The STD4N90K5: These numbers set the drive current required at the switching frequency: a 100 kHz switching rate draws roughly 0.53 mA from the gate driver for charging alone, well within a standard driver's capability. The low Qg and Ciss make this device suitable for moderate-speed switching in flyback converters and auxiliary power supplies. The gate threshold voltage is 5 V maximum at 100 µA drain current, with a recommended drive voltage of 10 V for minimum on-resistance. The gate-source rating is ±30 V, giving headroom for overshoot in hard-switched topologies.
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The operating junction temperature range spans -55 °C to +150 °C, covering industrial and some automotive under-hood environments.