Powering Communications and Technology
SMS SERIES
12 WATT
DESCRIPTION
SMS surface-mountable DC/DC converters feature up to
12 Watts of output power. The SMS is a fully isolated
converter with 1500 VDC isolation, short circuit, and
undervoltage lockout protection. The SMS is available with
remote shutdown, as well as an optional active current
share, to allow for high power distributed operation.
Available in 24 or 48 VDC input versions, the SMS is well
suited to telecom and networking applications.
Efficiency vs. Load (24V Input)
FEATURES
• Industry Standard
Package
• Industry Standard Pinout
• 85°C Case Operation
• Short Circuit Protection
• 6-Sided Shielding
• 24V and 48V Input
Versions
• Input Pi Filter
• Regulated Outputs
• 1500V Isolation
90
85
EFFICIENCY %
80
75
SMS012YE
70
SMS012YG
TECHNICAL SPECIFICATIONS
Input
Voltage Range
24 VDC Nominal
48 VDC Nominal
Reflected Ripple
Input Reverse Voltage Protection
18 - 36 VDC
36 - 72 VDC
25 mA
Shunt Diode
65
10
20
30
40
50
60
70
80
90
100
LOAD %
Efficiency vs. Load (48V Input)
90
85
80
Setpoint Accuracy
Line Regulation Vin Min. - Vin Max., Iout Rated
Load Regulation Iout Min. - Iout Max., Vin Nom
Minimum Output Current
Dynamic Regulation, Loadstep
Pk Deviation
Settling Time
Short Circuit / Overcurrent Protection
Current Limit Threshold Range, % of Iout Rated
±1%
±0.1% Vout
±0.2% Vout
10 % Iout Rated
25% Iout
4% Vout
500 ms
Shutdown / Hiccup
110 - 130%
EFFICIENCY %
Output
75
70
65
60
55
50
45
10
20
30
40
50
60
70
80
90
100
LOAD %
SMS012ZE
SMS012ZG
High Density - Board Mounted Power Division
General
Turn-On Time
Remote Shutdown
Switching Frequency
Isolation
Input - Output
Temperature Coefficient
Operating Temperature
Ambient Operating Range 100 LFM
Ambient Operating Range Convection
Storage Range
Humidity Max., Non-Condensing
Vibration, 3 Axes, 5 Min Each
MTBF† (Bellcore TR-NWT-000332)
Safety
Weight (approx.)
10 ms
Positive Logic
400 kHz
1500 VDC
±0.03%/°C
-40 To +85°C
-40 To +70°C
-40 To +100°C
95%
5 g, 10 - 55 Hz
Consult Factory
Consult Factory
0.4 oz
Notes
† MTBF predictions may vary slightly from model to model.
Specifications typically at 25°C, normal line, and full load, unless
otherwise stated.
Soldering Conditions: I/O pins, 260°C, ten seconds; fully compat-
ible with commercial wave-soldering equipment.
Safety: Agency approvals may vary from model to model.
Please consult factory for specific model information.Units are
water-washable and fully compatible with commercial spray or
immersion post wave-solder washing equipment.
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