5.6 V Zener, 1 W — where this part sits in the cycle
The 1N4734P/TR12 is a 5.6 V Zener diode rated for 1 W continuous dissipation in the standard DO-204AL (DO-41) axial-lead package. The 1 W power rating means the junction stays within limits when the diode conducts its rated current at the Zener voltage — at 5.6 V, 1 W corresponds to roughly 178 mA continuous.
The Tape & Reel packaging suits automated pick-and-place for through-hole insertion, though the axial form factor typically requires a formed-lead process or hand-insertion for low-volume runs.
Maximum impedance (Zzt) is 5 Ohms — this is the dynamic resistance at the test current. A lower Zzt means better line regulation: a 10 mA change in current shifts the Zener voltage by only 50 mV. The 5 Ohm figure is typical for a 5.6 V, 1 W Zener; higher-voltage Zeners in the same family have higher impedance. Reverse leakage is specified at 10 µA max at 2 V reverse bias — well below the Zener threshold, so the diode draws negligible current in the off state. Forward voltage drop is 1.2 V max at 200 mA, consistent with a silicon junction in the DO-41 package.