Page 1
Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [email protected] • www.alphaind.com 1
Specifications subject to change without notice. 6/99A
Hyperabrupt Junction Tuning Varactor
Features
■ High Tuning Ratio
■ Low Series Resistance
■ SOD-323 Package
■ Designed for High Volume, Low Cost
Applications
■ 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 (IF) 20 mA
Power Dissipation (PD) 250 mW
Storage Temperature (TST) -55°C to +150°C
Operating Temperature (TOP) -55°C to +125°C
Absolute Maximum Ratings
Parameter Condition Min. Typ. Max. Unit
Reverse Current (IR)V
R
= 26 V 20.00 nA
Capacitance (CT)C
T
@ 1 V, VR= 1 V, F = 1 MHz 12.50 13.8 14.70 pF
Capacitance (CT)C
T
@ 26 V, VR= 26 V, F = 1 MHz 0.58 0.7 0.83 pF
Capacitance Ratio (CTR)C
T
(1 V)/CT(26 V) 17.70 19.5
Series Resistance (RS)V
R
= 1 V, F = 470 MHz 2.4 Ω
Breakdown V oltage (VBR)I
R
= 10 µA 28.00 V
Electrical Specifications at 25°C
Page 2
Hyperabrupt Junction Tuning Varactor SMV1265-011
2 Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [email protected] • 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
21
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
VR (V) CT(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) (
ΩΩ))
(nH)
SMV1265-011 22.5 30 13 0.71 2.4 1.7
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