Active production — 5.1 V regulation at 1 W
The 1N4733CE3/TR13 is a 5.1 V Zener diode in Microchip Technology's 1N4733 series, rated for 1 W continuous power dissipation. The ±2% tolerance on the nominal voltage means the regulation point stays between 4.998 V and 5.202 V across the operating range — tight enough for a 5 V rail clamp or a reference in a low-precision ADC front-end. The tape-and-reel packaging suits automated insertion for volume builds.
Thermal and leakage profile
Reverse leakage is specified at 10 µA max at 1 V reverse bias — a low enough draw that the diode does not load a high-impedance bias network. Maximum Zener impedance (Zzt) is 7 Ohms at the test current, which keeps the dynamic voltage shift small under varying load current. Forward voltage is 1.2 V max at 200 mA, typical for a silicon junction at this current density.