Silicon Hyperabrupt Varactor Diode Chips
SMV2019 to SMV2023
Features
I
High Q for Low Loss Resonators
I
Low Leakage Current
I
High Tuning Ratio for Wideband VCOs
I
SPICE Model Parameters
I
Small Footprint Chip Design
Description
Alpha Industries’ product line of silicon hyperabrupt
junction varactor diode chips are processed using
established ion-implantation technology resulting in low
R
S
wide tuning ratio devices with high Q values. These
planar chips have a small outline size (12 x 12 mils
nominal) and are fully passivated resulting in low
leakage current and high reliability. These varactor chips
are intended for assembly in hybrid integrated circuit
resonators used in VCOs and analog tuned filters.
Electrical Specifications at 25°C
Part Number
SMV2019-000
SMV2020-000
SMV2021-000
SMV2022-000
SMV2023-000
C
J
@ 0 V
(pF)
1
Typ.
2.3
3.1
4.5
7.1
10.8
Min.
0.68
1.13
1.58
2.48
4.28
C
J
@ 4 V
(pF)
Max.
0.88
1.43
1.98
3.08
5.28
C
J
@ 20 V
(pF)
Min.
0.13
0.23
0.32
0.48
0.78
Max.
0.23
0.33
0.44
0.68
1.08
Q @ 4V
50 MHz
2
Min.
500
500
500
400
400
1 GHz
Ω
R
S
@ 4 V (Ω)
Typ.
4.8
4.1
2.8
2.2
1.4
I
R
@17.6 V
Contact
3
(nA)
Diam. (mils)
4
Max.
50
50
50
50
50
Nom.
2.00
2.50
3.00
3.75
5.00
1. All capacitance values specified at 1 MHz.
2. 50 MHz Q calculated from 1 GHz R
S
and 1 MHz C
J
.
3. V
B
at 10
µA
specified at 22 V Min.
4. Outline drawing 149-801.
Outline Drawing
149-801
ANODE METALIZED GOLD DOT
0.002 (0.051 mm) DIA. MIN.
0.010 (0.254 mm) MIN.
0.014 (0.356 mm) MAX. SQ.
Absolute Maximum Ratings
Characteristic
Reverse Voltage (V
R
)
Forward Current (I
F
)
Power Dissipation at 25°C (P
D
)
Operating Temperature (T
OP
)
Storage Temperature (T
ST
)
SILICON
Value
22 V
100 mA
250 mW
-55°C to +150°C
-65°C to +200°C
0.004 (0.127 mm) MIN.
0.006 (0.152 mm) MAX.
CATHODE METALIZED BACK
CONTACT - GOLD
Alpha Industries, Inc.
[781] 935-5150
•
Fax
[617] 824-4579
•
Email
sales@alphaind.com
•
www.alphaind.com
Specifications subject to change without notice. 8/01A
1
Silicon Hyperabrupt Varactor Diode Chips
SMV2109 to SMV2023
Typical Performance Data
12
11
10
9
8
7
6
5
4
3
2
1
0
0
6
SMV2019-000
Series Resistance (Ω)
5
4
3
2
1
0
Capacitance (pF)
SMV2023-000
SMV2022-000
SMV2021-000
SMV2020-000
SMV2019-000
SMV2020-000
SMV2021-000
SMV2022-000
SMV2023-000
5
10
15
20
0
4
8
12
16
20
Reverse Voltage (V)
Reverse Voltage (V)
Capacitance vs. Reverse Voltage
Series Resistance vs. Voltage @ 1 GHz
Typical Capacitance Values
V
R
(V)
0.0
0.5
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0
11.0
12.0
13.0
14.0
15.0
16.0
17.0
18.0
19.0
20.0
SMV2019 SMV2020
C
J
(pF)
C
J
(pF)
2.25
1.79
1.53
1.19
0.99
0.84
0.71
0.57
0.46
0.38
0.33
0.29
0.26
0.24
0.23
0.21
0.20
0.19
0.19
0.18
0.17
0.16
3.14
2.5
2.16
1.72
1.44
1.24
1.07
0.90
0.74
0.61
0.52
0.46
0.42
0.38
0.36
0.34
0.32
0.31
0.29
0.28
0.27
0.26
SMV2021
C
J
(pF)
4.48
3.57
3.09
2.45
2.09
1.83
1.60
1.37
1.17
0.97
0.81
0.69
0.61
0.56
0.51
0.48
0.45
0.43
0.41
0.39
0.38
0.36
SMV2022 SMV2023
C
J
(pF)
C
J
(pF)
7.08
5.66
4.88
3.89
3.19
2.71
2.30
1.87
1.52
1.25
1.07
0.94
0.85
0.78
0.73
0.69
0.65
0.62
0.59
0.57
0.55
0.54
10.76
8.76
7.67
6.31
5.38
4.75
4.21
3.66
3.17
2.68
2.25
1.89
1.66
1.49
1.35
1.24
1.16
1.10
1.04
0.99
0.95
0.91
SPICE Model
DIODEM
Diode_Model
I
S
= 1.00e-14
R
S
= R
S
N = 1, 2
T
T
= 0
C
JO
= C
JO
M=M
V
J
= V
J
E
G
= 1.11
X
TI
= 3
K
F
=0
A
F
=1
F
C
= 0.5
B
V
= 22
I
BV
= 1e-5
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
PORT
P_anode
port = 1
RES
R
S
R = R
S
DIODE
Varactor_Diode
AREA = 1
MODEL = Diode_Model
MODE = nonlinear
PORT
P_Cathode
port = 2
C
V
=
C
J0
1+ V
R
V
J
V
J
(V)
3.5
3.6
3.9
4.0
4.6
M
+ C
P
Part
Number
SMV2019
SMV2020
SMV2021
SMV2022
SMV2023
C
JO
(pF)
2.3
3.3
4.5
7.1
10.8
M
1.40
1.30
1.34
1.40
1.45
R
S
Ω
(Ω)
4.8
4.1
2.8
2.2
1.4
SPICE model parameters extracted from measured characteristics may not
reflect exact physical or electronic properties. See application note APN1004.
2
Alpha Industries, Inc.
[781] 935-5150
•
Fax
[617] 824-4579
•
Email
sales@alphaind.com
•
www.alphaind.com
Specifications subject to change without notice. 8/01A
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