Ideal Diode Breakout

Jargon buster

Plain-language definitions for the technical terms used above.

breakout

A breakout board carries a small or fine-pitched component and brings its connections out to standard, breadboard- and header-friendly pins. Describing a part as a breakout means it can be wired into a project without soldering directly to the component's tiny contacts.

DC

DC means direct current, where electricity flows in one constant direction, as supplied by batteries, USB ports and many plug-pack power supplies. When a product specifies DC, it runs from a DC supply rather than mains AC, so you need to provide the correct voltage and polarity.

Forward voltage drop

Forward voltage drop is the small amount of voltage lost across a diode or diode-like circuit when current flows through it. A lower drop is important because it wastes less power and helps keep the rest of the project supplied with enough voltage.

Hot-swap

Hot-swap (or hot-swapping) means connecting, disconnecting or replacing a component such as a power source, battery, drive or module while the rest of the system keeps running. It matters where equipment must stay operational without being powered down, and for power supplies it often needs extra circuitry to manage the inrush current or voltage dips that a swap can cause.

Ideal diode

An ideal diode circuit lets current flow one way like a normal diode, but with much less voltage loss. This matters in power-selection or backup-power projects because less voltage is wasted as heat and more reaches your device.

Leakage current

Leakage current is a small unwanted current that flows through insulation, components, or semiconductor inputs even when ideally no current should flow. Very high-value resistors can be used to detect or limit these tiny currents in sensitive circuits.

On resistance

On resistance is the effective resistance of a switch or diode-like circuit when it is turned on. Lower on resistance means less voltage drop and less heating when powering higher-current loads.

over-voltage protection

Over-voltage protection is a safety feature that shuts down or limits the circuit if the input or output voltage becomes too high. It matters because excessive voltage can damage both the power supply and the device being tested.

Power dissipation

Power dissipation is electrical energy being turned into heat inside a component. It matters because too much heat can reduce efficiency, affect reliability, or require a larger component or better cooling.

Reverse blocking

Reverse blocking is the ability to stop current flowing backwards from a load or one power source into another. It matters in systems with multiple supplies because it helps prevent backfeeding, battery drain, or damage during switchover.

Reverse leakage current

Reverse leakage current is the small unwanted current that flows backwards through a diode or switch when it is meant to be blocking. Lower leakage is useful for battery-powered and power-selection circuits because it reduces wasted energy and helps stop one supply feeding back into another.