
W Series Data Sheet
Failure Rates
Table 12: MTBF
?
125, 250 Watt AC-DC and DC-DC DIN-Rail Converters
Values at specified
case temperature
Module types
Ground benign
40 °C
Ground fixed
40 °C 70 °C
Ground mobile
50 °C
Unit
MTBF 1
LWR1601
LWN1601
LWN2660
892 000
644 000
522 000
180 000
131 000
101 000
197 000
72 000
55 000
68 000
51 000
38 000
h
1
Calculated in accordance with MIL-HDBK-217E, notice 2.
Mechanical Data
Dimensions in mm.
122.8 (4.84")
113.6 (4.47")
108 (4.25")
European
Projection
40 (1.6")
106.6 (4.2")
T C
29.4 (1.16")
103 (4.05")
09107c
Wall mounting
brackets
(accessories)
D-SUB Male
connector
Option M
(female connector)
Option M
(female connector)
31 (1.22")
LED
Measuring point for
case temperature T C
Fig. 16
Case W01
EWN/LWN: weight approx. 1400 g
EWR/LWR: weight approx. 1200 g
Case designed by ATP, Munich.
BCD20020-G Rev AC, 31-Jan-2013
Page 17 of 25
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