NEC's NPN SILICON RF
TWIN TRANSISTOR
FEATURES
•
•
•
•
•
LOW VOLTAGE, LOW CURRENT OPERATION
SMALL PACKAGE OUTLINE:
1.2 mm x 0.8 mm
LOW HEIGHT PROFILE:
Just 0.50 mm high
1
6
0.4
UPA895TD
OUTLINE DIMENSIONS
(Units in mm)
Package Outline TD
(TOP VIEW)
1.0±0.05
0.8
+0.07
-0.05
(Top View)
0.15±0.05
TWO LOW NOISE OSCILLATOR TRANSISTORS:
0.8
C1
1
Q1
6
B1
KP
NE851
IDEAL FOR 1-3 GHz OSCILLATORS
1.2
+0.07
-0.05
2
5
E1
0.4
2
Q2
5
E2
3
4
C2
3
4
B2
DESCRIPTION
NEC's UPA895TD contains two NE851 high frequency silicon
bipolar chips. The NE851 is an excellent oscillator chip, featur-
ing low 1/f noise and high immunity to pushing effects. NEC's
new ultra small TD package is ideal for all portable wireless
applications where reducing board space is a prime consider-
ation. Each transistor chip is independently mounted and
easily configured for oscillator/buffer amplifier and other
applications.
PIN CONNECTIONS
1. Collector (Q1)
2. Emitter (Q1)
3. Collector (Q2)
4. Base (Q2)
5. Emitter (Q2)
6. Base (Q1)
0.5±0.05
ORDERING INFORMATION
PART NUMBER
UPA895TD-T3-A
QUANTITY
10K Pcs./Reel
PACKAGING
Tape & Reel
ELECTRICAL CHARACTERISTICS
(T
A
= 25°C)
PART NUMBER
PACKAGE OUTLINE
SYMBOLS
I
CBO
I
EBO
h
FE
f
T
Cre
|S
21E
|
2
PARAMETERS AND CONDITIONS
Collector Cutoff Current at V
CB
= 10 V, I
E
= 0
Emitter Cutoff Current at V
EB
= 1 V, I
C
= 0
DC Current Gain
1
at V
CE
= 3 V, I
C
= 7 mA
Gain Bandwidth at V
CE
= 1 V, I
C
= 15 mA, f = 2 GHz
Feedback Capacitance
2
at V
CB
= 3 V, I
E
= 0, f = 1 MHz
Insertion Power Gain at V
CE
= 1 V, I
C
=5 mA, f = 2 GHz
GHz
pF
dB
dB
dB
3.0
4.5
UNITS
nA
nA
100
5.0
120
6.5
0.6
4.0
5.5
1.9
2.5
0.8
MIN
UPA895TD
TD
TYP
MAX
600
600
145
Q1 And Q2
|S
21
|S
21E
|
2E
|
2
Insertion Power GainIat V
CE
= 1 V, I
C
=15 mA, f = 2 GHz
NF
Noise Figure at V
CE
= 1 V, I
C
= 10 mA, f = 2 GHz
Notes: 1. Pulsed measurement, pulse width
≤
350
µs,
duty cycle
≤
2 %.
2. Collector to base capacitance when measured with capacitance meter (automatic balanced bridge method), with emitter connected to
guard pin of capacitances meter.
California Eastern Laboratories
0.125
+0.1
-0.05
CEL [ CALIFORNIA EASTERN LABS ]
