If you’re designing with EMC in mind, please note that all of DATEL’s

A-Series UWR 6-10 Watt DC/DC Converters have been characterized for

radiated and conducted emissions in our new EMI/EMC laboratory. Testing

is conducted in an EMCO 5305 GTEM test cell utilizing EMCO automated

EMC test software. Radiated emissions are tested to the limits of FCC Part

15, Class B and CISPR 22 (EN 55022), Class B. Radiated emissions plots to

FCC and CISPR 22 for model UWR-12/665-D5A appear below.

80

70

60

50

40

30

20

10

0

–10

–20

Frequency (MHz)

100

1000

Radiated Emissions

FCC Class B Limit

UWR-12/665-D5A Radiated Emissions

FCC Part 15 Class B, 3 Meters

Converter Output = 12Vdc @ 620mA

UWR-12/665-D5A Radiated Emissions

EN 55022 Class B, 10 Meters

Converter Output = 12Vdc @ 620mA

80

70

60

50

40

30

20

10

0

–10

–20

Frequency (MHz)

100

1000

Radiated Emissions

EN 55022 Class B Limit

Input Fusing

Certain applications and/or safety agencies may require the installation of

fuses at the inputs of power conversion components. For DATEL A-Series

UWR 6-10 Watt DC/DC Converters, you should use slow-blow type fuses

with values no greater than the following:

Fuse Value

D5A

3A

D12A and D24E

2A

D48A and D48E

1A

DATEL’s world-class design, development and manufacturing team stands

ready to work with you to deliver the exact power converter you need for

your demanding, large volume, OEM applications. And ... we’ll do it on

time and within budget!

Our experienced applications and design staffs; quick-turn prototype

capability; highly automated, SMT assembly facilities; and in-line SPC

quality-control techniques combine to give us the unique ability to design

and deliver any quantity of power converters to the highest standards of

quality and reliability.

We have compiled a large library of DC/DC designs that are currently used

in a variety of telecom, medical, computer, railway, aerospace and indus-

trial applications. We may already have the converter you need.

Contact us. Our goal is to provide you the highest-quality, most cost-

effective power converters available.

CUSTOM C A P ABILITIES

EMI RADIA TED EMISSIONS

Quality and Reliability

The A-Series are the first DC/DC Converters to emerge from DATEL’s new,

company-wide approach to designing and manufacturing the most reliable

power converters available. The five-pronged program draws our Quality

Assurance function into all aspects of new-product design, development,

characterization, qualification and manufacturing.

Design for Reliability

Design for Reliability is woven throughout our multi-phased, new-product-

development process. Design-for-reliability practices are fully documented

and begin early in the new-product development cycle with the following

goals:

1. To work from an approved components/vendors list ensuring the use of

reliable components and the rigorous qualification of new components.

2. To design with safety margins by adhering to a strict set of derating

guidelines and performing theoretical worst-case analyses.

3. To locate potential design weaknesses early in the product-development

cycle by using extensive HALT (Highly Accelerated Life Testing).

4. To prove that early design improvements are effective by employing a

thorough FRACA (Failure Reporting Analysis and Corrective Action) System.

Soldering Guidelines

Murata Power Solutions recommends the specifications below when installing these

converters. These specifications vary depending on the solder type. Exceeding these

specifications may cause damage to the product. Be cautious when there is high atmo-

spheric humidity. We strongly recommend a mild pre-bake (100° C. for 30 minutes). Your

production environment may differ; therefore please thoroughly review these guidelines

with your process engineers.

Wave Solder Operations for through-hole mounted prod-

ucts (THMT)

For Sn/Ag/Cu based solders:

Maximum Preheat Temperature

115° C.

Maximum Pot Temperature

270° C.

Maximum Solder Dwell Time

7 seconds

For Sn/Pb based solders:

Maximum Preheat Temperature

105° C.

Maximum Pot Temperature

250° C.

Maximum Solder Dwell Time

6 seconds

UWR Series

Single Output, High Reliability, 2" x 1", 6-10 Watt, DC-DC Converters

MDC_UWR6-10W Series.D02 Page 5 of 6

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