DATA SHEET
SM SERIES
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TO 2 WATTS
low noise
1000VDC I/O isolation
continuous short-circuit protection
regulated outputs
MTBF, MIL217F > 800,000 hours
operating temperature down to -40°C
EMI complies with EN55022 class A
single and dual outputs
not available as RoHS compliant
The SM series is fully line/load regulated in an SMD
package. Applications include telecom, datacom,
industrial controls, and all distributed power
systems.
MODELS
MODEL NUMBER
INPUT VOLTAGE
(VDC)
OUTPUT VOLTAGE
(VDC)
OUTPUT CURRENT REFLECTED RIPPLE
(mA)
CURRENT (mA)
NOTES
1) Transient recovery time is
measured to within 1% error
band for step change in output
load of 50% to 100%.
2) Ripple and noise measurement
bandwidth is 0-20mHz.
3) All dc/dc converters should be
externally fused at the front end
for protection.
4) Other input and output voltages
may be available, please consult
our factory.
5) Maximum capacitance load
5,12,15V out 470uf, ±12 and
±15V out 220uf.
6) Specifications subject to change
without notice.
SM5S5-400
SM5S12-165
SM5S15-133
SM5D12-83
SM5D15-66
SM12S5-400
SM12S12-165
SM12S15-133
SM12D12-83
SM12D15-66
SM24S5-400
SM24S12-165
SM24S15-133
SM24D12-83
SM24D15-66
SM48S5-400
SM48S12-165
SM48S15-133
SM48D12-83
SM48D15-66
5
5
5
5
5
12
12
12
12
12
24
24
24
24
24
48
48
48
48
48
5
12
15
±12
±15
5
12
15
±12
±15
5
12
15
±12
±15
5
12
15
±12
±15
400
165
133
±83
±66
400
165
133
±83
±66
400
165
133
±83
±66
400
165
133
±83
±66
80
80
80
80
80
20
20
20
20
20
20
20
20
20
25
15
15
15
15
15
3/19/2007
603 778 2300
www.wallindustries.com
1
DATA SHEET
SM SERIES
SPECIFICATIONS
All specifications apply at 25ºC unless otherwise noted.
TO 2 WATTS
SPECIFICATION
INPUT
Input Voltage Range
Input Filter
OUTPUT
Output Current
Voltage Accuracy
Line Regulation (HL-LL)
Load Regulation (20-100% load)
Short Circuit Protection
Ripple/Noise (20MHz BW)
Transient Response (50% load step)
GENERAL
VALUE
5,12,24, and 48VDC
Pi Filter
see model information table
±4% max.
±0.5% max.
±1% max.
continuous
30 mV p-p typ.
50uS
Efficiency
60% typ.
Isolation Voltage (input to output)
1000VDC
Isolation Resistance (input to output)
500VDC 1k mohm
Switching Frequency
60kHz typ.
ENVIRONMENTAL
Operating Temperature (ambient)
-40°C to +60°C
Storage Temperature
-40°C to +125°C
Humidity (non-condensing)
95%
Cooling
free air convection
PHYSICAL
Dimensions
1.07 x 0.58 x 0.4 inches
Weight
8.1 grams
Case Material
plastic UL94V-0
due to advances in technology, specifications subject to change without notice.
3/19/2007
603 778 2300
www.wallindustries.com
2
DATA SHEET
SM SERIES
TO 2 WATTS
3/19/2007
603 778 2300
www.wallindustries.com
3
DATA SHEET
SM SERIES
TO 2 WATTS
3/19/2007
603 778 2300
www.wallindustries.com
4
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