MJE800 查看數據表（PDF） - ON Semiconductor
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MJE800 Datasheet PDF : 6 Pages
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MJE700, MJE702, MJE703 (PNP) − MJE800, MJE802, MJE803 (NPN)
RB & RC VARIED TO OBTAIN DESIRED CURRENT LEVELS
D1, MUST BE FAST RECOVERY TYPE, e.g.:
1N5825 USED ABOVE IB ≈ 100 mA
MSD6100 USED BELOW IB ≈ 100 mA
VCC
−30 V
RC
TUT
V2
RB
APPROX
+8.0 V
0
51 D1
≈ 6.0 k ≈ 150
SCOPE
V1
APPROX
−12 V
tr, tf ≤ 10 ns
DUTY CYCLE = 1.0%
25 ms
+ 4.0 V
For td and tr, D1 id disconnected
and V2 = 0, RB and RC are varied
to obtain desired test currents.
For NPN test circuit, reverse diode,
polarities and input pulses.
Figure 2. Switching Times Test Circuit
4.0
VCC = 30 V IB1 = IB2
ts
IC/IB = 250 TJ = 25°C
2.0
tf
1.0
0.8
0.6
tr
0.4
0.2
0.04 0.06
PNP
NPN
0.1
0.2
td @ VBE(off) = 0
0.4 0.6 1.0 2.0
4.0
IC, COLLECTOR CURRENT (AMP)
Figure 3. Switching Times
1.0
0.7
D = 0.5
0.5
0.3
0.2
0.2
0.1
0.1
0.05
0.07 0.01
0.05
0.03 SINGLE PULSE
0.02
0.01
0.01 0.02 0.03 0.05
qJC(t) = r(t) qJC
qJC = 3.12°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
0.1 0.2 0.3 0.5 1.0 2.0 3.0 5.0 10 20 30 50
t, TIME (ms)
Figure 4. Thermal Response (MJE700, 800 Series)
100 200 300 500 1000
ACTIVE−REGION SAFE−OPERATING AREA
10
7.0
5.0
5.0 ms
1.0 ms
100 ms
10
7.0
5.0
5.0 ms
1.0 ms
3.0
2.0
dc
3.0
2.0
dc
100 ms
1.0
0.7
0.5
0.3
0.2
0.1
5.0
TJ = 150°C
BONDING WIRE LIMITED
THERMALLY LIMITED
@ TC = 25°C (SINGLE PULSE)
SECOND BREAKDOWN LIMITED
MJE702, 703
MJE700
7.0 10
20 30
50 70 100
VCE, COLLECTOR−EMITTER VOLTAGE (VOLTS)
Figure 5. MJE700 Series
1.0
0.7
0.5
0.3
0.2
0.1
5.0
TJ = 150°C
BONDING WIRE LIMITED
THERMALLY LIMITED
@ TC = 25°C (SINGLE PULSE)
SECOND BREAKDOWN LIMITED
MJE802, 803
MJE800
7.0 10
20 30
50 70 100
VCE, COLLECTOR−EMITTER VOLTAGE (VOLTS)
Figure 6. MJE800 Series
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
limits of the transistor that must be observed for reliable
operation; i.e., the transistor must not be subjected to greater
dissipation than the curves indicate.
The data of Figures 5 and 6 are 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)
< 150_C. TJ(pk) may be calculated from the data in Figure 4.
At high case temperatures, thermal limitations will reduce
the power that can be handled to values less than the
limitations imposed by second breakdown.
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