47 V zener — regulation and clamping in a DO-35 body
The 1N6016C is a 47 V zener diode from Microchip Technology with a nominal voltage tolerance of ±2%, meaning the zener voltage stays between 46.06 V and 47.94 V across the operating range — tight enough for rail clamping or voltage reference duty where a standard ±5% part would drift outside the window. Rated for 500 mW continuous power dissipation in free air, this part handles shunt regulation or transient clamping at currents up to roughly 10 mA before the junction temperature climbs past the derating curve. The 170 Ohm maximum zener impedance (Zzt) at the test current means line regulation is moderate — a change in bias current shifts the regulation point more than a low-impedance reference diode would.
DO-35 axial — board integration and temperature range
The glass body provides hermetic sealing, which together with the -65°C to +175°C operating temperature range makes this diode suitable for environments where epoxy-molded parts would absorb moisture or crack under thermal cycling — avionics, downhole instrumentation, or engine-bay electronics where the ambient regularly exceeds 125°C. Reverse leakage is specified at 100 nA maximum when 36 V is applied across the junction — a useful sanity check during incoming inspection: a part that draws significantly more at this test voltage likely has junction damage or contamination. Forward voltage drop is 1.1 V maximum at 200 mA, typical for a silicon zener of this voltage class.