Skyworks Solutions, Inc. Phone [781] 376-3000 Fax [781] 376-3100 sales@skyworksinc.com www.skyworksinc.com
200058 Rev. C Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice. January 20, 2005
1
SMV1231SMV1237: Hyperabrupt Tuning Varactors
DATA SHEET
Characteristic
Value
Reverse voltage (V
R
)
15 V
Forward current (I
F
)
20 mA
Power dissipation (P
D
)
250 mW
Storage temperature (T
ST
)
-55 C to +150 C
Operating temperature (T
OP
)
-55 C to +125 C
ESD human body model
Class 1B
Absolute Maximum Ratings
Features
High capacitance ratio
Low series resistance for low phase noise
Multiple packages SOT-23, SOD-323, SC-70 and SC-79
Designed for high volume commercial applications
Full characterization with SPICE models
Description
The SMV1231SMV1237 series of silicon hyperabrupt junction
varactor diodes is designed for use in VCOs with low tuning voltage
operation. The low resistance of these varactors makes them
appropriate for high Q resonators in wireless system VCOs
to frequencies beyond 2.5 GHz. The SMV1231SMV1237 series is
fully characterized for capacitance and resistance over tempera-
ture. SPICE model is provided.
Skyworks offers lead (Pb)-free "environmentally
friendly" packaging that is RoHS compliant
(European Parliament for the Restriction of
Hazardous Substances).
NEW
Performance is guaranteed only under the conditions listed in the specifications table and is
not guaranteed under the full range(s) described by the Absolute Maximum specifications.
Exceeding any of the absolute maximum/minimum specifications may result in permanent
damage to the device and will void the warranty.
CAUTION: 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. Static charges may easily produce poten-
tials of several kilovolts on the human body or
equipment, which can discharge without detection.
Industry-standard ESD precautions must be employed
at all times.
Skyworks Solutions, Inc. Phone [781] 376-3000 Fax [781] 376-3100 sales@skyworksinc.com www.skyworksinc.com
January 20, 2005 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice. 200058 Rev. C
DATA SHEET SMV1231SMV1237
2
C
T
C
T
C
T
@ 1 V
C
T
@ 1 V
R
S
@ 3 V
Q
Part
C
T
@ 1 V
@ 3 V
@ 6 V
C
T
@ 3 V
C
T
@ 6 V
500 MHz
@ 3 V
Number
(pF)
(pF)
(pF)
(Ratio)
(Ratio)
(
)
50 MHz
Min.
Max.
Typ.
Typ.
Min.
Max.
Min.
Max.
Max.
Typ.
SMV1231
1.43
1.72
0.97
0.61
1.5
1.8
2.5
2.8
2.90
1500
SMV1232
2.34
2.86
1.5
0.94
1.5
1.9
2.6
3.3
1.50
1400
SMV1233
3.00
3.60
1.8
1.10
1.5
1.9
2.6
3.3
1.20
1200
SMV1234
5.85
7.15
3.6
2.00
1.6
2.0
2.8
3.4
0.80
1000
SMV1235
10.35
12.65
6.4
3.60
1.6
2.0
2.9
3.4
0.60
750
SMV1236
15.50
18.50
9.2
5.30
1.6
2.0
3.0
3.5
0.50
700
SMV1237
45.00
54.00
26.9
14.40
1.6
2.0
3.0
3.5
0.25
500
Electrical Specifications at 25 C
Tested in -079 package.
Reverse Voltage V
R
(I
R
= 10
A): 15 V minimum.
Reverse Current I
R
(V
R
= 12 V): 20 nA maximum.
Single
Single
Single
Common Anode
Common Cathode
Common Anode
Common Cathode
SC-79
SOD-323
SOT-23
SOT-23
SOT-23
SC-70
SC-70
SMV1231-079
SMV1231-011
SMV1231-004
SMV1231-074
Marking: Cathode
Marking: JA
Marking: JA3
Marking: JA3
SMV1231-074LF
Marking: KA3
SMV1232-079
SMV1232-011
SMV1232-004
SMV1232-074
Marking: Cathode
Marking: CC
Marking: CC3
SMV1232-074LF
Marking: DP3
SMV1233-079
SMV1233-011
SMV1233-001
SMV1233-003
SMV1233-004
SMV1233-073
SMV1233-074
Marking: Cathode
Marking: VP
Marking: VP1
Marking: VP9
Marking: VP3
Marking: VP9
Marking: VP3
SMV1233-011LF
Marking: DP
SMV1234-079
SMV1234-011
SMV1234-001
SMV1234-003
SMV1234-004
SMV1234-073
SMV1234-074
Marking: Cathode
Marking: VQ
Marking: VQ1
Marking: VQ9
Marking: VQ3
Marking: VQ9
Marking: VQ3
SMV1234-079LF
SMV1234-011LF
Marking: Cathode
Marking: DQ
SMV1235-079
SMV1235-011
SMV1235-001
SMV1235-004
SMV1235-074
Marking: Cathode
Marking: VR
Marking: VR1
Marking: VR3
Marking: VR3
SMV1235-004LF
Marking: DR3
SMV1235-011LF
Marking: DR
SMV1236-079
SMV1236-011
SMV1236-001
SMV1236-004
SMV1236-074
Marking: Cathode
Marking: AQ
Marking: AQ1
Marking: AQ3
Marking: AQ3
SMV1236-079LF
SMV1236-011LF
SMV1236-004LF
Marking: Cathode
Marking: DQ
Marking: EQ3
SMV1237-001
SMV1237-004
SMV1237-074
Marking: VT1
Marking: VT3
Marking: VT3
L
S
= 0.7 nH
L
S
= 1.5 nH
L
S
= 1.5 nH
L
S
= 1.5 nH
L
S
= 1.5 nH
L
S
= 1.4 nH
L
S
= 1.4 nH
LF denotes lead (Pb)-free packaging option as an alternative to our standard
tin/lead (Sn/Pb) packaging.
DATA SHEET SMV1231SMV1237
Skyworks Solutions, Inc. Phone [781] 376-3000 Fax [781] 376-3100 sales@skyworksinc.com www.skyworksinc.com
200058 Rev. C Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice. January 20, 2005
3
0.1
10.0
1.0
100.0
6.0
8.0
4.0
Reverse Voltage (V)
Capacitance vs. Reverse Voltage
2.0
0
Ca
pacitance (pF)
SMV1237
SMV1236
SMV1235
SMV1231
SMV1234
SMV1233
SMV1232
-4
-3
-2
-1
0
1
2
3
4
5
-40
-20
0
20
40
60
80
Percentage Change (%)
Temperature (C)
Relative Capacitance Change
vs. Temperature
V
R
= 1 V
V
R
= 3 V
10
8
6
4
2
0
-2
-4
-6
-8
-40
-20
0
20
40
60
80
Percentage Change (%)
Temperature (C)
Relative Series Resistance Change
vs. Temperature @ 500 MHz
0
1
2
3
Reverse Voltage (V)
Series Resistance vs. Reverse Voltage
@ 500 MHz
0
1
2
3
4
5
R
S
(
)
SMV1232
SMV1231
SMV1233
SMV1234
SMV1235
SMV1237
SMV1236
Typical Performance Data
Skyworks Solutions, Inc. Phone [781] 376-3000 Fax [781] 376-3100 sales@skyworksinc.com www.skyworksinc.com
January 20, 2005 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice. 200058 Rev. C
DATA SHEET SMV1231SMV1237
4
Part
C
JO
V
J
C
P
R
S
Number
(pF)
(V)
M
(pF)
(
)
SMV1231
1.5
0.8
0.0
2.50
SMV1232
4.20
1.7
0.9
0.0
1.50
SMV1233
4.12
1.7
0.9
0.7
1.20
SMV1234
8.75
2.3
1.1
1.2
0.80
SMV1235
16.13
8.0
4.0
2.0
0.60
SMV1236
21.63
8.0
4.2
3.2
0.50
SMV1237
66.16
10.0
5.3
9.0
0.25
Typical Capacitance Values
SPICE Model
SMV1231
SMV1232
SMV1233
SMV1234
SMV1235
SMV1236
SMV1237
V
R
(V)
C
T
(pF)
C
T
(pF)
C
T
(pF)
C
T
(pF)
C
T
(pF)
C
T
(pF)
C
T
(pF)
0.0
2.350
4.15
5.08
9.63
18.22
26.75
71.82
0.5
1.870
3.22
3.95
7.53
14.12
20.61
56.10
1.0
1.580
2.67
3.28
6.28
11.67
17.02
46.89
1.5
1.400
2.28
2.80
5.39
9.91
14.38
40.33
2.0
1.220
1.97
2.41
4.68
8.52
12.29
35.13
2.5
1.090
1.72
2.09
4.09
7.36
10.56
30.71
3.0
0.970
1.51
1.82
3.58
6.40
9.16
26.87
3.5
0.882
1.35
1.62
3.15
5.62
8.04
23.57
4.0
0.794
1.22
1.45
2.81
4.99
7.19
20.83
4.5
0.732
1.13
1.33
2.54
4.50
6.53
18.62
5.0
0.683
1.05
1.24
2.32
4.11
6.01
16.87
5.5
0.648
0.99
1.16
2.15
3.80
5.61
15.48
6.0
0.613
0.94
1.10
2.02
3.55
5.28
14.36
6.5
0.590
0.90
1.05
1.90
3.34
5.02
13.46
7.0
0.567
0.86
1.01
1.80
3.17
4.81
12.72
7.5
0.551
0.84
0.98
1.72
3.03
4.64
12.11
8.0
0.534
0.81
0.96
1.65
2.91
4.49
11.61
9.0
0.512
0.78
0.92
1.55
2.73
4.28
10.87
10.0
0.497
0.76
0.90
1.47
2.61
4.13
10.38
11.0
0.492
0.75
0.88
1.42
2.53
4.02
10.06
12.0
0.487
0.74
0.87
1.38
2.47
3.95
9.84
13.0
0.480
0.73
0.86
1.35
2.43
3.89
9.68
14.0
0.472
0.73
0.85
1.33
2.40
3.84
9.56
15.0
0.466
0.72
0.84
1.32
2.38
3.80
9.47
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
V
J
= V
J
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
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.
DATA SHEET SMV1231SMV1237
Skyworks Solutions, Inc. Phone [781] 376-3000 Fax [781] 376-3100 sales@skyworksinc.com www.skyworksinc.com
200058 Rev. C Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice. January 20, 2005
5
Profile Feature
SnPb Eutectic Assembly
Lead (Pb)-Free Assembly 100% Sn
Average ramp-up rate (T
L
to T
P
)
3 C/second max.
3 C/second max.
Preheat
Temperature min. (T
SMIN
)
100 C
150 C
Temperature max. (T
SMAX
)
150 C
200 C
Time (min. to max.) (ts)
60120 seconds
6080 seconds
T
SMAX
to T
L
Ramp-up rate
--
3 C/second max.
Time maintained above:
Temperature (T
L
)
183 C
217 C
Time (t
L
)
60150 seconds
60150 seconds
Peak temperature (T
P
)
240 +0/-5 C
250 +0/-5 C
Time within 5 C of actual peak temperature (tp)
1030 seconds
2040 seconds
Ramp-down rate
6 C/second max.
6 C/second max.
Time 25 C to peak temperature
6 minutes max.
8 minutes max.
Recommended Solder Reflow Profiles
T
P
T
SMAX
T
SMIN
t
s
Preheat
t
p
Critical Zone
T
L
to T
L
t 25 C to Peak
Time
T
empera
ture
T
L
25 C
Reference JEDEC J-STD-020
I
L
All temperatures refer to the topside of the package, measured on the package body surface.
Reference JEDEC J-STD-020C.
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