MEA1D2412DC Murata Power Solutions Inc, MEA1D2412DC Datasheet - Page 3

• Manufacturer Part Number: MEA1D2412DC
• Description: CONV DC/DC 1KVDC 1W 24 +-12V TH
• Manufacturer: Murata Power Solutions Inc
• Series: MEA1r
• Type: Isolatedr

Specifications of MEA1D2412DC

• Number Of Outputs: 2
• Output: ±12V
• Power (watts): 1W
• Mounting Type: Through Hole
• Voltage - Input: 21.6 ~ 26.4V
• Package / Case: 14-DIP Module (6 Leads)
• 1st Output: 12 VDC @ 42mA
• 2nd Output: -12 VDC @ 42mA
• Size / Dimension: 0.776" L x 0.394" W x 0.276" H (19.70mm x 10.00mm x 7.00mm)
• Power (watts) - Rated: 1W
• Operating Temperature: -40°C ~ 85°C
• Efficiency: 87%
• Approvals: UL
• Output Power: 1 W
• Input Voltage Range: 21.6 V to 26.4 V
• Input Voltage (nominal): 24 V
• Package / Case Size: DIP-14
• Output Voltage: 12 V
• Product: Isolated
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• 3rd Output: -
• 4th Output: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

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 MEA1 series of DC/DC converters are all 100% production tested at their stated isolation voltage. This is 1kVDC for 1 second.
A question commonly asked is, “What is the continuous voltage that can be applied across the part in normal operation?”
The MEA1 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 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 materials,
construction and environment. The MEA1 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 MEA1 series has been recognized by Underwriters Laboratory (UL) to UL 60950 for functional insulation in a maximum ambient temperature of 85°C and/or case temperature
limit of 130°C (case temperature measured on the face opposite the pins). File number E179522 applies.
The MEA1 Series of converters are not internally fused so to meet the requirements of UL 60950 an anti-surge input line fuse should always be used with ratings as defi ned below.
MEA1D05xxxC: 1A
MEA1D12xxxC: 0.375A
MEA1D15xxxC: 0.375A
MEA1D24xxxC: 0.2A
MEA1D48xxSC: 0.1A
All fuses should be UL approved and rated to at least the maximum allowable DC input voltage.
SAFETY APPROVAL
www.murata-ps.com
0.5
1.5
1.0
0
-40
Safe Operating Area
Ambient Temperature (°C)
0
50
85°C
100
150
TOLERANCE ENVELOPE
The voltage tolerance envelope shows typical load regulation characteristics for this
product series. The tolerance envelope is the maximum output voltage variation due
to changes in output loading.
1kVDC Isolated 1W Dual Output DC/DC Converters
Technical enquiries email: [e-mail], tel: [phone]
V
5%
NOM
10
25
Output Load Current (%)
50
2010-07-08 KDC_MEA1.C03 Page 3 of 8
MEA1 Series
75
100
0%
-4%
2%