Active production — 11 V zener in a DO-35 can
The 1N6001C is an active-production 11 V zener diode from Microchip Technology, rated for 500 mW continuous dissipation in the standard DO-35 axial-lead package. The ±2% tolerance on the nominal 11 V zener voltage means the regulation point stays tight across the operating temperature range of -65°C to 175°C — useful when the reference rail feeds an ADC or comparator that can't tolerate a sloppy clamp.
500 mW dissipation and what it buys you
At 500 mW max power, the 1N6001C handles shunt regulation or transient clamping in low-power rails without needing a heatsink. The 18-ohm maximum zener impedance (Zzt) at the test current keeps the dynamic voltage shift small as the load current varies. Reverse leakage is specified at 100 nA max when biased at 8.4 V — well below the zener knee, confirming the junction is clean and the breakdown is sharp. Forward voltage drop is 1.1 V max at 200 mA, typical for a silicon junction in this current class.