15 V zener — regulation and clamping fit
The 1N4744APE3/TR8: Nominal zener voltage is 15 V at the test current, with a ±5% tolerance window — the part holds regulation between 14.25 V and 15.75 V over the full operating temperature range of -65°C to 150°C. Maximum power dissipation is 1 W, so the steady-state zener current at 15 V is limited to about 66 mA before the junction temperature rise needs derating — the DO-204AL (DO-41) axial lead body relies on the PCB copper and airflow to shed that heat. Maximum zener impedance (Zzt) is 14 Ohms at the test current — a lower impedance means tighter voltage regulation under varying bias, which matters when the diode is used as a shunt reference or a low-power clamp.
Supplied in Tape & Reel (TR) packaging, the through-hole DO-204AL (DO-41) axial body suits automated insertion or hand assembly — the reel format is standard for volume pick-and-place with axial feeders.