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A/1-2007

Page 2 of 2

COMMON SPECIFICATIONS

Output Short Circuit Protection

Continuous ,Automatic Recovery

Temperature Rise at Full Load

15°C (TYP) 35°C(max)

Cooling

Free Air Convection

Operating Temperature Range

-40°C~+85°C

Storage Temperature Range

-50°C ~+125°C

Lead Temperature***

245°C Max. (10sec)

Storage Humidity Range

≤ 95%

MTBF

>1,000,000 hours

Note: 217

(

℃

70 sec)

TYPICAL CHARECTERISTICS

Operating Temp.( )

C

Temperature Derating Graph

FOOTPRINT DETAILS

123

9 101 112

242 32 2

1615141 3

22,23

2,3

14

16

Oth ers

Vin

GND

+Vo

0V

NC

(Top Vie w)

Pin

Function

OUTLINE DIMENSIONS

(Top View)

R1.5

[R0.06]

1.5

[0.06]

2.5

[0.10]

32.5

[1.28]

27.9

[1.10]

0.3

[0.01]

8.0

[0.31]

7.5

[0.30]

Note: Unit: mm(inch); Tolerance:

±0.25mm.

APPLICATION NOTE

Output Load

In order to ensure the product operate efficiently and reliably, in addition to a max load

(namely full load), a minimum load is specified for this kind of DC/DC converter. Make sure the

specified range of input voltage is not exceeded, the minimum output load no less than 10%

full load,

If the actual load is less than the specified minimum load, the output ripple may

increase sharply. If the actual output power is very small, please add an appropriate resistor as

extra loading,or contact our company for other lower output power products.

Recommended Circuit

All the WRB_T-3W Series have been tested

according to the following recommended testing

circuit before leaving factory. This series should

be tested under load(Figure 1).

DC

DC

Vin

GND

Vout

0V

Cin

If you want to further decrease the input/output

ripple, you can increase capacitance properly or

choose capacitors with low ESR. However, the

capacitance should not be too high(Table 1)

External Capacitor Table(Table 1)

Vin

Cin

Cout

(0~70 )

℃

Cout

(-40~85 )

℃

5V&12V

100uF

24V&48V

22uF

100uF

(electrolytic

capacitor)

47uF

(tantalum

capacitor)

Recommended Reflow Soldering Profil

e

Input Current

Nominal input voltage range.The input current

of the power supply must be sufficient to the

startup current (Ip) of the DC/DC module (Figure

2)

Input Voltage (V)

Input Voltage

Range

Ip

No parallel connection or plug and play.