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Current Sense Transformers

 

SURFACE MOUNT CURRENT SENSE TRANSFORMERS:

PICO ELECTRONICS, Inc. has developed a new series of Current Sense Transformers. This new 38000 Series of transformers come in three different sizes in both thru hole and surface mount packages.
The CURRENT SENSE TRANSFORMER is used for monitoring and controlling circuits as well as detecting changing loads in Power Supplies. These devices are used in a variety of applications which includes automotive, industrial, medical, and aerospace applications.
Because of the advantages of sensing the current while maintaining the electrical isolation, these devices are suitable in designing power supplies. Compared to different techniques or current measurement, the Current Sense Transformers offer higher efficiency, accuracy and are less sensitive to temperature shifts.
 

Specifications

  • MIL-PRF-27:ALL UNITS MANUFACTURED TO MIL-PRF-27, Grade 5, Class S
  • OPERATING TEMPERATURE: -55º C to +130º C 
  • DIELECTRIC WITHSTANDING VOLTAGE: 500Vac 
  • INSULATION RESISTANCE: 10K MegaOhms at 500 V DC 
  • FREQUENCY RANGE:50KHz to 500 KHz
  • CURRENT RATING: 5 to 20 Amps 
  • TURNS RATIO: from 1:30 up to 1:100 
  • Terminals:  Meets solderability per MIL-STD-202, Method 208.

Schematic for Current Sense Transformer

SURFACE MOUNT PART NUMBER SECONDARY
INDUCTANCE
(Minimum)
(mH)
PRIMARY
CURRENT
(Amps)
TURNS
RATIO
SECONDARY
DC RESISTANCE
(Ohms)
SIZE PRICE
(1-9)
(USD)
38100SM
38105SM
38110SM
38115SM
38120SM
38125SM
0.49
0.87
1.36
1.95
2.66
5.40
5
5
5
5
5
5
1:30
1:40
1:50
1:60
1:70
1:100
0.137
0.280
0.440
0.670
1.230
3.550
1
1
1
1
1
1
46.19
46.19
46.19
46.19
46.19
46.19
38200SM
38205SM
38210SM
38215SM
38220SM
38225SM
1.62
2.90
4.50
6.50
8.82
18.0
15
15
15
15
15
15
1:30
1:40
1:50
1:60
1:70
1:100
0.027
0.150
0.300
0.440
0.830
2.150
2
2
2
2
2
2
46.19
46.19
46.19
46.19
46.19
46.19
38300SM
38305SM
38310SM
38315SM
38320SM
38325SM
2.40
4.27
6.67
9.60
13.07
26.66
20
20
20
20
20
20
1:30
1:40
1:50
1:60
1:70
1:100
0.055
0.082
0.160
0.300
0.440
1.230
3
3
3
3
3
3
50.79
50.79
50.79
50.79
50.79
50.79
**Discount Prices: 
  • 1-9 Net;
    10-24 less 10%;
    25-49 less 16%; 
    50-99 less 23%;
    100-499 less 30% 

 

Surface Mount Mechanical Drawing

 

 

SURFACE MOUNT DIMENSIONS

SIZE HEIGHT A B C D E

F

1 0.180
(4.57)

0.380
(9.65)

0.280
7.11

0.025
(0.64)

0.015
(0.38)

0.500
(12.7)

0.060
(1.52)

2 0.270
(6.86)
0.550
(13.97)
0.400
(10.16)
0.030
(0.76)
0.015
(0.38)
0.670
(17.02)
0.060
(1.52)
3 0.350
(8.9)
0.650
(16.51)
0.500
(12.7)
0.030
(0.76)
0.020
(0.51)
0.770
(19.56)
0.060
(1.52)

Dimensions are in inches. ( ) = millimeters

 

RECOMMENDED LAND PATTERN

 

 

SIZE 1

RECOMMENDED LAND PATTERN

 

 

SIZE 2

RECOMMENDED LAND PATTERN

 

 

SIZE 3

 

 

Ordering Instructions: 
  • No minimum. 
    Net 30 days F.O.B. Pelham, NY

    Delivery--stock to one week for sample orders.

For immediate engineering assistance or to place an order:
Call Toll Free: 800-431-1064

PICO Electronics, Inc.

143 Sparks Ave. Pelham, NY 10803-1810
Tel: 914-738-1400 or Fax: 914-738-8225

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