5.1 V regulation at 1 W
The 1N4733P/TR8 is a 5.1 V Zener diode rated for 1 W continuous power dissipation in a DO-204AL (DO-41) axial-lead package. The 5.1 V nominal breakdown voltage with ±10% tolerance means the actual Zener voltage falls between 4.59 V and 5.61 V — a band wide enough for general-purpose shunt regulation or overvoltage clamping but not tight enough for precision references without post-trim. Maximum impedance (Zzt) is 7 Ohms at the test current, so the regulation slope is moderate — expect the output voltage to shift roughly 7 mV per mA of load change.