SMV1251 View Datasheet(PDF) - Alpha Industries
Part Name
Description
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SMV1251 Datasheet PDF : 4 Pages
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Hyperabrupt Tuning Varactors
SMV1247–SMV1255
Typical Capacitance Values
VR (V)
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
6.5
7.0
7.5
8.0
SMV1247
CT (pF)
8.86
6.17
4.37
2.96
1.88
1.22
0.95
0.83
0.77
0.73
0.70
0.68
0.67
0.66
0.65
0.64
0.64
SMV1248
CT (pF)
22.62
16.32
12.33
9.12
6.27
3.93
2.57
1.95
1.71
1.59
1.49
1.44
1.40
1.36
1.33
1.31
1.30
SMV1249
CT (pF)
37.35
25.88
18.18
12.08
7.27
4.44
3.40
2.96
2.72
2.51
2.38
2.30
2.24
2.19
2.14
2.09
2.03
SMV1251
CT (pF)
53.65
38.23
28.09
20.13
13.55
8.60
5.78
4.57
3.95
3.58
3.33
3.16
3.03
2.94
2.88
2.83
2.79
SMV1253
CT (pF)
69.32
50.23
37.07
27.57
19.37
12.39
7.77
5.77
4.86
4.34
4.01
3.78
3.62
3.50
3.41
3.34
3.28
SMV1255
CT (pF)
81.21
58.28
43.27
31.49
21.50
13.40
8.51
6.51
5.58
5.07
4.76
4.58
4.46
4.39
4.33
4.29
4.26
SPICE Model
IND
LS
L = LS
RES
RS
R = RS
DIODE
Varactor_Diode
AREA = 1
MODEL = Diode_Model
MODE = nonlinear
PORT
P_anode
port = 1
CAP
CP
C = CP
PORT
P_Cathode
port = 2
DIODEM
Diode_Model
IS = 1.00e-14
RS = 0
N=1
TT = 0
CJO = CJO
M=M
EG = 1.11
XTI = 3
KF =0
AF =1
FC = 0.5
BV = 0
IBV = 1e-3
ISR = 0
NR = 2
IKF = 0
NBV = 1
IBVL = 0
NBVL = 1
TBV1 = 0
TNOM = 27
FFE = 1
Part
CJO
VJ
Number (pF)
(V)
M
CP
RS
(pF)
(Ω)
SMV1247 9.22
13
10.5
0
2.0
SMV1248 21.54
17
14.0
0
1.8
SMV1249 39.00
17
14.0
0
1.5
SMV1250 47.00
17
14.0
0
1.5
SMV1251 60.00
17
14.0
0
1.3
SMV1253 70.00
17
14.0
0
1.2
SMV1255 82.00
17
14.0
0
1.0
1. Values extracted from measured performance.
2. For package inductance (LS) refer to package type.
3. For more details refer to the “Varactor SPICE Models for RF VCO
Applications” Application Note.
Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email sales@alphaind.com • www.alphaind.com
3
Specifications subject to change without notice. 1/00A
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