MEV3S1212SC Murata Power Solutions Inc, MEV3S1212SC Datasheet - Page 2

• Manufacturer Part Number: MEV3S1212SC
• Description: CONV DC/DC 3W 12V IN 12V OUT SIP
• Manufacturer: Murata Power Solutions Inc
• Series: MEV3r
• Type: Isolatedr

Specifications of MEV3S1212SC

• Number Of Outputs: 1
• Package / Case: 7-SIP Module (4 Leads)
• Output: 12V
• Power (watts): 3W
• Mounting Type: Through Hole
• Voltage - Input: 10.8 ~ 13.2V
• 1st Output: 12 VDC @ 250mA
• Size / Dimension: 0.77" L x 0.30" W x 0.40" H (19.6mm x 7.6mm x 10.2mm)
• Power (watts) - Rated: 3W
• Operating Temperature: -40°C ~ 85°C
• Efficiency: 88%
• Approvals: UL
• Output Power: 3 W
• Input Voltage Range: 10.8 V to 13.2 V
• Input Voltage (nominal): 12 V
• Output Voltage (channel 1): 12 V
• Output Current (channel 1): 250 mA
• Isolation Voltage: 3 KV
• Package / Case Size: SIP
• Output Type: Isolated Single
• Output Voltage: 12 V
• Product: Isolated
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• 3rd Output: -
• 2nd Output: -
• 4th Output: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 811-2122-5

TEMPERATURE DERATING GRAPH
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 MEV3 series of DC/DC converters are all 100% production tested at their stated isolation voltage. This is 3kVDC for 1 minute.
A question commonly asked is, “What is the continuous voltage that can be applied across the part in normal operation?”
The MEV3 series has been recognized by Underwriters Laboratory for functional insulation. 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 sys-
tem. 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 materials,
construction and environment. The MEV3 series has toroidal isolation transformers, with no additional insulation between primary and secondary windings of enameled wire. While
parts can be expected to 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.
This consideration equally applies to agency recognized parts rated for better than functional isolation where the wire enamel insulation is always supplemented by a further
insulation system of physical spacing or barriers.
The MEV3 series has been recognised by Underwriters Laboratory (UL) to UL 60950 for functional insulation in a maximum ambient temperature of 85ºC and/or case temperature
limit of 130ºC. Case temperature measured on the face opposite the pins. File number E179522 applies.
The MEV3 Series of converters are not internally fused so to meet the requirements of UL 60950 an input line fuse should always be used. An anti-surge 2.5A should be used for
MEV305xxSC models, and an anti-surge 1A should be used for MEV312xxSC models. All fuses should be UL approved and rated to at least the maximum allowable DC input voltage.
SAFETY APPROVAL
RoHS COMPLIANT INFORMATION
www.murata-ps.com
1.5
4.5
3.0
0
-40
Safe Operating Area
Ambient Temperature (°C)
0
50
85°C
100
150
This series is compatible with RoHS soldering systems with a peak wave solder temperature of
260°C for 10 seconds. The pin termination fi nish on the SIP package type is Tin Plate, Hot Dipped
over Matte Tin with Nickel Preplate. They are backward compatible with Sn/Pb soldering systems.
For further information, please visit www.murata-ps.com/rohs
OUTPUT VOLTAGE TOLERANCE ENVELOPE
The voltage tolerance envelope shows typical load regulation characteristics for
this product series. The tolerance envelope is the maximum output voltage varia-
tion due to changes in output loading.
3kVDC Isolated 3W Single Output DC/DC Converters
Technical enquiries email: [e-mail], tel: [phone]
V
5%
NOM
10
25
Output Load Current (%)
50
2010-03-10 KDC_MEV3.B02 Page 2 of 5
MEV3 Series
75
100
0%
-4%
2%