Instruction Manual
BC857BLP
Document number: DS30526 Rev. 10 - 2
2 of 4
www.diodes.com
February 2011
© Diodes Incorporated
BC857BLP
Maximum Ratings @T
A
= 25°C unless otherwise specified
Characteristic Symbol Value Unit
Collector-Base Voltage
V
CBO
-50 V
Collector-Emitter Voltage
V
CEO
-45 V
Emitter-Base Voltage
V
EBO
-5.0 V
Collector Current
I
C
-100 mA
Thermal Characteristics
Characteristic Symbol Value Unit
Power Dissipation (Note 4) @T
A
= 25°C P
D
250 mW
Thermal Resistance, Junction to Ambient Air (Note 4) @T
A
= 25°C
R
θ
JA
500
°C/W
Operating and Storage Temperature Range
T
J
, T
STG
-55 to +150
°C
Electrical Characteristics @T
A
= 25°C unless otherwise specified
Characteristic (Note 5) Symbol Min Typ Max Unit Test Condition
Collector-Base Breakdown Voltage
BV
CBO
-50 — — V
I
C
= 10μA, I
B
= 0
Collector-Emitter Breakdown Voltage
BV
CEO
-45 — — V
I
C
= 10mA, I
B
= 0
Emitter-Base Breakdown Voltage
BV
EBO
-5 — — V
I
E
= 1μA, I
C
= 0
DC Current Gain
h
FE
220 260 475 —
V
CE
= -5.0V, I
C
= -2.0mA
Collector-Emitter Saturation Voltage
V
CE(sat)
—
-90
-250
-300
-650
mV
I
C
= -10mA, I
B
= -0.5mA
I
C
= -100mA, I
B
= -5.0mA
Base-Emitter Saturation Voltage
V
BE(sat)
—
—
-700
-850
—
—
mV
I
C
= -10mA, I
B
= -0.5mA
I
C
= -100mA, I
B
= -5.0mA
Base-Emitter Voltage
V
BE(on)
-600
—
-670
-710
-750
-820
mV
V
CE
= -5.0V, I
C
= -2.0mA
V
CE
= -5.0V, I
C
= -10mA
Collector-Cutoff Current
I
CBO
—
—
—
—
-15
-4.0
nA
µA
V
CB
= -30V
V
CB
= -30V, T
A
= 150°C
Gain Bandwidth Product
f
T
100 — — MHz
V
CE
= -5.0V, I
C
= -10mA,
f = 100MHz
Collector-Base Capacitance
C
CBO
— 3.0 — pF
V
CB
= -10V, f = 1.0MHz
Notes: 4. Device mounted on FR-4 PCB, Diodes Inc. suggested pad layout document can be found on our website at http://www.diodes.com.
5. Short duration pulse test used to minimize self-heating effect.
0
50
100
0 255075100125150
P
,
P
O
WE
R
DISSI
P
A
T
I
O
N (mW)
D
T , AMBIENT TEMPERATURE (°C)
Fig. 1 Power Dissipation
vs. Ambient Temperature (Note 4)
A
150
200
250
300
R = 500 C/W
θ
JA
°
h , DC CURRENT GAIN
FE
I , COLLECTOR CURRENT (mA)
Fig. 2
C
Typical DC Current Gain vs. Collector Current