B81122A1273M

Operating Temperature:	-40°C ~ 100°C
Features:	--
Ratings:	--
Applications:	EMI, RFI Suppression
Lead Spacing:	0.591" (15.00mm)
Termination:	PC Pins
Height - Seated (Max):	0.571" (14.50mm)
Size / Dimension:	0.709" L x 0.335" W (18.00mm x 8.50mm)
Package / Case:	Radial
Mounting Type:	Through Hole
Series:	B81122
Dielectric Material:	Polypropylene (PP)
Voltage Rating - DC:	--
Voltage Rating - AC:	250V
Tolerance:	±20%
Capacitance:	0.027µF
Moisture Sensitivity Level (MSL):	--
Part Status:	Obsolete
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Introduction

B81122A1273M is a series of film capacitors manufactured by EPCOS, specifically designed for application in power electronics and renewable energy systems. It is the first of its kind to feature advanced non-linear characteristics and high energy storage and transfer capacities. The B81122A1273M is suitable for use in high-power RF amplifiers, DC–DC converters, electric motor drives, photovoltaic inverters and other systems operating in high or low temperature conditions. This product has many advantages, such as low ESR, high ripple current capacity, low power losses, long life and reliable performance.

Application Field

The B81122A1273M is designed for solar power inverters, automotive electronics, welding and test and measurement applications. In addition, this capacitor can also be used in switch mode power supplies, UPS, telecoms and induction heating equipment. Its applications in the automotive sector are for engine control modules, processors, ECUs and ECU power supplies, LED controllers, Igniter box, emission systems, brake controls and airbags. In industrial applications, the B81122A1273M can be used for AC and DC motors, air conditioning systems, HVAC controllers or any kind of automation systems.

Working Principle

A capacitor works by allowing electric current to flow when there is a voltage across its terminals. The B81122A1273M, being a film capacitor, is composed of two metallic layers (anodes) separated by a dielectric layer (insulating material). This dielectric material is commonly polypropylene or polyester film. This dielectric film is then rolled up into a cylindrical shape with insulating layers.Once the B81122A1273M is placed between two electric sources, the stored energy is then influenced by the current flowing through it. The capacitor is able to store energy due to its dielectric material, which limits the rate in which electric current can flow. When a voltage is applied, electric charge accumulates on the two metal plates of the capacitor, and this charge is stored in the dielectric material in between. The greater the applied voltage, the larger the capacitance of the capacitor.

Conclusion

The B81122A1273M is a remarkable film capacitor designed for power electronics and renewable energy systems. This series accounts for low ESR, high ripple current capacity, low power losses, long life and reliable performance, making it suitable for a wide range of applications. The working principle of the B81122A1273M consists mainly of the dielectric material, which allows the capacitor to store energy when a voltage is applied. This product is an ideal choice for solar inverters, welding and test and measurement applications and many other applications where flexibility, reliability and compactness are highly valued.

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