2

Technical Data ELX1186

Effective April 2022

ECST1V0703

SMT current sense transformer

www.eaton.com/electronics

Product specifications

Part number3

Turns ratio

sec:pri

Secondary

inductance (mH)

@ 100 kHz 0.1 V

minimum

DCR sec (Ω)

maximum

DCR pri (mΩ)

reference

Hi-pot pri to sec

@ 2 mA 3 seconds

50 Hz

Sensed

current1 (A)

maximum

ECST1V0703-1020-R

20:1

0.053

0.42

1.5

500 Vac

9

ECST1V0703-1050-R

50:1

0.333

2.76

1.5

500 Vac

9

ECST1V0703-1070-R

70:1

0.652

5.04

1.5

500 Vac

9

ECST1V0703-1100-R

100:1

1.33

10.68

1.5

500 Vac

9

ECST1V0703-1150-R

150:1

2.99

22.3

1.5

500 Vac

9

Mechanical parameters, schematic, pad layout (mm)

Dimension

Value

A

5.20 maximum

B

7.20 maximum

C

3.00 maximum

D

4.05

E

0.4

F

1.1

G

2.6

H

1.2

I

1.1

J

1.2

1. Primary current of 9 A causes less than 40°C temperature rise @ +25°C ambient. Higher current causes a greater

temperature rise

2. Electrical specifications at +25 °C

3. Part Number Definition: ECST1V0703-1xxx-R

ECST1V0703 = Product code and size

1xxx= Turns ratio sec:pri; 1=pri, xxx=sec; 1020= 20:1

-R suffix = RoHS compliant

Schematic

Recommended PCB Layout

Part marking: White dot, Pin 2 indicator

All soldering surfaces to be coplanar within 0.15 millimeters

Tolerances are ±0.1 millimeters unless stated otherwise

Traces or vias underneath the inductor is not recommended