603 current sense transformers

SMD Current Sense Transformer (603 Series)

West Coast Magnetics’ 603 series current sense transformers are an excellent choice for sensing current to 20 amps in a low profile SMD package. Designed for switching power supply applications, they will accommodate frequencies from 100 kHz to 1 MHz with excellent linearity. The product also provides 3000 Vac isolation between the current and sense windings for safety agency compliance.

Size Code Turns Inductance min.(microhenries) DCR (mΩnom,sense) V out (Volts) I in (Amps) Terminating Resistor (Ω) Hypot Current to Sense
603-1 10 78 15 1 1 10 3000 Vac
603-2 16 196 38 1 1 16 3000 Vac
603-3 25 480 93 1 1 25 3000 Vac
603-4 40 1224 235 1 1 40 3000 Vac
603-5 10 82 11 1 1 10 3000 Vac
603-6 16 210 27 1 1 16 3000 Vac
603-7 25 351 68 1 1 25 3000 Vac
603-8 40 1330 173 1 1 40 3000 Vac
603-9 10 124 14 1 1 10 3000 Vac
603-10 16 317 34 1 1 16 3000 Vac
603-11 25 832 84 1 1 25 3000 Vac
603-12 40 1982 215 1 1 40 3000 Vac

 603schematic_sm


 

Size Code L W H s d X Y
603-1
603-2
603-3
603-4
.430/10.9 .430/10.9 .250/6.4 .030/0.8 .060/1.5 .307/7.8 .307/7.8
603-5
603-6
603-7
603-8
.530/13.5 .530/13.5 .290/7.4 .030/0.8 .060/1.5 .400/10.2 .400/10.2
603-9
603-10
603-11
603-12/
.630/16.0 .630/16.0 .310/7.9 .030/0.8 .070/1.8 .495/12.6 .495/12.6

 

Note: All materials of construction minimum Class B 130 degrees C rated.

Dimensions: Inches/mm

Peak Sense Current vs Frequency of Operation (Amps)

 

Size Code 100kHz 200kHz 400kHz 600kHz 1 MHz
603-1 NA NA 10 9 6
603-2 NA 10 10 10 10
603-3 NA 10 10 10 10
603-4 10 10 10 10 NA
603-5 NA NA NA NA 9
603-6 NA NA 15 15 15
603-7 15 15 15 15 NA
603-8 15 15 15 15 NA
603-9 NA NA NA 15 12
603-10 NA 20 20 20 20
603-11 20 20 20 20 NA
603-12 20 20 20 20 NA

Notes:

  1. Nominal 100% duty cycle current is approximately half peak value.
  2. For fully optimal performance, operate in recommended areas only. Within these ranges magnetizing current will be less than 1% of peak rated sense current and temperature rise will not exceed 40°C. Check with West Coast Magnetics for operation outside recommended areas.

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