MSC1066.PDF 3-10-99
2N2857
DESCRIPTION:
Silicon NPN transistor, designed for UHF equipment. Applications include low noise amplifier; oscillator, and mixer
applications.
ABSOLUTE MAXIMUM RATINGS
(Tcase = 25
°
C)
Symbol
Parameter
Value
Unit
V
CEO
Collector-Emitter Voltage
15
Vdc
V
CBO
Collector-Base Voltage
30
Vdc
V
EBO
Emitter-Base Voltage
2.5
Vdc
I
C
Collector Current
40
mA
Thermal Data
P
D
Total Device Dissipation @ T
A
= 25ºC
Derate above 25ºC
200
1.14
mWatts
mW/ ºC
1
2
3
4
1. Emitter
2. Base
3. Collector
4. Case
TO-72
Features
•
Silicon NPN, To-72 packaged UHF Transistor
•
1.6 GHz Current-Gain Bandwidth Product @ 5mA IC
•
Maximum Unilateral Gain = 13 dB (typ) @ 500 MHz
RF & MICROWAVE DISCRETE
LOW POWER TRANSISTORS
140 COMMERCE DRIVE
MONTGOMERYVILLE, PA
18936-1013
PHONE: (215) 631-9840
FAX: (215) 631-9855
MSC1066.PDF 3-10-99
2N2857
ELECTRICAL SPECIFICATIONS (Tcase = 25
°
C)
STATIC
(off)
Symbol
Test Conditions
Value
Min.
Typ.
Max.
Unit
BVCEO
Collector-Emitter Breakdown Voltage
(IC = 3.0 mAdc, IB = 0)
15
-
-
Vdc
BVCBO
Collector-Base Breakdown Voltage
(IC=1.0
µ
Adc, IE=0)
30
-
-
Vdc
BVEBO
Emitter-Base Breakdown Voltage
(IE = 10
µ
Adc, IC = 0)
2.5
-
-
Vdc
ICBO
Collector Cutoff Current
(VCE = 15 Vdc, IE = 0 Vdc)
-
-
.01
µ
A
(on)
HFE
DC Current Gain
(IC = 3.0 mAdc, VCE = 1.0 Vdc)
30
-
150
DYNAMIC
Symbol
Test Conditions
Value
Min.
Typ.
Max.
Unit
f
T
Current-Gain - Bandwidth Product
(IC = 5.0 mAdc, VCE = 6 Vdc, f = 100 MHz)
1.6
-
GHz
NF
Noise Figure (50 Ohms)
(IC = 1.5 mAdc, VCE = 6 Vdc, f = 500 MHz)
5.5
dB
MSC1066.PDF 3-10-99
2N2857
FUNCTIONAL
Symbol
Test Conditions
Value
Min.
Typ.
Max.
Unit
G
U max
Maximum Unilateral Gain
IC = 12 mAdc, VCE = 10Vdc,
f = 500 MHz
-
13
-
dB
MAG
Maximum Available Gain
IC = 12 mAdc, VCE = 10Vdc,
f = 500 MHz
-
13.5
-
dB
|S
21
|
2
Insertion Gain
IC = 12 mAdc, VCE = 10Vdc,
f = 500 MHz
9.5
10.5
-
dB
Table 1. Common Emitter S-Parameters, @ VCE = 10 V, IC = 12 mA
f
S11
S21
S12
S22
(MHz)
|S11|
∠ φ
|S21|
∠ φ
|S12|
∠ φ
|S22|
∠ φ
100
0.457
-44
12.49
122
0.012
63
0.823
-23
200
0.291
-56
8.06
101
0.018
55
0.712
-35
300
0.233
-60
5.3
89
0.024
81
0.728
-46
400
0.212
-68
3.88
80
0.032
55
0.723
-60
500
0.184
-76
3.36
80
0.037
49
0.711
-73
600
0.173
-79
2.97
69
0.043
46
0.717
-86
700
0.192
-89
2.39
61
0.044
44
0.72
-100
800
0.165
-96
1.89
57
0.055
43
0.731
-115
900
0.261
-121
2.72
60
0.068
29
0.746
-131
1000
0.083
149
1.27
39
0.064
18
0.749
-148
