Components #

Breadpad provides a comprehensive library of electronic components for circuit design and SPICE simulation. Each component is carefully modeled to provide accurate results while maintaining ease of use.

Available Components #

Passive Components #

• Resistor - Fixed resistance with temperature coefficients
• Capacitor - Energy storage with dielectric modeling
• Inductor - Magnetic energy storage with parasitics

Semiconductor Devices #

• Diode - PN junction with full SPICE parameters
• Transistor - BJT, MOSFET, JFET support

Integrated Circuits #

• Chip - Custom ICs from 8-48 pins with subcircuits

Sources & Connections #

• Voltage Source - DC, AC, PWM, and modulated signals
• Wire - Realistic wire modeling with resistance
• Transmission Line - Distributed RLC for high-frequency

Component Features #

Standard Features (Free) #

• Basic component placement and editing
• DC analysis support
• Simple parameter adjustment
• Visual breadboard representation

Premium Features #

• Temperature coefficients (TC1, TC2)
• Manufacturing tolerance for Monte Carlo
• Advanced source types (PWM, FM, AM)
• Parasitic element modeling
• Custom IC subcircuit import

SPICE Accuracy #

All components generate industry-standard SPICE netlists compatible with:

• ngspice (used by Breadpad)
• LTspice
• PSpice
• Most SPICE3-compatible simulators

Getting Started #

1. Select a component from the toolbox
2. Place on breadboard by tapping tie points
3. Tap the component to edit its parameters
4. Connect with wires to build your circuit
5. Run analysis to see results

Tips for Success #

• Start simple and add complexity gradually
• Use appropriate wire colors for clarity
• Check component orientations (especially diodes, transistors)
• Add bypass capacitors for ICs
• Consider tolerances for real-world accuracy