TYPE 57P
CURRENT SENSE INDUCTORS
FEATURES
Frequency Range of 50Hz to 120Hz.
Fully Encapsulated Construction
Rated for 25 to 480 Amps RMS Sense Current
Operating Temperature Range of -40oC to 125oC
Primary to Secondary Isolation of 3500 VAC
Materials Meets Flammability Requirement of
UL94V-0
APPLICATIONS
Vitec Electronics' Current Sense Inductors shown on this data sheet are the secondary portion of a current
transformer created by the user placing a turn or more through the center hole of the package. The current
flow through the turn or turns installed by the user are detected by Vitec's inductor and is converted to
proportional but smaller current that is then used in the following applications:
Overload Sensing
Ground Fault Detection
Metering
Analog to Digital Circuitry
Power Limiting Controllers in Industrial Applications
+
e
od
teC
Da
V
I
C
E 1
T 83
1
P
RL IL
57
1
E
2
Typical Application Circuit
AF3259
1
12/11
Vitec Electronics Corporation
www.VitecCorp.com
TYPE 57P
CURRENT SENSE INDUCTORS
PACKAGE
57P1831
SCHEMATIC
A
DateCode
E
E
B
1
VITEC
57P1831
0.015-0.025
0.38-0.64
G (lead diameter)
1
2
Dimensions: Inches/mm.
Tolerances: +/- 0.010"/0,25mm unless otherwise noted
F
PACKAGE
57P1832 - 57P1837
2
C
0.220-0.280
5,59-7,11
SCHEMATIC
A
DateCode
E
E
B
1
VITEC
57P183x
0.015-0.025
0.38-0.64
G (lead diameter)
1
3
2
C
0.220-0.280
5,59-7,11
D
F/2
ELECTRICAL CHARACTERISTICS @ +25oC
Classic
RoHS
DIMENSIONS
Turns
DCR
Rated
Current *
RL
Volt per
Ampere
H
#
Ohm
Amp
Ohm
Volts
MIN
+/- 1%
MAX
MAX
MAX
NOM
Lp **
NC
Dimensions: Inches/mm.
Tolerances: +/- 0.010"/0,25mm unless otherwise noted
F
Part Number
2
3
A
B
C
D
E
F
G
MAX
MAX
MAX
NOM
MIN
NOM
NOM
0.800
20,32
0.375
9,54
N/A
0.180
4,57
0.500
12,70
0.032
0,81
57P1831
57PR1831
2.00
1000
38.00
25.00
72.00
0.072
0.670
17,02
57P1832
57PR1832
2.00
1000
24.00
60.00
58.30
0.058
1.050
26,67
1.150
29,21
0.450
11,43
0.300
7,62
0.350
8,89
0.600
15,24
0.032
0,81
57P1833
57PR1833
3.60
1000
24.00
150.00
43.30
0.043
1.190
30,23
1.200
30,48
0.575
14,61
0.400
10,16
0.420
10,67
0.800
20,32
0.032
0,81
57P1834
57PR1834
3.60
1000
20.00
180.00
36.10
0.036
1.375
34,93
1.375
34,93
0.575
14,61
0.400
10,16
0.540
13,72
1.000
25,40
0.032
0,81
57P1835
57PR1835
4.20
1000
18.00
250.00
36.00
0.036
1.550
39,37
1.550
39,37
0.640
16,26
0.400
10,16
0.570
14,48
1.200
30,48
0.032
0,81
57P1836
57PR1836
5.00
1000
15.00
330.00
33.30
0.033
1.750
44,45
1.750
44,45
0.640
16,26
0.400
10,16
0.690
17,53
1.400
35,56
0.032
0,81
57P1837
57PR1837
5.00
1000
10.00
480.00
37.50
0.037
2.200
55,88
2.200
55,88
0.870
22,10
0.500
12,70
0.880
22,35
1.800
45,72
0.040
1,02
Notes:
* Rated current is for <1% linearity.
** Tested @ 120 Hz, 1 Vrms.
Variations to standard product offering is
also available. Please contact factory.
AF3259
2
12/11
Vitec Electronics Corporation
www.VitecCorp.com
TYPE 57P
CURRENT SENSE INDUCTORS
57P1831 LINEARITY GRAPH
Input vs. Output Current with 72 Ohms Load
57P1832 LINEARITY GRAPH
Input vs. Output Current with 58.3 Ohms Load
170
Inductor Current (mAMP)
Inductor Current (mAMP)
85
75
65
e
urv
al C
e
d
I
e
urv
al C
u
t
Ac
55
45
35
25
15
150
rve
Cu
l
a
rve
Ide
Cu
l
tua
Ac
130
110
90
70
50
30
5
10
5
15
25
35
45
55
1 Turn Current (AMP)
65
75
85
10
57P1833 LINEARITY GRAPH
Input vs. Output Current with 43.3 Ohms Load
30
50
70
90 110
1 Turn Current (AMP)
130
150
170
57P1834 LINEARITY GRAPH
Input vs. Output Current with 36.1 Ohms Load
525
475
ve
ur
lC
a
rve
Ide
Cu
l
tua
Ac
300
260
220
Inductor Current (mAMP)
Inductor Current (mAMP)
340
180
140
100
60
ve
ur
lC
a
rve
Ide
Cu
l
tua
Ac
425
375
325
275
225
175
125
75
20
25
20
60
100 140 180 220
1 Turn Current (AMP)
260
300
340
25
57P1835 LINEARITY GRAPH
Input vs. Output Current with 36.0 Ohms Load
75
125 175 225 275 325 375 425 475 525
1 Turn Current (AMP)
57P1836 LINEARITY GRAPH
Input vs. Output Current with 33.3 Ohms Load
520
450
Inductor Current (mAMP)
Inductor Current (mAMP)
510
rve
Cu
l
e
a
urv
Ide
lC
a
tu
Ac
390
330
270
210
150
90
30
440
rve
Cu
l
e
a
urv
Ide
lC
a
tu
Ac
360
280
200
120
40
30
90
150 210 270 330
1 Turn Current (AMP)
390
450
510
40
120
200
280
360
1 Turn Current (AMP)
440
AF3259
3
520
12/11
Vitec Electronics Corporation
www.VitecCorp.com
TYPE 57P
CURRENT SENSE INDUCTORS
57P1837 LINEARITY GRAPH
Input vs. Output Current with 37.5 Ohms Load
ENVIRONMENTAL & RELIABILITY
540
Storage temperature: -40oC to +125oC
Inductor Current (mAMP)
490
rve
Cu
l
e
a
urv
Ide
C
l
tua
Ac
440
390
340
Operating temperature: -40oC to +125oC
Marking permanency: Tested per JESD 22-B107-A
290
Solderability: Tested per MIL-STD-750D
240
190
140
90
40
40
90
140 190 240 290 340 390 440 490 540
1 Turn Current (AMP)
ABOUT US
Vitec Electronics Corporation, founded in 1986, is a worldwide leader in the design, manufacture and sale of magnetic
solutions. Vitec's market focus includes the power, power conditioning, telecom, networking, communications and
computing. Vitec has also established strong alliances with chip manufacturers whereby magnetic solutions are
designed in conjunction with unique silicon requirements and are offered as reference designs by the chip companies.
With its Corporate Headquarters and Research & Development center located in Carlsbad, California, and its state of
the art manufacturing facility and material sourcing in China, Vitec is uniquely positioned to supply the latest
technology at the lowest cost. Vitec offers both standard and custom product design capabilities with all of its facilities
being ISO certified.
QUALITY POLICY
Vitec will provide products and services that meet or exceed our Customer's requirements, conform to company
policies and standards, and exhibit continuously improving levels of Quality.
COMMITMENT
VITEC Electronics empowers each of its employees by providing a business environment that encourages a
commitment to excellence, a sense of ownership and personal accountability to all Vitec Customers.
Competitive Pricing, Quality Products, and On Time Deliveries are expected from today’s W orld Class Magnetics
Suppliers. The high standards of today’s customer are strengthening the dedication and commitment of VITEC
Electronics to provide Total Customer Service.
VITEC ELECTRONICS CORPORATION
6213 El Camino Real
Carlsbad, CA 92009
U.S.A.
ASIA
USA
CONTACT US
SHANGHAI VITEC ELECTRONICS CO., LTD.
3369 He Chuan Road
Min Hang District, Shanghai, 201103
China
TEL: +86 (21) 6446-4828
FAX: +86 (21) 6446-4865
TEL: +1 (760) 918-8831
FAX: +1 (760) 918-8840
AF3259
4
12/11
Vitec Electronics Corporation
www.VitecCorp.com