Hammond 1530D332 33 mH Sub-Miniature Ferrite-Core RF Choke, 43 mA

The 1530D332 is a sub-miniature R.F. choke from the 1530 Series, rated at 33,000 uH (33 mH) with a ferrite core. It is intended for engineers and technicians building network, filter and delay-line circuits where a compact inductor with a specified Q and self-resonant frequency is needed.

The 1530D332 provides 33,000 uH on a ferrite core with a minimum Q of 61, the highest Q minimum shown in the 1530 table. Inductance tolerance is +/- 5%, with a minimum Q of 61 measured at a test frequency of 0.079 MHz, and a minimum self-resonant frequency (Fo) of 0.232 MHz. L and Q values for the series are measured on a Q meter.

Physically, the coil diameter is 0.353 in maximum and the form length is 0.63 in (16 mm), with a tolerance of +/- 0.03 in. Coils in this series are varnish impregnated, and the 1530 Series design ranges from only 0.25 in to 0.63 in in form length.

• Maximum DC resistance: 134 ohms
• Maximum DC current: 43 mA
• RoHS and REACH compliant; shipping weight 0.05 lbs (0.02 kg)

Please note that the manufacturer states the 1530 Series will soon be discontinued as a stocked series and is available while quantities last, which makes the 1530D332 a practical choice for maintaining or repairing existing designs that already specify it.