What Is a Voltage Regulator Zener Diode?
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.
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600 W TVS Ratings: Pulse Waveform, Temperature and Derating
Understand 600 W TVS ratings: compare pulse waveforms, temperature derating and part-specific leakage, then check clamping and load-dump conditions.
1500 W TVS Ratings: Pulse Energy and Protection Coordination
Understand 1500 W TVS ratings, calculate pulse energy from voltage and current, and check clamping, temperature, repetition and protection coordination.
Low Capacitance ESD Diode: Protecting High-Speed Signal Integrity in Modern Electronics
A low capacitance ESD diode keeps 3.5 pF off a high-speed line. Why 45 pF parts are wrong there, and how capacitance, clamping and IEC levels decide.
USB ESD Protection Diodes: Selection, Pin Mapping and PCB Layout
Updated: October 28, 2026 USB ESD protection must clamp each pin without ruining the eye diagram: pick VRWM above the pin’s normal voltage, keep capacitance inside the USB generation’s budget, and place the diode on the connector side of series elements with a short, wide return to the shield/chassis reference. Data pins, CC/SBU pins on … Read more
What Is a Low Clamping Voltage TVS?
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.
SMBJ TVS Diodes: Package, Polarity and 24 V Rail Selection
An SMBJ TVS diode is a 600 W part in a DO-214AA body with a 5-188 V standoff range. How the rating, the CA bidirectional option and clamping decide fit.
Is an SMAJ TVS Diode the Right Surge Protector for Your Design?
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
SMCJ TVS Diodes: Package, Clamping and Device Selection
An SMCJ TVS is a 1500 W class part in a DO-214AB body. What the power class, 5-495 V standoff range and 200 A surge rating actually allow in a design.
What is a bidirectional surge protection diode and how does it work?
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.
What Is a Unidirectional TVS Diode? Working, Polarity and Selection
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
How do TVS diodes solve automotive load dump issues?
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.