1/4-28UNF Filter

1/4-28UNF Filter Drawing

CAPACITANCE:

1)1.4uF  

2)Pi type :  0.6uF*2

3)1000pF (102pF)
4)0.01uF (103pF)
5)14uF

6-32UNC Filter drawing

Capacitance：	330pF
Capacitance tolerance:	Z (-20%~+80%)
Temp. characteristics:	X7R
Rating voltage:	200VDC
DWV:	500VDC
Current:	10A
I.R.100vdc:	3000MΩ
Operating range:	-55℃~+125℃
Circuit：	C section

What is feed through capacitor?

                       http://www.lcamic.com/rfq/


Feed through capacitor is three-terminal capacitor, named by its hollow physical structure. Low-frequency signals /power are output and input by shielding cavity,  passing through feed through capacitor and be filtered part of noises. Therefore, feedthrough capacitor is used mostly in the field of High-frequency, Super high-frequency and microwave equipments.

It's mainly a kind of ceramic capacitor. Temperature characteristics of my company is X7R, NPO, SL, KL, Y5V, Y5U and Y5P.

Installation way: Through hole.
Feed thru capacitors, whose inductance is far lessen than common capacitors. Meanwhile, to prevent efffectively high-frequency signal coupling directly from input end to output end by through hole installation way. It reach good inhibitory effect by combination between low-pass and Hi-impedance within 1Ghz frequency.
Capacitance: 10pF,65pF,100pF,470pF,500pF,1000pF,1200pF,1500pF,1750pF,2000pF,2500pF,2700pF,3000pF,3300pF,4700pF,5000pF,5500pF,6800pF,7000pF,9000pF,10000pF,0.01μF,0.012μF,0.015μF,0.018μF,0.022μF,0.025μF,0.027μF,0.028μF,0.045μF,0.050μF,0.056μF,0.075μF,0.08μF,0.1μF,0.15μF,0.21μF,0.3μF,0.75μF,0.8μF,1μF,0.015μF,0.060μF,0.062μF,0.150μF,0.200μF,0.250μF,0.250μF,0.300μF,0.450μF,0.500μF,0.7μF,0.750μF,0.990μF,1.0μF,1.2μF,1.4μF,1.5μF,2.1μF,2.8μF,4.0μF,5.2μF

Unit conversion:

1000pF=1nF 1000000pF=1μF 1000nF=1μF 1μF=1000nF=1000000pF 1F=1000000μF

Rated Current:

0.06A,0.15A,0.25A,0.3A,0.45A,0.5A,1A,2A,3A,4A,5A,10A,15A,25A,50A,100A

AC Rated Voltage:

70V,85V,90V,115V,125V,140V,200V,220V,230V,240V,330V,350V

DC Rated Voltage:

5V,28V,35V,50V,60V,70V,80V,100V,150V,200V,250V,275V,300V,330V,350V,400V,450V,500V,600V,750V,1250V,2500V

Dielectric withstand voltage: 

DC: 2.5 times of rated voltage

AC: 6 times of DC rated voltage

Working temperature range:

E:-10-+85℃ F：-25-+85℃ G：-30-+125℃H:-40-+85℃ I：-55-+85℃ J：-55-+125℃

The simplest structure is 1 capacitor or 2 capacitors comnbined with ceramic and electrode inner and outter.

APPLICATIONS:

National defense, military and telecommunication equipments, broadcast and CATV, power supplies, telemetry, radar,amplifiers, RF switches, automobile and electronic products, computer and electric appliance and other industrial controls.

Type of Circuit:

C section:   One capacitor structure.

Pi section:  Connection of 2 capacitors with 1 inductor.

LCsection:  Connection of capacitor with inductor.

T  section:    Connection of 2 inductors with 1 capacitor. 

How to customize thead feed through capacitors?

Instructions:

      If customer requires,nuts and washers are free to match.

             More Info. Please contact  Sales1@lcamic.com

Company products photos

https://picasaweb.google.com/104604855414569657915

   More Info. Please contact  sales1@lcamic.com

Manufacturer/Supplier of Obbligato Audio capacitors

Best audio capacitors, also named Obbligato premium film capacitors or speaker capacitors, good quality also cheap price.

Features:

1.        Good filter capacity

2.        Good anti-interference performance

Applications：

        Used widely for audio equipments，especially for Hi-Fi stereo circuits, completely                                   meets requirements of Hi-Fi audio towards equipments filter capacity.

                      More informations, please contact   sales1@lcamic.com

PRODUCT INSTALLATION RECOMMENDATIONS

The components in this catalog are manufactured with ceramic dielectrics. To minimize possible damage to the components, during installation, the recommendations below should be followed. For information concerning other installation requirements or component modifications, please consult LCA customer service at Email: Sales1@lcamic.com.

General Recommendations

Handling:           Excessive force or direct impact to the component may result in breakage. Lead bending or cutting, if necessary, should be done with a support for the lead to prevent mechanical stress to the component. Components with required lead modifications are available from LCA.

Lead Soldering:      Use a temperature controlled soldering iron with SN60 or SN63 RMA Flux core wire. Maximum soldering temperature to be 500°F(260°C) with a dwell time of 3 seconds maximum. The use of a heat sink between the component body and the solder joint is highly recommended.

Flux Removal:       Optimum flux removal can be achieved by vapor degreasing the components immediately after the soldering operation. Total immersion of the components is not recommended.

　　

1) Bushing Mount Recommendations

Rotating force of installation--- When install the filter on the septum or faceplate, should used the recommended rotating force. This is very important, or the filter would be damaged due to the changed shell. When install it in to the threaded hole, the maximum Install torque should be 50% of which recommended to the nut.

　　Installation tool--- Hexagonal filter should be installed with a fit drive pipe. The round should use the following method (should not be installed with pinchers, in case the filter should be damaged).

　 Round filter with slotting on the top should be presses in threaded hole use a simple special tool.

　 Ground connection---In order to ensure the filter proper functioning, the shell of the filter should be long enough to be connected to the ground, so that provide the effective way for the interference. Using adhesive locking is not recommended, in that case, it should be used after the filter has been installed.

The minimum thickness of plating---The user should note that there is tool withdrawal groove between the thread and the shell. When the thickness which is pressed into the board less than the tool withdrawal groove, there should be a problem exist. So, if possible, the thickness of the board should over the length of the tool withdrawal groove.

The maximum thickness of plating---This index is used to insure conditions include using washer; nut can completely match the tooth.
2) Solder Mount Recommendations
It should be controlled and prevented the filter not affected by the break heat shock result in the ceramic damaged inside the filter during soldering.
The speed should be control at 2℃/sec when preheating temperature. In fact, there is also successful examples that use 1.5 ~ 4℃/sec on different boards and components. Welding materials can be SN60, SN62 or similar ones.

3) Solder Terminal Block

No matter thread type or welding directly type, please focus on the followings:

The temperature of soldering iron should not over 300℃，and the longest time is 3 ~ 5 sec，try best to reduce the risk of damaging the filter by the heat shock.

Welding materials can be SN60, SN62 or similar ones.
Using radiator between the soldering point and the shell if possible, especially important when welding time is longer.
How to trim and curve block
It should be held up while it is trimmed and not be curved within 4mm closed to the epoxy sealed.

              More techinical problems, please consult   sales1@lcamic.com