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CX12 Schematic ( PDF Datasheet ) - ETC

Teilenummer CX12
Beschreibung COAXIAL PROTECTOR
Hersteller ETC
Logo ETC Logo 




Gesamt 2 Seiten
CX12 Datasheet, Funktion
. . . engineered solutions for the transient environment™
CX12
thru
CX12LC
COAXIAL PROTECTOR
APPLICATIONS
High Speed Video Camera
Coaxial Ethernet
High Speed Data Lines
IEC COMPATIBILITY (EN61000-4)
61000-4-5 (Surge): 24A, 8/20µs - Level 2(Line-Gnd) & Level 3(Line-Line)
FEATURES
Meets IEC 1000-4-5 Industry Requirements
BNC Connection
Low Capacitance
Completely Enclosed Aluminum Housing
Low Clamping Voltage
Nanosecond Response Time
Long Life and Maintenance Free
Finger Safe Connectors
MECHANICAL CHARACTERISTICS
Metal Package
Weight 161 Grams (Approximate)
Device Marking: Part Number, Logo
DESCRIPTION
The CX12 series is a two stage, hybrid surge protector designed to protect interfacing equipment from
induced lightning or switching transients. The multistage technique has proven to be the most cost
effective and reliable method for protecting sensitive electronic equipment. Employing state-of-the-art
avalanche junction diode technology, these devices provide superior performance for video, Ethernet,
Token Ring or other LAN interface systems. They are in-line modules with easy interconnecting terminals. A
completely enclosed aluminum housing provides EMC shielding to meet industry standard requirements.
The enclosure has two female BNC type connections for easy installation. The case is ground for those
installations that require external ground connections.
FIGURE 3
LINEAR VS NON-LINEAR CAPACITANCE
1000
Industry Standard
Low Capacitance
Solid State Protector
100
ProTek’s
CX12LC
10
01 2 3 4 5
V(OP) - Circuit Operating - Volts
120
100
80
60
40
20
0
0
FIGURE 4
PULSEWAVE FORM
Test
tf
Peak Value I
PP
Waveform
Parameters
tf = 8µs
e-t td = 20µs
t =t
d
IPP/2
5 10 15 20 25 30
t - Time - µs
Figure 3 shows a comparison of capacitance between a
industrial standard device (Top Line) and the ProTek Device
CX12LC (Bottom Line). Due to the drastic change in the
capacitance of the product (Top Line), signal distortion,
loss of data or even access into the computer may be a
problem.
05017.R2 7/02
1
Surgebuster®
CX12 PACKAGE
FIGURE 1
TRANSIENTVOLTAGETHREAT
CONDITION
2K
1K
0
0 20 40 60 80 100 120 140 160
Time µs
FIGURE 2
CX 12LC CLAMPINGVOLTAGE
30
20
10
0
0 20 40 60 80 100 120 140 160
Time µs
Figure 1 and 2 are photographs of digitized waveforms
showing a typical transient voltage and the clamping
action of the CX12LC module. The device was sub-
jected to a 2000A, 8/20µs impulse waveform in accor-
dance with ANSI C62.36. The CX12 has an operating
frequency range up to 10MHz and the CX12LC up to
100MHz.
www.protekdevices.com





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