PM-187
TOROID (LCPI)
Description
• Low loss, powdered iron cores with stable
electrical operating characteristics maximize
inductor efficiency by minimizing copper losses
• Available in vertical and horizontal self leaded and head-
er mounted configurations
• Inductance values range from 10uH to 1000uH
• Current values range from 1.5 to 29.5 Amps
• Meets UL 94V-0 flammability standard
• Powder Iron core material
Applications
• Filters
• Buck and boost switches
• Chokes
Environmental Data
• Storage temperature range: -40°C to +105°C
• Operating ambient temperature range: -40°C to +75°C
(range is application specific)
Packaging
• Supplied in bulk packaging
LOW COST POWER INDUCTORS
Toroidal Inductors
V
V
e
e
r
r
t
t
i
i
c
c
a
a
l
l
H
H
o
o
r
r
i
i
z
z
o
o
n
n
t
t
a
a
l
l
H
H
e
e
a
a
d
d
e
e
r
r
M
M
o
o
u
u
n
n
t
t
e
e
d
d
I
I
n
n
d
d
u
u
c
c
t
t
a
a
n
n
c
c
e
e
O
O
C
C
L
L
(
(
1
1
)
)
I
I
D
D
C
C
(
(
2
2
)
)
I
I
S
S
A
A
T
T
(
(
3
3
)
)
V
V
o
o
l
l
t
t
-
-
μ
μ
S
S
e
e
c
c
(
(
4
4
)
)
E
E
n
n
e
e
r
r
g
g
y
y
(
(
5
5
)
)
D
D
C
C
R
R
(
(
Ω
Ω
)
)
(
(
6
6
)
)
P
P
a
a
r
r
t
t
N
N
u
u
m
m
b
b
e
e
r
r
P
P
a
a
r
r
t
t
N
N
u
u
m
m
b
b
e
e
r
r
P
P
a
a
r
r
t
t
N
N
u
u
m
m
b
b
e
e
r
r
μ
μ
H
H
(
(
r
r
a
a
t
t
e
e
d
d
)
)
μ
μ
H
H
+
+
/
/
-
-
2
2
0
0
%
%
A
A
m
m
p
p
e
e
r
r
e
e
s
s
A
A
m
m
p
p
e
e
r
r
e
e
s
s
V
V
μ
μ
S
S
μ
μ
J
J
m
m
a
a
x
x
CTX10-1-52-R CTX10-1-52LP-R CTX10-1-52M-R 10 10.14 2.4 2.1 5.4 15 0.0481
CTX20-1-52-R CTX20-1-52LP-R CTX20-1-52M-R 20 20.22 1.8 2.2 7.8 36 0.0829
CTX50-1-52-R CTX50-1-52LP-R CTX50-1-52M-R 50 50.29 2.6 2.7 16.3 130 0.0715
CTX100-1-52-R CTX100-1-52LP-R CTX100-1-52M-R 100 100.40 2.5 2.4 27.5 197 0.1060
CTX150-1-52-R CTX150-1-52LP-R CTX150-1-52M-R 150 151.70 2.1 2.3 35.7 283 0.1620
CTX250-1-52-R CTX250-1-52LP-R CTX250-1-52M-R 250 250.90 1.9 2.2 47.8 421 0.2210
CTX500-1-52-R CTX500-1-52LP-R CTX500-1-52M-R 500 505.00 1.7 1.9 77.9 645 0.3610
CTX750-1-52-R CTX750-1-52LP-R CTX750-1-52M-R 750 754.40 1.8 2.4 114.3 1530 0.4340
CTX1000-1-52-R CTX1000-1-52LPR CTX1000-1-52M-R 1000 1004.00 1.5 2.1 131.9 1530 0.6380
CTX10-2-52-R CTX10-2-52LP-R CTX10-2-52M-R 10 9.60 4.7 4.5 6.6 68 0.0183
CTX20-2-52-R CTX20-2-52LP-R CTX20-2-52M-R 20 19.60 3.2 3.2 9.4 69 0.0392
CTX50-2-52-R CTX50-2-52LP-R CTX50-2-52M-R 50 50.00 4.9 4.9 21.3 420 0.0326
CTX100-2-52-R CTX100-2-52LP-R CTX100-2-52M-R 100 101.70 4.4 4.3 35.0 643 0.0534
CTX150-2-52-R CTX150-2-52LP-R CTX150-2-52M-R 150 148.00 4.3 4.0 47.6 829 0.0719
CTX250-2-52-R CTX250-2-52LP-R CTX250-2-52M-R 250 251.10 4.2 4.2 66.0 1540 0.0833
CTX500-2-52-R CTX500-2-52LP-R CTX500-2-52M-R 500 499.40 3.1 3.3 104.0 1890 0.1830
CTX750-2-52-R CTX750-2-52LP-R CTX750-2-52M-R 750 749.30 3.4 3.4 147.3 2960 0.2080
CTX10-5-52-R CTX10-5-52LP-R CTX10-5-52M-R 10 9.68 8.7 11.1 9.4 417 0.0104
CTX20-5-52-R CTX20-5-52LP-R CTX20-5-52M-R 20 21.25 7.8 9.3 16.0 643 0.0260
CTX50-5-52-R CTX50-5-52LP-R CTX50-5-52M-R 50 49.60 7.6 9.4 29.3 1530 0.0248
CTX100-5-52-R CTX100-5-52LP-R CTX100-5-52M-R 100 97.20 8.2 7.5 45.7 1890 0.0267
CTX150-5-52-R CTX150-5-52LP-R CTX150-5-52M-R 150 150.60 7.7 7.5 66.0 2960 0.0401
CTX250-5-52-R CTX250-5-52LP-R 250 254.40 9.2 8.1 102.4 5860 0.0400
CTX10-7-52-R CTX10-7-52LP-R CTX10-7-52M-R 10 10.04 11.4 13.5 11.0 640 0.0080
CTX20-7-52-R CTX20-7-52LP-R CTX20-7-52M-R 20 20.96 11.4 14.5 19.1 1540 0.0110
CTX50-7-52-R CTX50-7-52LP-R CTX50-7-52M-R 50 52.27 10.5 10.2 33.5 1900 0.0163
CTX100-7-52-R CTX100-7-52LP-R 100 101.40 12.0 9.1 54.2 2960 0.0167
CTX150-7-52-R CTX150-7-52LP-R 150 152.80 12.8 10.5 79.3 5900 0.0204
CTX10-10-52-R CTX10-10-52LP-R 10 10.04 16.9 20.9 13.2 1530 0.0051
CTX20-10-52-R CTX20-10-52LP-R 20 21.17 16.0 16.0 21.3 1900 0.0070
CTX50-10-52-R CTX50-10-52LP-R 50 52.37 13.9 12.7 38.9 2960 0.0124
CTX100-10-52-R CTX100-10-52LPR 100 99.38 17.6 13.0 64.0 5880 0.0109
CTX10-16-52-R CTX10-16-52LP-R 10 9.90 27.3 29.3 16.9 2970 0.0032
CTX20-16-52-R CTX20-16-52LP-R 20 19.24 31.5 29.5 28.1 5860 0.0034
Notes: (1) Open circuit inductance test parameters: 100kHz, 0.250Vrms, 0 Adc.
(2)
DC current for an approximate ΔT of 30°C at 75°C Ambient with no core loss. See Chart 2 for derating of IDC with core loss.
(3) Peak current for an approximate 30% roll-off in OCL. For other current levels see Chart 1.
(4) Applied Volt-Time product (VμS) across the inductor. This value represents the VμS at 100kHz necessary to generate a core loss equal to 10% of the total
losses for 30°C rise. For other frequencies and operating levels see Chart 2. (Note: skin effect losses not included.)
(5) Energy storage (μJ) at ISAT. For other current levels see Chart 1.
(6) Maximum D.C. resistance at 20°C.
Family Table
RoHS
2002/95/EC
PM-188
TOROID (LCPI)
Vertical and Horizontal Self Leaded Mounting Options
V
V
e
e
r
r
t
t
i
i
c
c
a
a
l
l
P
P
/
/
N
N
H
H
o
o
r
r
i
i
z
z
o
o
n
n
t
t
a
a
l
l
P
P
/
/
N
N
O
O
D
D
I
I
D
D
H
H
t
t
X
X
Y
Y
T
T
H
H
S
S
e
e
e
e
F
F
i
i
g
g
u
u
r
r
e
e
1
1
S
S
e
e
e
e
F
F
i
i
g
g
u
u
r
r
e
e
2
2
(
(
m
m
a
a
x
x
)
)
(
(
t
t
y
y
p
p
)
)
(
(
m
m
a
a
x
x
)
)
(
(
t
t
y
y
p
p
)
)
(
(
t
t
y
y
p
p
)
)
(
(
t
t
y
y
p
p
)
)
(
(
t
t
y
y
p
p
)
)
CTX10-1-52-R CTX10-1-52LP-R 8.6 0.0 4.7 3.8 7.3 0.42 0.67
CTX20-1-52-R CTX20-1-52LP-R 9.1 0.0 6.7 5.6 7.4 0.37 0.62
CTX50-1-52-R CTX50-1-52LP-R 16.2 4.2 9.0 7.5 13.7 0.58 0.83
CTX100-1-52-R CTX100-1-52LP-R 15.5 4.2 12.4 10.7 13.7 0.58 0.83
CTX150-1-52-R CTX150-1-52LP-R 20.7 6.6 9.4 7.8 18.8 0.52 0.77
CTX250-1-52-R CTX250-1-52LP-R 20.9 6.0 13.0 11.0 18.8 0.52 0.77
CTX500-1-52-R CTX500-1-52LP-R 24.0 9.0 15.3 14.0 21.2 0.52 0.77
CTX750-1-52-R CTX750-1-52LP-R 29.8 11.7 17.4 15.6 28.2 0.52 0.77
CTX1000-1-52-R CTX1000-1-52LP-R 29.8 11.7 17.1 15.5 28.0 0.46 0.71
CTX10-2-52-R CTX10-2-52LP-R 12.7 0.0 7.8 6.3 11.0 0.71 0.96
CTX20-2-52-R CTX20-2-52LP-R 12.5 0.0 7.5 6.3 11.0 0.58 0.83
CTX50-2-52-R CTX50-2-52LP-R 21.6 6.1 13.6 11.0 19.5 0.89 1.14
CTX100-2-52-R CTX100-2-52LP-R 24.0 8.8 16.6 13.9 21.8 0.89 1.14
CTX150-2-52-R CTX150-2-52LP-R 30.6 11.2 11.4 9.3 28.5 0.80 1.05
CTX250-2-52-R CTX250-2-52LP-R 31.2 9.1 19.0 15.7 28.5 0.89 1.14
CTX500-2-52-R CTX500-2-52LP-R 36.7 11.7 14.8 12.5 34.5 0.71 0.96
CTX750-2-52-R CTX750-2-52LP-R 43.3 19.9 18.2 15.8 41.5 0.80 1.05
CTX10-5-52-R CTX10-5-52LP-R 22.2 5.4 13.9 11.5 19.9 1.11 1.36
CTX20-5-52-R CTX20-5-52LP-R 24.5 8.8 16.6 14.5 22.0 0.89 1.14
CTX50-5-52-R CTX50-5-52LP-R 32.3 10.1 18.9 16.5 28.8 1.11 1.36
CTX100-5-52-R CTX100-5-52LP-R 37.8 11.2 16.8 13.6 35.5 1.24 1.49
CTX150-5-52-R CTX150-5-52LP-R 46.4 18.8 19.8 16.8 43.4 1.24 1.49
CTX250-5-52-R CTX250-5-52LP-R 53.7 18.8 24.3 20.1 49.4 1.38 1.63
CTX10-7-52-R CTX10-7-52LP-R 25.7 6.5 18.0 16.0 22.4 1.38 1.63
CTX20-7-52-R CTX20-7-52LP-R 32.4 8.5 19.8 16.8 29.2 1.38 1.63
CTX50-7-52-R CTX50-7-52LP-R 39.0 10.8 16.8 13.9 35.7 1.38 1.63
CTX100-7-52-R CTX100-7-52LP-R 48.5 17.1 21.8 17.2 43.4 1.73 1.98
CTX150-7-52-R CTX150-7-52LP-R 54.5 17.1 25.4 21.2 50.9 1.73 1.98
CTX10-10-52-R CTX10-10-52LP-R 34.0 7.0 21.4 17.0 29.6 1.73 1.98
CTX20-10-52-R CTX20-10-52LP-R 40.5 9.0 18.0 14.3 35.2 1.73 1.98
CTX50-10-52-R CTX50-10-52LP-R 47.5 17.1 21.3 17.5 42.8 1.73 1.98
CTX100-10-52-R CTX100-10-52LP-R 57.0 15.0 27.5 21.3 50.6 2.15 2.45
CTX10-16-52-R CTX10-16-52LP-R 50.3 13.0 24.0 18.6 43.0 2.41 2.70
CTX20-16-52-R CTX20-16-52LP-R 59.0 13.0 28.0 23.0 50.7 2.69 2.99
Note: All dimensions are in millimeters.
Ht
T dia.
(typ.)
T dia.
(typ.)
T dia.
10.0 +/- 3
Ht
X
10.0 +/- 3
OD
OD ID ID
Y
H dia
(typ.)
H dia
(typ.)
H dia.
(typ.)
H dia.
(typ.)
VERTICAL
SELF LEADED
MOUNT
HORIZONTAL
SELF LEADED
MOUNT
Drawings are not to scale.
FIGURE 1 FIGURE 2
Mechanical Diagrams
LOW COST POWER INDUCTORS
Toroidal Inductors
PM-189
TOROID (LCPI)
HEADER MOUNT
Header Mounted Option
H
H
e
e
a
a
d
d
e
e
r
r
M
M
o
o
u
u
n
n
t
t
e
e
d
d
S
S
e
e
e
e
O
O
D
D
A
A
B
B
C
C
X
X
Y
Y
T
T
H
H
P
P
a
a
r
r
t
t
N
N
u
u
m
m
b
b
e
e
r
r
F
F
i
i
g
g
u
u
r
r
e
e
#
#
(
(
m
m
a
a
x
x
)
)
(
(
m
m
a
a
x
x
)
)
(
(
m
m
a
a
x
x
)
)
(
(
m
m
a
a
x
x
)
)
(
(
t
t
y
y
p
p
)
)
(
(
t
t
y
y
p
p
)
)
(
(
t
t
y
y
p
p
)
)
(
(
t
t
y
y
p
p
)
)
CTX10-1-52M-R 3 8.6 9.4 9.4 6.9 6.5 6.5 — —
CTX20-1-52M-R 3 9.1 9.4 9.4 9.0 6.5 6.5 — —
CTX50-1-52M-R 4 16.2 19.6 16.1 20.0 15.3 6.4 — —
CTX100-1-52M-R 4 15.5 19.6 16.1 19.7 15.3 6.4 — —
CTX150-1-52M-R 4 20.7 19.6 16.1 24.2 15.3 6.4 — —
CTX250-1-52M-R 5 20.9 31.0 16.0 22.5 20.3 10.2 1.20 1.45
CTX500-1-52M-R 5 24.0 35.4 21.7 25.0 23.0 15.4 1.20 1.45
CTX750-1-52M-R 5 29.8 35.4 21.7 31.6 23.0 15.4 1.20 1.45
CTX1000-1-52M-R 5 29.8 35.4 21.7 31.2 23.0 15.4 1.20 1.45
CTX10-2-52M-R 3 12.7 13.6 11.4 11.7 10.8 7.5 — —
CTX20-2-52M-R 3 12.5 13.6 11.4 11.4 10.8 7.5 — —
CTX50-2-52M-R 5 21.6 31.0 16.0 23.5 20.3 10.2 1.20 1.45
CTX100-2-52M-R 5 24.0 35.4 21.7 26.0 23.0 15.4 1.20 1.45
CTX150-2-52M-R 5 30.6 31.0 16.0 32.5 20.3 10.2 1.20 1.45
CTX250-2-52M-R 5 31.2 35.4 21.7 33.4 23.0 15.4 1.20 1.45
CTX500-2-52M-R 5 36.7 31.0 16.0 38.4 20.3 10.2 1.20 1.45
CTX750-2-52M-R 5 43.3 35.4 21.7 45.4 23.0 15.4 1.20 1.45
CTX10-5-52M-R 5 22.2 31.0 16.0 22.7 20.3 10.2 1.20 1.45
CTX20-5-52M-R 5 24.5 35.4 21.7 25.5 23.0 15.4 1.20 1.45
CTX50-5-52M-R 5 32.3 35.4 21.7 33.7 23.0 15.4 1.11 1.36
CTX100-5-52M-R 5 37.8 35.4 21.7 40.2 23.0 15.4 1.24 1.49
CTX150-5-52M-R 5 46.4 35.4 21.7 47.0 23.0 15.4 1.24 1.49
CTX10-7-52M-R 5 25.7 35.4 21.7 26.7 23.0 15.4 1.38 1.63
CTX20-7-52M-R 5 32.4 35.4 21.7 34.2 23.0 15.4 1.38 1.63
CTX50-7-52M-R 5 39.0 35.4 21.7 40.3 23.0 15.4 1.38 1.63
Note: All dimensions are in millimeters.
Drawings are not to scale.
FIGURE 3 FIGURE 4 FIGURE 5
0.50d
ia.
ia.
(typ.)(typ.)
C
3.
3.
8+
8+/- 1
Y
X
B
A
2
2
3
3
1
1
4
4
0.70dia.(typ.)
0.70dia.(typ.)
C
4.0+
0+/-
1
4.0 - 1
B
Y
OD
2
2
3
3
1
14
4
X
A
1.25dia.(typ.)
1.25dia.(typ.)
1.0
0d
ia.
ia.
(typ.)
1.00
(typ.)
C
OD
4.25+/- 1.54.25+/- 1.5
B
Y
Pins1&3s1&3:Tdia.ia.
Pins2&4s2&4:1.21.20dia.ia.
Holes1&3s1&3:Hdia.dia.
Holes2&4s2&4:1.45dia.
A
1
2
4
3
2
1
3
4
X
CONNECTION DIA-
GRAM
1
3
LOW COST POWER INDUCTORS
Toroidal Inductors
PM-190
TOROID (LCPI)
Inductance Characteristics
Core Loss
0
20
40
50
60
70
80
90
20 kHz
50 kHz
100 kHz
200 kHz
500 kHz
% of Losses from Irms (maximum)
% of applied Volt-μ Seconds
92
94
95
96
97
98
99
10
20
30
40
50
60
80
100
200
300
400
500
600
800
1000
1000
800
600
500
400
300
200
100
80
60
50
40
30
20
10
050
Inductance
% OF ISA T
% of OCL or % of Energy
Energy
100 150 200 250 300
LOW COST POWER INDUCTORS
Toroidal Inductors
