 Description >>
The LO-HF4002 current sense transformers are designed to monitor AC currents. They can be used for
high frequency current sensing, for example in switched-mode power supplies, motor control and
electronic lighting ballasts.
Features >>
RoHS compliant
50, 100, 200 & 300 Turn variants
Primary current up to 40A
20kHz-200kHz frequency range
Mechanical Specification >>
 Electric Specification@25C >>
| SELECTION GUIDE |
| Order Code |
Number of
Turns |
Inductance Min. |
DC Resistance |
Terminating Resistance to
Produce 1VOUT/1AIN
|
| ±1 Turn |
Pins 1&2 |
Pins 1&2, ?(MAX) |
? |
| LO-HF4002 |
200 |
90H @0.25V, 1kHz |
4.0 |
50 |
| ABSOLUTE MAXIMUM RATINGS |
| Operating free air temperature range |
-40°C to 85°C |
| Storage temperature range |
-40°C to 100°C |
| SOLDERING INFORMATION |
| Peak wave solder temperature |
300oC for 10Seconds |
| Pin finish |
Tin |
Technical Notes >>
ISOLATION VOLTAGE
All LO-HF4002current sense transformers are tested at 500Vdc for a minimum of 1 second during our
standard test procedure.
In addition, as part of our quali?cation process carried out prior to product launch, the
LO-HF4002 demonstrated no isolation breakdown at 10kVdc or 6kVac with a bare conductor as the
primary winding. Whilst this does not imply these parts are designed for environments where such high
voltages may be present, it does demonstrate the level of isolation voltage these products are able to
withstand. Full mains safety isolation can be achieved with appropriately insulated wire on the primary
winding. |
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