BROADBAND UNTERMINATED PCB CURRENT TRANSFORMER DATA
Suitable for low-current high-frequency applications where pcb mounting, good high frequency response and economy are prime considerations
In models K2119 and pins 1 and 5, 2 and 6 are parallel primary windings. Pins 3 and 7 are secondary windings. When pins 1 and 2 are positive pin 3 is positive.
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TYPICAL VALUES |
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Rectangular pulse |
Sinewave |
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Model |
Secondary |
Output |
Droop |
Rise |
I-t |
3dB bandwidth |
Ipeak/f |
DC sat. |
Max rms |
Peak |
Price |
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lf |
hf |
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Ohm |
V/A |
%/ms |
ns |
mA s |
Hz |
MHz |
mA/Hz |
A |
A |
A |
GBP |
Note |
1 |
2 |
|
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3 |
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4 |
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5 |
K2119 |
5 |
0.2 |
75 |
40 |
0.0005 |
140 |
10 |
3 |
0.45 |
5 |
100 |
16.50 |
50 |
2.0 |
700 |
30 |
60E-6 |
1300 |
15 |
0.35 |
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K2137 |
10 |
0.1 |
9 |
40 |
0.004 |
20 |
10 |
25 |
0.45 |
5 |
100 |
19.50 |
50 |
0.5 |
45 |
35 |
0.0009 |
80 |
12 |
6 |
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Notes
1. Resistor should be non-inductive and selected to carry secondary rms and pulse currents.
2. The sensitivity is determined from the relationship output = secondary resistor value/ratio. The ratio may be deduced from the resistor values and sensitivities in the data table. Current ratio accuracy +/-1% at log mid frequency point. +/-2% within one decade of 3dB cut-off points
3. I-t capability may be improved up to 80% by applying a dc offset current equal to Isat. See “Characteristics” section
4. High-frequency properties achieved when secondary resistor is connected to a 50R cable via a resistor designed to make the source resistor equal to 50R. A 50R terminating resistor is employed at the receiver. It may be necessary to screen the transformer in some applications.
5. Small quantity price
Other Models:
This range represent a small selection from the possible designs of unterminated broadband pcb current transformers.
The range can be extended. Contact Lilco Ltd or complete the enquiry form for further information on our custom range of PCB mounted current transformers.