Input Specification

    Characteristics

    Conditions

    Voltage Range

    2:1 Range:

  18 ~ 36 VDC
  36 ~ 75 VDC
  

    Filter

     type

   Output Specification

    Characteristics

    Conditions

    Output Power

    20 Watt  (max.)

    Voltage Accuracy
    (Full Load and Nominal Vin)

    Single:

  ±2%

    Minimum Load     (at Full Load)

    Line Regulation    
    (1 to 10 at Full Load)

    Single:

  ±0.5%

(typ.)

    Load Regulation     
    (1 to 10 at Full Load) 
     
    

    Single:

  ±1%

(typ.)

    Ripple    (20MHz bandwidth)

    110mV (Vp-p)

(max.)

    Noise    (20MHz bandwidth)

    220mV (Vp-p)

(max.)

    Temperature Coefficient

    ±0.02% / °C  (max.)

    Short Circuit Protection

    Current limit, Auto-recovery

   General Specification

    Characteristics

    Conditions

    Switching Frequency

    400K Hz  (typ.)

    Isolation Voltage  (Input to Output)

    1600 VDC  (min.)

    Operating Temperature

    -25°C to +70°C  (with derating)

    Storage Temperature

    -55°C to +105°C

    Humidity

    95% RH  (max.)

    Cooling

    Free air convection

   Physical Specification

    Characteristics

    Conditions

    Dimension    (Tolerance ±0.5)

    50.1 x 25.4 x 10.8 mm

    1.97 x 1.0 x 0.425 inches

    Weight

    32 g

    Case Material

    Six-side shielded Aluminum with Non-Conductive base, Black Anodize

Model No.
(Ordering Part No.)

Input Range

Output Voltage

Output Current

Eff

( V.AC )

( V.DC )

( mA )

( % )

Single Output Models

 ST20-24-2.5S-A5

18 ~ 36 VDC

 2.5  

 4000

83

 ST20-24-3.3S-A5

18 ~ 36 VDC

 3.3  

 4000

86

 ST20-24-5S-A5

18 ~ 36 VDC

 5  

 4000

87

 ST20-48-2.5S-A2

36 ~ 75 VDC

 2.5  

 4000

83

 ST20-48-3.3S-A2

36 ~ 75 VDC

 3.3  

 4000

86

 ST20-48-5S-A2

36 ~ 75 VDC

 5  

 4000

87