Jaycar 3.3µF 50V Bipolar Electrolytic Capacitor (Non-Polarised) – RB Series

Your circuit calls for 3.3µF and you'd rather not hunt for a polarised part just to double-check the orientation under the scope. This bipolar cap takes either lead. 50V rating, 25mA ripple, two anodes in series. It's the value that slots cleanly into mid-range audio coupling, smoothing stages, or timing networks where you need a touch more capacitance without the polarity headache

• 3.3µF capacitance, 50V working voltage
• Non-polarised (bipolar) construction — connect either way
• Two anodes connected in series for stable operation
• Ripple current rating: 25mA
• RB electrolytic series
• Suited to audio coupling, smoothing stages, and timing networks