Hyperabrupt Junction Tuning Varactor
SMV1270-079
Typical Performance Data
25
20
15
10
5
0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
Capacitance vs. Voltage
V
R
(V)
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
C
T
(pF)
23.64
17.81
13.69
10.74
8.60
7.03
5.87
5.00
4.35
3.85
Capacitance (pF)
Varactor Voltage (V)
Capacitance vs. Voltage
SPICE Model
5
Percent of Variation (%)
4
3
2
1
0
-1
-2
-3
-4
-40
-20
0
20
40
V
VAR
= 2.5 V
V
VAR
= 1 V
PORT
P_anode
port = 1
IND
L
S
L = L
S
DIODEM
Diode_Model
I
S
= 1.00e-14
R
S
= 0
N=1
T
T
= 0
C
JO
= C
JO
M=M
E
G
= 1.11
X
TI
= 3
K
F
=0
A
F
=1
F
C
= 0.5
B
V
= 0
I
BV
= 1e-3
I
SR
= 0
N
R
= 2
I
KF
= 0
N
BV
= 1
I
BVL
= 0
N
BVL
= 1
T
BV1
= 0
T
NOM
= 27
F
FE
= 1
V
VAR
= 4 V
RES
R
S
R = R
S
DIODE
Varactor_Diode
AREA = 1
MODEL = Diode_Model
MODE = nonlinear
CAP
C
P
C = C
P
60
80
Temperature (˚C)
Relative Capacitance
Change vs. Temperature
PORT
P_Cathode
port = 2
SC-79
CATHODE 0.006 (0.15 mm) MIN.
INDICATOR
0.010
(0.25 mm) MIN.
0.014
(0.35 mm) MAX.
1
2
Part
Number
SMV1270-079
C
JO
(pF)
30
V
J
(V)
12
M
8
C
P
(pF)
2
R
S
Ω
(Ω
)
0.7
L
S
(nH)
1.7
0.028
(0.70 mm) MIN.
0.035
(0.90 mm) MAX.
0.060 (1.50 mm) MIN.
0.067 (1.70 mm) MAX.
0.043 (1.10 mm) MIN.
0.051 (1.30 mm) MAX.
0.020
(0.50 mm) MIN.
0.028
(0.70 mm) MAX.
10˚ MAX.
10˚ MAX.
0.003
(0.07 mm) MIN.
0.008
(0.20 mm) MAX.
2
Alpha Industries, Inc.
[781] 935-5150
•
Fax
[617] 824-4579
•
Email
sales@alphaind.com
•
www.alphaind.com
Specifications subject to change without notice. 6/99A
ALPHA [ ALPHA INDUSTRIES ]
