Hammond 1537K 75uH 2A High Current Ferrite Core RF Choke

The 1537K is a high current R.F. choke from the 1537 Series, specified at 75 uH with a tight +/-5% tolerance and a maximum DC current of 2 A. The part page describes it as an RF choke, heavy duty hash choke, suited to designers who need a leaded choke with a defined minimum Q.

Other 1537 parts sharing the 2 A rating are the 1537P, which differ in inductance (750 uH). Its nearest inductance neighbours in the series are the 1537J below it (50 uH, 3.2 A) and the 1537L above it (100 uH, 8 A), so the 1537K fills the 75 uH step at 2 A.

Key electrical values for the 1537K: DC resistance of 0.128 ohms and a minimum Q of 3.2, with inductance tested at 1 kHz. The large ferrite core provides an extended saturation point, and the series lists an optimum frequency range of .01-2 MHz.

• Coil diameter: 0.54 in (14 mm)
• Core length: 1.25 in
• Leads: 1.5 in (+/- 0.1 in), 20 gauge lead diameter
• Operating temperature: -55 C to +135 C

The coil is covered with a vinyl insulation shrink sleeve. The part is RoHS and REACH compliant, ships at 0.05 lbs (0.02 kg), and carries UPC 623980299105 and UNSPSC 39121301.