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All specifications  valid at nominal input voltage, full load and +25°C after warm-up time unless otherwise stated.
Input Specifications
 Input current no load /full load
12 Vin models
24 Vin models
48 Vin models
20 mA / 300 mA typ.
  5 mA / 150 mA typ.
  3 mA /   75 mA typ.
 Start-up voltage /
 under voltage shut down
12 Vin models
24 Vin models
48 Vin models
  6 VDC /   8 VDC typ.
12 VDC / 16 VDC typ.
24 VDC / 32 VDC typ
 Surge voltage
 (1 sec. max.)
12 Vin models
24 Vin models
48 Vin models
  25 V max.
  50 V max.
100 V max.
 Reverse voltage protection
0.5 A max.
 Reflected input ripple current
Can be reduced by ext. 1–2.2 μF polyester film
capacitor
 Input filter
Output Specifications
Pi filter
 Voltage set accuracy
± 1 %
Regulation
– Input variation  Vin min. to Vin max.
– Load variation 10 – 100 %
   – single output models
 – dual output models balanced load
– dual output models unbalanced load
± 0.3 % max.
± 1.0 % max.
± 1.0 % max.
± 2.0 % max.
Ripple and noise
50 mVpk-pk max.
Temperature coefficient
± 0.02 % / °C
 Current limitation
> 110% of Iout max., foldback
Short circuit protection
Hiccup mode, indefinite
(no automatic recovery)
 Capacitive load
– single output models
– dual output models
470 μF
180 μF
General Specifications
Temperature ranges
– Operating
– Case temperature
– Storage
–40 °C ... +75 °C
+100  °C max.
–40 °C ... +125 °C
Humidity 
(non condensing)
95 % rel H max.
Reliability, calculated MTBF 
(MIL-HDBK-217 E)
>1‘000‘000 h @ 25 °C
Isolation voltage
Input/ Output
1‘500 VDC
Isolation capacity
Input/ Output
65 pF typ.
Isolation resistance
Input/ Output
>1‘000 Mohm
Switching frequency
300 kHz typ. (Frequency modulation PFM)
 Safety standards
UL 1950, EN 60950, IEC 60950
Compliance up to 60 VDC input voltage
(SELV limit)
Safety approvals
UL/cUL  File E188913
DC/DC Converter
TES 3 Series             3 Watt