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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SMS SERIES
12 WATT
Powering Communications and Technology
MODELS -
(See the last page of Section for options.)
Selection Chart
Model
SMS007YC
SMS012YE
SMS012YG
SMS007ZC
SMS009ZD
SMS012ZE
SMS012ZG
Vin
(Volts)
24
24
24
48
48
48
48
Vin Range
(Volts)
18 - 36
18 - 36
18 - 36
36 - 72
36 - 72
36 - 72
36 - 72
Iin Max.*
(Amps)
0.52
0.82
0.82
0.26
0.32
0.41
0.41
Vout
(Volts)
2.1
3.3
5.0
2.1
2.5
3.3
5.0
Iout Rated
(Amps)
3.3
3.6
2.4
3.3
3.6
3.6
2.4
Ripple & Noise
Pk-Pk (mV)
50
50
50
50
50
50
50
Efficiency
Typ. **
84%
86%
88%
82%
85%
87%
88%
* Maximum input current at minimum input voltage, maximum rated output power.
** At nominal Vin, rated output.
MECHANICAL DRAWING
2.00"
(50.8mm)
0.875"(22.2mm)
8
7
6
5
1.00"
0.85"
0.98"
TOP VIEW
1
2
3
4
(25.4mm)
(21.6mm) (24.9mm)
LAND PATTERN
0
-0.06"(-1.5mm)
-0.40"
(-10.2mm)
0
0.400"
(10.2mm)
0.800"
1.200"
(30.5mm)
0.375"
(9.5mm)
0.025" TYP.
(0.6mm)
(20.3mm)
High Density - Board Mounted Power Division
Thermal Impedance
Natural Convection 21.1 °C/W
100 LFM
10.4 °C/W
200 LFM
6.8 °C/W
300 LFM
5.6 °C/W
400 LFM
4.3 °C/W
Pin
1
2
3
4
5
Function
- Vin
S/D
+ Vout
- Vout
- Vout
+ Vout
OPTION
+Vin
Pin:
± 0.002
Tolerances
Inches:
(Millimeters)
.XX ± 0.020
.XXX ± 0.010
.X ± 0.5
.XX ± 0.25
Note:
Thermal impedance data is
dependent on many environmental
factors. The exact thermal
performance should be validated
for specific application.
6
7
8
± 0.05
(Dimensions as listed unless
otherwise specified.)
2
OPTIONS
Powering Communications and Technology
When ordering equipment options, use the following suffix information. Select the option(s) that you prefer and
add them to the model number. Example ordering options are located below the options table.
OPTIONS
Negative Logic
SUFFIX
N
APPLICABLE SERIES
HAS, HBD, HBS, HES, HLS, LES,
QBS, QES, QLS, TES, TQD
HAS, HBD, HBS, HES, HLS, QBS, QES,
QLS
XWS, XWD, XWT
IAS, LES
IAD, IAS, LES, SMS
IAS, LES
SMS
Encapsulated EWS, IWS, OWS
Standard Pin Length is 0.180"
(4.6mm)
8
9
1H
1V
2H
2V
3H
3V
All Units (Except SMS)
All Units (Except SMS)
All Units (Except DIP, HLS, HLD, QLS,
SIP, SM TLD, and TKD Packages)
All Units (Except DIP, HLS, HLD, QLS,
SIP, SM TLD, and TKD Packages)
All Units (Except DIP, HLS, HLD, QLS,
SIP, SM TLD, and TKD Packages)
All Units (Except DIP, HLS, HLD, QLS,
SIP, SM TLD, and TKD Packages)
All Units (Except DIP, HLS, HLD, QLS,
SIP, SM TLD, and TKD Packages)
All Units (Except DIP, HLS, HLD, QLS,
SIP, SM TLD, and TKD Packages)
REMARKS
TTL "Low" Turns Module ON
TTL "High" Turns Module OFF
Lucent Compatible Trim
Terminal Strip
Trim
Enable
Trim and Enable
Current Share
Headerless
PIN LENGTH AND HEATSINK
OPTIONS
0.110" (2.8mm) Pin Length
0.150" (3.8mm) Pin Length
0.24" (6.1mm) Horizontal Heatsink
0.24" (6.1mm) Vertical Heatsink
0.45" (11.4mm) Horizontal Heatsink
0.45" (11.4mm) Vertical Heatsink
0.95" (24.1mm) Horizontal Heatsink
0.95" (24.1mm) Vertical Heatsink
T
TS
1
2
3
4
Y
Includes Thermal Pad
Includes Thermal Pad
Includes Thermal Pad
Includes Thermal Pad
Includes Thermal Pad
High Density - Board Mounted Power Division
Includes Thermal Pad
Example Options:
HBS050ZG-ANT3V = HBS050ZG-A with negative logic, Lucent compatible trim, and 0.95” vertical heatsink.
LES015YJ-3N = LES015YJ with optional trim and enable, negative logic.
QBS066ZG-AT8 = QBS066ZG-A with Lucent compatible trim and 0.110” pin length.
NUCLEAR AND MEDICAL APPLICATIONS - Power-One products are not authorized for use as critical components in life support systems, equipment used
in hazardous environments, or nuclear control systems without the express written consent of the President of Power-One, Inc.
TECHNICAL REVISIONS - The appearance of products, including safety agency certifications pictured on labels, may change depending on the date manu-
factured. Specifications are subject to change without notice.
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