DATA SHEET
SMV121x Series: Hyperabrupt Junction Tuning Varactors
Applications
Low tuning voltage VCOs
High-volume commercial systems
Features
High capacitance ratio: C1V/C4V = 5 typical
Packages rated MSL1, 260 °C per JEDEC J-STD-020
Skyworks GreenTM products are compliant with
all applicable legislation and are halogen-free.
For additional information, refer to Skyworks
Definition of GreenTM, document number
SQ04–0074.
Description
The SMV121x series of silicon hyperabrupt junction varactor
diodes are designed for use in Voltage Controlled Oscillators
(VCOs) with a low tuning voltage operation. This family of
varactors is characterized for capacitance and resistance over
temperature.
Table 1 describes the various packages and markings of the
SMV121x varactors.
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DATA SHEET • SMV121x VARACTORS
Table 1. Packaging and Marking
Single
Single
Common Cathode
Single
SC-79
Green™
SOT-23
SOT-23
SOD-882
Green™
SMV1212-079LF
Marking: Cathode and HA
SMV1212-001LF
Green™
Marking: EB1
SMV1213-079LF
Marking: Cathode and HC
♦SMV1213-001LF
SMV1213-004LF
Green™
Marking: GD3
SMV1213-004LF
Marking: J
LS = 1.4 nH
LS = 0.45 nH
Green™
Marking: D86
SMV1215-001LF
Green™
Marking: DM1
LS = 0.7 nH
LS = 1.5 nH
The Pb-free symbol or “LF” in the part number denotes a lead-free, RoHS-compliant package unless otherwise noted as Green™.
Tin/lead (Sn/Pb) packaging is not recommended for new designs.
Electrical and Mechanical Specifications
Package and Handling Information
The absolute maximum ratings of the SMV121x varactors are
provided in Table 2. Electrical specifications are provided in
Table 3. Typical capacitance values are listed in Table 4. Typical
performance characteristics of the SMV121x varactors are
illustrated in Figures 1 through 4.
Instructions on the shipping container label regarding exposure to
moisture after the container seal is broken must be followed.
Otherwise, problems related to moisture absorption may occur
when the part is subjected to high temperature during solder
assembly.
The SPICE model for the SMV121x varactors is shown in Figure 5
and the associated model parameters are provided in Table 6.
The SMV121x series of varactors are rated to Moisture Sensitivity
Level 1 (MSL1) at 260 C. They can be used for lead or lead-free
soldering. For additional information, refer to the Skyworks
Application Note, Solder Reflow Information, document number
200164.
Package Dimensions
Package dimensions are shown in Figures 6 to 10 (even
numbers), and tape and reel dimensions are provided in Figures 7
to 11 (odd numbers).
Care must be taken when attaching this product, whether it is
done manually or in a production solder reflow environment.
Production quantities of this product are shipped in a standard
tape and reel format.
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DATA SHEET • SMV121x VARACTORS
Table 2. SMV121x Varactors Absolute Maximum Ratings1
Parameter
Symbol
Minimum
Maximum
Units
12
V
Reverse voltage
VR
Forward current
IF
20
mA
Power dissipation
PDIS
250
mW
Operating temperature
TOP
–55
+125
C
Storage temperature
TSTG
–55
+150
C
Electrostatic discharge:
ESD
1000
500
100
V
V
V
Charged Device Model (CDM), Class 3
Human Body Model (HBM), Class 1B
Machine Model (MM), Class A
1 Exposure to maximum rating conditions for extended periods may reduce device reliability. There is no damage to device with only one parameter set at the limit and all other parameters set
at or below their nominal value. Exceeding any of the limits listed here may result in permanent damage to the device.
ESD HANDLING: Although this device is designed to be as robust as possible, electrostatic discharge (ESD) can damage this device.
This device must be protected at all times from ESD when handling or transporting. Static charges may easily produce
potentials of several kilovolts on the human body or equipment, which can discharge without detection.
Industry-standard ESD handling precautions should be used at all times.
Table 3. SMV121x Varactors Electrical Specifications1
(TOP = 25 C, Unless Otherwise Noted)
Part
Number
CT @ 1 V
(pF)
CT @ 2.5 V
(pF)
CT @ 4 V
(pF)
CT @ 1 V
CT @ 2.5 V
(Ratio)
CT @ 1 V
CT @ 4 V
(Ratio)
RS @ 4 V,
500 MHz
(Ω)
Min
Typ
Min
Max
Typ
Max
Typ
Typ
Typ
SMV1212
42.0
50.0
18.0
27.0
9
12.0
2
5
0.8
SMV1213
17.0
22.0
8.5
10.5
4
5.5
2
5
1.4
SMV1214
14.5
16.0
6.5
7.8
3
4.8
2
5
1.7
SMV1215
8.7
9.5
4.3
5.5
2
2.9
2
5
2.8
1 Performance is guaranteed only under the conditions listed in this table.
Reverse voltage Vr (Ir = 10 μA) = 12 V minimum
Reverse current Ir (Vr = 8 V) = 20 nA maximum
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DATA SHEET • SMV121x VARACTORS
Table 4. Typical Capacitance Values
CT (pF)
VR
(V)
SMV1212
SMV1213
SMV1214
SMV1215
0
72.4
30.0
26.0
14.8
0.5
55.3
22.8
19.6
11.3
1.0
44.9
18.1
15.6
9.1
1.5
36.9
15.3
12.4
7.5
2.0
29.9
12.3
9.6
6.0
2.5
22.9
9.2
6.8
4.5
3.0
16.3
6.4
4.7
3.1
3.5
11.8
4.5
3.5
2.3
4.0
9.3
3.5
2.9
1.9
4.5
7.9
3.0
2.5
1.7
5.0
7.0
2.6
2.3
1.5
5.5
6.4
2.4
2.1
1.4
6.0
6.0
2.2
2.0
1.3
6.5
5.7
2.1
1.9
1.3
7.0
5.5
2.0
1.8
1.2
7.5
5.3
1.9
1.8
1.2
8.0
5.1
1.9
1.7
1.2
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DATA SHEET • SMV121x VARACTORS
200057-001
200057-002
Typical Performance Characteristics
Figure 1. Capacitance vs Reverse Voltage
Figure 2. Series Resistance vs Reverse Voltage @ 500 MHz
+15
+10
Percentage Change (%)
VR = 1 V
+1
0
–1
–2
VR = 4 V
–3
–40
–20
0
+20
+40
+60
+80
Temperature (°C)
Figure 3. Relative Capacitance Change vs Temperature
+5
0
–5
–10
200057-004
+2
200057-003
Percentage Change (%)
+3
–15
–40
–20
0
+20
+40
+60
+80
Temperature (°C)
Figure 4. Relative Series Resistance Change vs Temperature
@ 500 MHz
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DATA SHEET • SMV121x VARACTORS
PORT
P_anode
port = 1
IND
LS
L = LS
RES
RS
R = RS
CAP
CP
C = CP
DIODE
Varactor_Diode
AREA = 1
MODEL = Diode_Model
MODE = nonlinear
DIODEM
Diode_Model
IS = 1.00e-14
RS = 0
N=1
TT = 0
CJO = CJO
M=M
VJ = VJ
EG = 1.11
XTI = 3
KF =0
AF =1
PORT
P_Cathode
port = 2
FC = 0.5
BV = VB
IBV = 1e-3
ISR = 0
NR = 2
IKF = 0
NBV = 1
IBVL = 0
NBVL = 1
TBV1 = 0
TNOM = 27
FFE = 1
200057-005
Figure 5. SPICE Model
Table 5. SPICE Model Parameters1
Part Number
CJO
(pF)
VJ
(V)
M
CP
(pF)
RS
(Ω)
SMV1212
72.47
110
67
4.5
0.8
SMV1213
28.90
190
105
2.2
1.4
SMV1214
22.74
190
106
1.5
1.7
SMV1215
14.36
190
115
1.1
2.8
1 Values extracted from measured performance.
For package inductance (LS, refer to Table 1.
For more details, refer to the Skyworks Application Note, Varactor SPICE Model for Approved RF VCO Applications, document number 200315.
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DATA SHEET • SMV121x VARACTORS
Box
or
Bar
Polarity
Indicator Area
0.006 (0.15 mm) Min
0.010
(0.25 mm) Min
0.014
(0.35 mm) Max
1
2
0.028
(0.70 mm) Min
0.035
(0.90 mm) Max
0.060 (1.50 mm) Min
0.067 (1.70 mm) Max
0.043 (1.10 mm) Min
0.051 (1.30 mm) Max
10° 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
Dimensions are in inches (millimeters shown in parentheses)
200057-006
Figure 6. SC-79 Package Dimensions
Ø1.50± 0.10
4.00 ± 0.10
4.00 ± 0.10
2.00 ± 0.05
0.229 ± 0.02 (T)
1.75 ± 0.10
B
A
B
Pin 1 Indicator
0.80 ± 0.05 (Ko)
Section B
8.00 ± 0.20
A
3.50 ± 0.05
1.40 ± 0.05
1.95 ± 0.05 (Bo)
2° Max
Ø0.50± 0.05
0.39 ± 0.05
2o Max
0.90 ± 0.05 (Ao)
Notes:
Section A
1. Carrier tape: black conductive polycarbonate or polystyrene.
2. Cover tape material: transparent conductive PSA.
3. Cover tape size: 5.4 mm width.
4. ESD-surface resistivity is ≤1 x 108 Ohms/square per
EIA, JEDEC TNR Specification.
5. All measurements are in millimeters.
200057-007
Figure 7. SC-79 Tape and Reel Dimensions
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DATA SHEET • SMV121x VARACTORS
0.110 (2.80 mm) Min
0.120 (3.04 mm) Max
0.012 (0.30 mm) Min
0.020 (0.50 mm) Max
3
0.083 (2.10 mm) Min
0.104 (2.64 mm) Max
0.047 (1.20 mm) Min
0.055 (1.40 mm) Max
2
1
0.037 (0.95 mm) Ref
0.020 (0.51 mm) Ref
0.076 (1.92 mm) Ref
0.035 (0.89 mm) Min
0.044 (1.12 mm) Max
0.003 (0.080 mm) Min
0.008 (0.20 mm) Max
8° Max.
0.0005 (0.01 mm) Min
0.004 (0.10 mm) Max
0.022 (0.55 mm) Ref
200057-008
Dimensions are in inches (millimeters shown in parentheses)
Figure 8. SOT-23 Package Dimensions
4.00
ø1.00 Min
ø1.5 + 0.1/–0
4.00
(See Note 5)
1.75 ± 0.10
3.50 ± 0.05
A
2.70 (Bo)
R 0.3 Max
2.2
1.20 (Ko)
0.8 ± 0.05
1.0
R 0.5 Typ
Pin 1 Indicator
A
3.10 (Ao)
Section A
Notes:
1.
2.
3.
4.
5.
6.
7.
Carrier tape: black conductive polycarbonate.
Cover tape material: transparent conductive PSA.
Cover tape size: 5.40 mm width.
Tolerance ±0.10 mm.
Ten sprocket hole pitch cumulative tolerance: ±0.2 mm.
All measurements are in millimeters.
Alternative carrier tape dimensions are:
Ao = 3.3
Bo = 2.9
Ko = 1.22
200057-009
Figure 9. SOT-23 Tape and Reel Dimensions
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8.00 + 0.3/–0.1
2.00 ± 0.05
0.25 ± 0.05
DATA SHEET • SMV121x VARACTORS
0.03 C
Seating Plane
0.05/0.00
Pin 1 Indicator
5
2X 0.25 ± 0.05
0.10 M A B
C
0.05
2X
0.325
Terminal 1
1.000
0.650
B
A
0.600
0.46 + 0.04
–0.06
0.05
2X 0.50 ± 0.05
0.10 M A B
4
2X
Notes:
1.
2.
3.
4.
All measurements are in millimeters.
Dimensions and tolerances according to ASME Y14.5M-1994.
These packages are used principally for discrete devices.
This dimension includes stand-off height and package body thickness,
but does not include attached features, e.g., external heatsink or chip capacitors.
An integral heatslug is not considered an attached feature.
5. This dimension is primarily terminal plating, but does not include small metal protrusion.
200057-010
Figure 10. SOD-882 Package Dimensions
4.00 ± 0.10
Cathode
Indicator
2.00 ± 0.05
∅1.55 ± 0.05 (D0)
0.20
8.00 ± 0.1
1.75 ± 0.10
3.50 ± 0.05
1.15 ± 0.05 (Bo)
A
∅0.40 ± 0.05 (D1)
0.47 ± 0.05 (Ko)
2.00 ± 0.05
B
B
A
Section A
0.70 ± 0.05 (A0)
Notes:
1.
2.
3.
4.
5.
Carrier tape: black conductive polycarbonate.
Cover tape: transparent conductive material.
Cover tape size: 5.4 mm width.
ESD surface resistivity is ≥1 x 104 ~ ≤ 1 x 108 Ohms/square.
All dimensions are in millimeters.
Section B
200057-011
Figure 11. SOD-882 Tape and Reel Dimensions
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DATA SHEET • SMV121x VARACTORS
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