Vertical Mount Toroidal Inductor
W
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
DC
) 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.
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 copper leads are
tin-lead plated and the 2 active leads are marked on the case by the coil emblem.
Product Selection Table
PART
L
SIZE DCR
Q
SRF TYP RATED IDC
.
NUMBER
(uH)
(ohms) (nom) (Mhz)
(mA)
VMT-2.7
2.7
1
0.50
90
93
900
VMT-3.0
3.0
1
0.50
90
87
880
3.3
1
0.50
87
81
860
VMT-3.3
VMT-3.6
3.6
1
0.50
87
76
840
VMT-3.9
3.9
1
0.60
85
71
820
VMT-4.3
4.3
1
0.60
85
67
810
VMT-4.7
4.7
1
0.60
80
63
800
VMT-5.1
5.1
1
0.60
78
60
790
VMT-5.6
5.6
1
0.60
78
57
780
VMT-6.2
6.2
1
0.60
75
54
770
VMT-6.8
6.8
1
0.60
75
51
760
VMT-7.5
7.5
2
0.80
92
48
750
VMT-8.2
8.2
2
0.90
92
45
730
VMT-9.1
9.1
2
0.90
92
42
710
VMT-10
10.0
2
0.90
91
40
690
VMT-11
11.0
2
1.0
91
38
670
VMT-12
12.0
2
1.1
91
36
650
VMT-13
13.0
2
1.1
90
34
630
VMT-15
15.0
2
1.2
90
32
610
VMT-16
16.0
2
1.2
90
30
600
VMT-18
18.0
2
1.3
90
28
590
VMT-20
20.0
2
1.4
90
26
570
VMT-22
22.0
2
1.5
89
24
550
VMT-24
24.0
2
1.5
89
22
540
VMT-27
27.0
2
1.6
88
21
530
VMT-30
30.0
2
1.7
88
20
510
VMT-33
33.0
2
1.8
87
19
500
VMT-36
36.0
2
1.9
85
18
490
VMT-39
39.0
2
2.0
83
17
480
VMT-43
43.0
2
2.1
80
16
470
VMT-47
47.0
2
2.2
76
15
470
VMT-51
51.0
3
2.3
110
14
460
Special modules can often be manufactured to provide for customer specific applications.
H
A
INDUCTANCE
TEST
(IN uH)
FREQUENCY
2.7-9.1
7.9MHz
10-91
2.5MHz
100-910
790KHz
1000-1200
250KHz
TABLE 1
Test Frequencies
Product Selection Table (cont.)
PART
L
SIZE DCR
Q
SRF TYP RATED IDC
.
NUMBER
(uH)
(ohms) (nom) (Mhz)
(mA)
VMT-56
56.0
3
2.4
106
13
450
VMT-62
62.0
3
2.6
102
12
440
VMT-68
68.0
3
2.8
98
12
420
VMT-75
75.0
3
3.0
96
11
410
VMT-82
82.0
3
3.2
94
10
400
VMT-91
91.0
3
3.4
92
10
400
VMT-100 100
3
3.6
105
9
380
VMT-110 110
3
3.8
104
9
370
VMT-120 120
3
3.9
103
8
360
VMT-130 130
3
4.0
102
8
350
VMT-150 150
3
4.2
102
7
340
VMT-160 160
3
4.4
101
7
330
VMT-180 180
3
4.8
101
6
330
VMT-200 200
4
5.1
100
6
320
VMT-220 220
4
5.4
100
5
320
VMT-240 240
4
5.7
100
5
320
VMT-270 270
4
3.8
100
5
400
VMT-300 300
4
4.0
100
4
390
VMT-330 330
4
4.2
100
4
380
VMT-360 360
4
4.4
100
4
370
VMT-390 390
4
4.6
99
3
360
VMT-430 430
4
4.8
98
3
350
VMT-470 470
4
5.0
97
3
350
VMT-510 510
4
5.2
95
3
340
VMT-560 560
4
5.5
92
3
330
VMT-620 620
5
5.8
88
2.8
350
VMT-680 680
5
6.2
82
2.6
340
VMT-750 750
5
6.5
75
2.5
330
VMT-820 820
5
6.8
70
2.3
320
VMT-910 910
5
7.1
65
2.2
320
VMT-1000 1000
5
7.5
115
2.1
310
VMT-1200 1200
5
8.2
115
1.8
300
Phone: 805-369-0034
Fax:
805-369-0033
Web: www.ec2.com
engineered components company
A Division of Cornucopia Tool & Plastics, Inc. PO Box 1915, 448 Sherwood Rd., Paso Robles CA 93447
MADE IN USA
NC
NC
VMT-
220
YYWW
DATE
CODE
L
.025
.300
TYP.
B
W=WIDTH
L=LENGTH
H=HEIGHT
A=LEAD SPACING (WIDTH)
B=LEAD SPACING (LENGTH)
SIZE W L
H
A
B
1 .150 .250 .250 N/A .200
2 .200 .300 .300 .150 .250
3 .225 .350 .350 .150 .250
4 .250 .500 .500 .150 .400
5 .300 .600 .600 .200 .500
TABLE 2
Package Sizes
The Vertical 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.
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