B85121A4503B250 datasheet, PDF

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B85121A4503B250: DescriptionAC Feed Through Capacitor, 440V, 50/60HzHz, METAL PACKAGE; CategoryAnalog mixed-signal IC filter; File Size191KB，15 Pages; ManufacturerEPCOS (TDK); Environmental Compliance

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B85121A4503B250 Overview

AC Feed Through Capacitor, 440V, 50/60HzHz, METAL PACKAGE

B85121A4503B250 Parametric

Parameter Name	Attribute value
Is it lead-free?	Lead free
Is it Rohs certified?	conform to
Reach Compliance Code	compliant
Certification	UL
diameter	20 mm
filter type	AC FEED THROUGH CAPACITOR
maximum frequency	300 MHz
minimum frequency	0.1 MHz
high	60 mm
high potential	4000 V
Insertion loss@maximum frequency	90 dB
Insertion loss@frequency-min.	2 dB
Manufacturer's serial number	B85121
Installation type	PANEL MOUNT
working frequency	50/60Hz Hz
physical size	D20.0XH60.0 (mm)/D0.787XH2.362 (inch)
Rated current	25 A
Rated voltage	440 V
Base Number Matches	1

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EMC filters

1-line filters

Feedthrough capacitors

Rated current 16 to 200 A

Series/Type:

Date:

B85111, B85121

January 2006



EPCOS AG 2006. Reproduction, publication and dissemination of this data sheet and the

information contained therein without EPCOS’ prior express consent is prohibited.

1-line filters

Feedthrough components

General

Feedthrough components from EPCOS are used for EMI suppression of all electrical installations

and equipment. This new type series is also outstandingly well suited for telephone exchanges and

base stations. Thanks to broadband EMI suppression up to the GHz range, it prevents external in

terference pulses being transmitted to the inside of the equipment via the supply network and vice

versa.

The essential features of this new type series are its modular design and the solder-free contacting

technology developed by EPCOS with the aid of mesh contact.

Mesh contact technology permits uniform concentric contacting of the MKP capacitor winding and

avoids the thermal stress associated with soldering. The result is an even higher insertion loss, a

high insulation resistance and a particularly compact case.

The modular system used in this new technology for feedthrough capacitors and filters allows the

cost-effective implementation of a wide range of standard types. Other capacitance values can also

be supplied for special applications upon request.

Feedthrough components fitted

into a shielding wall.

In feedthrough capacitors, the conductor carrying the operating current is connected concentrically

to one electrode and is run centrally through the capacitor. The other electrode is contacted con

centrically to the capacitor case.

Feedthrough capacitors are dimensioned so that they perform well from low frequencies to far above

300 MHz. The capacitor element with low inductance contacted securely on the face side is

incorporated in a metal case provided with a screw thread.

The feedthrough filters are constructed in a

π-circuit.

They consist of two identical capacitative

transverse elements and an inductive longitudinal element. The concentric layout of the compon

ents allows high insertion loss values to be attained in a frequency range to above 1 GHz.

Safety note

Feedthrough components with high capacitances require the implementation of safety measures in

line with the applicable specifications! (See also Chapter “Mounting instructions”.)

Please read

Cautions and warnings

and

Important notes

at the end of this document.

01/06

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