L R. F. Plate Chokes L Z–7 84.0 Z–14 44.0 Z–28 21.0 Z–50 7.0 Z–144 1.8 Z–235 0.84 Z–460 0.20 1.00 0.68 0.60 1.00 1.10 1.70 4.00 4.70 2.60 2.70 0.98 0.33 0.14 0.034 3 – 20 7 – 35 20 – 60 35 – 110 80 – 200 160 – 350 320 – 520 13 23 41 79 168 300 500 0.563 / 14.29 0.438 / 11.11 0.313 / 7.94 0.281 / 7.14 0.188 / 4.76 0.188 / 4.76 0.156 / 3.97 Length (in./mm) Diameter (in./mm) SRF (MHz) Operating range (MHz) stock part numbers DCR (Ω) It is generally advisable to select a choke with a resonant frequency (see chart) slightly higher than the desired OR D ER I N G i n f o operating frequency since RoHS Compliant any additional capacity to ground will tend to shift Z-144E the resonant frequency closer to the operating Z Series Specifier frequency. see chart Z Series Z-50, -144, -235 & -460 Z-7, -14 & -28 Rated DC current (A) • Z-7 type furnished with nonmagnetic mounting bracket. • Z-14, Z-28 type have wire leads welded to lug type terminals. • Z-50, Z-144, Z-235, Z-460 type have axial wire leads. D D Inductance (µH) ±10% @ 1kHz (Z-7 has no wire leads) Part number Ohmite radio frequency plate chokes have a single-layer winding designed to avoid adverse harmonic effects and prevents breakdown from high r.f. potentials. Windings are insulated and protected by a moisture-proof coating. 6 2 1.750 1 0.750 0.750 0.500 / 152.4 / 50.6 / 44.45 / 25.4 / 19.05 / 19.05 / 12.70 Ohmite Mfg. Co. 1600 Golf Rd., Suite 850, Rolling Meadows, IL 60008 • Tel. 1-866-9-OHMITE • Fax 1-847-574-7522 • www.ohmite.com • [email protected] 81