Hammond 1518 Heavy Duty RF Choke on 1in Ceramic Form

The 1518 is an R.F. choke from the 1500-1521 Series, one of three catalog numbers (1515, 1518 and 1521) that the manufacturer designed for heavy duty use in linear amplifiers or other transmitter applications. It is aimed at amateur and commercial transmitter builders, amplifier restorers and OEM engineers who need a robust choke in the R.F. path.

This choke is wound on a 1" diameter ceramic form, drawn from the series' low loss ceramic or powdered iron form options. Standoff insulators hold the winding clear of the chassis, and the choke fastens with a 1/4-20 mounting bolt, so installation is a single-hole bolt-down onto a panel or chassis.

The series specifies a tolerance of +/- 10% on inductance. The inductance, D.C. current and D.C. resistance values for this part are not included in the data supplied for this part, so confirm them against the manufacturer's drawing before designing it into a new circuit. The listed shipping weight is 0.5 lbs (0.23 kg).

It is RoHS and REACH compliant and is identified by UPC 623980291109 and UNSPSC 39121301. The manufacturer notes that the 1500-1521 product line will soon be discontinued as a stocked series and is available while quantities last, which makes it relevant for maintenance and replacement of existing amplifier builds.