 inch) jumper cap is a small, manually-operated component used to complete or break an electrical circuit on a printed circuit board. Also known as a shunt, it consists of a conductive sleeve encased in an insulating plastic block, commonly used to configure hardware settings on motherboards, hard drives, and other PCBs.
✅ Specifications:
Model: Standard 2.54mm Jumper Cap
Pin Pitch: 2.54mm (0.1 inches)
Terminal Type: 2-pin shorting connector
Material: Plastic insulator; Phosphor Bronze contacts
Plating: Gold-over-Nickel (Au Over Ni)
Mechanical Life: Min. 100 cycles
Operating Temperature: -40°C to +105°C (varies by manufacturer)
📦 Features:
✔️ Insulating plastic body with conductive inner sleeve
✔️ Used to close or open part of an electronic circuit
✔️ Simple ON/OFF switching mechanism
✔️ Allows for quick hardware configuration changes
✔️ Top-opening design (open-top / closed-top variants available)
📦 Applications:
✔️ Configuring motherboard CPU or memory settings
✔️ Setting master/slave mode on IDE hard drives
✔️ Modifying hardware settings on PCI/ISA interface cards
✔️ Changing options on optical drives
✔️ Prototyping with Arduino/Raspberry Pi projects
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