Hammond 1537R 1000uH 1.25A High Current Ferrite Core RF Choke

The 1537R is a high current R.F. choke from the 1537 Series, specified at 1000 uH with a tight +/-5% tolerance and a maximum DC current of 1.25 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.

It is the highest-inductance model in the 1537 series at 1000 uH, with a 1.25 A maximum DC current. Its nearest inductance neighbour in the series is the 1537P below it (750 uH, 2 A), so the 1537R fills the 1000 uH step at 1.25 A.

Key electrical values for the 1537R: DC resistance of 0.83 ohms and a minimum Q of 7.4, 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: 0.59 in (15 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 623980300108 and UNSPSC 39121301.