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MEJ1S0303SC

P1-P3P4-P6P7-P9
MEJ1 Series
5.2kVDC Isolated 1W DC/DC Converters
KDC_MEJ1_D03 Page 1 of 9
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For full details go to
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SELECTION GUIDE
Order Code
Nominal Input
Voltage
Output Voltage
Output Current
Input Current
(Typ)
Load Regulation
(Typ)
Load Regulation
(Max)
Ripple & Noise
(Typ)
3
Ripple & Noise
(Max)
3
Efficiency
(Min)
Efficiency
(Typ)
MTTF
1
V V mA % mVp-p % kHrs
Single
MEJ1S0303SC 3.3 3.3 303 410 8.5 11 42 55 67 70 3653
MEJ1S0305SC 3.3 5 200 400 9 10 33 45 68 71.5 3810
MEJ1S0503SC 5 3.3 303 280 6.5 8 20 40 66 69 4117
MEJ1S0505SC 5 5 200 270 5.5 7 24 40 68 72 4082
MEJ1S0509SC 5 9 111 265 4.5 5 20 40 70 74 3939
MEJ1S0512SC 5 12 83 260 4.5 7 22 40 71 74 3816
MEJ1S0515SC 5 15 66 260 5 6 22 40 72 75 3412
MEJ1S1203SC 12 3.3 303 110 6 7 25 45 69 72 3461
MEJ1S1205SC 12 5 200 110 5 6 21 40 71 74.5 3319
MEJ1S1209SC 12 9 111 105 4 5 18 40 73 76.5 3218
MEJ1S1212SC 12 12 83 105 3.5 5 19 40 73 76.5 3494
MEJ1S1215SC 12 15 66 105 4 5 16 40 73 77 3150
MEJ1S1505SC 15 5 200 90 5 6 23 45 70 74 3048
MEJ1S1509SC 15 9 111 85 4 5 18 40 72 76 2963
MEJ1S1512SC 15 12 83 85 4 5 20 40 72 76.5 2733
MEJ1S1515SC 15 15 66 85 4 5 19 35 73 76.5 2333
MEJ1S2405SC 24 5 200 55 5 6 23 40 71 75 3353
MEJ1S2409SC 24 9 111 55 4 7 17 40 72 77 2940
MEJ1S2412SC 24 12 83 55 4 5 19 40 72 78 2987
MEJ1S2415SC 24 15 66 55 3.5 5 17 40 74 78 2517
Dual
MEJ1D0503SC 5 ±3.3 ±151 280 6 8 19 40 67 70 4511
MEJ1D0505SC 5 ±5 ±100 275 5 6 23 35 69 72 4012
MEJ1D0509SC 5 ±9 ±55 265 4 6 16 35 69 74 3492
MEJ1D0512SC 5 ±12 ±42 260 4 5 15 30 72 74.5 3485
MEJ1D0515SC 5 ±15 ±33 260 4 5 13 35 71 75.5 2844
MEJ1D1203SC 12 ±3.3 ±151 110 5.5 6 19 40 70 73 3461
MEJ1D1205SC 12 ±5 ±100 110 4.5 5 18 40 72 75.5 3317
MEJ1D1209SC 12 ±9 ±55 110 4 5 15 35 73 77 2908
MEJ1D1212SC 12 ±12 ±42 110 3.5 5 14 30 74 76.5 2911
MEJ1D1215SC 12 ±15 ±33 110 4 5 11 35 73 77 2713
MEJ1D1505SC 15 ±5 ±100 90 4.5 5 19 40 72 75 3274
MEJ1D1509SC 15 ±9 ±55 85 4 5 14 35 73 76.5 3229
MEJ1D1512SC 15 ±12 ±42 85 3.5 5 13 35 73 77 2872
MEJ1D1515SC 15 ±15 ±33 85 3.5 5 20 35 73 76.5 2440
MEJ1D2405SC 24 ±5 ±100 55 4.5 5 19 40 72 76.5 3316
MEJ1D2409SC 24 ±9 ±55 55 3.5 5 17 35 73 78 3208
MEJ1D2412SC 24 ±12 ±42 55 3.5 5 12 35 74 78 3362
MEJ1D2415SC 24 ±15 ±33 55 3.5 5 14 35 74 78.5 2697
INPUT CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Voltage range
Continuous operation, 3V input types 2.97 3.3 3.63
V
Continuous operation, 5V input types 4.5 5 5.5
Continuous operation, 12V input types 10.8 12 13.2
Continuous operation, 15V input types 13.5 15 16.5
Continuous operation, 24V input types 21.6 24 26.4
Input reflected ripple
3.3V input types 40
mA
5V input types 24
12V & 15V input types 12
24V input types 8
1. Calculated using MIL-HDBK-217 FN2 calculation model with nominal input voltage at full load.
2. See safety approvals section for limitations of use.
3. See ripple & noise test method.
All specifications typical at T
A=25°C, nominal input voltage and rated output current unless otherwise specified.
FEATURES
Basic/supplementary isolation to
UL 60950
2
 ANSI/AAMI ES60601-1
Single and dual outputs
UL 94V-0 package material
SIP package style
5.2kVDC isolation ‘Hi Pot Test’
3.3V, 5V, 12V, 15V & 24V inputs
3.3V, 5V, 9V, 12V & 15V output
Internal SMD construction
Fully encapsulated with toroidal magnetics
Pin compatible with the MEV, NMV, NMK,
MEJ2, & NMJ series
PRODUCT OVERVIEW
The MEJ1 series are single and dual output DC/
DC converters in a 7 pin SIP package style offering
an isolation and insulation upgrade path from
the NMV & MEV1 series’. The MEJ1 series has
UL60950 and ANSI/AAMI ES60601-1 recognition,
which makes it ideal for applications where safety
and miniaturisation are of paramount importance.
MEJ1 Series
5.2kVDC Isolated 1W DC/DC Converters
KDC_MEJ1_D03 Page 2 of 9
www.murata-ps.com/support
OUTPUT CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Rated Power
2
TA=-40ºC to 85ºC
1W
Voltage Set Point Accuracy See tolerance envelopes
Line regulation High V
IN to low VIN 1.1 1.2 %/%
ABSOLUTE MAXIMUM RATINGS
Short-circuit protection 48 Hours
Lead temperature 1mm from case for 10 seconds 260°C
Input voltage V
IN, MEJ1x03xxSC 5V
Input voltage V
IN, MEJ1x05xxSC 7V
Input voltage V
IN, MEJ1x12xxSC 15V
Input voltage V
IN, MEJ1x15xxSC 18V
Input voltage VIN, MEJ1x24xxSC 28V
ISOLATION CHARACTERISTICS
Parameter
Conditions
Min. Typ. Max. Units
Isolation test voltage
Production tested for 1 second
5200
VDC
Qualifcation tested for 1 second 7000
Qualifcation tested for 1 minute 5200
Resistance Viso= 500VDC 1GΩ
Isolation capacitance 3pF
GENERAL CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Switching frequency All types 50 kHz
TEMPERATURE CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Specification All output types (see safety approval section for limitations) -40 85
°C
Storage -55 125
Case Temperature above ambient
MEJ1S1212SC, MEJ1S1512SC, MEJ1S2412SC, MEJ1D1215SC, MEJ1D1512SC,
MEJ1D2412SC, MEJ1D2415SC, MEJ1S1215SC, MEJ1S1509SC, MEJ1S2409SC
13
MEJ1D1205SC, MEJ1D1209SC, MEJ1D2405SC, MEJ1D2409SC, MEJ1S1209SC,
MEJ1S1515SC, MEJ1S2415SC, MEJ1D1212SC, MEJ1D1509SC, MEJ1S0515SC,
MEJ1S2405SC, MEJ1D0512SC, MEJ1D0515SC, MEJ1D1515SC, MEJ1S1505SC ,
MEJ1D0505SC, MEJ1D0509SC, MEJ1D1203SC, MEJ1D1505SC, MEJ1S0509SC,
MEJ1S0512SC, MEJ1S1205SC
17
MEJ1S0505SC, MEJ1S1203SC, MEJ1D0503SC, MEJ1S0303SC, MEJ1S0305SC,
MEJ1S0503SC
21
Cooling Free air convection
TEMPERATURE DERATING GRAPH
85
400
-40
0.2
0.5
1.0
Ambient Temperature (ºC)
Output Power (W)
Safe
Operating Area
MEJ1 Series
5.2kVDC Isolated 1W DC/DC Converters
KDC_MEJ1_D03 Page 3 of 9
www.murata-ps.com/support
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 specified time, across a component designed to provide electrical isolation, to verify the integrity of that isolation.
Murata Power Solutions MEJ1 series of DC/DC converters are all 100% production tested at 5.2kVDC for 1 second and qualifcation tested at 7kVDC for 1 second,
5.2kVDC for 1minute.
A question commonly asked is, “What is the continuous voltage that can be applied across the part in normal operation?”
The MEJ1 series has been recognized by Underwiters Laboratory for various voltages, please see safety approval section below.
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. We therefore strongly advise against repeated high voltage isolation testing, but if it is absolutely required, that the voltage be
reduced by 20% from specified test voltage.
SAFETY APPROVAL
ANSI/AAMI ES60601-1
The MEJ1 series has been tested by Underwriters Laboratory (UL) to meet ANSI/AAMI ES60601-1 medical safety standard providing the following MOOP (means of operator
protection), in a maximum ambient temperature of 85°C and/or case temperature limit of 155°C (case temperature measured on the face opposite the pins): 1 MOOP based upon
a working voltage of 200 Vrms max and 280 Vpk max., between Primary and Secondary and between Primary and its Enclosure. File Number E202895 applies.
UL 60950
The MEJ1 series has been recognized by Underwriters Laboratory (UL) to UL 60950 for basic/supplementary insulation to a working voltage of 300Vrms 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 E151252 applies.
FUSING
The MEJ1 Series of converters are not internally fused so to meet the requirements of UL an anti-surge input line fuse should always be used with ratings as defined below.
MEJ1x03xxSC 1A
MEJ1x05xxSC 1A
MEJ1x12xxSC 500mA
MEJ1x15xxSC 500mA
MEJ1x24xxSC 250mA
All fuses should be UL recognized and rated to at least the maximum allowable DC input voltage.
RoHS COMPLIANCE INFORMATION
This series is compatible with RoHS soldering systems with a peak wave solder temperature of 260ºC for 10 seconds. The pin termination finish
on this product series is Tin Plate, Hot Dipped over Matte Tin with Nickel Preplate. The series is backward compatible with Sn/Pb soldering
systems. For further information, please visit www.murata-ps.com/rohs
P1-P3P4-P6P7-P9

MEJ1S0303SC

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Isolated DC/DC Converters 1W Single 3.3Vin 3.3Vout 303mA 5.2KV
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