Document Number: 34061 For technical questions, contact: magnetics@vishay.com www.vishay.com
Revision: 24-Feb-11 1
Wirewound, Surface Mount, Molded, Shielded Inductors
ISC-1812
Vishay Dale
Note
(1) Rated DC current based on the maximum temperature rise, not
to exceed 40 °C at + 85 °C ambient
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
• Compliant to RoHS Directive 2002/95/EC
• Halogen-free according to IEC 61249-2-21 definition
ELECTRICAL SPECIFICATIONS
Inductance Range: 0.10 μH to 1000 μH
Inductance Tolerance: ± 20 % for 0.10 μH to 0.82 μH
± 10 % for 1.0 μH to 1000 μH
standard
± 10 %, ± 5 %, ± 3 % available
Operating Temperature: - 55 °C to + 125 °C
Coilform Material: Non-magnetic for 0.10 μH to 0.82 μH
Powdered iron for 1.0 μH to 22 μH
Ferrite for 27 μH to 1000 μH
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
Note
(1) Recommended minimum spacing between components
STANDARD ELECTRICAL SPECIFICATIONS
IND.
(μH) TOL.
TEST
FREQ.
(MHz)
Q MIN.
SRF
MIN.
(MHz)
DCR
MAX.
()
RATED DC
CURRENT
(mA) (1)
L & Q
0.1 ± 20 % 25.2 30 460 0.23 552
0.1 ± 20 % 25.2 30 400 0.26 519
0.2 ± 20 % 25.2 30 390 0.29 491
0.2 ± 20 % 25.2 30 350 0.32 468
0.2 ± 20 % 25.2 30 310 0.36 441
0.3 ± 20 % 25.2 30 280 0.40 418
0.3 ± 20 % 25.2 30 240 0.45 394
0.4 ± 20 % 25.2 30 215 0.60 342
0.5 ± 20 % 25.2 30 205 0.75 306
0.6 ± 20 % 25.2 30 195 0.80 296
0.7 ± 20 % 25.2 30 165 0.95 271
0.8 ± 20 % 25.2 30 155 1.20 242
1.0 ± 10 % 7.96 30 140 0.35 447
1.2 ± 10 % 7.96 30 120 0.38 429
1.5 ± 10 % 7.96 30 100 0.40 418
1.8 ± 10 % 7.96 30 90.0 0.43 403
2.2 ± 10 % 7.96 30 80.0 0.46 390
2.7 ± 10 % 7.96 30 67.0 0.49 378
3.3 ± 10 % 7.96 30 61.0 0.55 357
3.9 ± 10 % 7.96 30 56.0 0.59 344
4.7 ± 10 % 7.96 30 50.0 0.62 336
5.6 ± 10 % 7.96 30 40.0 0.69 333
6.8 ± 10 % 7.96 30 32.0 0.75 306
8.2 ± 10 % 7.96 30 30.0 0.82 292
10.0 ± 10 % 2.52 50 25.0 0.90 279
12.0 ± 10 % 2.52 50 22.0 1.00 265
15.0 ± 10 % 2.52 50 18.0 1.10 252
18.0 ± 10 % 2.52 50 15.0 1.24 238
22.0 ± 10 % 2.52 50 14.0 1.36 227
27.0 ± 10 % 2.52 50 13.0 1.56 212
33.0 ± 10 % 2.52 50 12.0 1.72 202
39.0 ± 10 % 2.52 50 11.0 1.89 192
47.0 ± 10 % 2.52 50 9.0 2.10 183
56.0 ± 10 % 2.52 50 8.0 2.34 173
68.0 ± 10 % 2.52 50 7.6 2.60 164
82.0 ± 10 % 2.52 50 7.2 2.86 156
100.0 ± 10 % 0.796 50 7.0 3.25 147
120.0 ± 10 % 0.796 50 6.0 3.64 139
150.0 ± 10 % 0.796 50 5.0 4.16 130
180.0 ± 10 % 0.796 40 4.5 5.72 111
220.0 ± 10 % 0.796 40 4.2 6.30 105
270.0 ± 10 % 0.796 40 4.0 6.90 101
330.0 ± 10 % 0.796 40 3.7 7.54 96
390.0 ± 10 % 0.796 40 3.5 8.20 92
470.0 ± 10 % 0.796 40 3.3 9.20 87
560.0 ± 10 % 0.796 40 2.8 10.50 82
680.0 ± 10 % 0.796 40 2.6 12.00 76
820.0 ± 10 % 0.796 40 2.2 13.50 72
1000.0 ± 10 % 0.252 40 2.0 16.00 66
DIMENSIONS in inches [millimeters]
PART MARKING
- Vishay Dale
- Inductance value
- Date code
Guidelines for
Parallel Component
Printed Circuit
Mounting Pads on
ISC-1812 Chip
Inductors
0.037 ± 0.008
[0.940 ± 0.203]
0.126 ± 0.008
[3.200 ± 0.203]
0.050 + 0.004
- 0.008
Typ.
[1.270 ]
+ 0.102
- 0.203
0.024
(1)
[0.6]
0.059
[1.5]
0.059
[1.5]
0.118 [3.0]
0.158
[4.0]
0.158
[4.0]
0.181
[4.6]
0.124 [3.15]
Ref.
0.126 ± 0.008
[3.200 ± 0.203]
0.177 ± 0.008
[4.500 ± 0.203]
0.030 ± 0.004
[0.762 ± 0.102]
Typ.
0.006 [0.152]
Ref. Typ.