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LO-HF4002

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, Ω(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 qualification 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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