MT3A- series
T E C H N I C A L S P E C I F I C A T I O N All specifications are typical at nominal input, full load and 25ºC otherwise noted
OUTPUT SPECIFICATIONS
INPUT SPECIFICATIONS
5V nominal input
4.5 – 6VDC
9 – 18VDC
18 – 36VDC
36 – 75VDC
Output power
3 Watts, max.
± 1%
12V nominal input
24V nominal input
48V nominal input
Input voltage range
Input filter
Voltage accuracy
Minimum load (Note 5)
Line regulation
Full load and nominal Vin
See table
Pi type
LL to HL at Full Load
Min Load to Full Load
± 0.2%
5V input
15VDC
36VDC
50VDC
100VDC
Single 3.3Vout ± 0.3%
Input surge voltage
100mS max
12V input
24V input
48V input
Load regulation
Others
± 0.2%
± 2%
Dual
Cross regulation (Dual) Asymmetrical load 25% / 100% FL
± 5%
Input reflected ripple current Nominal Vin and full load
Nominal Vin and
120mAp-p
Ripple and noise
20MHz bandwidth
See table
Start up time
Power up
30mS, typ.
constant resistive load
±0.02% / ºC, max.
500µS
Temperature coefficient
ENVIRONMENTAL SPECIFICATIONS
Operating ambient temperature
Storage temperature range
Maximum case temperature
Thermal shock
Transient response recovery time 25% load step change
-25ºC ~ +85ºC (with derating)
-40ºC ~ +125ºC
100ºC
Over load protection
% of FL at nominal input
180%, typ.
Short circuit protection
Continuous, automatics recovery
GENERAL SPECIFICATIONS
Efficiency
MIL-STD-810F
MIL-STD-810F
5% to 95% RH
See table
Vibration
Isolation voltage
Input
to Output
500VDC ,min
500VDC ,min
Relative humidity
Input (Output)to case
Isolation resistance
Isolation capacitance
Switching frequency
109ohms, min.
300pF, max.
EMC CHARACTERISTICS
EMI
EN55022
Class A
100KHz, min.
Design meet safety standard
Case material
IEC60950-1,UL60950-1,EN60950-1
Nickel-coated copper
Base material
Non-conductive black plastic
Epoxy (UL94-V0)
Potting material
BELLCORE TR-NWT-000332
MIL-HDBK-217F
3.706 x 106 hrs
MTBF (Note 1)
3.018 x 106 hrs
Note
1. BELLCORE TR-NWT-000332. Case 1: 50% Stress, Temperature at 40ºC.
MIL-HDBK-217F Notice2 @Ta=25 ºC, Full load(Ground, Benign, controlled environment).
2. Maximum value at nominal input voltage and full load.
3. Typical value at nominal input voltage and full load.
4. Test by minimum Vin and constant resistive load.
5. The output requires a minimum loading on the output to maintain specified regulation. Operation under no-load condition will not
damage these devices, however they may not meet all listed specification.