1 5 - 2 0 W , D U A L O U T P U T D C / D C C O N V E R T E R S

A Series

1 5 - 2 0 W , D U A L O U T P U T D C / D C C O N V E R T E R S

A Series

DS-0323A

05/14/07

© 2007 C&D Technologies, Inc.

C&D Technologies, Inc. makes no representation that the use of its products in the circuits described herein, or the use of other technical

information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply the granting

of licenses to make, use, or sell equipment constructed in accordance therewith. Specifications are subject to change without notice.

C&D Technologies, Inc.

11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A.

Tel: (508) 339-3000 (800) 233-2765 Fax: (508) 339-6356

www.cd4power.com

email: sales@cdtechno.com

ISO 9001 REGISTERED

®

USA:

Tucson (Az), Tel: (800) 547 2537, email: sales@cdtechno.com

Canada: Toronto, Tel: (866) 740 1232, email: toronto@cdtechno.com

UK:

Milton Keynes, Tel: +44 (0)1908 615232, email: mk@cdtechno.com

France:

Montigny Le Bretonneux, Tel: +33 (0)1 34 60 01 01, email: france@cdtechno.com

Germany: München, Tel: +49 (0)89-544334-0, email: ped.munich@cdtechno.com

Japan:

Tokyo, Tel: 3-3779-1031, email: sales_tokyo@cdtechno.com

Osaka, Tel: 6-6354-2025, email: sales_osaka@cdtechno.com

Website: www.cd4power.jp

China:

Shanghai, Tel: +86 215 027 3678, email: shanghai@cdtechno.com

Guangzhou, Tel: +86 208 221 8066, email: guangzhou@cdtechno.com

6

C&D has invested in a Qualmark OVS-1 HALT tester capable of applying

voltage and temperature extremes as well as 6-axis, linear and rotational,

random vibration. A typical HALT profile (shown above) consists of thermal

cycling (–55 to +125°C, 30°C/minute) and simultaneous, gradually increas-

ing, random longitudinal and rotational vibration up to 20G’s with load cycling

and applied-voltage extremes added as desired. Many devices in C&D’s new

A-Series could not be made to fail prior to reaching either the limits of the

HALT chamber or some previously known physical limit of the device. We

also use the HALT chamber and its ability to rapidly cool devices to verify

their "cold-start" capabilities.

Qualification

For each new product, electrical performance is verified via a comprehensive

characterization process and long-term reliability is confirmed via a rigorous

qualification procedure. The qual procedure includes such strenuous tests as

thermal shock and 500 hour life. Qual testing is summarized below.

In-Line Process Controls and Screening

A combination of statistical sampling and 100% inspection techniques keeps

our assembly line under constant control. Parameters such as solder-paste

thickness, component placement, cleanliness, etc. are statistically sampled,

charted and fine tuned as necessary. Visual inspections are performed by

trained operators after pick-and-place, soldering and cleaning operations.

Units are 100% electrically tested prior to potting. All devices are temperature

cycled, burned-in, hi-pot tested and final-electrical tested prior to external

visual examination, packing and shipping.

Rapid Response to Problems

C&D employs an outstanding corrective-action system to immediately

address any detected shortcomings in either products or processes. When-

ever our assembly, quality or engineering personnel spot a product/process

problem, or if a product is returned with a potential defect, we immediately

perform a detailed failure analysis and, if necessary, undertake corrective

actions. Over time, this system has helped refine our assembly operation to

yield one of the lowest product defect rates in the industry.

Typical HALT Profile

Qualification Test

Method/Comments

HALT

C&D in-house procedure

High Temperature Storage

Max. rated temp., 1,000 hours

Thermal Shock

10 cycles, –55 to +125°C

Temperature/Humidity

+85°C, 85% humidity, 48 hours

Lead Integrity

C&D in-house procedure

Life Test

+70°C, 500 hours*

Marking Permanency

C&D in-house procedure

End Point Electrical Tests

Per product specification

Qualification Testing

* Interim electrical test at 200 hours.

10

20

30

40

50

60

70

80

90

40

20

0

Test Time (minutes)

100

80

60

40

20

0

–20

–40