DFR Datasheet, PDF (2/5 Pages) Dubilier – Power Flame Proof Resistors

Resistors
Power Flame Proof Resistors
Derating Curve
Rated Load (%)
70?
100
80
60
40
20
20 40 60 80 100 120 140 155 180
Ambient Temperature (? )
Pulse Loading Capabilities
10⁴
Pmax
(W)
10³
tp/ti=1000
tp/ti=200
tp/ti=50
10²
tp/ti=10
10
tp/ti=2
1
4R7
100R
220R
4K7
10^-1
10^-5
10^-4
10^-3
10^-2
10^-1 ti (S)
1
DFR400 Series:
Pulse on a regular basis;maximum permissible peak pulse power (P-max) as a
function of pulse duration (t_i).
Packing Methods
STYLE
Normal
a
DFR050
DFR100
DFR200
DFR300
DFR400
6 ±0.5
6 ±0.5
6 ±0.5
6 ±0.5
6 ±0.5
DIMENSIONS
Unit: mm
A
B1-B2
S
(spacing)
T (max. deviationof
spacing)
52.4 ± 1.0
1.2
10
52.4 ± 1.0
1.2
10 _{1mmper 10spacing}
52.4 ± 1.0
1.2
10
0.5mm per 5 spacing
73 ± 1.5
1.5
10
73 ± 1.5
1.5
10
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