MEJ1 Series
5.2kVDC Isolated 1W DC/DC Converters
KDC_MEJ1_D03 Page 1 of 9
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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.