VHF Chokes B82500 VHF chokes with ferrite core Rated voltage 250 V dc/ac Rated current 0,2 to 2 A Rated inductance 120 to 3900 µH Construction ■ Ferrite cylinder core ■ Winding: low-capacitance, multilayer, enamel copper wire ■ Polyester insulating sleeve Features ■ High resonance frequency ■ High inductance ratings Applications ■ RF blocking and filtering ■ Interference suppression in small appliances Marking LR and IR in clear text Delivery mode Bulk Dimensional drawing 203 04/00 VHF Chokes B82500 Characteristics and ordering codes For further technical data see page 194 IR LR fres Rtyp A µH MHz 0,2 0,5 1,0 2,0 3900 820 330 120 1,8 3,0 4,2 5,8 Ordering code Ω Approx. weight g 20 2,5 0,6 0,15 7 7 7 7 B82500-C-A2 B82500-C-A5 B82500-C-A8 B82500-C-A10 Impedance |Z | versus frequency f (typical values) B82500-C- 204 04/00 VHF Chokes B82114 VHF chokes for power line applications Rated voltage 500 V dc/ac1) Rated current max. 1 A Construction ■ Round 6-aperture ferrite core ■ With or without insulating sleeve Features ■ The selected core material provides maximum impedance in the relevant frequency range of 50 to 200 MHz ■ An insulating sleeve prevents any turn-to-turn short circuits Applications ■ Broadband interference suppression in electrical systems and equipment in the RF and VHF range ■ Reduction of radiated interference in broadcasting and TV receivers Delivery mode Bulk Dimensional drawing Type B82114-R-A … (without insulating sleeve) Type B82114-R-C … (with insulating sleeve) Tinned leads, wire diameter 0,5 + 0,15 mm 1) 500 Vac only with insulating sleeve ∗) Insulating sleeve 205 04/00 VHF Chokes B82114 Technical data Test voltage 2500 Vac, 1 min (only with insulation) Rated current max. 1 A Climatic category In accordance with IEC 60068-1 B82114-R-A: 55/120/21 (– 55 °C/+120 °C/21 days damp heat test) B82114-R-C: 55/125/56 (– 55 °C/+125 °C/56 days damp heat test) Characteristics and ordering codes fres Color code Number of turns Gewicht ca. g Version Ordering code MHz |Z | at fres Ω 60 900 brown 2,5 1,3 non-insulated insulated B82114-R-A4 B82114-R-C4 100 800 green 2,5 1,3 non-insulated insulated B82114-R-A1 B82114-R-C1 Impedance |Z | versus frequency f (typical values) Iv: dc magnetic bias B82114-RSSB0557-Z 10 3 |Z | Ω 10 2 -A4/-C4 ( Ι v = 50 mA) -A1/-C1 ( Ι v = 250 mA) 10 1 2 10 10 3 10 4 10 5 kHz 10 6 f 206 04/00 VHF Chokes Packing VHF chokes Reel packing for type B82111-E (for taping see data sheet page 198) Reel packing for types B82131 … B82134 (for taping see data sheet page 195) Label Type Reel dimensions (mm) Packing units n+1 W max. Pieces/reel B82111-E 97 109 1000 B82131, B82132 95 107 2000 B82133, B82134 95 107 1000 207 04/00 Vakatseite (( 208 ))