Datasheet

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All specifications valid at nominal input voltage, full load and +25°C after warm-up time unless otherwise stated.
DC/DC Converters
THN 20WI Series 20 Watt
General Specifications
Temperature ranges – Operating without heat sink –40°C to +75°C (with derating)
– Operating with heat sink –40°C to +85°C (with derating)
– Case temperature +105°C max.
– Storage –55°C to +125°C
Power derating – Operating without heat sink 2.0 %/K above 60°C
– Operating with heat sink 2.0 %/K above 70°C
Thermal impedance – Natural convection 17.6°C/W
– Natural convection with heat sink 14.8°C/W
Humidity (non condensing) 5 % to 95 % rel H max.
Reliability, calculated MTBF (MIL-HDBK-217F, at +25°C, ground benign) >1.4 Mio. h
Isolation voltage (60sec.) – Input/Output 1’500 VDC
Isolation capacitance – Input/Output 1000 pF typ.
Isolation resistance – Input/Output (500 VDC) >1’000 MOhm
Remote On/Off – On: 3.0 ... 15 VDC or open circuit
– Off: 0 ... 1.2 VDC or short circuit pin 6 and pin 2
– Off idle current: 1.5 mA
Switching frequency (fixed) 330 kHz typ. (pulse width modulation PWM)
Vibration and thermal shock EN 61373, MIL-STD-810F
Safety standards – UL/cUL UL 60950-1, 2nd Edition, 2007-03-27
CSA C22.2 No. 60950-1-07, 2nd Ed. 2007-03
– CB IEC 60950-1:2005 (2nd Edition); Am 1:2009
EN 60950-1:2006/A11:2009/A1:2010
– Certification documents www.tracopower.com/overview/thn20wi
Physical Specifications
Casing material nickel coated copper
Baseplate non conductive FR4
Potting material silicone (UL 94V-0 rated)
Weight 15 g (0.53oz)
Soldering temperature max. 265°C / 10 sec.
Environmental compliance – Reach www.tracopower.com/overview/thn20wi
– RoHS RoHS directive 2011/65/EU
Supporting Documents: www.tracopower.com/overview/thn20wi