engineeredcomponentscompany
ADivisionofCornucopiaTool&Plastics,Inc.POBox1915,448SherwoodRd.,PasoRoblesCA93447
Phone:805-369-0034
Fax:805-369-0033
Web:www.ec2.com
VerticalSurfaceMountToroidalInductor
TheVerticalSurfaceMountToroidalInductorsmanufacturedbyEngineeredComponents
Company are designed for RF/low power applications using stable powdered iron core
material. The fully encapsulated inductor provides a low external magnetic field, a high
self-resonantfrequency,andahighQ.
The standard inductance value tolerance is +/-5% when measured at the frequencies
specified in Table 1. Inductance values are measured on an HP 4284A LCR meter.
Since inductance varies with AC/DC current values, each end application should be
evaluatedtoensureproperreadings.Thetabulatedcurrentratings(RatedI )arethose
calculated to cause a 25 deg. C rise in case temperature. These inductors are designed
to meet the applicable portions of MIL-C-15305, Grade 1, Class B. The temperature
coefficient of inductance is less than 400ppm/deg. C over the operating temperature
range of -55 to +125 deg. C. Inductors are capable of withstanding 500Vdc@50 uA
appliedbetweenthecoilandthecase.
DC
The inductor is fully encapsulated in epoxy resin and is housed in a Liquid Crystal
Polymer case, off-white in color. The case dimensions are specified in Table 2. The
case marking is applied by silkscreen using blue epoxy paint. The 4 Phosphor-Bronze
orBerylliumCopperleadsaretin-leadplatedandthe2activeleadsaremarkedonthe
casebythecoilemblem.
Specialmodulescanoftenbemanufacturedtoprovideforcustomerspecificapplications.
ProductSelectionTableProductSelectionTable(cont.)
PARTLSIZEDCRQSRFTYP.RATEDIDCPARTLSIZEDCRQSRFTYP.RATEDIDC
NUMBER(uH)(ohms)(nom)(Mhz)(mA)NUMBER(uH)(ohms)(nom)(Mhz)(mA)
VSMT-2.72.710.509093900VSMT-5656.032.410613450
VSMT-3.03.010.509087880VSMT-62
MT-3.33.310.508781860VSMT-68
VSMT-3.63.610.508776840VSMT-75
VSMT-3.93.910.608571820VSMT-82
VSMT-4.34.310.608567810VSMT-91
VSMT-4.74.710.608063800VSMT-100
VSMT-5.15.110.607860790VSMT-110
VSMT-5.65.610.607857780VSMT-120
VSMT-6.26.210.607554770VSMT-130
VSMT-6.86.810.607551760VSMT-150
VSMT-7.57.520.809248750VSMT-160
VSMT-8.28.220.909245730VSMT-180
VSMT-9.19.120.909242710VSMT-200
VSMT-1010.020.909140690VSMT-220
VSMT-1111.021.09138670VSMT-240
VSMT-1212.021.19136650VSMT-270
VSMT-1313.021.19034630VSMT-300
VSMT-1515.021.29032610VSMT-330
VSMT-1616.021.29030600VSMT-360
VSMT-1818.021.39028590VSMT-390
VSMT-2020.021.49026570VSMT-430
VSMT-2222.021.58924550VSMT-470
VSMT-2424.021.58922540VSMT-510
VSMT-2727.021.68821530VSMT-560
VSMT-3030.021.78820510VSMT-620
VSMT-3333.021.88719500VSMT-680
VSMT-3636.021.98518490VSMT-750
VSMT-3939.022.08317480VSMT-820
VS
62.032.610212440
VS 68.032.89812420
75.033.09611410
82.033.29410400
91.033.49210400
10033.61059380
11033.81049370
12033.91038360
13034.01028350
15034.21027340
16034.41017330
18034.81016330
20045.11006320
22045.41005320
24045.71005320
27043.81005400
30044.01004390
33044.21004380
36044.41004370
39044.6993360
43044.8983350
47045.0973350
51045.2953340
56045.5923330
62055.8882.8350
68056.2822.6340
75056.5752.5330
82056.8702.3320
MT-4343.022.18016470VSMT-91091057.1652.2320
VSMT-4747.022.27615470VSMT-1000100057.51152.1310
VSMT-5151.032.311014460VSMT-1200120058.21151.8300
W=WIDTH
L=LENGTH
H=HEIGHT
A=LEADSPACING(WIDTH)
VSMT-
220
YY WW
NCNC
MADEINUSA
W
L
A
H
.020
TYP.
.125 TYP.
.010 TYP.
.065 TYP.
DATE
CODE
32440
TABLE1
TestFrequencies
INDUCTANCE
(INuH)
2.7-9.1
10-91
100-910
1000-1200
TEST
FREQUENCY
7.9MHz
2.5MHz
790KHz
250KHz
SIZEWL H A
1.150.250.260
2.200.300.310
3.225.350.360
4.250.500.510
5.300.600.610
.100
.100
.150
.150
.200
TABLE2
PackageSizes