F721A108MMCAQ2 Tantalum Cap

Hi everyone,

I’m working on a small electronics project and I’m considering using the F721A108MMCAQ2, a 1000 µF / 10 V surface-mount tantalum capacitor, for the power rail decoupling / smoothing on my board. According to the specs, it has a low ESR (around 0.14 Ω) and decent ripple-current rating, which sounds good for stabilizing voltages when driving sensors or small modules. 

What I like about this cap is that it’s SMD and relatively compact (7.2 mm × 6.0 mm × 2.0 mm), so it won’t take too much space on my PCB. Because of its 1000 µF value, it should help smooth out dips or surges on the supply line if my load draws varying current, maybe better than a small 10 µF or 47 µF cap.

Here’s what I plan: use the F721A108MMCAQ2 near the input of my power rail (after voltage regulation), then maybe add a smaller ceramic bypass cap nearby to catch high-frequency noise.

Since I’m not super experienced, I’d like to ask for your advice:

Has anyone used F721A108MMCAQ2 (or similar large tantalum SMD caps) in a small-scale board? Did it help stabilize the supply and reduce noise / voltage dips?

Do you recommend pairing it with a smaller ceramic or film cap for better high-frequency filtering?

Any tips for layout when using an SMD cap like this, grounding, trace width, power-input decoupling, etc.

If you’ve tried something like this, I’d love to hear how it worked out. Thanks in advance!