IMC-1812
Vishay Dale
Wirewound, Surface Mount, Molded Inductors
FEATURES
• Molded construction provides superior strength
and moisture resistance
• Tape and reel packaging for automatic
handling, 2000/reel, EIA-481
• Printed marking
• Compatible with vapor phase and infrared reflow
soldering
• Compliant to RoHS Directive 2002/95/EC
STANDARD ELECTRICAL SPECIFICATIONS
DCR RATED DC
MAX. CURRENT
IND.
(mA)
(1)
()
(μH)
TOL.
0.010 ± 20 %
0.20
450
0.012 ± 20 %
0.20
450
0.018 ± 20 %
0.20
450
0.022 ± 20 %
0.20
450
0.027 ± 20 %
0.20
450
0.033 ± 20 %
0.30
450
0.039 ± 20 %
0.30
450
0.047 ± 20 %
0.30
450
0.056 ± 20 %
0.35
450
0.068 ± 20 %
0.35
450
0.082 ± 20 %
0.40
450
0.10 ± 20 %
0.32
450
0.12 ± 20 %
0.30
450
0.15 ± 20 %
0.30
450
0.18 ± 20 %
0.35
450
0.22 ± 20 %
0.40
450
0.27 ± 20 %
0.45
450
0.33 ± 20 %
0.55
430
0.39 ± 20 %
0.70
380
0.47 ± 10 %
0.80
355
0.56 ± 10 %
1.20
285
0.68 ± 10 %
1.40
270
0.82 ± 10 %
1.60
250
1.0
± 10 %
0.50
450
1.2
± 10 %
0.55
430
1.5
± 10 %
0.60
410
1.8
± 10 %
0.65
390
2.2
± 10 %
0.70
380
2.7
± 10 %
0.75
370
3.3
± 10 %
0.80
355
3.9
± 10 %
0.90
330
4.7
± 10 %
1.00
315
5.6
± 10 %
1.10
300
6.8
± 10 %
1.20
285
8.2
± 10 %
1.40
270
10.0 ± 10 %
1.60
250
12.0 ± 10 %
2.00
225
15.0 ± 10 %
2.50
200
18.0 ± 10 %
2.80
190
22.0 ± 10 %
3.20
180
27.0 ± 10 %
3.60
170
33.0 ± 10 %
4.00
160
39.0 ± 10 %
4.50
150
47.0 ± 10 %
5.00
140
56.0 ± 10 %
5.50
135
68.0 ± 10 %
6.00
130
82.0 ± 10 %
7.00
120
100.0 ± 10 %
8.00
110
120.0 ± 10 %
8.00
110
150.0 ± 10 %
9.00
105
180.0 ± 10 %
9.50
102
220.0 ± 10 %
10.0
100
270.0 ± 10 %
12.0
92
330.0 ± 10 %
14.0
85
390.0 ± 10 %
16.0
80
470.0 ± 10 %
26.0
62
560.0 ± 10 %
30.0
50
680.0 ± 10 %
30.0
50
820.0 ± 10 %
35.0
30
1000.0 ± 10 %
40.0
30
Note
(1)
Rated DC current based on the maximum temperature rise, not
to exceed 40 °C at + 85 °C ambient
Document Number: 34044
Revision: 23-Feb-11
TEST FREQ.
SRF
(MHz)
MIN.
Q
MIN. (MHz)
L&Q
50.0
50 1000
50.0
50 1000
50.0
50 1000
50.0
50 1000
50.0
50 1000
50.0
50 1000
50.0
50 1000
50.0
50 1000
50.0
40
900
50.0
40
800
50.0
40
700
25.2
30
650
25.2
30
600
25.2
30
500
25.2
30
400
25.2
30
350
25.2
30
300
25.2
30
250
25.2
30
220
25.2
30
190
25.2
30
170
25.2
30
150
25.2
30
140
7.96
50
100
7.96
50
80.0
7.96
50
70.0
7.96
50
60.0
7.96
50
55.0
7.96
50
50.0
7.96
50
45.0
7.96
50
40.0
7.96
50
35.0
7.96
50
33.0
7.96
50
27.0
7.96
50
25.0
2.52
50
20.0
2.52
50
18.0
2.52
50
17.0
2.52
50
15.0
2.52
50
13.0
2.52
50
12.0
2.52
50
11.0
2.52
50
11.0
2.52
50
10.0
2.52
50
9.0
2.52
50
9.0
2.52
50
8.0
0.79
40
8.0
0.79
40
6.0
0.79
40
5.0
0.79
40
5.0
0.79
40
4.0
0.79
40
4.0
0.79
40
3.5
0.79
40
3.0
0.79
40
3.0
0.79
30
3.0
0.79
30
3.0
0.79
30
2.5
0.25
30
2.5
ELECTRICAL SPECIFICATIONS
Inductance Range:
0.010 μH to 1000 μH
Inductance Tolerance:
± 20 % for 0.010 μH to 0.39 μH
± 10 % for 0.47 μH to 1000 μH standard
± 10 %, ± 5 %, ± 3 % available
Operating Temperature:
- 55 °C to + 125 °C
Coilform Material:
Non-magnetic for 0.010 μH to 0.82 μH
Powdered iron for 1.0 μH to 120 μH
Ferrite for 150 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
DIMENSIONS
in inches [millimeters]
0.126 ± 0.008
[3.200 ± 0.203]
0.177 ± 0.008
[4.500 ± 0.203]
0.126 ± 0.008
[3.200 ± 0.203]
0.037 ± 0.008
[0.940 ± 0.203]
0.006 [0.152]
Ref. Typ.
0.030 ± 0.004
[0.762 ± 0.102]
Typ.
+ 0.004
- 0.008
+ 0.102
[1.270
- 0.203
]
0.050
Typ.
0.124 [3.15]
Ref.
Guidelines for
Parallel Component
Printed Circuit
Mounting Pads on
IMC-1812 Chip
Inductors
0.158
[4.0]
0.181
[4.6]
0.024
(1)
[0.6]
0.158
[4.0]
0.059
[1.5]
0.118 [3.0]
0.059
[1.5]
Note
(2)
Recommended minimum spacing between components
PART MARKING
- Vishay Dale
- Inductance value
- Date code
www.vishay.com
1
For technical questions, contact:
magnetics@vishay.com
Legal Disclaimer Notice
www.vishay.com
Vishay
Disclaimer
ALL PRODUCT, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE TO IMPROVE
RELIABILITY, FUNCTION OR DESIGN OR OTHERWISE.
Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively,
“Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained in any datasheet or in any other
disclosure relating to any product.
Vishay makes no warranty, representation or guarantee regarding the suitability of the products for any particular purpose or
the continuing production of any product. To the maximum extent permitted by applicable law, Vishay disclaims (i) any and all
liability arising out of the application or use of any product, (ii) any and all liability, including without limitation special,
consequential or incidental damages, and (iii) any and all implied warranties, including warranties of fitness for particular
purpose, non-infringement and merchantability.
Statements regarding the suitability of products for certain types of applications are based on Vishay’s knowledge of typical
requirements that are often placed on Vishay products in generic applications. Such statements are not binding statements
about the suitability of products for a particular application. It is the customer’s responsibility to validate that a particular
product with the properties described in the product specification is suitable for use in a particular application. Parameters
provided in datasheets and/or specifications may vary in different applications and performance may vary over time. All
operating parameters, including typical parameters, must be validated for each customer application by the customer’s
technical experts. Product specifications do not expand or otherwise modify Vishay’s terms and conditions of purchase,
including but not limited to the warranty expressed therein.
Except as expressly indicated in writing, Vishay products are not designed for use in medical, life-saving, or life-sustaining
applications or for any other application in which the failure of the Vishay product could result in personal injury or death.
Customers using or selling Vishay products not expressly indicated for use in such applications do so at their own risk. Please
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Material Category Policy
Vishay Intertechnology, Inc. hereby certifies that all its products that are identified as RoHS-Compliant fulfill the
definitions and restrictions defined under Directive 2011/65/EU of The European Parliament and of the Council
of June 8, 2011 on the restriction of the use of certain hazardous substances in electrical and electronic equipment
(EEE) - recast, unless otherwise specified as non-compliant.
Please note that some Vishay documentation may still make reference to RoHS Directive 2002/95/EC. We confirm that
all the products identified as being compliant to Directive 2002/95/EC conform to Directive 2011/65/EU.
Vishay Intertechnology, Inc. hereby certifies that all its products that are identified as Halogen-Free follow Halogen-Free
requirements as per JEDEC JS709A standards. Please note that some Vishay documentation may still make reference
to the IEC 61249-2-21 definition. We confirm that all the products identified as being compliant to IEC 61249-2-21
conform to JEDEC JS709A standards.
Revision: 02-Oct-12
1
Document Number: 91000
Special Edition for Assessment Centres
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