Good-Ark electronics

A Zener regulator is sized by its worst case, not its typical load. What a real low-power Zener specifies, and how the series resistor is chosen from those numbers.

A low clamping TVS is chosen by its clamping voltage at the fault current, not by breakdown voltage. What the datasheet rows mean and how the margin is checked.

Updated: October 28, 2026 An SMAJ TVS diode can be a useful rail protector when its voltage window and pulse capability match the disturbance. It should remain acceptably inactive during normal operation, clamp the defined transient low enough for the protected circuit, and survive the resulting current at its starting temperature. The familiar 400 W … Read more

Bidirectional TVS diodes clamp in both directions. What 600 W and 130 W parts really specify, and how standoff, clamping and capacitance decide the part.

Updated: October 28, 2026 A unidirectional surge-protection (TVS) diode clamps one polarity hard and behaves like a conventional diode the other way. It fits DC rails and signal lines with a defined polarity; AC or symmetric swings usually need bidirectional devices instead. How does a unidirectional TVS diode work? A TVS becomes conductive when transient … Read more

Load dump delivers hundreds of joules over tens of milliseconds. What ISO 16750-2 test A actually specifies, and why a 600 W TVS is not the answer.

A single-phase bridge rectifier module loses two forward drops in the output path. What 2 A and 1000 V ratings mean, and how surge and heat decide it.

A TO-220 Schottky rectifier is a two-die thermal problem: 1.6 °C/W per diode plus 0.15 °C/W of coupling. What that means for usable current.

A DFN Schottky rectifier trades leakage for a 410 mV forward drop in a 0.37 mm package. What the package, the leakage and the copper under it decide.

A three-phase diode bridge module is rated 40 A at an 85 °C case with 1600 V blocking and 4000 V RMS isolation. How cooling and surge decide it.

An ultrafast rectifier is chosen by recovery charge at your switching conditions, not the headline trr. How voltage, heat and softness decide the part.

Isolated power supplies explained: why isolation matters, which topologies suit which power level, and the design choices that decide safety and EMI.