1500 W peak pulse power in a hermetic SQ-MELF
The 1N6169AUS is a bidirectional Zener TVS diode from Microchip Technology, rated for 1500 W (1.5 kW) peak pulse power under the 10/1000 µs waveform. That power rating, combined with a hermetic SQ-MELF C package, makes it a candidate for high-reliability circuit protection in avionics, defense, and industrial power supplies where transient energy must be clamped without package failure.
98.8 V standoff, 178.8 V clamp — the protection window
The reverse standoff voltage is 98.8 V typical, meaning the diode draws negligible leakage below that rail. Breakdown starts at 123.5 V minimum, and the clamping voltage peaks at 178.8 V at the rated peak pulse current of 8.4 A. For a 100 V DC bus or a 120 V AC line, this window keeps the protected circuit below destructive overvoltage while avoiding nuisance conduction during normal operation.
Active production, hermetic package for harsh environments
The SQ-MELF C package is a hermetic ceramic surface-mount form factor, suited for high-reliability programs requiring MIL-STD screening. The junction temperature range spans -55°C to 175°C, covering military and downhole thermal extremes.
Bidirectional single-channel protection
With one bidirectional channel, this diode clamps both positive and negative transients symmetrically — useful on AC signal lines, differential data pairs, or ungrounded DC rails where polarity is not fixed. The SQ-MELF footprint is compatible with standard surface-mount assembly processes, though the hermetic body may require reflow profile adjustments compared to plastic packages.