NJX1542
- 1 -
HIGH FREQUENCY VARACTOR DIODE
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GENERAL DESCRIPTION
NJX1542 is a GaAs varactor diode with very low toal
capacitance. It is suited for VCO or detector up to SHF band.
It features low total capacitance and high capacitance ratio.
That adopts the SMD ceramic package.
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FEATURE
l
High Total Capacitance Ratio
3.5 typ.
l
S~Ku Band Tuning/
Irregularity
l
Very Small SMD Package
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ABSOLUTE MAXIMUM RATINGS
(T
a
=25C)
PARAMETER
SYMBOL
RATINGS
UNITS
Reverse Voltage
V
R
40
V
Forward Current
I
F
10
mA
Operating Temperature
T
OP
-50~+125
C
Storage Temperature
T
STG
-50~+150
C
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ELECTRICAL CHARACTERISTIC
(T
a
=25C)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Forward Voltage
V
R
I
R
=10uA
40
-
-
V
Reverse Current
I
R
V
R
=20V
-
-
1.0
uA
Total Capacitance 0
C
t0
V
R
=0V, f=1MHz
0.60
0.75
-
pF
Total Capacitance 10
C
t10
V
R
=10V, f=1MHz
-
0.2
0.24
pF
Total Capacitance Ratio
C
t0
/C
t10
V
R
=0V, V
R
=10V ,f=1MHz
-
3.5
-
-
NJX1542
NJX1542
- 2 -
0.1
1
0.1
1
10
Total Capacitance vs. Reverse Voltage
Total Capacitance(pF)
Reverse Voltage(V)
f=1MHz
10
-12
10
-11
10
-10
10
-9
10
-8
0
5
10
15
20
25
30
Reverse Current vs. Reverse Voltage
Reverse Current(A)
Reverse Voltage(V)
0.0
0.2
0.4
0.6
0.8
1.0
10
-10
10
-8
10
-6
10
-4
10
-2
Forward Current vs Forward Voltage
Forward Voltage (V)
Forward Current (A)
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TYPICAL CHARACTERISTICS
NJX1542
- 3 -
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PACKAGE OUTLINE
0
.
5
0
.
1
1
.
7
8
0
.
2
1.30.5
0
.
1
2
5
+
0
.
1
-
0
.
0
5
1.780.2
1.20.5
0
.
5
0
.
1
1
.
4
0
.
2
-
ANODE
-
CATHODE
(Unit: mm)
Cautions on using this product
This product contains Gallium-Arsenide (GaAs) which is a harmful material.
Do NOT eat or put into mouth.
Do NOT dispose in fire or break up this product.
Do NOT chemically make gas or powder with this product.
To waste this product, please obey the relating law of your country.
This product may be damaged with electric static discharge (ESD) or spike voltage. Please handle with
care to avoid these damages.
[CAUTION]
The specifications on this databook are only
given for information , without any guarantee
as regards either mistakes or omissions. The
application circuits in this databook are
described only to show representative usages
of the product and not intended for the
guarantee or permission of any right including
the industrial rights.
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