1N4734 5.6V 1W Zener Diode – Jaycar Electronic Component

That 5.6V rail needs a reference that won't drift. The 1N4734 is a 1-watt Zener diode that pins the voltage where your schematic says it should be — no more, no less. Drop it into the circuit you're building or replace the one that's let go. Jaycar component. Spec matches, job done

• Zener voltage: 5.6V
• Power rating: 1 watt
• Part number: 1N4734
• Brand: Jaycar
• Use: voltage regulation and circuit protection