FEATURES
•Printed circuit mounting (axial leads).
•Protected by polyolefin tubing.
•High saturation bobbin used allowing high inductance with low DC resistance.
•Pre-tinned leads.
•High resistivity core offers very high parallel resistance, resulting in maximum
coil performance.
• 20 sleeveless models available at reduced cost.
± 15%
INDUCTANCE
TOLERANCE
DIMENSIONAL CONFIGURATIONS
1.13 [28.70]
Min. Typ.
.032 [.813]
Dia. Typ.
B Max.
A Dia.
Max.
HOW TO ORDER
3.9µH
INDUCTANCE
VALUE
PART MARKING
[Numbers in brackets indicate millimeters]
MODEL
IHD-1
IHD-3
A (Max.)
.270 [6.85]
.460 [11.68]
B (Max.)
.700 [17.78]
.900 [22.86]
IHD-1
MODEL
— Vishay Dale
— Model
— Value
— Date code
ELECTRICAL SPECIFICATIONS
Inductance: Measured at 1V with no
DC current.
Incremental Current: The typical current
at which the inductance will be decreased
by 5% from its initial zero DC value.
Dielectric Rating: 2500V RMS between
winding and outer circumference to within
.250" [6.35mm] of the insulating sleeve
edge.
Operating Temperature:
- 55°C to + 125°C (no load).
- 55°C to + 85°C (at full rated current).
Current Rating: Maximum continuous.
Operating current (DC or RMS) based on a
40°C temperature rise.
MECHANICAL SPECIFICATIONS
Wire: Solid soft copper.
Terminals: 20 AWG tinned copper leads.
Coating: Polyolefin tubing - flame
retardant UL type VW-1 per MIL-I-23053/5,
Class 3 requirements.
Core Material: Ferrite.
Filter Inductors
High Current
#20 AWG
MODEL IHD-1 MODEL IHD-3
INCRE-
MENTAL
CURRENT
(Amps
Approx.)
STANDARD ELECTRICAL SPECIFICATIONS
RATED
CURRENT
(Max.
Amps)
DCR
MAX.
(Ohms)TOL.
IND.
@ 1kHz
(µH)
INCRE-
MENTAL
CURRENT
(Amps
Approx.)
DCR
MAX.
(Ohms)TOL.
IND.
@ 1kHz
(µH)
RATED
CURRENT
(Max.
Amps)
8.2
7.5
6.9
6.3
5.7
5.2
4.7
4.3
3.9
3.5
3.2
2.9
2.7
2.5
2.3
2.1
1.9
1.7
1.6
1.4
1.3
1.2
1.1
.95
.88
.80
.74
.67
.61
.56
.51
.46
.42
.38
.34
.31
.29
.26
.24
.22
.20
.18
.17
.15
.14
.12
.11
.10
.09
.09
.08
.07
.07
.06
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
3.2
2.5
2.0
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.2
1.0
1.0
.80
.80
.60
.60
.60
.50
.40
.40
.40
.40
.32
.25
.25
.25
.20
.20
.16
.13
.13
.13
.10
.10
.10
.08
.07
.07
.007
.008
.011
.011
.013
.016
.018
.020
.022
.024
.025
.028
.031
.034
.043
.059
.066
.084
.113
.129
.150
.162
.226
.257
.288
.393
.504
.570
.643
.844
.977
1.18
1.50
1.76
2.13
2.53
2.84
3.79
4.24
5.75
6.44
7.30
9.34
10.7
14.8
18.0
22.7
25.7
29.7
33.7
38.0
52.8
67.3
76.0
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
1200.0
1500.0
1800.0
2200.0
2700.0
3300.0
3900.0
4700.0
5600.0
6800.0
8200.0
10000.0
12000.0
15000.0
18000.0
22000.0
27000.0
33000.0
39000.0
47000.0
56000.0
68000.0
82000.0
100000.0
7.0
6.4
5.7
5.2
4.7
4.3
3.9
3.6
3.3
3.0
2.7
2.5
2.3
2.1
1.9
1.7
1.5
1.4
1.3
1.2
1.1
.97
.88
.80
.73
.66
.60
.54
.49
.45
.40
.37
.34
.31
.28
.26
.23
.21
.19
.18
.16
.14
.13
.12
.11
.10
.09
.08
.08
.07
.06
.06
5.3
5.0
4.8
4.6
4.4
4.2
4.0
3.8
3.4
3.2
3.1
3.0
2.8
2.6
2.5
2.4
2.2
1.9
1.8
1.7
1.6
1.4
1.3
1.3
1.1
.94
.87
.83
.70
.67
.62
.57
.49
.47
.41
.36
.33
.31
.29
.25
.24
.21
.20
.17
.16
.15
.13
.11
.10
.10
.08
.08
.009
.010
.011
.012
.013
.014
.016
.017
.022
.024
.026
.028
.033
.037
.040
.044
.050
.070
.075
.084
.104
.130
.145
.152
.208
.283
.330
.362
.505
.557
.650
.770
1.03
1.14
1.50
1.98
2.30
2.55
3.0
4.0
4.40
5.80
6.56
8.63
10.1
11.2
15.0
20.8
23.4
26.0
36.0
40.0
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
1200.0
1500.0
1800.0
2200.0
2700.0
3300.0
3900.0
4700.0
5600.0
6800.0
8200.0
10000.0
12000.0
15000.0
18000.0
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Model IHD
Vishay Dale
Document Number 34016
Revision 28-Apr-99
www.vishay.com
118