October 12, 2006
272 Series Current Sense Transformers 25kHz
Features
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Designed for switching mode power supply applications
International safety construction
High dielectric strength capability 3750V RMS
Frequency range 25kHz
Epoxy encapsulated construction
Tinned Leads with Leaded Solder is Available (note 4)
ELECTRICAL SPECIFICATIONS AT 25ºC
Secondary
Rated
Terminated
Resistance
Ohm (Max)
Primary
Unipolar
Amp µSec
Rating
Primary
Bipolar
Amp µSec Peak Sense
Rating
(Max)
1 Turn
Primary
Secondary
Inductance
mH (Min)
Secondary
Inductance
Test Voltage Ohm (Max)
15.75 kHz
Secondary
DCR
Part
Number
Turns
Ratio
Schematic
Figure
Current
Amps (Max)
(Max)
PT27210
PT27211
PT27212
PT27213
PT27214
PT27215
PT27216
PT27217
1:50
1:100
1:200
1:300
1:50CT
1:100CT
1:200CT
1:300CT
5.0
20.0
80.0
180.0
5.0
20.0
80.0
180.0
0.50
1.00
2.00
3.00
0.50
1.00
2.00
3.00
0.70
1.40
4.50
11.00
0.70
1.40
50
100
200
300
50
100
200
300
150
300
600
900
150
300
600
900
300
600
1200
1800
300
600
1200
1800
20
20
20
20
20
20
20
20
A
A
A
A
B
B
B
B
4.50
11.00
Note: (1) Maximum ratings specified with rated secondary terminating resistance and 1 turn primary.
(2) Amp-µSec rating of primary equals to volt µSec rating of secondary when secondary is terminated in rated resistance.
(3) Maximum operating temperature 105°C.
(4) For non-RoHS parts, replace PT prefix with 42- (e.g. PT27210 becomes 42-27210).
(5) Terminal finish is compliant to RoHS requirements
3
1
2
3
4
5
1
2
.700 Max
17.78
5
.900 Max
22.96
Schematic Figure A
3
4
5
1
2
.700 Max
17.78
.010 Min
.25
.170 Min
4.31
Schematic Figure B
.250
6.35
.700
17.78
.500
12.70
Pin No. 1-2 = .051±.003 Dia Inches
Pin No. 3-4-5 = .030±.002 Dia Inches
INCHES .XXX ± .010
MILLIMETERS .XX ± .25
Case for Figure A and B
DATATRONIC: 28151 Highway 74, Romoland, CA 92585 Tel: 951-928-7700 Toll Free Tel: 888-889-5391 Fax: 951-928-7701
Email: ddisales@datatronics.com
499 King’s Road, Hong Kong Tel: (852) 2562 3858, (852) 2564 8477 Fax: (852) 2565 7214, (852) 2563 1290
All specifications are subject to change without notice.