MBR0540T1 データシートの表示（PDF） - Motorola => Freescale
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MBR0540T1 Datasheet PDF : 4 Pages
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MBR0540T1
100
126
TJ = 25°C
124
122
Rtja = 118°C/W
120
10
0 5.0 10 15 20 25 30 35 40
VR, REVERSE VOLTAGE (VOLTS)
Figure 7. Capacitance
118
149°C/W
116
180°C/W
114
206°C/W
112
228°C/W
110
0 5.0 10 15 20 25 30 35 40
VR, DC REVERSE VOLTAGE (VOLTS)
Figure 8. Typical Operating Temperature Derating*
* Reverse power dissipation and the possibility of thermal runaway must be considered when operating this device under any re-
verse voltage conditions. Calculations of TJ therefore must include forward and reverse power effects. The allowable operating
TJ may be calculated from the equation: TJ = TJmax – r(t)(Pf + Pr) where
r(t) = thermal impedance under given conditions,
Pf = forward power dissipation, and
Pr = reverse power dissipation
This graph displays the derated allowable TJ due to reverse bias under DC conditions only and is calculated as TJ = TJmax – r(t)Pr,
where r(t) = Rthja. For other power applications further calculations must be performed.
1.00E+00
50%
20%
10%
1.00E–01 5.0%
2.0%
1.0%
1.00E–02
Rtjl(t) = Rtjl*r(t)
1.00E–03
0.00001
0.0001
1.00E+00
0.001
0.01
0.1
1.0
10
T, TIME (s)
Figure 9. Thermal Response Junction to Lead
100
1,000
50%
20%
1.00E–01
10%
5.0%
2.0%
1.00E–02
1.0%
Rtjl(t) = Rtjl*r(t)
1.00E–03
0.00001
0.0001
0.001
0.01
0.1
1.0
10
T, TIME (s)
Figure 10. Thermal Response Junction to Ambient
100
1,000
Rectifier Device Data
3
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