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Device Marking: Part Number, Logo
1K
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
I
PP
- Peak Pulse Current - % of I
PP
Industry Standard
Low Capacitance
Solid State Protector
0
0
20
40
60
80
Time 碌s
100 120 140
160
FIGURE 4
PULSE WAVE FORM
120
Current - Amperes
FIGURE 2
CX 12LC CLAMPING VOLTAGE
100
80
60
40
t
f
Peak Value I
PP
C - TVS Capacitance - pF
e
-t
Test
Waveform
Parameters
t
f
= 8碌s
t
d
= 20碌s
30
20
10
0
0
20
40
60
80 100 120 140
Time 碌s
160
100
ProTek鈥檚
CX12LC
t
d
= t
20
0
I
PP
/2
10
0
1
2
3
4
5
V
(OP)
- Circuit Operating - Volts
0
5
10
15
20
25
30
t - Time - 碌s
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, 8/20碌s 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.
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
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