er
w
Po
SERIES
HCTR
HCT
s
or
ct
du
In
High Current Toroidal Inductors
Physical Parameters:
Actual Size
(HCT-44X)
A
B
C
D
E
F
Max.
Max.
Max.
HCT-37X
0.615 0.600 0.370 0.500 0.440 0.500
HCT-44X
0.665 0.665 0.400 0.560 0.490 0.560
HCT-50X
0.740 0.740 0.400 0.630 0.560 0.630
HCT-68X
0.945 0.940 0.400 0.820 0.700 0.820
Above dimensions in inches and unless otherwise stated all
tolerances are ± 0.010
Mechanical Configuration
Units are surface mount, low profile, self-leaded devices
Frequency Range
1kHz up to 1 MHz
Operating Temperature Range
–30°C to +130°C
Leads
Solder tinned
Materials
Meet UL94V-0
Optional Tolerances
As low as 10% available on some values.
Consult factory for details.
Maximum Power Dissipation at 25°C Ambient
HCT-37x, 0.9 W
HCT-44x, 1.0 W
HCT-50x, 1.1 W
HCT-68x, 1.2 W
Marking
API; part number.
Example: HCT-504
API
HCT-504
Packaging
Bulk; contact factory for tape & reel options.
Package
ELECTRICAL SPECIFICATIONS @ 25°C
MB
ER
IN
*
DU
(µ CT
H) A
± 2 NC
5% E
Q
TY
PI
CA
L
L
&
FR Q T
EQ ES
T
SR UEN
F
C
TY (M Y (
PI Hz kH
C ,
z)
DC AL)
MA RES
XI IST
M A
DC UM NC
(m E
Ω
TY RES
PI IS )
CA TA
L NC
(m E
Ω)
5°
C
DC AMPS TO PRODUCE A MAXIMUM
TEMPERATURE RISE FROM 25°C AMBIENT
SH
NU
15
°C
25
°C
35
°C
45
°C
16.00
12.80
10.10
9.04
14.30
11.80
10.00
8.15
11.10
9.94
8.50
6.97
12.10
8.57
7.24
6.04
-371
-372
-373
-374
-441
-442
-443
-444
-501
-502
-503
-504
-681
-682
-683
-684
1.25
2.1
2.8
4.2
2.8
4.2
5.7
9.0
6.5
8.4
12.5
17.0
10.5
17.6
22.0
29.0
32
27
27
24
33
29
29
26
25
23
23
22
35
35
30
30
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
100
260
160
110
100
110
85
65
55
55
45
35
29
30
24
21
16
2.5
4.0
6.3
7.9
3.6
5.4
7.5
11.4
6.6
8.3
11.4
17.0
6.2
12.3
17.5
25.0
2.2
3.4
5.4
6.8
3.2
4.7
6.4
9.8
5.8
7.2
9.8
14.6
5.3
10.7
15.0
21.5
5.73
4.58
3.62
3.23
5.13
4.23
3.60
2.91
3.97
3.55
3.04
2.49
4.35
3.06
2.58
2.16
9.75
7.78
6.17
5.49
8.73
7.20
6.13
4.95
6.75
6.04
5.17
4.23
7.40
5.21
4.40
3.67
12.30
9.87
7.82
6.97
11.00
9.14
7.78
6.28
8.56
7.66
6.56
5.37
9.39
6.60
5.58
4.66
14.30
11.40
9.10
8.10
12.80
10.60
9.05
7.31
9.96
8.91
7.63
6.25
10.90
7.68
6.49
5.42
17.40
13.90
11.00
9.83
15.60
12.80
10.90
8.87
12.00
10.80
9.25
7.58
13.20
9.32
7.87
6.57
*Complete part # must include series # PLUS the dash #
For surface finish information, refer to www.delevanfinishes.com
270 Quaker Rd., East Aurora NY 14052 • Phone 716-652-3600 • Fax 716-652-4814 • E-mail: apisales@delevan.com • www.delevan.com
55
°C
DA
1/2009
er
w
Po
SERIES
HCTR
HCT
s
or
ct
du
In
High Current Toroidal Inductors
This information is
intended to be used in
assisting the designer in
part selection. Each
application may contain
other variables which
must be considered in
part selection, such as
temperature effects,
waveform distortion, etc.
API Delevan
Sales/Engineering is
available to provide
information as needed to
fit each application.
Data is representative of
a DC current with less
than 1% ripple and an
AC waveform less than:
50 gauss on the
HCT-37X, 25 gauss on
the HCT-44X, 15 gauss
on the HCT-50X and 10
gauss on the
HCT-68X.The effect of
AC or ripple flux can be
significant in many DC
inductor applications.
When significantly
greater AC flux density is
present, it becomes
necessary to consider its
effect on both core loss
and permeability
(inductance).
All data points, on the
above graphs, that
exceed the rated DC
current specified for a
55°C rise from a 25°C
ambient are for design
reference only and are
not intended to imply
continuous use at those
DC current levels.
For frequencies ≤ 10 kHz
(mW/cm
3
)
Hz
Core loss = 1.47 x 10
–8
For frequencies ≥ 10 kHz
(mW/cm
3
)
Hz
Core loss = 9.07 x 10
–10
Bpk
=
Erms 10
8
4.44 Anf
Gauss
f
0.971
B
2.11
Gauss
f
1.26
B
2.11
A:
T37 = 0.064 cm
2
; T44 = 0.099 cm
2
;
T50 = 0.112 cm
2
; T68 = 0.179 cm
2
270 Quaker Rd., East Aurora NY 14052 • Phone 716-652-3600 • Fax 716-652-4814 • E-mail: apisales@delevan.com • www.delevan.com
1/2009
