Hammond 1531L 2.4 uH Phenolic-Core RF Choke, 1500 mA

The 1531L is an R.F. and hash choke from the 1531-1535 Series with 2.4 uH of inductance (+/- 10%) on a phenolic core and a maximum DC current of 1500 mA. It is aimed at designers and repair technicians who need a single-layer solenoid choke to block RF or suppress hash noise on a DC or signal line.

With a phenolic core and a 120 MHz minimum self-resonant frequency, the 1531L is the lowest-inductance, highest-SRF part in the 1531-1535 table, while still carrying up to 1500 mA DC.

Electrically, the 1531L is specified with a minimum Q of 56 at a test frequency of 7.9 MHz, a self-resonant minimum frequency of 120 MHz and a maximum DC resistance of 0.19 ohms. The coil is wound as a solenoid (single coil) winding, which the series uses to keep distributed capacity low.

The coil diameter is 0.27 in (7 mm) and the core length is 0.75 in (19 mm). Series-wide, all models are impregnated with a moisture and fungus resistant varnish, include a vinyl insulation covering, have a lead length of 1.5 in (+/- 0.13 in) and are rated for an ambient temperature range of -40°C to +105°C.

The part is listed as RoHS and REACH compliant, and ships at 0.05 lbs (0.02 kg).