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