ALPHA SMV1281-011

Hyperabrupt Junction Tuning Varactor
SMV1281-011
Features
■ High Tuning Ratio
■ SOD-323 Package
■ Designed for High Volume, Low Cost
Applications
■ Available in Tape and Reel Packaging
Description
The SMV1281-011 is a surface mount varactor diode in the
SOD-323 plastic package. It is designed for very high
capacitance tuning ratio while having low series resistance,
which makes this device especially attractive for wideband
VCO applications.
Absolute Maximum Ratings
Characteristic
Value
Forward Current (IF)
20 mA
Power Dissipation (PD)
250 mW
Storage Temperature (TST)
-55°C to +150°C
Operating Temperature (TOP)
-55°C to +125°C
Electrical Specifications at 25°C
Parameter
Condition
Min.
Typ.
Max.
Unit
Reverse Current (IR)
VR = 20 V
20.0
nA
Capacitance (CT)
1V
7.8
8.6
9.5
pF
Capacitance (CT)
20 V
0.6
0.7
0.8
pF
Capacitance Ratio (CTR)
1 V/20 V
Series Resistance (RS)
VR = 1 V, F = 500 MHz
Breakdown Voltage (VBR)
IR = 10 µA
12.0
1.7
24.0
Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email sales@alphaind.com • www.alphaind.com
Specifications subject to change without notice. 1/01A
Ω
V
1
Hyperabrupt Junction Tuning Varactor
SMV1281-011
Typical Performance Data
Capacitance vs. Reverse Voltage
VR (V)
CT (pF)
0
13.30
1
8.60
2
6.30
8
3
4.80
6
4
3.60
5
2.70
6
2.00
2
7
1.60
0
8
1.40
14
Capacitance (pF)
12
10
4
0
2
4
6
8
10
12 14 16 18 20
Reverse Voltage (V)
Capacitance vs. Reverse Voltage
SOD-323
0.090 (2.30 mm) MIN.
0.108 (2.74 mm) MAX.
0.045 (1.15 mm) MIN.
0.053 (1.35 mm) MAX. 1
0.010
(0.25 mm) MIN.
0.016
(0.40 mm) MAX.
2
CATHODE
INDICATOR
0.063 (1.60 mm) MIN.
0.071 (1.80 mm) MAX.
0.008 (0.20 mm) NOM.
0.006
(0.15 mm) TYP.
9
1.20
10
1.10
11
1.00
12
0.94
13
0.89
14
0.85
15
0.81
16
0.78
17
0.75
18
0.73
19
0.71
20
0.69
SPICE Model
0.050
(1.25 mm) MAX.
PORT
P_anode
port = 1
0.004 (0.10 mm) MAX.
IND
LS
L = LS
0.010 (0.25 mm) MIN.
RES
RS
R = RS
CAP
CP
C = CP
DIODE
Varactor_Diode
AREA = 1
MODEL = Diode_Model
MODE = nonlinear
PORT
P_Cathode
port = 2
2
DIODEM
Diode_Model
IS = 1.00e-14
RS = 0
N=1
TT = 0
CJO = CJO
M=M
VJ
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
Number
CJ0
(pF)
VJ
(V)
M
CP
(pF)
RS
Ω)
(Ω
LS
(nH)
SMV1281-011
13
14
6
0.62
1.7
1.2
Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email sales@alphaind.com • www.alphaind.com
Specifications subject to change without notice. 1/01A