WPN20R24S12C Murata Power Solutions Inc, WPN20R24S12C Datasheet - Page 2

• Manufacturer Part Number: WPN20R24S12C
• Description: DC/DC Converter
• Manufacturer: Murata Power Solutions Inc
• Series: WPN20Rr

Specifications of WPN20R24S12C

• Dc / Dc Converter O/p Type: Fixed
• No. Of Outputs: 1
• Input Voltage: 18V To 36V
• Power Rating: 20W
• Output Voltage: 12V
• Output Current: 1.66A
• Supply Voltage: 24V
• Dc/dc Converter Mounting: Through Hole
• Product: Isolated
• Output Power: 20 W
• Input Voltage Range: 18 V to 36 V
• Input Voltage (nominal): 24 V
• Number Of Outputs: 1
• Output Voltage (channel 1): 12 V
• Output Current (channel 1): 1.66 A
• Isolation Voltage: 1.5 KV
• Package / Case Size: DIP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

TECHNICAL NOTES
ISOLATION VOLTAGE
‘Hi Pot Test’, ‘Flash Tested’, ‘Withstand Voltage’, ‘Proof Voltage’, ‘Dielectric Withstand Voltage’ & ‘Isolation Test Voltage’ are all terms that relate to the same thing, a test voltage,
applied for a specifi ed time, across a component designed to provide electrical isolation, to verify the integrity of that isolation.
Murata Power Solutions WPN20 series of dc/dc converters are all 100% production tested at their stated isolation voltage. This is 1500 Vpk for 10 seconds.
A question commonly asked is, “What is the continuous voltage that can be applied across the part in normal operation?”
The WPN20 series has been recognized by Underwriters Laboratory, both input and output should normally be maintained within SELV limits i.e. less than 42.4V peak, or 60VDC.
The isolation test voltage represents a measure of immunity to transient voltages and the part should never be used as an element of a safety isolation system. The part could be
expected to function correctly with several hundred volts offset applied continuously across the isolation barrier; but then the circuitry on both sides of the barrier must be regarded
as operating at an unsafe voltage and further isolation/insulation systems must form a barrier between these circuits and any user-accessible circuitry according to safety standard
requirements.
REPEATED HIGH-VOLTAGE ISOLATION TESTING
It is well known that repeated high-voltage isolation testing of a barrier component can actually degrade isolation capability, to a lesser or greater degree depending on materi-
als, construction and environment. While manufactured parts can withstand several times the stated test voltage, the isolation capability does depend on the wire insulation. Any
material, including this enamel (typically polyurethane) is susceptible to eventual chemical degradation when subject to very high applied voltages thus implying that the number of
tests should be strictly limited. We therefore strongly advise against repeated high voltage isolation testing, but if it is absolutely required, that the voltage be reduced by 20% from
specifi ed test voltage.
www.murata-ps.com
THERMAL DERATING CURVE
ISOLATION CHARACTERISTICS
Parameter
Rated voltage
Test voltage
Resistance
Capacitance
TEMPERATURE CHARACTERISTICS
Parameter
Specifi cation
Operation
Storage
Thermal shutdown
RoHS COMPLIANCE INFORMATION
Conditions
Ambient (with no derating)
Case (with no derating)
Case
Conditions
60Hz, 10 seconds
This series is compatible with RoHS soldering systems with a peak wave solder temperature of 260ºC
for 10 seconds. The pin termination fi nish on this product series is matte tin (100 microns min.) over
nickel (40-80 microinches min.). The series is backward compatible with Sn/Pb soldering systems.
For further information, please visit www.murata-ps.com/rohs
Technical enquiries email: [e-mail], tel: [phone]
Min.
105
-40
-40
-55
1500
1500
2400
Min.
10
20W Regulated DC/DC Converter
2011/04/05 KDC_WPN20RC.D01 Page 2 of 5
Typ.
Typ.
+100
+125
Max.
+85
115
Max.
WPN20
Units
Units
Vpk
Vpk
GΩ
°C
°C
°C
°C
pF