Model ISC-1812
Vishay Dale
Inductors
Surface Mount, Molded, Shielded
FEATURES
•
Molded construction provides superior strength and moisture resistance.
•
Tape and reel packaging for automatic handling, 2000/reel, EIA 481.
•
Compatible with vapor phase and infrared reflow soldering.
•
Shielded construction minimizes coupling to other components.
STANDARD ELECTRICAL SPECIFICATIONS
TEST
FREQ.
L&Q
(MHz)
ELECTRICAL SPECIFICATIONS
RATED
DC
CURRENT
(mA)
IND.
(
µ
H)
.10
.12
.15
.18
.22
.27
.33
.39
.47
.56
.68
.82
1.0
1.2
1.5
1.8
2.2
2.7
3.3
3.9
4.7
5.6
6.8
8.2
10.0
12.0
15.0
18.0
22.0
27.0
33.0
39.0
47.0
56.0
68.0
82.0
100.0
120.0
150.0
180.0
220.0
270.0
330.0
390.0
470.0
560.0
680.0
820.0
1000.0
TOL.
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
20%
20%
20%
20%
20%
20%
20%
20%
20%
20%
20%
20%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
Q
MIN.
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
40
40
40
40
40
40
40
40
40
40
SELF-
RESONANT
FREQ. MIN.
(MHz)
DCR
MAX.
(Ohms)
25.2
25.2
25.2
25.2
25.2
25.2
25.2
25.2
25.2
25.2
25.2
25.2
7.96
7.96
7.96
7.96
7.96
7.96
7.96
7.96
7.96
7.96
7.96
7.96
2.52
2.52
2.52
2.52
2.52
2.52
2.52
2.52
2.52
2.52
2.52
2.52
.796
.796
.796
.796
.796
.796
.796
.796
.796
.796
.796
.796
.252
460.0
400.0
390.0
350.0
310.0
280.0
240.0
215.0
205.0
195.0
165.0
155.0
140.0
120.0
100.0
90.0
80.0
67.0
61.0
56.0
50.0
40.0
32.0
30.0
25.0
22.0
18.0
15.0
14.0
13.0
12.0
11.0
9.0
8.0
7.6
7.2
7.0
6.0
5.0
4.5
4.2
4.0
3.7
3.5
3.3
2.8
2.6
2.2
2.0
.23
.26
.29
.32
.36
.40
.45
.60
.75
.80
.95
1.20
.35
.38
.40
.43
.46
.49
.55
.59
.62
.69
.75
.82
.90
1.0
1.10
1.24
1.36
1.56
1.72
1.89
2.10
2.34
2.60
2.86
3.25
3.64
4.16
5.72
6.30
6.90
7.54
8.20
9.20
10.50
12.0
13.50
16.0
552
519
491
468
441
418
394
342
306
296
271
242
447
429
418
403
390
378
357
344
336
333
306
292
279
265
252
238
227
212
202
192
183
173
164
156
147
139
130
111
105
101
96
92
87
82
76
72
66
Inductance Range:
.10µH to 1000µH.
Inductance Tolerance:
±
20% for .10µH to .82µH.
±
10% for 1.0µH to 1000µH standard.
±
10%,
±
5%,
±
3% and 2% (also 1% on some values)
available.
Temperature Range:
- 55°C to + 125°C.
Coilform Material:
Non-Magnetic for .10µH to .82µH.
Powdered iron for 1.0µH to 22µH. Ferrite for 27µH to 1000µH.
TEST EQUIPMENT
•
H/P 4342A Q-meter with Vishay Dale test fixture or equivalent.
•
H/P 4191A RF Impedance Analyzer (for SRF measurements).
•
Wheatstone bridge.
DIMENSIONAL CONFIGURATIONS
[Numbers in brackets indicate millimeters]
.126
±
.008
[3.20
±
.203]
.006
[.152]
Ref.
Typ.
.177
±
.008
[4.50
±
.203]
.037
±
.008
[.940
±
.203]
.050 + .004
- .008
[1.27 + .102]
- .203]
.030
±
.004
[.762
±
.102]
Typ.
.124 [3.15]
Ref.
.126
±
.008
[3.20
±
.203]
.158
[4.0]
Guidelines for
Parallel Component
Printed Circuit
Mounting Pads on
ISC-1812
Chip Inductors
.181 [4.6]
.024*
[0.6]
.059
[1.5]
.118 [3.0]
.059
[1.5]
.158
[4.0]
*Recommended minimum spacing between components.
PART MARKING
— Vishay Dale
— Inductance value
— Date code
COUPLING SPECIFICATIONS (MAXIMUM)
10
COUPLING (%)
5
HOW TO ORDER
1
.5
1
5
10
50 100
500 1000
ISC-1812
INDUCTANCE (
µ
H)
MODEL
10
µ
H
INDUCTANCE
VALUE
±
10%
INDUCTANCE
TOLERANCE
www.vishay.com
46
Document Number 34061
Revision 03-May-99
Switching Power Supply Study Group
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EEWORLD
