KSR1105
Switching Application (Bias Resistor Built In)
• Switching circuit, Inverter, Interface circuit, Driver Circuit
• Built in bias Resistor (R
• Complement to KSR2105
=4.7KΩ, R2=10KΩ)
1
3
2
SOT-23
1
1. Base 2. Emitter 3. Collector
KSR1105
Equivalent Circuit
R1
B
R2
C
E
NPN Epitaxial Silicon Transistor
Absolute Maximum Ratings
Ta=25°C unless otherwise noted
Marking
R05
Symbol Parameter Value Units
V
CBO
V
CEO
V
EBO
I
C
P
C
T
J
T
STG
Electrical Characteristics
Collector-Base Voltage 50 V
Collector-Emitter Voltage 50 V
Emitter-Base Voltage 10 V
Collector Current 100 mA
Collector Power Dissipation 200 mW
Junction Temperature 150 °C
Storage Temperature -55 ~ 150 °C
Ta=25°C unless otherwise noted
Symbol Parameter Tes t Condition Min. Typ. Max. Units
BV
CBO
BV
CEO
I
CBO
h
FE
(sat) Collector-Emitter Saturation Voltage IC=10mA, IB=0.5mA 0.3 V
V
CE
C
ob
Collector-Base Breakdown Voltage IC=10µA, IE=0 50 V
Collector-Emitter Breakdown Voltage IC=100µA, IB=0 50 V
Collector Cut-off Current VCB=40V, IE=0 0.1 µA
DC Current Gain VCE=5V, IC=5mA 30
Output Capacitance VCB=10V, IE=0
3.7 pF
f=1.0MHz
f
T
(off) Input Off Voltage VCE=5V, IC=100µA0.3 V
V
I
(on) Input On Voltage VCE=0.3V, IC=20mA 2.5 V
V
I
R
1
R
1/R2
Current Gain-Bandwidth Product VCE=10V, IC=5mA 250 MHz
Input Resistor 3.2 4.7 6. 2 KΩ
Resistor Ratio 0.42 0.47 0.52
©2002 Fairchild Semiconductor Corporation Rev. A2, October 2002
Typical Characteristics
KSR1105
1000
100
10
, DC CURRENT GAIN
FE
h
1
0.1 1 10 100
IC[mA], COLLECTOR CURRENT
Figure 1. DC current Gain Figure 2. Input On Voltage
10k
1k
100
VCE = 5V
R1 = 4.7K
R2 = 10K
VCE = 5V
R1 = 4.7K
R2 = 10K
100
10
1
(on)[V], INPUT VOLTAGE
I
V
0.1
0.1 1 10 100
VCE =0.3V
R1 = 4.7K
R2 = 10K
IC[mA], COLLECTOR CURRENT
280
240
200
160
120
10
A], COLLECTOR CURRENT
µ
[
C
I
1
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
VI(OFF)[V], INPUT OFF VOLTAG E
Figure 3. Input Off Voltage Figure 4. Power Derating
80
[mW], POWER DISSIPATION
C
40
P
0
0 255075100125150175
Ta[oC], AMBIENT TEMPERATURE
©2002 Fairchild Semiconductor Corporation
Rev. A2, October 2002