6
6-141 Model HM78 Series
• 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
Operating Temperature Range -25°C to +125°C
Storage Temperature Range -40°C to +85°C
Ambient Temperature, Maximum 80°C
Insulation System Class B, 130°C
Temperature Rise, Maximum 40°C
Specifications subject to change without notice.
Last update: 05/01/02.
MODEL HM78 SERIES
Shielded
Surface Mount
Inductors
NEW PRODUCT
FEATURES AND BENEFITS
APPLICATIONS
•Laptop and notebook computers, PDAs
•DC/DC converter in distributed power system and hand held equipment
•Inductor for general purpose
ELECTRICAL / ENVIRONMENTAL
6-142 Model HM78 Series
OUTLINE DIMENSIONS (Inch/mm)
;
;;
y
yy
I
J
G
K
Solder Mask
C
Max.
F
D
A
Max.
B
Max.
A
Max.
B
Max.
Recommended
Solder Pad Layout
H
I
H
Recommended
Solder Pad Layout
E
F
D
E
C
Max.
A
Max.
B
Max.
G
.291
7.40
.291
7.40
.295
7.50
.295
7.50
.492
12.5
.492
12.5
.492
12.5
A
1
1
2
2
3
3
3
Figure
10
20
30
40
45
50
60
Case Size
.291
7.40
.291
7.40
.295
7.50
.295
7.50
.492
12.5
.492
12.5
.492
12.5
B
.150
3.80
.205
5.20
.138
3.50
.177
4.50
.177
4.50
.244
6.20
.315
8.00
C
.079
2.00
.079
2.00
.079
2.00
.079
2.00
.197
5.00
.197
5.00
.197
5.00
D
.035
0.85
0.35
0.85
.043
1.10
.043
1.10
.079
2.00
.079
2.00
.079
2.00
E
.220
5.60
.220
5.60
.200
5.08
.200
5.08
.299
7.60
.299
7.60
.299
7.60
F
.256
6.50
.256
6.50
.248
6.30
.248
6.30
.394
10.0
.394
10.0
.394
10.0
G
.118
3.0
.118
3.00
.118
3.00
.118
3.00
.236
6.00
.236
6.00
.236
6.00
H
.075
1.91
.075
1.91
.075
1.91
.075
1.91
.118
3.0
.118
3.0
.118
3.0
I
.177
4.50
.177
4.50
.276
7.00
.276
7.00
.276
7.00
J
.413
10.5
.413
10.5
.710
18.0
.710
18.0
.710
18.0
K
C
Max.
F
E
D
Figure 1
Figure 2
Figure 3
6
6-143 Model HM78 Series
DC Rated
Part Inductance Resistance Current
Number µH ± 20% (1) ΩMax. Amps (2) Figure
HM78-10100 10 0.14 1.00 1
HM78-10120 12 0.16 0.94 1
HM78-10150 15 0.18 0.86 1
HM78-10180 18 0.25 0.78 1
HM78-10220 22 0.32 0.76 1
HM78-10270 27 0.36 0.64 1
HM78-10330 33 0.41 0.61 1
HM78-10390 39 0.47 0.53 1
HM78-10470 47 0.51 0.50 1
HM78-10560 56 0.72 0.46 1
HM78-10680 68 0.82 0.42 1
HM78-20100 10 0.07 1.65 1
HM78-20120 12 0.08 1.50 1
HM78-20150 15 0.09 1.34 1
HM78-20180 18 0.11 1.22 1
HM78-20220 22 0.12 1.10 1
HM78-20270 27 0.17 1.00 1
HM78-20330 33 0.19 0.90 1
HM78-20390 39 0.21 0.83 1
HM78-20470 47 0.24 0.75 1
HM78-20560 56 0.32 0.69 1
HM78-20680 68 0.37 0.63 1
HM78-20820 82 0.40 0.57 1
HM78-20101 100 0.54 0.52 1
HM78-20121 120 0.62 0.47 1
HM78-20151 150 0.86 0.42 1
HM78-20181 180 0.97 0.38 1
HM78-20221 220 1.31 0.35 1
HM78-20271 270 1.46 0.31 1
HM78-30100 10 0.08 1.68 2
HM78-30120 12 0.11 1.52 2
HM78-30150 15 0.13 1.33 2
HM78-30180 18 0.15 1.20 2
HM78-30220 22 0.20 1.07 2
HM78-30270 27 0.22 0.96 2
HM78-30330 33 0.25 0.91 2
SPECIFICATIONS
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
DC Rated
Part Inductance Resistance Current
Number µH ± 20% (1) ΩMax. Amps (2) Figure
HM78-30390 39 0.34 0.77 2
HM78-30470 47 0.39 0.76 2
HM78-30560 56 0.50 0.68 2
HM78-30680 68 0.55 0.61 2
HM78-30820 82 0.74 0.57 2
HM78-30101 100 0.84 0.50 2
HM78-30121 120 0.96 0.49 2
HM78-30151 150 1.42 0.43 2
HM78-30181 180 1.62 0.39 2
HM78-30221 220 1.84 0.35 2
HM78-30271 270 2.59 0.32 2
HM78-30331 330 2.93 0.28 2
HM78-30391 390 3.29 0.26 2
HM78-30471 470 4.67 0.24 2
HM78-40100 10 0.059 1.84 2
HM78-40120 12 0.068 1.71 2
HM78-40150 15 0.081 1.47 2
HM78-40180 18 0.091 1.31 2
HM78-40220 22 0.11 1.23 2
HM78-40270 27 0.15 1.12 2
HM78-40330 33 0.17 0.96 2
HM78-40390 39 0.23 0.91 2
HM78-40470 47 0.26 0.88 2
HM78-40560 56 0.35 0.75 2
HM78-40680 68 0.38 0.69 2
HM78-40820 82 0.43 0.61 2
HM78-40101 100 0.61 0.60 2
HM78-40121 120 0.66 0.52 2
HM78-40151 150 0.88 0.46 2
HM78-40181 180 0.98 0.42 2
HM78-40221 220 1.17 0.36 2
HM78-40271 270 1.64 0.34 2
HM78-40331 330 1.86 0.32 2
HM78-40391 390 2.85 0.29 2
HM78-40471 470 3.01 0.26 2
HM78-40561 560 3.62 0.23 2
HM78-40681 680 4.63 0.22 2
HM78-40821 820 5.20 0.20 2
HM78-453R9 3.9 0.015 6.5 3
HM78-454R7 4.7 0.018 5.7 3
HM78-456R8 6.8 0.023 4.9 3
SPECIFICATIONS
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
6-145 Model HM78 Series
DC Rated
Part Inductance Resistance Current
Number µH ± 20% (1) ΩMax. Amps (2) Figure
HM78-45100 10 0.028 4.5 3
HM78-45120 12 0.038 4.0 3
HM78-45150 15 0.050 3.2 3
HM78-45180 18 0.057 3.1 3
HM78-45220 22 0.066 2.9 3
HM78-45270 27 0.080 2.8 3
HM78-45330 33 0.097 2.7 3
HM78-45390 39 0.132 2.1 3
HM78-45470 47 0.150 1.9 3
HM78-45560 56 0.190 1.8 3
HM78-45680 68 0.220 1.5 3
HM78-45820 82 0.260 1.3 3
HM78-45101 100 0.308 1.2 3
HM78-45121 120 0.380 1.1 3
HM78-45151 150 0.530 0.95 3
HM78-45181 180 0.620 0.85 3
HM78-45221 220 0.700 0.80 3
HM78-45271 270 0.876 0.60 3
HM78-45331 330 0.990 0.50 3
HM78-501R0 1.0 0.0083 9.5 3
HM78-501R8 1.8 0.0087 8.0 3
HM78-503R3 3.3 0.0131 7.0 3
HM78-504R5 4.5 0.0154 6.0 3
HM78-507R0 7.0 0.0214 5.5 3
HM78-50100 10 0.025 4.0 3
HM78-50120 12 0.027 3.5 3
HM78-50150 15 0.030 3.3 3
HM78-50180 18 0.038 3.0 3
HM78-50220 22 0.045 2.8 3
HM78-50270 27 0.055 2.3 3
HM78-50330 33 0.063 2.1 3
HM78-50390 39 0.075 2.0 3
HM78-50470 47 0.085 1.8 3
HM78-50560 56 0.11 1.7 3
HM78-50680 68 0.12 1.5 3
HM78-50820 82 0.14 1.4 3
HM78-50101 100 0.165 1.3 3
HM78-50121 120 0.195 1.1 3
HM78-50151 150 0.25 1.0 3
HM78-50181 180 0.29 0.9 3
HM78-50221 220 0.40 0.8 3
SPECIFICATIONS
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.
PACKAGING
Standard: Embossed Tape & Reel
Reel Diameter = 13” (330mm)
Capacity: Case sizes 10, 20, 30, 40 = 1,000 Units
Case sizes 45, 50, 60 = 500 Units
6-146 Model HM78 Series
DC Rated
Part Inductance Resistance Current
Number µH ± 20% (1) ΩMax. Amps (2) Figure
HM78-50271 270 0.46 0.75 3
HM78-50331 330 0.51 0.68 3
HM78-50391 390 0.69 0.65 3
HM78-50471 470 0.77 0.58 3
HM78-50561 560 0.88 0.54 3
HM78-50681 680 1.20 0.48 3
HM78-50821 820 1.34 0.43 3
HM78-50102 1000 1.53 0.40 3
HM78-601R4 1.4 .0052 12.0 3
HM78-602R4 2.4 0.011 8.0 3
HM78-604R7 4.7 0.016 6.8 3
HM78-607R6 7.6 0.02 5.9 3
HM78-60100 10 0.022 5.4 3
HM78-60120 12 0.025 4.9 3
HM78-60150 15 0.027 4.5 3
HM78-60180 18 0.039 3.9 3
HM78-60220 22 0.043 3.6 3
HM78-60270 27 0.046 3.4 3
HM78-60330 33 0.065 3.0 3
HM78-60390 39 0.073 2.75 3
HM78-60470 47 0.10 2.5 3
SPECIFICATIONS
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.
6-147 Model HM78 Series
HM78 20 100
Model Series
Case Size/Body Style:
Inductance Code:
1st two digits are significant.
Last digit denotes number
of trailing zeros.
10
20
30
40
45
50
60
1
1
2
2
3
3
3
=
=
=
=
=
=
=
ORDERING INFORMATION
Tape Material: Polyestyrene
Case Size W
.945
24.0
.945
24.0
.945
24.0
.945
24.0
.945
24.0
.945
24.0
.945
24.0
T
.150
3.80
.181
4.60
.150
3.80
.181
4.60
.189
4.80
.256
6.50
.327
8.30
P
.473
12.0
.473
12.0
.473
12.0
.473
12.0
.630
16.0
.630
16.0
.630
16.0
B
.299
7.60
.299
7.60
.299
7.60
.299
7.60
.512
13.0
.512
13.0
.512
13.0
F
.453
11.5
.453
11.5
.453
11.5
.453
11.5
.453
11.5
.453
11.5
.453
11.5
A
.299
7.60
.299
7.60
.299
7.60
.299
7.60
.512
13.0
.512
13.0
.512
13.0
10
20
30
40
45
50
60
W
F
.010±.002
0.25±0.05
.157±.004
4.0±0.1
.079±.002
2.0±0.05
T
.069±.004
1.75±0.1
Ø
±.008
±0.2
±.004
±0.1
A
.059+.004-0
1.5+0.1-0
B±.004
±0.1
P ±.004
±0.1
TAPE AND REEL (Inch/mm)
