50 MH z @ 10 0M Hz @ 15 0M Hz @ 20 0M Hz @ 22 0M Hz @ @ TU RN S #O F PA RT Wound Beads FI GU RE NU MB ER Series 4212 10 MH z MINIMUM IMPEDANCE 4212-1 4212-2 4212-3 4212-4 1–3 1–3 1–1 1–1 2 1 ⁄2 2 1 ⁄2 1 1 ⁄2 1 1 ⁄2 — 325 — 170 — — 325 320 750 575 425 375 700 525 — — — — 400 — 400 — — — 4212-5 4212-6 1–2 1–2 2 2 — 240 525 520 600 480 — — 600 — — — 4212-7 4212-8 1–4 1–4 3 3 — 400 950 800 900 550 — — 600 — — — Physical Parameters Length Diameter Lead Size AWG #24 TCW A B Inches 0.374 to 0.414 0.216 to 0.256 Millimeters 9.50 to 10.51 5.48 to 6.35 0.0185 to 0.0215 0.12 Max. 1.10 Min. 0.47 to 0.55 3.05 Max. 28.0 Min. Impedances measured on HP 4191A Impedance Analyzer. High resistivity ferrite material eliminates the need to insulate windings. SUPPRESSORS Lead Wire Tin/Lead coated copper Packaging Bulk only For more detailed graphs, contact factory IMPEDANCE vs. FREQUENCY 1200 1 = Dash 1 7 Number IMPEDANCE (OHMS) 1000 2 800 8 5 6 600 400 4 200 3 20 40 60 80 100 120 140 160 180 200 220 240 FREQUENCY (MHz) www.delevan.com E-mail: [email protected] 270 Quaker Rd., East Aurora NY 14052 • Phone 716-652-3600 • Fax 716-652-4814 PAGE 2/ 2002 107