|
 SMPCI-XX
Surface
Mount Pot-Core Inductors
- Fully encapsulated surface-mount lead design
- High Q
- Excellent shielding
- Low-loss ferrite cores
DESIGN NOTES
Pot-core inductors described in this brochure are manufactured of the highest quality raw materials utilizing low-loss ferrite core material; they are provided as round units with surface-mount leads to realize maximum inductance per unit volume.
These pot-core inductors are designed to provide the utmost in versatility for RF/low power applications in computers, filters, instruments, missiles, aircraft, business machines, communications equipment and similar type applications. They are designed for printed circuit board surface-mount lead applications; lead design provides positive standoff to allow flush cleaning of solder-flux residue from under the component after the soldering operation.
These inductors are designed
and manufactured to obtain maximum Q and good temperature
stability of inductance in the smallest possible package
size. The pot-core inductor design isolates the winding
from stray magnetic fields and effects from surrounding
circuit elements. The unit is secured in the housing with
epoxy resin and the top is coated with conformal coating.
Leads are .010 x .070 phosphor bronze, tin-plated per MIL-P-81728,
semi-bright. Housing material is flameproof Diallyl Phthalate
per ASTM D 5948, Type SDG-F and the mounting platform is
a liquid crystal polymer, (LCP) plastic. Diallyl Phthalate
can be used continuously at 450°F; LCP can be used continuously
at 280°C (536°F), has a melt point of 335°C
(635°F), and is inherently flame retardant. Both Diallyl
Phthalate and LCP meet the flammability requirements of
UL 94V-0.
These
pot-core inductors are designed to meet the applicable portions
of Specification MIL-PRF-15305, Grade 2, Class O. Temperature
coefficient of inductance is less than 400ppm/oC over the
operating temperature range of -30 to +70°C.
Inductors are capable of withstanding 500 V DC @ 50 microamps
applied between inductor to case.
Standard inductance tolerance is ±10%; however, units can be supplied to closer tolerances on special order. Standard apparent inductance values are shown in the following tables. Since apparent inductance varies with AC/DC current values, each end application should be evaluated to ensure proper specification of inductance value. Inductance and Q are measured on a HP 4284A/42841A LCR Meter, and self-resonant frequency is obtained utilizing a HP 4195A Network Analyzer. Tabulated current ratings are those calculated to cause a 25°C rise in case temperature.
Marking consists of manufacturer's logo (EC2), part number, terminal identification and date code of manufacture. All marking is applied by Laser Label. Coil termination occurs at lead centered under label and at lead opposite. Leads at 90° locations are no-connection mounting leads.
TEST FREQUENCY TABLE
L
(mH) RANGE
1.0 to 4.3
4.3 to 25
25 to 250
250 to 820 |
L
AND Q TEST
FREQUENCY
79 KHz
25 KHz
7.9 KHz
2.5 KHz
|
SIZE
SIZE
1
2
3
4
5
6
7
8
9 |
A
.525
.570
.670
.770
.965
1.070
1.270
1.485
1.688
|
B
.300
.320
.360
.440
.520
.640
.740
.850
.980
|
C
N/A
.360
.430
.550
.720
.850
1.010
1.200
1.400
|
D
.500
.545
.645
.745
.940
1.045
1.245
1.460
1.665
|
PART NUMBER TABLE
| PART
NUMBER |
L
(mH) |
SIZE |
DCR
TYP.
(Ohm) |
Q
NOM. |
SRF
TYP.
(MHz) |
RATED
Idc (mA) |
| SMPCI-1.0 |
1 |
1 |
2.5 |
150 |
1.25 |
350 |
| SMPCI-1.2 |
1.2 |
1 |
3 |
160 |
1.15 |
320 |
| SMPCI-1.5 |
1.5 |
1 |
3.5 |
180 |
1.08 |
290 |
| SMPCI-1.8 |
1.8 |
1 |
4 |
200 |
1.00 |
270 |
| SMPCI-2.2 |
2.2 |
2 |
5.5 |
200 |
0.89 |
270 |
| SMPCI-2.7 |
2.7 |
2 |
6 |
210 |
0.85 |
260 |
| SMPCI-3.3 |
3.3 |
2 |
6.5 |
230 |
0.73 |
250 |
| SMPCI-3.9 |
3.9 |
2 |
7 |
250 |
0.68 |
240 |
| SMPCI-4.7 |
4.7 |
3 |
5.5 |
135 |
0.72 |
300 |
| SMPCI-5.6 |
5.6 |
3 |
6 |
150 |
0.58 |
290 |
| SMPCI-6.8 |
6.8 |
3 |
7 |
165 |
0.55 |
270 |
| SMPCI-8.2 |
8.2 |
3 |
8 |
180 |
0.52 |
250 |
| SMPCI-10 |
10 |
4 |
10 |
170 |
0.37 |
260 |
| SMPCI-12 |
12 |
4 |
11 |
190 |
0.35 |
250 |
| SMPCI-15 |
15 |
4 |
12 |
220 |
0.33 |
240 |
| SMPCI-18 |
18 |
4 |
13.5 |
240 |
0.30 |
230 |
| SMPCI-22 |
22 |
5 |
15 |
280 |
0.28 |
220 |
| SMPCI-27 |
27 |
5 |
11 |
150 |
0.19 |
280 |
| SMPCI-33 |
33 |
5 |
12 |
165 |
0.17 |
270 |
| SMPCI-39 |
39 |
5 |
14 |
180 |
0.16 |
250 |
| SMPCI-47 |
47 |
5 |
16 |
190 |
0.15 |
230 |
| SMPCI-56 |
56 |
6 |
18 |
200 |
0.105 |
230 |
| SMPCI-68 |
68 |
6 |
20 |
210 |
0.100 |
220 |
| SMPCI-82 |
82 |
6 |
22 |
240 |
0.095 |
210 |
| SMPCI-100 |
100 |
6 |
24 |
270 |
0.090 |
200 |
| SMPCI-120 |
120 |
7 |
32 |
300 |
0.065 |
250 |
| SMPCI-150 |
150 |
7 |
35 |
330 |
0.063 |
240 |
| SMPCI-180 |
180 |
7 |
38 |
360 |
0.061 |
230 |
| SMPCI-220 |
220 |
7 |
42 |
400 |
0.059 |
220 |
| SMPCI-270 |
270 |
8 |
28 |
170 |
0.045 |
330 |
| SMPCI-330 |
330 |
8 |
31 |
180 |
0.043 |
310 |
| SMPCI-390 |
390 |
8 |
35 |
190 |
0.041 |
290 |
| SMPCI-470 |
470 |
8 |
38 |
200 |
0.039 |
280 |
| SMPCI-560 |
560 |
9 |
48 |
210 |
0.038 |
290 |
| SMPCI-680 |
680 |
9 |
54 |
220 |
0.034 |
270 |
| SMPCI-820 |
820 |
9 |
60 |
230 |
0.030 |
260 |
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