ALPHA SMV1283-011 Datasheet
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
■ High Tuning Ratio
■ SOD-323 Package
■ Designed for High Volume, Low Cost
Applications
■ Available in Tape and Reel Packaging
SMV1283-011
Description
The SMV1283-011 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 attractiv e for wideband
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 8.5 9.10 9.70 pF
Capacitance (CT)C
T
@ 26 V, VR= 26 V, F = 1 MHz 0.5 0.62 0.75 pF
Capacitance Ratio (CTR)C
T
(1 V)/CT(26 V) 14.70
Series Resistance (RS)V
R
= 1 V, F = 500 MHz 2.40 Ω
Breakdown V oltage (VBR)I
R
= 10 µA 28.0 V
Electrical Specifications at 25°C
Hyperabrupt Junction Tuning Varactor SMV1283-011
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
Capacitance vs. Voltage
0.1
1.0
10.0
100.0
0 5 10 15 20 25 30
Varactor Voltage (V)
Capacitance (pF)
Typical Performance Data Capacitance vs. Voltage
VR (V) CT(pF)
0 18.8820
1 8.7000
2 6.1400
3 4.3300
4 2.9500
5 2.0400
6 1.5680
7 1.3250
8 1.1880
9 1.0870
10 1.0123
12 0.9040
14 0.8295
16 0.7720
18 0.7280
20 0.6880
22 0.6580
24 0.6230
26 0.6160
28 0.6060
30 0.6040
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
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
SOD-323
Part C
J0
V
J
M
C
P
R
S
L
S
Number (pF) (V) (pF) (
ΩΩ))
(nH)
SMV1283-011 19 3 2.6 0.58 2.4 1.7
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