Hyperabrupt Tuning Varactors
SMV1247–SMV1255
Electrical Specifications at 25°C
Part
Number
SMV1247
SMV1248
SMV1249
SMV1251
SMV1253
SMV1255
6.5
15.0
28.0
38.0
48.0
58.0
C
T
@ 0.3 V
(pF)
Min.
Typ.
7
17
31
42
53
64
0.7
1.5
2.6
3.4
4.3
5.2
C
T
@ 4.7 V
(pF)
Typ.
Max.
0.78
1.70
2.80
3.80
4.80
5.80
C
T
@ 1V
(pF)
Typ.
4.4
12.3
18.2
28.1
37.0
43.3
C
T
@ 3V
(pF)
Typ.
0.95
2.60
3.40
5.80
7.80
8.50
C
T
@ 0.3 V
C
T
@ 4.7 V
(Ratio)
Min.
9.5
10.8
11.0
11.0
11.0
11.0
Typ.
10.0
12.0
12.1
12.2
12.3
12.3
C
T
@ 1 V R
S
@ 3 V
C
T
@ 3 V 500 MHz
Ω
(Ratio)
(Ω)
Typ.
4.6
4.7
5.3
4.8
4.7
5.1
Max.
2.0
1.8
1.5
1.3
1.2
1.0
Q
@ 3V
50 MHz
Typ.
1500
700
600
400
350
350
Reverse Voltage V
R
(I
R
= 10
µA):
15 V
Reverse Current I
R
(V
R
= 12 V): 20 nA
Typical Performance Data
100.0
SMV1255
SMV1253
4.0
3.5
3.0
2.5
SMV1247
SMV1248
SMV1249
SMV1251
Capacitance (pF)
10.0
SMV1251
R
S
(Ω)
SMV1249
2.0
1.5
1.0
1.0
SMV1248
SMV1247
0.1
0
2.0
4.0
6.0
8.0
0.5
0
0
1
2
SMV1253
SMV1255
3
4
5
Reverse Voltage (V)
Reverse Voltage (V)
Capacitance vs. Reverse Voltage
Series Resistance vs. Reverse Voltage
@ 500 MHz
15
3
Percentage Change (%)
2
1
0
-1
-2
-3
-40
-20
0
V
R
= 1 V
Percentage Change (%)
10
5
0
-5
-10
-15
-20
-25
-50
-25
0
25
50
75
100
V
R
= 4 V
20
40
60
80
Temperature (˚C)
Temperature (˚C)
Relative Capacitance Change
vs. Temperature
Relative Series Resistance Change
vs. Temperature @ 500 MHz
2
Alpha Industries, Inc.
[781] 935-5150
•
Fax
[617] 824-4579
•
Email
sales@alphaind.com
•
www.alphaind.com
Specifications subject to change without notice. 1/00A
ALPHA [ ALPHA INDUSTRIES ]
