BDX33B_07 Datasheet, PDF (3/6 Pages) ON Semiconductor – Darlington Complementary Silicon Power Transistors

BDX33B, BDX33C* (NPN) BDX34B, BDX34C* (PNP)
1.0
0.7 _{D = 0.5}
0.5
0.3
0.2
0.2
0.1
0.1
0.05
0.07
0.02
0.05
0.03
SINGLE PULSE
0.02
0.01
0.01
0.01 0.02 0.03 0.05 0.1
0.2 0.3
P_(pk)
t₁
t₂
SINGLE
PULSE
DUTY CYCLE, D = t₁/t₂
R_qJC(t) = r(t) R_qJC
R_qJC = 1.92°C/W
D CURVES APPLY FOR POWER
PULSE TRAIN SHOWN
READ TIME AT t₁
T_J(pk) - T_C = P_(pk) R_qJC(t)
0.5 1.0 2.0 3.0 5.0 10 20 30 50
t, TIME OR PULSE WIDTH (ms)
Figure 1. Thermal Response
100 200 300 500 1000
20
10
5.0
T_C = 25°C
2.0
5.0 ms
1.0 ms
dc
100
500 ms ^ms
20
10
5.0
T_C = 25°C
2.0
5.0 ms
1.0 ms
dc
100
500 ms ^ms
1.0
BONDING WIRE LIMITED
0.5
THERMALLY LIMITED @ T_C = 25°C
0.2
ą(SINGLE PULSE)
SECOND BREAKDOWN LIMITED
0.1 CURVES APPLY BELOW RATED V_CEO
1.0
BONDING WIRE LIMITED
0.5
THERMALLY LIMITED @ T_C = 25°C
ą(SINGLE PULSE)
0.2
SECOND BREAKDOWN LIMITED
0.1 CURVES APPLY BELOW RATED VCEO
0.05
0.02
1.0 2.0 3.0
5.0 7.0 10
BDX34B
BDX34C
20 30 50 70 100
0.05
0.02
1.0 2.0 3.0
5.0 7.0 10
BDX33B
BDX33C
20 30 50
V_CE, COLLECTOR-EMITTER VOLTAGE (VOLTS)
V_CE, COLLECTOR-EMITTER VOLTAGE (VOLTS)
Figure 2. Active-Region Safe Operating Area
70 100
There are two limitations on the power handling ability of a
transistor: average junction temperature and second
breakdown. Safe operating area curves indicate I_C - V_CE 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 Figure 3 is based on T_J(pk)
= 150°C; T_C is variable depending on conditions. Second
breakdown pulse limits are valid for duty cycles to 10%
provided T_J(pk) = 150°C. T_J(pk) may be calculated from the
data in Figureă4. At high case temperatures, thermal
limitations will reduce the power that can be handled to values
less than the limitations imposed by second breakdown.
10,000
5000
3000
2000
1000
500
T_J = 25°C
300
V_CE = 4.0 Vdc
200
I_C = 3.0 Adc
100
50
30
PNP
20
NPN
10
1.0
2.0 5.0 10 20 50 100 200 500 1000
f, FREQUENCY (kHz)
Figure 3. Small-Signal Current Gain
300
200
100
70
50
30
0.1 0.2
T_J = 25°C
C_ob
C_ib
PNP
NPN
0.5 1.0 2.0 5.0 10 20
V_R, REVERSE VOLTAGE (VOLTS)
Figure 4. Capacitance
50 100
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