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
SurfaceMountToroidalInductor
The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)
SMT-2.72.710.509093900SMT-5656.032.410613450
SMT-3.03.010.509087880SMT-62
MT-3.33.310.508781860SMT-68
SMT-3.63.610.508776840SMT-75
SMT-3.93.910.608571820SMT-82
SMT-4.34.310.608567810SMT-91
SMT-4.74.710.608063800SMT-100
SMT-5.15.110.607860790SMT-110
SMT-5.65.610.607857780SMT-120
SMT-6.26.210.607554770SMT-130
SMT-6.86.810.607551760SMT-150
SMT-7.57.520.809248750SMT-160
SMT-8.28.220.909245730SMT-180
SMT-9.19.120.909242710SMT-200
SMT-1010.020.909140690SMT-220
SMT-1111.021.09138670SMT-240
SMT-1212.021.19136650SMT-270
SMT-1313.021.19034630SMT-300
SMT-1515.021.29032610SMT-330
SMT-1616.021.29030600SMT-360
SMT-1818.021.39028590SMT-390
SMT-2020.021.49026570SMT-430
SMT-2222.021.58924550SMT-470
SMT-2424.021.58922540SMT-510
SMT-2727.021.68821530SMT-560
SMT-3030.021.78820510SMT-620
SMT-3333.021.88719500SMT-680
SMT-3636.021.98518490SMT-750
SMT-3939.022.08317480SMT-820
S
62.032.610212440
S 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SMT-91091057.1652.2320
SMT-4747.022.27615470SMT-1000100057.51152.1310
SMT-5151.032.311014460SMT-1200120058.21151.8300
A=WIDTH&LENGTH
B=HEIGHT
C=LEADSPACING
SMT-
620
YY WW
MADEIN
USA
C
C
L
L
A
A
1/2C
C
.025
B
.020 TYP.
.010
TYP.
DATE
CODE
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 A BC
1.250.200.150
2.300.200.200
3.350.275.250
4.400.275.300
5.500.275.400
TABLE2
PackageSizes