5.1 V regulation at 1 W — DO-41 axial
The 1N4733E3/TR13 is a 5.1 V Zener diode rated for 1 W continuous power dissipation in the standard DO-204AL (DO-41) axial-lead package. The 5.1 V nominal voltage with ±10% tolerance means the regulation window spans 4.59 V to 5.61 V — a typical choice for clamping logic supply rails or providing a reference for low-voltage analog circuits.
Parametric fit for voltage reference and clamping
Maximum Zener impedance is 7 Ohms (Zzt), which sets the regulation accuracy under varying bias current — lower impedance means tighter voltage stability as the load changes. Reverse leakage is specified at 10 µA maximum at 1 V reverse, confirming the diode blocks well below the Zener knee for standby or protection circuits.
Tape & Reel for automated assembly
The /TR13 suffix denotes Tape & Reel packaging, intended for pick-and-place or automated insertion equipment. The through-hole DO-41 body with axial leads is a standard footprint — the lead spacing and body diameter match the industry-common DO-204AL outline, so existing PCB layouts for 1N4733-family diodes accept this part without board changes.