Alpha Industries, Inc. [781] 935-5150
Fax [617] 824-4579
Email sales@alphaind.com
www.alphaind.com
1
Specifications subject to change without notice. 6/99A
Hyperabrupt Junction Tuning Varactor
Features
s
High Tuning Ratio
s
Low Series Resistance
s
SOD-323 Package
s
Designed for High Volume, Low Cost
Applications
s
Available in Tape and Reel Packaging
SMV1265-011
Description
The SMV1265-011 is a surface mount varactor diode in the
SOD-323 package. It is designed for very high capacitance
tuning ratio while having low series resistance, which makes
this device especially attractive for wide band VCO
applications.
Characteristic
Value
Forward Current (I
F
)
20 mA
Power Dissipation (P
D
)
250 mW
Storage Temperature (T
ST
)
-55C to +150C
Operating Temperature (T
OP
)
-55C to +125C
Absolute Maximum Ratings
Parameter
Condition
Min.
Typ.
Max.
Unit
Reverse Current (I
R
)
V
R
= 26 V
20.00
nA
Capacitance (C
T
)
C
T
@ 1 V, V
R
= 1 V, F = 1 MHz
12.50
13.8
14.70
pF
Capacitance (C
T
)
C
T
@ 26 V, V
R
= 26 V, F = 1 MHz
0.58
0.7
0.83
pF
Capacitance Ratio (C
TR
)
C
T
(1 V)/C
T
(26 V)
17.70
19.5
Series Resistance (R
S
)
V
R
= 1 V, F = 470 MHz
2.4
Breakdown Voltage (V
BR
)
I
R
= 10
A
28.00
V
Electrical Specifications at 25C
Hyperabrupt Junction Tuning Varactor
SMV1265-011
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
1
100.0
10.0
1.0
0
5
10
15
20
25
30
Capacitance (pF)
Voltage (V)
Capacitance vs. Voltage
0.090 (2.30 mm) MIN.
0.108 (2.74 mm) MAX.
0.045 (1.15 mm) MIN.
0.053 (1.35 mm) MAX.
0.050
(1.25 mm) MAX.
0.006
(0.15 mm) TYP.
0.008 (0.20 mm) NOM.
0.004 (0.10 mm) MAX.
0.010 (0.25 mm) MIN.
0.010
(0.25 mm) MIN.
0.016
(0.40 mm) MAX.
0.063 (1.60 mm) MIN.
0.071 (1.80 mm) MAX.
CATHODE
INDICATOR
2
1
Typical Performance Data
SOD-323
DIODE
Varactor_Diode
AREA = 1
MODEL = Diode_Model
MODE = nonlinear
RES
R
S
R = R
S
IND
L
S
L = L
S
CAP
C
P
C = C
P
PORT
P_anode
port = 1
PORT
P_Cathode
port = 2
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
SPICE Model
Capacitance vs. Voltage
V
R
(V)
C
T
(pF)
0.0
22.47
0.5
17.41
1.0
14.26
2.0
10.23
3.0
7.40
4.0
5.15
5.0
3.38
6.0
2.37
7.0
1.86
8.0
1.61
9.0
1.45
10.0
1.30
12.0
1.12
14.0
1.05
16.0
0.97
18.0
0.91
20.0
0.83
22.0
0.78
24.0
0.75
26.0
0.73
28.0
0.73
30.0
0.71
Part
C
JO
V
J
M
C
P
R
S
L
S
Number
(pF)
(V)
(pF)
(
))
(nH)
SMV1265-011
22.5
30
13
0.71
2.4
1.7
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