2

Technical Data ELX1187

Effective April 2022

ECST1V0805

SMT current sense transformer

www.eaton.com/electronics

Product specifications

Part number3

Turns ratio

sec:pri

Secondary

inductance (µH)

@ 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

ECST1V0805-1020-R

20:1

80

0.4

0.7

500 Vac

10

ECST1V0805-1030-R

30:1

180

0.87

0.7

500 Vac

10

ECST1V0805-1040-R

40:1

320

1.14

0.7

500 Vac

10

ECST1V0805-1050-R

50:1

500

1.85

0.7

500 Vac

10

ECST1V0805-1060-R

60:1

730

2.3

0.7

500 Vac

10

ECST1V0805-1070-R

70:1

980

4.75

0.7

500 Vac

10

ECST1V0805-1100-R

100:1

2000

5.5

0.7

500 Vac

10

ECST1V0805-1125-R

125:1

3000

11.5

0.7

500 Vac

10

Mechanical parameters, schematic, pad layout (mm)

Dimension

Value

A

8.38 maximum

B

8.00 maximum

C

5.50 maximum

D

1.85 ±0.3

E

0.6

F

0.25 ref

G

0.7 ±0.2

1. Primary current of 10 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: ECST1V0805-1xxx-R

ECST1V0805 = 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 1 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