1996
DATA SHEET
PACKAGE DRAWINGS
(Unit: mm)
SILICON TRANSISTOR
The
PA811T has built-in 2 low-voltage transistors which are designed to
amplify low noise in the VHF band to the UHF band.
FEATURES
Low Noise
NF = 1.9 dB TYP. @ f = 2 GHz, V
CE
= 1 V, I
C
= 3 mA
High Gain
|S
21e
|
2
= 6.5 dB TYP. @ f = 2 GHz, V
CE
= 1 V, I
C
= 3 mA
A Small Mini Mold Package Adopted
Built-in 2 Transistors (2
2SC4228)
ORDERING INFORMATION
PART NUMBER
QUANTITY
PACKING STYLE
PA811T
Loose products
Embossed tape 8 mm wide. Pin 6 (Q1
(50 PCS)
Base), Pin 5 (Q1 Emitter), Pin 4 (Q2 Emitter)
face to perforation side of the tape.
PA811T-T1
Taping products
(3 KPCS/Reel)
Remark
If you require an evaluation sample, please contact an NEC Sales
Representative. (Unit sample quantity is 50 pcs.)
ABSOLUTE MAXIMUM RATINGS (T
A
= 25
C)
PARAMETER
SYMBOL
RATING
UNIT
Collector to Base Voltage
V
CBO
20
V
Collector to Emitter Voltage
V
CEO
10
V
Emitter to Base Voltage
V
EBO
1.5
V
Collector Current
I
C
35
mA
Total Power Dissipation
P
T
150 in 1 element
mW
200 in 2 elements
Note
Junction Temperature
T
j
150
C
Storage Temperature
T
stg
65 to +150
C
Note
110 mW must not be exceeded in 1 element.
PA811T
HIGH-FREQUENCY LOW NOISE AMPLIFIER
NPN SILICON EPITAXIAL TRANSISTOR
(WITH BUILT-IN 2
2SC4228) SMALL MINI MOLD
Document No. P11464EJ1V0DS00 (1st edition)
Date Published June 1996 P
Printed in Japan
The information in this document is subject to change without notice.
PIN CONFIGURATION (Top View)
PIN CONNECTIONS
1. Collector (Q1)
2. Base (Q2)
3. Collector (Q2)
4. Emitter (Q2)
5. Emitter (Q1)
6. Base (Q1)
6
5
4
1
2
3
Q
1
Q
2
2.10.1
1.250.1
1
2
3
6
5
4
0.2
0
+0.1
0.65
0.65
1.3
2.00.2
0.90.1
0.7
0 to 0.1
0.15
0
+0.1
X
Y
PA811T
2
ELECTRICAL CHARACTERISTICS (T
A
= 25
C)
PARAMETER
SYMBOL
CONDITION
MIN.
TYP.
MAX.
UNIT
Collector Cutoff Current
I
CBO
V
CB
= 10 V, I
E
= 0
1.0
A
Emitter Cutoff Current
I
EBO
V
EB
= 1 V, I
C
= 0
1.0
A
DC Current Gain
h
FE
V
CE
= 3 V, I
C
= 5 mA
Note 1
80
200
Gain Bandwidth Product
f
T
V
CE
= 3 V, I
C
= 5 mA
5.5
8.0
GHz
Feed-back Capacitance
C
re
V
CB
= 3 V, I
E
= 0, f = 1 MHz
Note 2
0.7
pF
Insertion Power Gain
|S
21e
|
2
V
CE
= 3 V, I
C
= 5 mA, f = 2 GHz
5.5
7.5
dB
Noise Figure
NF
V
CE
= 3 V, I
C
= 5 mA, f = 2 GHz
1.9
3.2
dB
h
FE
Ratio
h
FE1
/h
FE2
V
CE
= 3 V, I
C
= 5 mA
0.85
A smaller value among h
FE
of h
FE1
= Q1, Q2
A Larger value among h
FE
of h
FE2
= Q1, Q2
Notes 1. Pulse Measurement: Pw
350
s, Duty cycle
2 %
2. Measured with 3-pin bridge, emitter and case should be connected to guard pin of bridge.
h
FE
CLASSIFICATION
Rank
FB
GB
Marking
44R
45R
h
FE
Value
80 to 160
125 to 250
TYPICAL CHARACTERISTICS (T
A
= 25
C)
100
0
5
0
10
0.5
50
100
150
200
5
1.0
10
15
20
0
0.5
1.0
10
20
1
5
10
50
20
50
100
200
V
CE
= 3 V
V
CE
= 3 V
120 A
100 A
80 A
I
B
= 20 A
Total Power Dissipation P
T
(mW)
Ambient Temperature T
A
(C)
Collector to Emitter Voltage V
CE
(V)
Collector Current I
C
(mA)
Collector Current I
C
(mA)
Base to Emitter Voltage V
BE
(V)
Collector Current I
C
(mA)
DC Current Gain h
FE
60 A
40 A
25
Free Air
I
C
- V
BE
Characteristics
h
FE
- I
C
Characteristics
P
T
- T
A
Characteristics
I
C
- V
CE
Characteristics
2 Elements in Total
Per Element
160 A
140 A
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