MODEL
HM50 & HM51
Miniature Power Inductors
FEATURES AND BENEFITS
•
•
•
•
•
•
Low DCR, high current
High saturation flux density, optimum current handling capability
Low cost
Small size axial leads
Low temperature rise
Wound ferrite design, insulated with PVC sleeve
APPLICATIONS
• Designed for use with:
– Linear Technology models LT1073, LT1173
– National Semiconductor model LM2574
– Unitrode model UC2575
• Buck or boost, DC to DC power conversion
• SCR and triac controls
• EMI suppression
• Output ripple current filters
ELECTRICAL / ENVIRONMENTAL
6
Inductance Range
Standard Tolerance
Operating Temperature Range
Insulation System
Specifications subject to change without notice.
Last update: 03/17/03.
HM50:
3.9µH to 18,000µH
HM51:
3.9µH to 10,000µH
±10%
-55°C to +105°C
Class B, 130°C
6-89
Model HM50 & HM51
SPECIFICATIONS
Part
Number
HM50-3R9K
HM50-4R7K
HM50-5R6K
HM50-6R8K
HM50-8R2K
HM50-100K
HM50-120K
HM50-150K
HM50-180K
HM50-220K
HM50-270K
HM50-330K
HM50-390K
HM50-470K
HM50-560K
HM50-680K
HM50-820K
HM50-101K
HM50-121K
HM50-151K
HM50-181K
HM50-221K
HM50-271K
HM50-331K
HM50-391K
HM50-471K
HM50-561K
HM50-681K
HM50-821K
HM50-102K
HM50-122K
HM50-152K
HM50-182K
HM50-222K
HM50-272K
HM50-332K
HM50-392K
HM50-472K
HM50-562K
HM50-682K
HM50-822K
HM50-103K
HM50-123K
Inductance
Nominal
(1)
µH ±10%
3.9
4.7
5.6
6.8
8.2
10
12
15
18
22
27
33
39
47
56
68
82
100
120
150
180
220
270
330
390
470
560
680
820
1000
1200
1500
1800
2200
2700
3300
3900
4700
5600
6800
8200
10000
12000
DC
Resistance
.019
.022
.024
.026
.028
.033
.037
.040
.044
.050
.056
.076
.094
.109
.140
.131
.152
.208
.283
.340
.362
.430
.557
.665
.772
1.15
1.27
1.61
1.96
2.30
2.65
3.45
4.03
4.48
5.40
6.56
8.63
9.66
13.9
16.3
20.8
26.4
29.9
Rated
IDC
(2)
Amps
3.60
3.40
3.20
3.10
3.00
2.80
2.60
2.50
2.40
2.23
2.10
1.81
1.63
1.51
1.33
1.31
1.30
1.10
0.94
0.86
0.83
0.76
0.67
0.61
0.57
0.47
0.44
0.40
0.36
0.33
0.30
0.27
0.25
0.23
0.21
0.20
0.17
0.16
0.13
0.12
0.11
0.10
0.09
INCR
IDC
(3)
Amps
7.30
6.30
5.60
5.30
4.50
4.10
3.60
3.30
3.00
2.70
2.50
2.20
2.00
1.80
1.70
1.50
1.40
1.20
1.10
1.00
0.95
0.86
0.77
0.70
0.64
0.59
0.54
0.49
0.44
0.40
0.35
0.33
0.29
0.27
0.24
0.22
0.20
0.18
.166
.151
.136
.125
.114
Notes: (1) Inductance measured at 1kHz without DC current.
(2) The rated DC current is based on an approximate 20°C temperature rise.
(3) The incremental current (INCR I) is the approximate current at which the inductance will be decreased
by 5% from its initial (zero DC) value due to saturation.
6-90
Model HM50 & HM51
SPECIFICATIONS
Part
Number
HM50-153K
HM50-183K
HM51-3R9K
HM51-4R7K
HM51-5R6K
HM51-6R8K
HM51-8R2K
HM51-100K
HM51-120K
HM51-150K
HM51-180K
HM51-220K
HM51-270K
HM51-330K
HM51-390K
HM51-470K
HM51-560K
HM51-680K
HM51-820K
HM51-101K
HM51-121K
HM51-151K
HM51-181K
HM51-221K
HM51-271K
HM51-331K
HM51-391K
HM51-471K
HM51-561K
HM51-681K
HM51-821K
HM51-102K
HM51-122K
HM51-152K
HM51-182K
HM51-222K
HM51-272K
HM51-332K
HM51-392K
HM51-472K
HM51-562K
HM51-682K
HM51-822K
HM51-103K
Inductance
Nominal
(1)
µH ±10%
15000
18000
3.9
4.7
5.6
6.8
8.2
10
12
15
18
22
27
33
39
47
56
68
82
100
120
150
180
220
270
330
390
470
560
680
820
1,000
1,200
1,500
1,800
2,200
2,700
3,300
3,900
4,700
5,600
6,800
8,200
10,000
DC
Resistance
42.5
48.3
.007
.008
.011
.011
.013
.017
.019
.022
.023
.026
.027
.032
.033
.035
.037
.047
.060
.090
.113
.129
.150
.162
.208
.212
.281
.380
.420
.548
.655
.844
1.04
1.18
1.56
2.00
2.06
2.63
2.75
3.19
3.92
5.69
6.32
7.30
Rated
IDC
(2)
Amps
0.08
0.07
8.40
7.90
6.70
6.70
6.20
5.40
5.10
4.70
4.70
4.40
4.30
4.00
3.90
3.80
3.70
3.30
2.90
2.30
2.10
2.00
1.80
1.76
1.55
1.53
1.33
1.15
1.10
0.96
0.87
0.77
0.70
0.65
0.57
0.50
0.50
0.44
0.43
0.40
0.36
0.30
0.28
0.26
INCR
IDC
(3)
Amps
.098
.091
15.5
13.9
12.6
11.6
9.89
8.70
8.21
7.34
6.64
6.07
5.36
4.82
4.36
3.98
3.66
3.31
3.10
2.79
2.54
2.22
1.98
1.89
1.63
1.51
1.39
1.24
1.17
1.05
0.97
0.87
0.79
0.70
0.64
0.58
0.53
0.47
0.43
0.39
0.359
0.322
0.293
0.266
6
Notes: (1) Inductance measured at 1kHz without DC current.
(2) The rated DC current is based on an approximate 20°C temperature rise.
(3) The incremental current (INCR I) is the approximate current at which the inductance will be decreased
by 5% from its initial (zero DC) value due to saturation.
6-91
Model HM50 & HM51
OUTLINE DIMENSIONS (Inch/mm)
#20 GA Plated Leads
HM50:
.63 Max.
16.0
HM51:
.906 Max.
23.0
1.25 Min.
31.75
Typ.
HM50:
.984±.079 Typ.
25.0±2.0
HM51:
1.26±.079 Typ.
32.0±2.0
HM50:
HM51:
.295
7.50 Max.
.492
Max.
12.50
ORDERING INFORMATION
HM50
Model Series
330
K
Inductance Tolerance:
J = 5%
K = 10%
M = 20%
Inductance Code:
First 2 digits are significant. Last digit denotes
the number of trailing zeros. Values below 10µH,
"R" denotes the decimal point.
6-92
Model HM50 & HM51
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