Skyworks Solutions, Inc. [781] 376-3000
Fax [781] 376-3100 Email sales@skyworksinc.com www.skyworksinc.com
1
Specifications subject to change without notice. 8/03A
Characteristic
Value
Reverse Voltage (V
R
)
15 V
Forward Current (I
F
)
20 mA
Power Dissipation (P
D
)
250 mW
Storage Temperature (T
ST
)
-55C to +150C
Operating Temperature (T
OP
)
-55C to +125C
Absolute Maximum Ratings
Hyperabrupt Tuning Varactors
Features
Designed for High Volume Commercial
Applications
High Capacitance Ratio,
C
0.3 V
/C
4.7 V
= 12 Typ.
Multiple Packages SOT-23, SOD-323,
SC-70 and SC-79
Available Lead (Pb)-Free MSL-1 @ 250C
per JEDEC J-STD-020
SPICE Models are Available
Available in Tape and Reel Packaging
SMV1247SMV1255
Description
The SMV1247SMV1255 series of silicon hyperabrupt
junction varactor diodes are designed for use in VCOs with
low tuning voltage operation. This family of varactors is
characterized for capacitance and resistance over
temperature. SPICE models are provided.
LF denotes Lead (Pb)-Free packaging.
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
SMV1247-079
SMV1247-074
SMV1247-079LF
SMV1248-001
SMV1248-004
SMV1248-074
SMV1249-079
SMV1249-011
SMV1249-001
SMV1249-003
SMV1249-073
SMV1249-074
SMV1251-079
SMV1251-011
SMV1251-001
SMV1251-004
SMV1251-074
SMV1253-079
SMV1253-004
SMV1255-079
SMV1255-011
SMV1255-001
SMV1255-004
SMV1255-073
SMV1255-079LF
L
S
= 0.7 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
Lead (Pb)-Free "environmentally friendly"
packaging available: Skyworks offers the
SMV1247-079LF Lead (Pb)-Free package as
a green alternative.
NEW
Hyperabrupt Tuning Varactors
SMV1247SMV1255
2
Skyworks Solutions, Inc. [781] 376-3000
Fax [781] 376-3100 Email sales@skyworksinc.com www.skyworksinc.com
Specifications subject to change without notice. 8/03A
0.1
1.0
10.0
100.0
6.0
8.0
4.0
Reverse Voltage (V)
Capacitance vs. Reverse Voltage
2.0
0
Capacitance (pF)
SMV1253
SMV1251
SMV1249
SMV1255
SMV1248
SMV1247
-3
-2
-1
0
1
2
3
-40
-20
0
20
40
60
80
Percentage Change (%)
Temperature (C)
Relative Capacitance Change
vs. Temperature
V
R
= 4 V
V
R
= 1 V
-50
-25
0
25
50
75
100
Percentage Change (%)
Temperature (C)
Relative Series Resistance Change
vs. Temperature @ 500 MHz
-25
-20
-10
-15
-5
0
5
10
15
Reverse Voltage (V)
Series Resistance vs. Reverse Voltage
@ 500 MHz
0
1
2
3
4
5
R
S
(
)
0
2
4
6
8
10
SMV1247
SMV1248
SMV1249
SMV1251
SMV1253
SMV1255
Typical Performance Data
C
T
C
T
C
T
C
T
C
T
@ 0.3 V
C
T
@ 1 V R
S
@ 3 V
Q
Part
@ 0.3 V
@ 4.7 V
@ 1 V
@ 3 V
C
T
@ 4.7 V
C
T
@ 3 V
500 MHz
@ 3 V
Number
(pF)
(pF)
(pF)
(pF)
(Ratio)
(Ratio)
(
)
50 MHz
Min.
Typ.
Typ.
Max.
Typ.
Typ.
Min.
Typ.
Typ.
Max.
Typ.
SMV1247
6.5
7
0.7
0.78
4.4
0.95
9.5
10.0
4.6
6.0
1500
SMV1248
15.0
17
1.5
1.70
12.3
2.60
10.8
12.0
4.7
3.3
700
SMV1249
28.0
31
2.6
2.80
18.2
3.40
11.0
12.1
5.3
2.2
600
SMV1251
38.0
42
3.4
3.80
28.1
5.80
11.0
12.2
4.8
1.6
400
SMV1253
48.0
53
4.3
4.80
37.0
7.80
11.0
12.3
4.7
1.4
350
SMV1255
58.0
64
5.2
5.80
43.3
8.50
11.0
12.3
5.1
1.3
350
Electrical Specifications at 25C
Reverse Voltage V
R
(I
R
= 10
A): 15 V
Reverse Current I
R
(V
R
= 12 V): 20 nA
Hyperabrupt Tuning Varactors
SMV1247SMV1255
Skyworks Solutions, Inc. [781] 376-3000
Fax [781] 376-3100 Email sales@skyworksinc.com www.skyworksinc.com
3
Specifications subject to change without notice. 8/03A
Part
C
JO
V
J
M
C
P
R
S
Number
(pF)
(V)
(pF)
(
)
SMV1247
9.22
13
10.5
0
4.9
SMV1248
21.54
13
10.5
0
2.4
SMV1249
39.00
17
14.0
0
1.7
SMV1251
60.00
17
14.0
0
1.4
SMV1253
70.00
17
14.0
0
1.1
SMV1255
82.00
17
13.0
0
1.0
Typical Capacitance Values
SPICE Model
SMV1247
SMV1248
SMV1249
SMV1251
SMV1253
SMV1255
V
R
(V)
C
T
(pF)
C
T
(pF)
C
T
(pF)
C
T
(pF)
C
T
(pF)
C
T
(pF)
0.0 8.86 22.62
37.35 53.65
69.32
81.21
0.5 6.17
16.32
25.88
38.23
50.23
58.28
1.0
4.37
12.33
18.18
28.09
37.07
43.27
1.5
2.96
9.12
12.08
20.13
27.57
31.49
2.0
1.88
6.27
7.27
13.55
19.37
21.50
2.5
1.22
3.93
4.44
8.60
12.39
13.40
3.0
0.95
2.57
3.40
5.78
7.77
8.51
3.5
0.83
1.95
2.96
4.57
5.77
6.51
4.0
0.77
1.71
2.72
3.95
4.86
5.58
4.5
0.73
1.59
2.51
3.58
4.34
5.07
5.0
0.70
1.49
2.38 3.33
4.01
4.76
5.5
0.68
1.44
2.30
3.16
3.78
4.58
6.0
0.67
1.40
2.24
3.03
3.62
4.46
6.5
0.66
1.36
2.19
2.94
3.50
4.39
7.0
0.65
1.33
2.14
2.88
3.41
4.33
7.5
0.64
1.31
2.09
2.83
3.34
4.29
8.0
0.64
1.30
2.03
2.79
3.28
4.26
1. Model was designed to fit measured data in the range of up to 4 V.
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
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
Hyperabrupt Tuning Varactors
SMV1247SMV1255
4
Skyworks Solutions, Inc. [781] 376-3000
Fax [781] 376-3100 Email sales@skyworksinc.com www.skyworksinc.com
Specifications subject to change without notice. 8/03A
Profile Feature
SnPb Eutectic Assembly
Lead (Pb)-Free Assembly 100% Sn
Average Ramp-Up Rate (T
L
to T
P
)
3C/Second Max.
3C/Second Max.
Preheat
Temperature Min. (T
Smin
)
100C
150C
Temperature Max. (T
Smax
)
150C 200C
Time (Min. to Max.) (ts)
60120 Seconds
6080 Seconds
T
Smax
to T
L
Ramp-up Rate
--
3C/Second Max.
Time Maintained Above:
Temperature (T
L
) 183C
217C
Time (t
L
)
60150 Seconds
60150 Seconds
Peak Temperature (T
P
)
240 +0/-5C
250 +0/-5C
Time Within 5C of Actual Peak Temperature (tp)
1030 Seconds
2040 Seconds
Ramp-Down Rate
6C/Second Max.
6C/Second Max.
Time 25C 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 25C to Peak
Time
T
emper
ature
T
L
25C
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-020B.
Hyperabrupt Tuning Varactors
SMV1247SMV1255
Skyworks Solutions, Inc. [781] 376-3000
Fax [781] 376-3100 Email sales@skyworksinc.com www.skyworksinc.com
5
Specifications subject to change without notice. 8/03A
SOT-23
3
2
1
0.035 (0.89 mm) MIN.
0.044 (1.12 mm) MAX.
0.0005 (0.01 mm) MIN.
0.004 (0.10 mm) MAX.
0.012 (0.30 mm) MIN.
0.020 (0.50 mm) MAX.
0.003 (0.080 mm) MIN.
0.008 (0.20 mm) MAX.
8 MAX.
0.022 (0.55 mm) REF.
0.110 (2.80 mm) MIN.
0.120 (3.04 mm) MAX.
0.083 (2.10 mm) MIN.
0.104 (2.64 mm) MAX.
0.037 (0.95 mm) REF.
0.047 (1.20 mm) MIN.
0.055 (1.40 mm) MAX.
0.076 (1.92 mm) REF.
0.020 (0.51 mm) REF.
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
2
1
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
1
2
SC-70
3
2
1
0.031 (0.80 mm) MIN.
0.039 (1.00 mm) MAX.
0.000 (0.00 mm) MIN.
0.004 (0.10 mm) MAX.
0.010 (0.25 mm) MIN.
0.016 (0.40 mm) MAX.
0.071 (1.80 mm) MIN.
0.087 (2.20 mm) MAX.
0.071 (1.80 mm) MIN.
0.094 (2.40 mm) MAX.
0.045 (1.15 mm) MIN.
0.053 (1.35 mm) MAX.
0.026 (0.65 mm) REF.
0.051 (1.30 mm) REF.
0.004 (0.10 mm) MIN.
0.007 (0.18 mm) MAX.
0.004 (0.10 mm) MIN.
0.012 (0.30 mm) MAX.
0.014 (0.35 mm) REF.
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