General Purpose Transistor
Rating and Characteristic Curves (MMBT3906)
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3V
+9.1 V
< 1 ns
3V
275
275
10 k
0
< 1 ns
+0.5 V
10 k
CS < 4 pF*
1N916
10 < t1 < 500
m
s
t1
CS < 4 pF*
10.6 V
300 ns
Duty Cycle = 2%
10.9 V
Duty Cycle = 2%
* Total shunt capacitance of test jig and connectors
Figure 1. Delay and Rise Time
Equivalent Test Circuit
Figure 2. Storage and Fall Time
Equivalent Test Circuit
TYPICAL TRANSIENT CHARACTERISTICS
TJ = 25°C
TJ = 125°C
10
7.0
Capacitance (pF)
5000
3000
2000
Cobo
Cibo
Q, Charge (pC)
VCC = 40 V
IC/IB = 10
5.0
3.0
2.0
1000
700
500
300
200
100
70
50
QT
QA
1.0
0.1
0.2 0.3
2.0 3.0 5.0 7.0 10
0.5 0.7
1.0
Reverse Bias (V)
20 30 40
1.0
2.0 3.0
5.0 7.0 10
20 30 50 70 100
I C, Collector Current (mA)
200
Figure 3. Capacitance
500
300
200
100
70
50
30
20
10
7
5
IC/IB = 10
Figure 4. Charge Data
500
300
200
IC/IB = 20
t f , Fall Time (ns)
VCC = 40 V
IB1 = IB2
100
70
50
30
20
10
7
5
IC/IB = 10
Time (ns)
tr @ VCC = 3.0 V
15 V
40 V
2.0 V
td @ VOB = 0 V
1.0
2.0 3.0
5.0 7.0 10
20
30
50
70 100
200
1.0
2.0 3.0
5.0 7.0 10
20
30
50
70 100
200
I C, Collector Current (mA)
I C, Collector Current (mA)
Figure 5. Turn – On Time
Figure 6. Fall Time
MDS0306002A
Page 3
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