A
3 Watt SMT Single Series DC/DC Converters
2401 Stanwell Drive Concord, California 94520 Ph: 925/687-4411 or 800/542-3355 Fax: 925/687-3333 www.calex.com Email: sales@calex.com
1
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Features
SMT Technology
2:1 Input Range
High Efficiency up to 83%
I/O Isolation 1500VDC
Short Circuit Protected
MTBF > 1,000,000 Hours
A
3 Watt SMT Single Series DC/DC Converters
2401 Stanwell Drive Concord, California 94520 Ph: 925/687-4411 or 800/542-3355 Fax: 925/687-3333 www.calex.com Email: sales@calex.com
2
eco# 020717-1, eco# 031119-5, eco# 040727-3, eco# 041007-1
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2401 Stanwell Drive Concord, California 94520 Ph: 925/687-4411 or 800/542-3355 Fax: 925/687-3333 www.calex.com Email: sales@calex.com
3
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1
NOTES
(1)
Specifications typical at Ta=+25C, resistive load, nominal input
voltage, full rated output current unless otherwise noted.
(2)
Transient recovery time is measured to within 1% error band for
a step change in output load 75% to 100%
(3)
When measuring output ripple & noise, an external 0.1F
ceramic capacitor is recommended to be placed from +Vout to
-Vout.
(4)
Specifications subject to change without notice.
(5)
Water Washability - Calex DC/DC converters are designed to
withstand most solder/wash processes. Careful attention should
be used when assessing the applicability in your specific
manufacturing process. Converters are not hermetically sealed.
A
3 Watt SMT Single Series DC/DC Converters
2401 Stanwell Drive Concord, California 94520 Ph: 925/687-4411 or 800/542-3355 Fax: 925/687-3333 www.calex.com Email: sales@calex.com
4
eco# 020717-1, eco# 031119-5, eco# 040727-3, eco# 041007-1
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2
1
,
1
1
,
0
1
,
3
2
2
,
4
1
C
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3
1
T
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+
5
1
T
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4
2
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3
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Denotes
Pin 1
0.15
All dimensions are typical in inches (mm).
Tolerance X.XX = +/- 0.01 (+/- 0.25)
0.10
(2.54)
0.70
(17.8)
1.27
(32.3)
0.02
(0.5)
0.02 (0.5)
0.40 (10.2)
0.085 (2.16)
0.58 (14.8)
0.63 (16.1)
0.74 (18.8)
Top
Side
Mechanical Configuration
Typical Application
Derating Curve
Connecting Pin Patterns
Solder Reflow Profile
Figure 1.
The profile in Figure 1 should be used as a starting point for your own
experiments. Obviously your optimal profile will be a function of many
factors including, type of paste, paste thickness, board thickness,
number of conductive layers, copper weight, the density of surrounding
components, etc. It is recommended that the peak temperature
should not exceed +235C for an extended period of time.
260
240
220
200
180
160
140
120
100
80
60
40
20
0
0
30
60
90
120
150
180
210
240
270
300
Time (Seconds)
T
emperature (C)
PRE-HEAT AND TEMPERATURE SOAK
SOLDER
REFLOW
PEAK
TEMP.
235C
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