s t o c k p a r t n u m b e r s
Ohmite Mfg. Co. 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
Z–7 84.0 1.00 4.70 3 – 20 13 0.563 / 14.29 6 / 152.4
Z–14 44.0 0.68 2.60 7 – 35 23 0.438 / 11.11 2 / 50.6
Z–28 21.0 0.60 2.70 20 – 60 41 0.313 / 7.94 1.750 / 44.45
Z–50 7.0 1.00 0.98 35 – 110 79 0.281 / 7.14 1 / 25.4
Z–144 1.8 1.10 0.33 80 – 200 168 0.188 / 4.76 0.750 / 19.05
Z–235 0.84 1.70 0.14 160 – 350 300 0.188 / 4.76 0.750 / 19.05
Z–460 0.20 4.00 0.034 320 – 520 500 0.156 / 3.97 0.500 / 12.70
Part
number
Inductance
(µH) ±10%
@ 1kHz
Diameter
(in./mm)
SRF (MHz)
Operating
range (MHz)
Rated DC
current (A)
DCR (Ω)
Length
(in./mm)
orDerInG Info
Z-144E
Z Series
RoHS Compliant
Specifier
see chart
