s t o c k p a r t n u m b e r s 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 ? info@ohmite.com 81 z series r. f. plate chokes 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. ? z-7 type furnished with non- magnetic 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. it is generally advisable to select a choke with a resonant frequency (see chart) slightly higher than the desired operating frequency since any additional capacity to ground will tend to shift the resonant frequency closer to the operating frequency. l d d l z-7, -14 & -28 (z-7 has no wire leads) z-50, -144, -235 & -460 zC7 84.0 1.00 4.70 3 C 20 13 0.563 / 14.29 6 / 152.4 zC14 44.0 0.68 2.60 7 C 35 23 0.438 / 11.11 2 / 50.6 zC28 21.0 0.60 2.70 20 C 60 41 0.313 / 7.94 1.750 / 44.45 zC50 7.0 1.00 0.98 35 C 110 79 0.281 / 7.14 1 / 25.4 zC144 1.8 1.10 0.33 80 C 200 168 0.188 / 4.76 0.750 / 19.05 zC235 0.84 1.70 0.14 160 C 350 300 0.188 / 4.76 0.750 / 19.05 zC460 0.20 4.00 0.034 320 C 520 500 0.156 / 3.97 0.500 / 12.70 part number inductance (h) 10% @ 1khz diameter (in./mm) srf (mhz) operating range (mhz) rated dc current (a) dcr ( ) length (in./mm) ordering info Z-144e z series rohs compliant specifier see chart
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