T540B226K010CH8510WAFL

Operating Temperature:	-55°C ~ 125°C
Features:	High Reliability
Ratings:	COTS
Manufacturer Size Code:	B
Lead Spacing:	--
Height - Seated (Max):	0.083" (2.10mm)
Size / Dimension:	0.138" L x 0.110" W (3.50mm x 2.80mm)
Package / Case:	1411 (3528 Metric)
Mounting Type:	Surface Mount
Lifetime @ Temp.:	2000 Hrs @ 125°C
Series:	KO-CAP® T540
ESR (Equivalent Series Resistance):	80 mOhm @ 100kHz
Type:	Molded
Voltage - Rated:	10V
Tolerance:	±10%
Capacitance:	22µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tray - Waffle

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Tantalum – Polymer CapacitorsTantalum – polymer capacitors are composed of a layer of dielectrics, mainly of tantalum pentoxide, on a tantalum metal substrate, along with a polymer electrolyte, generally polyethylene oxide, sandwiched between the dielectric layer and a second layer of metal, usually aluminum or another metal. These capacitors offer mechanical stability, low ESR, low leakage current and an extremely reliable solution to store energy. They are commonly used in consumer electronics, medical, military and avionics applications where low ESR is desired.The T540B226K010CH8510WAFL is a tantalum-polymer E-cap capacitor featuring a high temperature rating of 85°C (using methane-sulphonate electrolyte) and a low ESR value of 5mΩ at 100kHz. This model packs a tantalum electrolytic capacitor, with a maximum rated voltage of 10 volts and an insulation resistance of 16 GΩ. When it comes to applications and working principle, the T540B226K010CH8510WAFL capabilities are responsible for its frequent choice for use in a range of power supply designs. More specifically, it is used in multiple applications, particularly in current-limited high frequency switching power supplies, boost cap in low-power applications, back-up power supplies, output capacitors for MCUs, LDO regulators, and frequency converters, or vibration-resistant devices.The physical look of the T540B226K010CH8510WAFL is thinner than the traditional tantalum capacitor, allowing for greater space-saving possibilities. The high temperature rating is ideal for operation in high temperature environments, while its overall effectiveness is further complimented by a low ESR value.In terms of its working principle, the entire device can be viewed as two back-to-back capacitors in series with some minor differences. On one side, a tantalum oxide-polymer electrolyte and a Tantalum Outer Electrode (TOE) form a T-cap. On the other side, a thin dielectric layer and an Aluminum Inner Electrode (AIE) form a low-ESR ceramic capacitor. The capacitor’s effective capacitance is determined by the polymer thicknes, while its overall effectiveness is limited by the dielectric layer. The T540B226K010CH8510WAFL offers fast and low-impedance discharging due to its high capacitance and low-ESR, which benefits switching power supplies.It is important to note that tantalum-polymer capacitors do have some limitations compared with their traditional counterparts. Due to their construction method, they are prone to forming short circuits, hence it is advised to keep them away from cold temperatures, moisture, and solder flux residues. Furthermore, the polymer layer has a tendency to dry out under certain conditions, increasing the ESR and reducing the capacitance.In conclusion, the T540B226K010CH8510WAFL is an ideal choice for applications requiring a low ESR and an higher capacitance in comparison with traditional capacitors. It is used in current-limited high frequency switching power supplies, boost cap in low-power applications, back-up power supplies, output capacitors for MCUs, LDO regulators, frequency converters, and vibration-resistant devices. It can provide fast and low-impedance discharging due to its high capacitance and low-ESR. Despite of the positives, tantalum-polymer capacitors do have some limitations, compared with their traditional counterparts, so it is important to keep them away from cold temperatures, moisture, and solder flux residues.

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