30 VOLT ABRUPT JUNCTION VARACTOR DIODES
DESCRIPTION
The GC1500 series varactors are silicon abrupt junction
devices. They offer the highest Q and lowest series resis-
tance available in a 30 Volt silicon varactor.
APPLICATIONS
The GC1500 series varactors are used for narrow to
moderate band width tuning. They are available in val-
ues appropriate for VHF through KU band frequencies.
These devices are best used in low phase noise voltage
controlled oscillators, low loss voltage variable filters
and phase shifters.
Standard capacitance tolerance is 10% Other capaci-
tance values and custom mechanical configurations are
also available. All specifications shown are based on
style 30 package and include .18 pF case capacitance.
Consult package outline section of this catalog for other
case styles available. Complete electrical and mechani-
cal data is also provided.
RATINGS
Minimum Voltage Breakdown: 30 V at 10A
Maximum Leakage Current at:
25 V and 25C
0.02 A
25 V and 125C
2.00 A
Capacitance-Temp. Coefficient: 300 ppm/C at V
R
=-4V
Operating Temperature:
-55C to +150C
Storage Temperature:
-65C to +200C
Typical Junction Capacitance vs Reverse Bias
SEMICONDUCTOR OPERATION
75 Technology Drive Lowell, MA 01851 Tel: 978-442-5600 Fax: 978-937-3748
15
Tuning Varactors
TOC
30 VOLT ABRUPT JUNCTION VARACTOR DIODES
ELECTRICAL SPECIFICATIONS: T
A
= 25C
MODEL NUMBER
1
TOTAL CAPACITANCE
2
(AT-4V, 1 MHz)
Ct-4 (pF)
QUALITY FACTOR
3
(AT-4V, 50 MHz)
Q-4 (MIN)
CAPACITANCE RATIO
2
C
T0
/C
T30
(MIN)
GC1500A
4
0.4
5000
4.2
GC1500B
0.6
4000
3.0
GC1500
0.8
3900
3.3
GC1501
1.0
3800
3.4
GC1502
1.2
3800
3.4
GC1503
1.5
3600
3.5
GC1504
1.8
3500
3.5
GC1505
2.2
3500
3.7
GC1506
2.7
3300
3.7
GC1507
3.3
3100
3.8
GC1508
3.9
2700
3.9
GC1509
4.7
2600
3.9
GC1510
5.6
2600
4.0
GC1511
6.8
2400
4.0
GC1512
8.2
2200
4.0
GC1513
10.0
2200
4.2
NOTES:
1. When ordering, specify the desired case style by adding its number as a suffix to the model number.
Some limitations apply - consult factory for details.
2. These values include a package capacitance of .18 P
.
.
3. Q is calculated from: Q=
1
2
fR C
5
j
where f=50 MHz and
R
I
= Series resistance measured a 1 GHz using transmission loss techniques. Capacitance is measured at 1 MHz.
4. GC1500A only available in Die Form.
SEMICONDUCTOR OPERATION
75 Technology Drive Lowell, MA 01851 Tel: 978-442-5600 Fax: 978-937-3748
16
Tuning Varactors
TOC
PDF 
ZIP