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2N4921 데이터시트(PDF) 4 Page - ON Semiconductor

부품명 2N4921
상세설명  Medium?뭁ower Plastic NPN Silicon Transistors
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제조업체  ONSEMI [ON Semiconductor]
홈페이지  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

2N4921 데이터시트(HTML) 4 Page - ON Semiconductor

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2N4921, 2N4922, 2N4923
http://onsemi.com
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
qJC(t) = r(t) qJC
qJC = 4.16°C/W MAX
D CURVES APPLY FOR POWER
PULSE TRAIN SHOWN
READ TIME AT t1
TJ(pk) − TC = P(pk) qJC(t)
P(pk)
t1
t2
DUTY CYCLE, D = t1/t2
D = 0.5
0.2
0.05
0.01
0.1
SINGLE PULSE
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°Cdc
5.0 ms
7.0
PULSE CURVES APPLY BELOW
RATED VCEO
SECOND BREAKDOWN
LIMITED
BONDING WIRE LIMITED
THERMALLY LIMITED @ TC = 25°C
7.0
3.0
0.7
0.3
1.0 ms
100 ms
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
0.07
100
3.0
0.7
200 300
TJ = 25°C
TJ = 150°C
IC/IB = 10
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 = 20
IC/IB = 10
IC/IB = 20
IB1 = IB2
ts′ = ts − 1/8 tf
VCC = 30 V
IB1 = IB2


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