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Part: B85121-A-B9
Category:
Description: Feedthrough Cap 50nfx2
Company:
Datasheet: Download B85121-A-B9 datasheet File size : 98 kB
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EMCComponents
Feed-Through Capacitors Feed-Through Filters in Solderless MKP Technology
Data Book Supplement
Vakatseite
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Feed- Through Capacitors Feed- Through Filters
B85121 B85321
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G eneral
MeshContact is a solderless technology newly developed by Siemens Matsushita Components. It allows uniform concentric contacting of MKP capacitor winds, avoiding the thermal stress caused by soldering. The result is even better insertion loss, high insulation resistance plus compact, small cas ing. Basically, feed- through components can be used to suppress interference in all electrical installations and equipment. The new series is also ideal for telephone switching systems and base stations and, through broadband suppression effective into the GHz region, prevents interference pulses from entering equipment from outside through the power supply network and vice versa. There is now a building- block system available in this new technology for feed- through capacitors and filters, allowing fast and attractively priced solutions to be implemented. Interim ratings can be produced to order for special applications.
Feed- through elements fitted into a shielding wall
Selector guide Diameter 30 mm 55 mm Voltage range up to 75 A up to 500 A Capacitance range 0,1 ... 1 µF 0,5 ... 4,7 µF
Siemens Matsushita Components
9.98
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Feed- Through Capacitors Feed- Through Filters
B85121 B85321
In feed- through capacitors the conductor carrying the load current is connected concentrically to one electrode and passes through the center of the capacitor. The other electrode makes concentric contact with the capacitor case. Feed- through capacitors are designed to be effective from low frequency to far above 300 MHz. The low- loss winding with high- stability contact to the leads at its face ends is enclosed in a metal case with either a threaded stud at one end or an external thread. Feed- through filters have filter circuits consisting of two equal shunt capacitors and one ferromagnetic inductor connected in series. Due to the concentric arrangement of the components, high attenuation values are obtained for frequencies up to and exceeding 1 GHz. Safety note! If feed- through elements with high capacitances are used, protective measures (e.g. protective earthing) in accordance with equipment/system regulations (product standards) are required! 2 Mounting instructions
To fully utilize their RF characteristics, feed- through components must be fitted directly into the shielding wall. The component case must make perfect and unbroken (RF- tight!) contact with the shielding. This can be best achieved by screwing them into a threaded hole or bushing, so that good electrical contact is made by the flanks of the thread. As an alternative, feed- through elements can be screwed into feed- through holes in a shielding wall and held by a retaining nut. Contact between the case and the shielding wall is produced by the contact surface on the thread. The connecting line must be attached by fixing it between two countered nuts in order to avoid exposing the component to torque loads (use two spanners). NOTE Due to the danger of exposing the feed throughs to mechanical loads caused by shock and vibration, it is not permissible to use rigid copper bars as connecting elements.
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9.98
Siemens Matsushita Components
Feed- Through Capacitors Feed- Through Filters
B85121 B85321
Construction
q Building- block system q MKP technology (dry, self- healing)
Dielectric: polypropylene, metallized
q Metal case with synthetic resin terminals q For central screw fixing
Features
q Compact dimensions q Variable current rating and capacitance
through building- block system
q High attenuation q Simple fitting q High contact reliability through
central screw fixing Applications Broadband interference suppression for ac/dc supply lines, e.g. in q shielded rooms q telephone exchanges, base stations q electrical machines and systems q power supplies Terminals
q Threaded studs
Marking Manufacturer, ordering code, EMI suppression class, rated capacitance, rated voltage, rated current, climatic category, circuit diagram, date of manufacture (MM.YY) Standards Feed- through capacitors comply with EN 133 200 Feed- through filters comply with EN 133 400 Safety information Due to the high capacitance ratings protective measures (e.g. protective earthing) in accordance with equipment/system regulations are required. Circuit diagrams
SSB1274-B
SSB1275-J
Feed- through filters
Feed- through capacitors
Siemens Matsushita Components
9.98
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Others parts begin by b8
B8-1 B8-2
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