Devices in this family span from 5 to 440 volts with unidirectional and bidirectional versions for each device and include the SMAJE22AH, which features a 35.5 V clamping voltage with 11.3 A I pp (Figure 11). All devices in the series are housed in surface-mount plastic packages measuring 3.0 × 4.65 × 2.44 mm (maximum) and meeting the UL 94 V-0 flammability rating (Figure 11).
Conclusion Electrical transients from static electricity, motor startup, or nearby lightning can damage electronic systems and their components. TVS diodes respond to these overvoltages almost instantaneously and divert the transient voltage and energy to ground, thus protecting the system. As shown, Eaton offers various series of TVS diodes, each series comprising numerous devices rated at different voltages to match the anticipated transient- voltage magnitude, end-product constraints, and regulatory mandates while requiring only a few square millimeters of circuit- board real estate.
Figure 11: The SMAJE22AH 35.5 V TVS diode is qualified to automotive standards as called out by AEC-Q101; it also uses plastic packaging that meets the UL 94 V-0 flammability rating standard. (Image source: Eaton)
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