Jaycar 1N4739 Zener Diode – 9.1V, 1W

The schematic says 9.1V and you're done scrolling through listings that list the wrong part number or a different wattage. This is the 1N4739 — 9.1V breakdown, one watt, Jaycar-sourced. It's the component your board actually needs, not a 'similar' alternative. Grab it and get the build finished this week

• 9.1V Zener breakdown voltage for accurate regulation and clamping
• 1W continuous power rating for dependable sustained use
• Part number 1N4739 — direct match to your component list
• Jaycar-sourced component, stocked in Australia