california-jos-2-54mm-jumper-caps-30

Important Note

This entire repo was AI created - including all of the data within. The intent was to A) help me with my personal electronics inventory; and B) see how I could use AI to make that process a bit easier. DO NOT TRUST!

California JOS 2.54mm Black Jumper Caps Standard Circuit Board Shunts

Details

• Location: Cabinet-5, Bin 45, Section B
• Category: Connectors & Interconnects
• Brand: California JOS
• Model: 2.54mm Black Jumper Caps Standard Circuit Board Shunts
• Package: Individual pieces
• Quantity: 30+ pieces
• Status: Available
• Price Range: $8-12
• Product URL: https://a.co/d/hPFQKiv

Description

These California JOS 2.54mm black jumper caps are standard circuit board shunts designed to create short circuit connections between adjacent pins on pin headers. With the industry-standard 2.54mm (0.1 inch) pitch spacing, these jumper caps are essential components for circuit configuration, enabling/disabling functions, and creating electrical connections on development boards, prototypes, and production electronics. The black plastic construction provides durability while the internal metal contacts ensure reliable electrical connections.

Specifications

Physical Characteristics

• Pitch: 2.54mm (0.1 inch) standard spacing
• Color: Black plastic housing
• Contact Material: Tin-plated copper alloy (typical)
• Insulator Material: Durable plastic (typically nylon)
• Pin Spacing: Fits standard dual-row pin headers
• Profile: Low-profile design for compact installations
• Retention: Friction fit for secure connection

Electrical Characteristics

• Voltage Rating: 50V DC typical
• Current Rating: 1-3A typical (varies by contact design)
• Contact Resistance: Low resistance for reliable connections
• Insulation Resistance: High resistance between contacts and housing
• Operating Temperature: -40°C to +85°C typical
• Dielectric Strength: Suitable for low-voltage applications

Key Features

• Standard 2.54mm pitch for universal compatibility
• Black color for professional appearance
• Reliable friction-fit connection to pin headers
• Low-profile design minimizes space requirements
• Durable plastic construction for repeated use
• Internal metal contacts for electrical continuity
• Easy installation and removal for configuration changes
• Cost-effective solution for circuit jumpers

Image

Image needed: California JOS black jumper caps showing 2.54mm pitch and pin header compatibility.

Visual Description: These jumper caps appear as small black plastic rectangular blocks with internal metal contacts. They are designed to slide over two adjacent pins on a 2.54mm pitch pin header, creating an electrical bridge between the pins. The black plastic housing provides insulation and mechanical protection for the internal contacts.

Applications

Common use cases and applications for these components:

• Circuit board configuration jumpers
• Enable/disable function selection
• Development board option settings
• Prototype circuit connections
• Production electronics configuration
• Arduino and microcontroller projects
• PCB testing and debugging
• Signal routing and switching
• Hardware configuration selection
• Educational electronics projects

Configuration Examples

Common Jumper Applications:

• Power Selection: Choose between 3.3V or 5V operation
• Clock Source: Select internal or external clock
• Boot Mode: Configure boot from flash or bootloader
• Interface Selection: Choose UART, SPI, or I2C communication
• Feature Enable: Enable or disable specific circuit functions

Installation Patterns:

• Single Jumper: Connect two adjacent pins
• Multiple Jumpers: Configure multiple options simultaneously
• Temporary Connections: Easy removal for testing different configurations
• Permanent Settings: Long-term configuration in production units

Installation Instructions

Basic Installation:

1. Pin Header Verification: Ensure pin header has 2.54mm pitch spacing
2. Jumper Placement: Align jumper cap with desired pin pair
3. Connection: Press jumper cap firmly onto pins until seated
4. Verification: Check that jumper is fully seated and secure
5. Testing: Verify electrical continuity if needed

Removal and Replacement:

1. Gentle Removal: Use small pliers or fingers to pull jumper straight up
2. Avoid Side Forces: Pull directly upward to prevent pin damage
3. Repositioning: Move to different pin pairs as needed for configuration
4. Storage: Keep unused jumpers organized for future use

Technical Notes

Important technical considerations and usage tips:

• Pin Compatibility: Designed for standard 0.025” square pins
• Contact Pressure: Friction fit provides reliable electrical contact
• Repeated Use: Designed for multiple insertion/removal cycles
• Current Limitations: Verify current rating for specific applications
• Environmental: Suitable for indoor electronics applications
• Mechanical Stress: Avoid excessive side forces during installation
• Cleaning: Clean contacts if connection becomes unreliable
• Replacement: Replace if plastic housing cracks or contacts wear
• Documentation: Label jumper positions for complex configurations

Tags

jumper-caps, shunts, 2-54mm-pitch, circuit-board, pin-headers, configuration, short-circuit, california-jos cabinet-5 bin-45 section-b status-available

Notes

These California JOS 2.54mm jumper caps are essential components for any electronics workshop or development environment. Having 30+ pieces provides ample supply for multiple projects and allows for various configuration options on development boards and prototypes. The standard 2.54mm pitch ensures compatibility with the vast majority of pin headers used in electronics, from Arduino boards to custom PCBs. The black color provides a professional appearance while the durable construction ensures reliable performance through multiple configuration changes. Perfect for prototyping, development work, and production electronics where user-configurable options are needed.