THJB225M025RJN

Operating Temperature:	-55°C ~ 175°C
Failure Rate:	--
Features:	General Purpose
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), 1210
Mounting Type:	Surface Mount
Lifetime @ Temp.:	--
Series:	THJ
ESR (Equivalent Series Resistance):	4.5 Ohm
Type:	Molded
Voltage - Rated:	25V
Tolerance:	±20%
Capacitance:	2.2µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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Introduction to Tantalum Capacitors

Tantalum capacitors are a type of highly reliable, long life passive component that finds applications in many electronic devices such as computers, mobile phones, laptops, and so forth. Tantalum capacitors are made of tantalum powder, which is pressed and sintered into a pellet, then encased in a cylindrical aluminum can or tantalum-oxide case.

Working Principle of Tantalum Capacitors

Tantalum capacitors work as a regular capacitor does, by storing energy between two oppositely charged plates. The two plates are a thin tantalum anode and an oxide coating, which is generally made of tantalum pentoxide. The oxide coating acts as the dielectric that isolates the anode and cathode from each other. When a voltage is applied to the plates, an electric field is established across the oxide layer that stores energy. Tantalum capacitors have a much higher capacitance than a regular ceramic capacitor, as well as better heat and vibration resistance. Furthermore, since the dielectric layer is made of a ceramic-like material, the capacitance of tantalum capacitors remains fairly stable over a wide range of temperatures and frequencies, making them highly reliable even in severe electrical environments.

THJB225M025RJN Application Field and Working Principle

The THJB225M025RJN is a surface mount High Temperature Polymer Brazed tantalum capacitor. This type of tantalum capacitor has a solid electrolyte and conductive polymer electrolyte, making it suitable for more advanced applications such as military and aerospace. This capacitor is manufactured with a maximum operating temperature of 225°C and is rated for 200 to 1000Vdc, with 50 to 200uF rated capacitance.The THJB225M025RJN works similarly to a regular tantalum capacitor. It stores energy as an electric field between two electrodes, which are in this case the high temperature polymer brazed anode and cathode. When a voltage is applied across the plates, electron movement through the conductive polymer electrolyte creates the electric field that stores energy. The high temperature polymer brazed feature of this tantalum capacitor enables the construction of a small, lightweight, and low ESL and ESR capacitor suitable for a wide range of applications.

Conclusion

Tantalum capacitors are an important component in many electronic devices. As a type of capacitor, they work similarly to regular capacitors, but with higher capacitance and better temperature and vibration resistance. The THJB225M025RJN is a high temperature polymer brazed tantalum capacitor that is suitable for applications such as military and aerospace. This capacitor is a combination of tantalum oxide and conductive polymer electrolyte that allows for a small, lightweight, and low ESL and ESR capacitor.

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