MODEL HM78 SERIES
Shielded
Surface Mount
Inductors
NEW PRODUCT
FEATURES AND BENEFITS
• Magnetic shielded construction for high density board assembly
• High performance, low loss ferrite core is excellent for high frequency applications
• Low profile designed for machine placement
• 10µH to 1,000µH inductance range
• Up to 12 amps continuous
• Compatible with vapor phase and infrared reflow soldering
• Two styles available
• Custom designs available
APPLICATIONS
• Laptop and notebook computers, PDAs
• DC/DC converter in distributed power system and hand held equipment
• Inductor for general purpose
ELECTRICAL / ENVIRONMENTAL
6
-25°C to +125°C
-40°C to +85°C
80°C
Class B, 130°C
40°C
Operating Temperature Range
Storage Temperature Range
Ambient Temperature, Maximum
Insulation System
Temperature Rise, Maximum
Specifications subject to change without notice.
Last update: 05/01/02.
6-141
Model HM78 Series
OUTLINE DIMENSIONS (Inch/mm)
Recommended
Solder Pad Layout
I
Figure 1
E
F
A
D
Max.
H
G
B
Max.
D
C
Max.
Figure 2
A
Max.
F
E
B
Max.
C
Max.
Recommended
Solder Pad Layout
H
I
D
Figure 3
yy
;;
y
;
G
J
C
Max.
Solder Mask
K
C
D
.079
2.00
.079
2.00
.079
2.00
.079
2.00
.197
5.00
.197
5.00
.197
5.00
E
.035
0.85
0.35
0.85
.043
1.10
.043
1.10
.079
2.00
.079
2.00
.079
2.00
F
.220
5.60
.220
5.60
.200
5.08
.200
5.08
.299
7.60
.299
7.60
.299
7.60
G
.256
6.50
.256
6.50
.248
6.30
.248
6.30
.394
10.0
.394
10.0
.394
10.0
H
.118
3.0
.118
3.00
.118
3.00
.118
3.00
.236
6.00
.236
6.00
.236
6.00
I
.075
1.91
.075
1.91
.075
1.91
.075
1.91
.118
3.0
.118
3.0
.118
3.0
.177
4.50
.177
4.50
.276
7.00
.276
7.00
.276
7.00
.413
10.5
.413
10.5
.710
18.0
.710
18.0
.710
18.0
J
K
A
Max.
F
E
B
Max.
Case Size
10
20
30
40
45
50
60
Figure
1
1
2
2
3
3
3
A
.291
7.40
.291
7.40
.295
7.50
.295
7.50
.492
12.5
.492
12.5
.492
12.5
B
.291
7.40
.291
7.40
.295
7.50
.295
7.50
.492
12.5
.492
12.5
.492
12.5
.150
3.80
.205
5.20
.138
3.50
.177
4.50
.177
4.50
.244
6.20
.315
8.00
6-142
Model HM78 Series
SPECIFICATIONS
Part
Number
HM78-10100
HM78-10120
HM78-10150
HM78-10180
HM78-10220
HM78-10270
HM78-10330
HM78-10390
HM78-10470
HM78-10560
HM78-10680
HM78-20100
HM78-20120
HM78-20150
HM78-20180
HM78-20220
HM78-20270
HM78-20330
HM78-20390
HM78-20470
HM78-20560
HM78-20680
HM78-20820
HM78-20101
HM78-20121
HM78-20151
HM78-20181
HM78-20221
HM78-20271
HM78-30100
HM78-30120
HM78-30150
HM78-30180
HM78-30220
HM78-30270
HM78-30330
Inductance
µH ± 20%
(1)
10
12
15
18
22
27
33
39
47
56
68
10
12
15
18
22
27
33
39
47
56
68
82
100
120
150
180
220
270
10
12
15
18
22
27
33
DC
Resistance
Ω
Max.
0.14
0.16
0.18
0.25
0.32
0.36
0.41
0.47
0.51
0.72
0.82
0.07
0.08
0.09
0.11
0.12
0.17
0.19
0.21
0.24
0.32
0.37
0.40
0.54
0.62
0.86
0.97
1.31
1.46
0.08
0.11
0.13
0.15
0.20
0.22
0.25
Rated
Current
Amps
(2)
1.00
0.94
0.86
0.78
0.76
0.64
0.61
0.53
0.50
0.46
0.42
1.65
1.50
1.34
1.22
1.10
1.00
0.90
0.83
0.75
0.69
0.63
0.57
0.52
0.47
0.42
0.38
0.35
0.31
1.68
1.52
1.33
1.20
1.07
0.96
0.91
Figure
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
2
2
2
2
2
6
Notes: 1. Inductance measured at 1.0kHz without DC current.
2. Rated DC current is the approximate current at which inductance will be decreased by 10% from its initial (zero DC) value
or the DC current at which
∆T
= 40°C, whichever is lower.
3. Part numbers which appear in
bold
print are standard items and generally available from factory stock.
6-143
Model HM78 Series
SPECIFICATIONS
Part
Number
HM78-30390
HM78-30470
HM78-30560
HM78-30680
HM78-30820
HM78-30101
HM78-30121
HM78-30151
HM78-30181
HM78-30221
HM78-30271
HM78-30331
HM78-30391
HM78-30471
HM78-40100
HM78-40120
HM78-40150
HM78-40180
HM78-40220
HM78-40270
HM78-40330
HM78-40390
HM78-40470
HM78-40560
HM78-40680
HM78-40820
HM78-40101
HM78-40121
HM78-40151
HM78-40181
HM78-40221
HM78-40271
HM78-40331
HM78-40391
HM78-40471
HM78-40561
HM78-40681
HM78-40821
HM78-453R9
HM78-454R7
HM78-456R8
Inductance
µH ± 20%
(1)
39
47
56
68
82
100
120
150
180
220
270
330
390
470
10
12
15
18
22
27
33
39
47
56
68
82
100
120
150
180
220
270
330
390
470
560
680
820
3.9
4.7
6.8
DC
Resistance
Ω
Max.
0.34
0.39
0.50
0.55
0.74
0.84
0.96
1.42
1.62
1.84
2.59
2.93
3.29
4.67
0.059
0.068
0.081
0.091
0.11
0.15
0.17
0.23
0.26
0.35
0.38
0.43
0.61
0.66
0.88
0.98
1.17
1.64
1.86
2.85
3.01
3.62
4.63
5.20
0.015
0.018
0.023
Rated
Current
Amps
(2)
0.77
0.76
0.68
0.61
0.57
0.50
0.49
0.43
0.39
0.35
0.32
0.28
0.26
0.24
1.84
1.71
1.47
1.31
1.23
1.12
0.96
0.91
0.88
0.75
0.69
0.61
0.60
0.52
0.46
0.42
0.36
0.34
0.32
0.29
0.26
0.23
0.22
0.20
6.5
5.7
4.9
Figure
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
3
3
3
Notes: 1. Inductance measured at 1.0kHz without DC current.
2. Rated DC current is the approximate current at which inductance will be decreased by 10% from its initial (zero DC) value
or the DC current at which
∆T
= 40°C, whichever is lower.
3. Part numbers which appear in
bold
print are standard items and generally available from factory stock.
6-144
Model HM78 Series
SPECIFICATIONS
Part
Number
HM78-45100
HM78-45120
HM78-45150
HM78-45180
HM78-45220
HM78-45270
HM78-45330
HM78-45390
HM78-45470
HM78-45560
HM78-45680
HM78-45820
HM78-45101
HM78-45121
HM78-45151
HM78-45181
HM78-45221
HM78-45271
HM78-45331
HM78-501R0
HM78-501R8
HM78-503R3
HM78-504R5
HM78-507R0
HM78-50100
HM78-50120
HM78-50150
HM78-50180
HM78-50220
HM78-50270
HM78-50330
HM78-50390
HM78-50470
HM78-50560
HM78-50680
HM78-50820
HM78-50101
HM78-50121
HM78-50151
HM78-50181
HM78-50221
Inductance
µH ± 20%
(1)
10
12
15
18
22
27
33
39
47
56
68
82
100
120
150
180
220
270
330
1.0
1.8
3.3
4.5
7.0
10
12
15
18
22
27
33
39
47
56
68
82
100
120
150
180
220
DC
Resistance
Ω
Max.
0.028
0.038
0.050
0.057
0.066
0.080
0.097
0.132
0.150
0.190
0.220
0.260
0.308
0.380
0.530
0.620
0.700
0.876
0.990
0.0083
0.0087
0.0131
0.0154
0.0214
0.025
0.027
0.030
0.038
0.045
0.055
0.063
0.075
0.085
0.11
0.12
0.14
0.165
0.195
0.25
0.29
0.40
Rated
Current
Amps
(2)
4.5
4.0
3.2
3.1
2.9
2.8
2.7
2.1
1.9
1.8
1.5
1.3
1.2
1.1
0.95
0.85
0.80
0.60
0.50
9.5
8.0
7.0
6.0
5.5
4.0
3.5
3.3
3.0
2.8
2.3
2.1
2.0
1.8
1.7
1.5
1.4
1.3
1.1
1.0
0.9
0.8
Figure
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
6
Notes: 1. Inductance measured at 1.0kHz without DC current.
2. Rated DC current is the approximate current at which inductance will be decreased by 10% from its initial (zero DC) value
or the DC current at which
∆T
= 40°C, whichever is lower.
3. Part numbers which appear in
bold
print are standard items and generally available from factory stock.
6-145
Model HM78 Series
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