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2N4918 Folha de dados(PDF) 4 Page - ON Semiconductor

Nome de Peças 2N4918
Descrição Electrónicos  GENERAL.PURPOSE POWER TRANSISTORS
Download  8 Pages
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Fabricante Electrônico  ONSEMI [ON Semiconductor]
Página de início  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

2N4918 Folha de dados(HTML) 4 Page - ON Semiconductor

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2N4918 thru 2N4920
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4
Figure 4. Thermal Response
t, TIME (ms)
1.0
0.01
0.01
0.7
0.5
0.3
0.2
0.1
0.07
0.05
0.03
0.02
0.02 0.03 0.05
0.1
0.2 0.3
0.5
1.0
2.0 3.0
5.0
10
20 30
50
100
200 300
1000
500
θJC(t) = r(t) θJC
θJC = 4.16°C/W MAX
D CURVES APPLY FOR POWER
PULSE TRAIN SHOWN
READ TIME AT t1
TJ(pk) - TC = P(pk) θJC(t)
P(pk)
t1
t2
DUTY CYCLE, D = t1/t2
D = 0.5
0.2
0.05
0.01
SINGLE PULSE
0.1
10
1.0
Figure 5. Active–Region Safe Operating Area
VCE, COLLECTOR-EMITTER VOLTAGE (VOLTS)
5.0
2.0
1.0
0.5
0.1
2.0 3.0
5.0
10
20
30
50
100
70
0.2
TJ = 150°C
dc
5.0 ms
100 µs
7.0
PULSE CURVES APPLY BELOW
RATED VCEO
1.0 ms
SECOND BREAKDOWN LIMITED
BONDING WIRE LIMITED
THERMALLY LIMIT @ TC = 25°C
There are two limitations on the power handling ability of
a transistor: average junction temperature and second
breakdown. Safe operating area curves indicate IC – VCE
operation i.e., the transistor must not be subjected to greater
dissipation than the curves indicate.
The data of Figure 5 is based on TJ(pk) = 150_C; TC is
variable depending on conditions. Second breakdown pulse
limits are valid for duty cycles to 10% provided TJ(pk)
v 150_C. At high case temperatures, thermal limitations
will reduce the power that can be handled to values less than
the limitations imposed by second breakdown.
5.0
10
Figure 6. Storage Time
IC, COLLECTOR CURRENT (mA)
2.0
1.0
0.5
0.3
0.2
0.1
0.05
20 30
50 70
500 700 1000
ts′ = ts - 1/8 tf
0.07
100
3.0
0.7
200 300
TJ = 25°C
TJ = 150°C
IC/IB = 20
5.0
10
Figure 7. Fall Time
IC, COLLECTOR CURRENT (mA)
2.0
1.0
0.5
0.3
0.2
0.1
0.05
20 30
50 70
500 700 1000
0.07
100
3.0
0.7
200 300
TJ = 25°C
TJ = 150°C
IC/IB = 10
IC/IB = 20
IC/IB = 10
IB1 = IB2
VCC = 30 V
IB1 = IB2


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