Hyperabrupt Junction Tuning Varactor
SMV1281-011
Features
s
High Tuning Ratio
s
SOD-323 Package
s
Designed for High Volume, Low Cost
Applications
s
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
Forward Current (I
F
)
Power Dissipation (P
D
)
Storage Temperature (T
ST
)
Operating Temperature (T
OP
)
Value
20 mA
250 mW
-55°C to +150°C
-55°C to +125°C
Electrical Specifications at 25°C
Parameter
Reverse Current (I
R
)
Capacitance (C
T
)
Capacitance (C
T
)
Capacitance Ratio (C
TR
)
Series Resistance (R
S
)
Breakdown Voltage (V
BR
)
1V
20 V
1 V/20 V
V
R
= 1 V, F = 500 MHz
I
R
= 10
µA
24.0
Condition
V
R
= 20 V
7.8
0.6
8.6
0.7
12.0
1.7
Ω
V
Min.
Typ.
Max.
20.0
9.5
0.8
Unit
nA
pF
pF
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
1
Hyperabrupt Junction Tuning Varactor
SMV1281-011
Typical Performance Data
14
12
Capacitance vs. Reverse Voltage
V
R
(V)
0
1
C
T
(pF)
13.30
8.60
6.30
4.80
3.60
2.70
2.00
1.60
1.40
1.20
1.10
1.00
0.94
0.89
0.85
0.81
0.78
0.75
0.73
0.71
0.69
Capacitance (pF)
10
8
6
4
2
0
0
2
4
6
8
10
12 14 16 18 20
2
3
4
5
6
7
8
9
10
11
12
Reverse Voltage (V)
Capacitance vs. Reverse Voltage
SOD-323
0.090 (2.30 mm) MIN.
0.108 (2.74 mm) MAX.
0.010
(0.25 mm) MIN.
0.016
(0.40 mm) MAX.
0.063 (1.60 mm) MIN.
0.071 (1.80 mm) MAX.
13
14
15
16
17
18
19
CATHODE
INDICATOR
0.045 (1.15 mm) MIN.
0.053 (1.35 mm) MAX.
1
2
20
0.008 (0.20 mm) NOM.
0.006
(0.15 mm) TYP.
0.050
(1.25 mm) MAX.
SPICE Model
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
V
J
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
0.004 (0.10 mm) MAX.
0.010 (0.25 mm) MIN.
RES
R
S
R = R
S
DIODE
Varactor_Diode
AREA = 1
MODEL = Diode_Model
MODE = nonlinear
CAP
C
P
C = C
P
PORT
P_Cathode
port = 2
Part
Number
SMV1281-011
C
J0
(pF)
13
V
J
(V)
14
M
6
C
P
(pF)
0.62
R
S
Ω
(Ω
)
1.7
L
S
(nH)
1.2
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
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
