5.6 V shunt regulation in a DO-41 axial lead
The 1N4734E3/TR13 is a 5.6 V Zener diode from Microchip Technology, rated for 1 W continuous power dissipation in the DO-204AL (DO-41) axial-lead package. The 5.6 V nominal breakdown voltage with ±10% tolerance makes it a straightforward choice for low-voltage rail clamping, shunt regulation, or as a reference in a bias network — the 5 Ohm maximum Zener impedance (Zzt) keeps the voltage shift under a few hundred millivolts across the rated current range.
Temperature range and thermal budget
The 1 W power limit in the DO-41 body means the junction-to-ambient thermal path relies on the lead length and board copper — derate above 25°C ambient per the standard Zener derating curve. The 1.2 V forward drop at 200 mA (If) is typical for the silicon die; reverse leakage is 10 µA max at 2 V reverse bias, confirming the breakdown knee is sharp enough for most regulator circuits.
Active lifecycle and reel format
The TR suffix indicates Tape & Reel packaging, which feeds automated pick-and-place for through-hole insertion (the reel holds the axial leads taped per EIA-296). Sourced to order against BOM quantities; availability and current pricing confirmed at RFQ.