OKLP-X/25-W12-C

25A Power Block Non-Isolated DC-DC Converter

OKLP-X/25-W12-C.A01.D22 Page 10 of 20

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Table 7.2. Reliability

Parameter

Notes

Min

Nom

Max

Units

Calculated MTBF

1

7.683

-

MHrs

Service Life

2-7-

Years

1. Calculated according to Bellcore or Telcordia TR-NTW-000332 at 40C full-load.

2. Calculated at 30 °C.

7.3. Parallel Operation

2 or more units will be operated in parallel. Current sharing function will be performed by the external PWM controller.

7.4. Use of Ceramic Capacitors

Unit does not use any SMT ceramic capacitors larger than 1210.

7.5. SMT Reflow Soldering Guidelines

The surface-mount reflow solder profile shown below is

suitable for SAC305 type lead-free solders. This graph should

be used only as a guideline. Many other factors influence

the success of SMT reflow soldering. Since your produc-

tion environment may differ, please thoroughly review these

guidelines with your process engineers.