Manufactured by NEC as part of the Super Capacitor range, their part number FZ0H223Z these are a 0.22F (that is Farad not microfarad) at 5.5V.
FR Series Supercapacitors, also known as Electric Double Layer Capacitors (EDLCs), are intended for high energy storage applications. Supercapacitors have characteristics ranging from traditional capacitors to batteries. As a result, supercapacitors can be used like a secondary battery when applied in a DC circuit.
Dimensions are 12.5mm diameter x 18mm high with pins at 5mm centers.
PRICED AND SUPPLIED EACH X1 - DISCOUNT FOR RESELLERS
AT A FRACTION OF THE USUAL DISTRIBUTORS PRICE
