Hammond 1539M32 10000uH 1.5A Ferrite Bobbin EMI/RFI Choke

Rated for 1.5 A DC and 10000 uH, the 1539M32 RF choke belongs to the 1539 Series of EMI/RFI chokes. The manufacturer lists it as a heavy duty hash choke on a high saturation flux density ferrite bobbin, a fit for designers who need filtering or energy storage inductance in a leaded, bobbin-wound part.

Electrically, the 1539M32 is specified at 10000 uH with a +/-10% tolerance, a maximum DC resistance of 1.55 ohms, a maximum DC current of 1.5 A and a minimum Fo of 0.13 MHz. Inductance is measured at 1 kHz with 0 A DC current, and the typical inductance change is less than 5% at twice rated current, so the part holds its value well under DC bias.

The part occupies a 1.50 x 1.50 in maximum envelope (Dimension A 1.50 in (38 mm), Dimension B 1.50 in (38 mm)), with a typical Dimension C of 1.25 in (32 mm) and a typical Dimension D of 0.05 in (1 mm). It ships at 0.3 lbs (0.14 kg). Within the 1539 Series parts sharing this 1.50 x 1.50 in body, 1539M32 carries the highest inductance and lowest current rating, with siblings spanning 100 to 10000 uH.

Connections are made through 1 in long leads, tinned to within 1/8 in of the body, ready for soldering. The 1539M32 is RoHS compliant and REACH compliant.