Datasheet
BC856A – BC858C
Document Number: DS11207 Rev. 24 - 2
4 of 7
www.diodes.com
October 2014
© Diodes Incorporated
BC856A-BC858C
Electrical Characteristics (@T
A
= +25°C, unless otherwise specified.)
Characteristic
Symbol
Min
Typ
Max
Unit
Test Condition
Collector-Base Breakdown Voltage
BC856
BV
CBO
-80
—
—
V
I
C
= -10µA
BC857
-50
BC858
-30
Collector-Emitter Breakdown Voltage
(Note 10)
BC856
BV
CEO
-65
—
—
V
I
C
= -10mA
BC857
-45
BC858
-30
Emitter-Base Breakdown Voltage
BV
EBO
-5
—
—
V
I
E
= -1µA
Collector Cutoff Current
I
CBO
—
—
-15
nA
V
CB
= -30V
-4
µA
V
CB
= -30V, T
J
= +150°C
Collector Emitter Cutoff Current
BC856
I
CES
—
—
-15
nA
V
CE
= -80V
BC857
-15
V
CE
= -50V
BC858
-15
V
CE
= -30V
Emitter-Base Cutoff Current
I
EBO
—
—
-100
nA
V
EB
= -5V
Small Signal Current Gain
(Note 10)
BC856A / BC857A / BC858A
h
fe
—
200
—
—
I
C
= -2.0mA, V
CE
= -5V
f = 1.0kHz
BC856B / BC857B / BC858B
330
BC857C / BC858C
600
Input Impedance (Note 10)
BC856A / BC857A / BC858A
h
ie
—
2.7
—
kΩ
BC856B / BC857B / BC858B
4.5
BC857C / BC858C
8.7
Output Admittance
(Note 10)
BC856A / BC857A / BC858A
h
oe
—
18
—
µS
BC856B / BC857B / BC858B
30
BC857C / BC858C
60
Reverse Voltage Transfer
Ratio (Note 10)
BC856A / BC857A / BC858A
h
re
—
1.5x10
-4
—
—
BC856B / BC857B / BC858B
2x10
-4
BC857C / BC858C
3x10
-4
DC Current Gain (Note 10)
BC856A / BC857A / BC858A
h
FE
125
180
250
—
I
C
= -2.0mA, V
CE
= -5V
BC856B / BC857B / BC858B
220
290
475
BC857C / BC858C
420
520
800
Collector-Emitter Saturation Voltage (Note 10)
V
CE(sat)
—
-75
-300
mV
I
C
= - 10mA, I
B
= -0.5mA
-250
-650
I
C
= - 100mA, I
B
= -5.0mA
Base-Emitter Turn-On Voltage (Note 10)
V
BE(on)
-600
-650
-750
mV
I
C
= -2mA, V
CE
= -5V
—
—
-820
I
C
= -10mA, V
CE
= -5V
Base-Emitter Saturation Voltage (Note 10)
V
BE(sat)
—
-700
—
mV
I
C
= -10mA, I
B
= -0.5mA
-850
-1100
I
C
= -100mA, I
B
= -5mA
Output Capacitance
C
obo
—
3
—
pF
V
CB
= -10V, f = 1.0MHz
Transition Frequency
f
T
100
200
—
MHz
V
CE
= -5V, I
C
= -10mA,
f = 100MHz
Noise Figure
NF
—
2
10
dB
V
CE
= -5V, I
C
= -200µA
R
S
= 2kΩ, f = 1kHz
∆f = 200Hz
Note: 10. Measured under pulsed conditions. Pulse width ≤ 300µs. Duty cycle ≤ 2%.