ALPHA SMV1129-079, SMV1139-011, SMV1139-079, SMV1129-011, SMV1129-073 Datasheet
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
Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email sales@alphaind.com • www.alphaind.com 1
Specifications subject to change without notice. 10/99A
Hyperabrupt Junction Tuning Varactors
Features
■ High Q
■ Low Series Resistance for Low Phase
Noise
■ Multiple Packages SOD-323, SC-79
and SC-70
■ Designed for High Volume Commercial
Applications
■ SPICE Models are Available
SMV1129 and SMV1139
Description
The SMV1129 and SMV1139 silicon hyperabrupt junction
varactor diodes are designed for use in VCOs requiring
low resistance. The low resistance of these varactors
makes them appropriate for high Q resonators in
wireless system VCOs to frequencies beyond 2.5 GHz.
♦ Available through distribution.
For other packages or configurations, please contact the factory.
Single Single Common Anode
SOD-323 SC-79 SC-70
♦ SMV1129-011 ♦ SMV1129-079 SMV1129-073
♦ SMV1139-011 ♦ SMV1139-079
LS= 1.5 nH LS= 0.7 nH LS= 1.4 nH
CT@ 1 V CT@ 1 V RS@ 1 V
Part CT@ 1 V CT@ 3 V CT@ 6 V 500 MHz
Number (pF) (Ratio) (Ratio) (ΩΩ)
Min. Typ. Max. Min. Typ. Min. Typ. Max.
SMV1129 17.50 19.0 20.50 1.4 1.53 2.0 2.5 0.4
SMV1139 4.95 5.4 5.85 1.4 1.53 2.0 2.5 0.6
Electrical Specifications at 25°C
Reverse Voltage VR(IR= 10 µA): 12 V
Reverse Current I
R(VR
= 10 V): 20 nA
Hyperabrupt Junction Tuning Varactors SMV1129 and SMV1139
2 Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email sales@alphaind.com • www.alphaind.com
Specifications subject to change without notice. 10/99A
Part C
JO
V
J
MCPR
S
Number (pF) (V) (pF) (ΩΩ)
SMV1129 27.5 2.8 1.10 0 0.40
SMV1139 8.0 1.2 0.65 0 0.60
Reverse Voltage (V)
Capacitance vs. Reverse Voltage
Capacitance (pF)
0
5
10
15
20
25
30
0246810
SMV1139
SMV1129
Typical Performance Data Capacitance vs. Reverse Voltage
SPICE Model
SMV1129 SMV1139
VR(V) CT(pF) CT(pF)
0 27.5 8.0
1 18.9 5.5
2 15.0 4.4
3 12.5 3.7
4 10.7 3.1
5 9.3 2.7
6 8.1 2.5
7 7.1 2.3
8 6.3 2.2
9 5.7 2.1
10 5.2 2.0
11 4.9 2.0
12 4.7 1.9
1. Values extracted from measured performance.
2. For package inductance (L
S
) refer to package type.
3. For more details refer to the “Varactor SPICE Models for RF VCO
Applications” Application Note.
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
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.
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
SC-79
0.060 (1.50 mm) MIN.
0.067 (1.70 mm) MAX.
0.010
(0.25 mm) MIN.
0.014
(0.35 mm) MAX.
0.043 (1.10 mm) MIN.
0.051 (1.30 mm) MAX.
0.020
(0.50 mm) MIN.
0.028
(0.70 mm) MAX.
0.003
(0.07 mm) MIN.
0.008
(0.20 mm) MAX.
10˚ MAX.
10˚ MAX.
0.028
(0.70 mm) MIN.
0.035
(0.90 mm) MAX.
0.006 (0.15 mm) MIN.
CATHODE
INDICATOR
12
Loading...