Transient suppression for general-purpose DC rails
The 1.5SMC22CA M6G: The bidirectional construction (one device, two back-to-back Zener junctions) means polarity does not matter — it clips positive and negative surges symmetrically. That simplifies BOM placement on AC-coupled or floating signal lines where the polarity relative to ground is not fixed.
Parametric envelope and package fit
Breakdown voltage (min) is 20.9 V, so the device starts conducting in avalanche at roughly 21 V and hard-clamps at 30.6 V. The 18.8 V standoff rating is the maximum continuous DC voltage the TVS can sit across without degrading — a 15 V rail with 10 % tolerance (16.5 V max) stays well below that threshold. It is rated for the full 1500 W pulse without derating at 25 °C ambient; above 25 °C the peak power must be derated per the thermal impedance curve. The junction temperature range of -55 °C to 150 °C covers industrial and outdoor equipment without restriction.
Lifecycle and supply posture
The Tape & Reel packaging (TR) suits automated pick-and-place assembly in volume production.