Good-Ark electronics

The GSMDJ Series is designed for surge and transient-voltage protection in power and electronic circuits. It helps clamp harmful voltage spikes before they reach sensitive components, supporting dependable operation in industrial equipment, power supplies, automotive electronics, communications hardware, and renewable-energy systems. Correct selection depends on working voltage, clamping voltage, surge capability, package, polarity, and circuit … Read more

A low leakage small signal diode is a low-current semiconductor device engineered to minimize reverse current while switching, steering, clamping, or protecting sensitive signals. It helps preserve accuracy in battery-powered, high-impedance, analog, and fast digital circuits by reducing unwanted current flow, voltage drift, standby drain, and measurement error. Last updated: October 11, 2026 Key Takeaways … Read more

Updated: October 28, 2026 Discrete power devices are semiconductor components used to switch, rectify or protect the flow of electrical power. Examples include power diodes, MOSFETs, IGBTs and thyristors. They work alongside controller chips and passive components in chargers, motor drives and power supplies, where their losses and operating limits affect heat, efficiency and reliability. … Read more

Updated: October 27, 2026 Choose a MOSFET for a switching supply from bus voltage, current waveform, switching frequency, gate-drive voltage, and package thermal path—not from the lowest 25 °C RDS(on) alone. Map voltage class, conduction vs switching loss, gate charge, and package limits. Broader map: power MOSFET selection guide. Polarity: N-channel vs P-channel. Secondary diodes: SMPS … Read more

A switching power supply EMI filter design reduces conducted noise, improves EMC compliance, and protects the power line from switching spikes. The best design starts by identifying whether the noise is differential mode or common mode, then choosing the right LC, pi, or common-mode choke network, and finally validating the result with measurement and layout … Read more

A SOT-23 bipolar transistor fixes footprint, pinout, thermal path and marking. How the outline sets usable current, and when to move to a smaller package.

SOT-23 is a package, not a specification: the same 100 V, 4 ns switching silicon ships in six outlines. What the outline decides, and what it does not.

CAN bus ESD protection is a capacitance budget first: a two-line part must clamp 30 kV and still add only 25 pF per line. What the numbers decide.

A multi-line ESD array is chosen by per-line capacitance and channel count, not by package size. What three real arrays specify, and where each one belongs.

Learn how to select an SOD-523 ESD protection diode with verified package dimensions, TVS polarity, capacitance, voltage ratings and PCB layout checks.