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.
L
D
Z-50, -144,
-235 & -460
Z-7, -14
& -28
Z Series
R. F. Plate Chokes
(Z-7 has no
wire leads)
D
L
stock part numbers
Operating
range (MHz)
Inductance
(µH) ±10%
@ 1kHz
SRF (MHz)
Rated DC
current (A)
Diameter
(in./mm)
Length
(in./mm)
DCR (Ω)
Part
number
It is generally advisable to
select a choke with a resonant
frequency (see chart) slightly
higher than the desired
orDerInG Info
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–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
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 • info@ohmite.com
81
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