1MS4A Series
1W - Single Output - Micro Size Fixed Input - Isolated & Unregulated
DC-DC Converter
1 Watt
The 1MS4A Series are specially designed for applications where a single power
supply is isolated from the input power supply in a distributed power supply system
on a circuit board.
Efficiency up to 78%
Super miniature SIP Package
1KVDC Isolation
No Heat sink Required
No external component
required
Temperature Range:
-40°C to +85°C
UL94-V0 Package
Industry standard pinout
Internal SMD construction
RoHS Compliance
These products apply to:
1) Where the voltage of the input power supply is fixed
(voltage variation ≤ 10%);
2) Where isolation is necessary between input and output
(isolation voltage ≤1000VDC);
3) Where the regulation of the output voltage and the output ripple noise are
not demanding.
Such as: purely digital circuits, ordinary low frequency analog circuits, and IGBT
power device driving circuits, etc.
RoHS
Common specifications
Short circuit protection*:
Temperature rise at full load:
Cooling:
Output specifications
1 second
Item
Test condition
Min
0.1
Typ
Max
1
Units
W
25°C MAX, 15°C TYP
Free air convection
-40°C~+85°C
Output power
Line regulation
For Vin change of 1%
• 3.3V output
• others output
1.5
1.2
%
%
Operation temperature range:
Storage temperature range:
Storage humidity range:
Lead temperature range:
Case material:
-55°C ~+125°C
Load regulation
10% to 100% full load
• 3.3V output
• 5V output
• 9V output
• 12V output
12
20
15
10
10
10
%
%
%
%
%
< 95%
10.5
8.3
6.8
6.3
300°C MAX, 1.5mm from case for 10 sec
Plastic [UL94-V0]
>3,500,000 hours
1.05g
• 15V output
MTBF:
Output voltage
accuracy
See tolerance envelope graph
Weight:
Temperature drift
Output ripple*
100% full load
0.03 %/°C
* Supply voltage must be discontinued at the end of short circuit duration.
20MHz Bandwidth
75
100
mVp-p
KHz
Switching frequency Full load, nominal input
100
Isolation specifications
*Test ripple and noise by “parallel cable” method. See detailed operation
instructions at Testing of Power Converter section, application notes.
Item
Test condition
Min
Typ
Max
Units
VDC
Isolation voltage
Tested for 1 minute and 1000
1mA max
Model selection:
WCTP**_xxyyN##O
Isolation resistance
Isolation capacitor
Test at 500VDC
1000
MΩ
W=Watt; C= Case; T=Type; P=Pinning; **= Voltage Variation (omitted
10%); xx= Vin; yy= Vout; N= Numbers of Output; ##= Isolation
(kVDC); O= Output Regulation
60
pF
Note:
1. Operation under minimum load will not damage the converter; However, they
may not meet all specification listed, and that will reduce the life of product.
2. All specifications measured at TA=25°C, humidity < 75%, nominal input voltage
and rated output load unless otherwise specified.
Example:
1MS4A_0505S1U
1=1Watt; MS4=Micro SIP4; A=Pinpot; 05= 5Vin; 05= 5Vout;
S= Single Output; 1= 1000 VDC Isolation; U= Unregulated Output
Part Number
Input Voltage [V]
Output Voltage [VDC]
Current [mA]
Efficiency [%, max]
1MS4A_0305S1U
1MS4A_0305S1U
1MS4A_0505S1U
1MS4A_0512S1U
1MS4A_0515S1U
1MS4A_1205S1U
1MS4A_1212S1U
3.3
3.3
5
3.3
5
303
200
200
83
69
74
70
77
78
70
77
5
5
12
15
5
5
67
12
12
200
83
12
Page 1 of 3
GAPTEC-Electronic GmbH & Co. KG
1MS4A – Rev. 2012-1.2
sales@gaptec-electronic.com – www.gaptec-electronic.com
Specifications subject to change without notice.
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