Rev G

DCHBW150 SERIES

Up to 182 Watts

Half-Brick DC/DC Converter

Single Outputs

1/9/2018

Wall Industries, Inc. • 37 Industrial Drive, Exeter, NH 03833 • Tel: 603-778-2300 • Toll Free: 888-597-9255 •

Fax 603-778-9797

website: www.wallindustries.com • e-mail: sales@wallindustries.com

Page 10 of 13

RECOMMENDED PAD LAYOUT

Notes:

1. All dimensions in inch [mm]

2. Pad Size (Lead free recommended)

3. Through Hole 1,2,3,4,6,7,8,10: Φ0.051 [1.30]

4. Through Hole 5, 9: Φ0.091 [2.30]

5. Through Hole of Mounting: Φ0.126 [3.20]

6. Top View Pad 1,2,3,4,6,7,8,10: Φ0.064 [1.63]

7. Top View Pad 5, 9: Φ0.113 [2.88]

8. Top View Pad of Mountin

g: Φ0.157 [4.00]

9. Bottom View Pad 1,2,3,4,6,7,8,10: Φ0.102 [2.60]

10. Bottom View Pad 5,9

: Φ0.181 [4.60]

11. Bottom View Pad of Mounting: Φ0.252 [6.40]

THERMAL CONSIDERATIONS

The power module operates in a variety of thermal environments.

However, sufficient cooling should be provided to help ensure reliable operation of the unit.

Heat is removed by conduction, convection, and radiation to the surrounding environment.

Proper cooling can be verified by measuring the point as the figure below.

The temperature at this location should not exceed 115ºC.

When operating, adequate cooling must be provided to maintain the test point temperature at or below 115ºC.

Although maximum point temperature of the power modules is 115ºC, you can limit this temperature to a lower value for extremely high

reliability.

•Thermal test condition with vertical direction by natural convection (20LFM)

•The iron base-plate dimension is 19” x 3.5” x 0.063” (The height is EIA standard 2U)

•The heat-sink is optional and P/N: 7G-0021A-F, 7G-0022A-F, 7G-0023A-F, 7G-0024A-F