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Alpha Industries

SMV1247-079 Datasheet Preview

SMV1247-079 Datasheet

Hyperabrupt Tuning Varactors

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Hyperabrupt Tuning Varactors
Features
I High Capacitance Ratio,
C0.3 V/C4.7 V = 12 Typ.
I Multiple Packages SOT-23, SOD-323,
SC-70 and SC-79
I Designed for High Volume Commercial
Applications
I SPICE Models are Available
SMV1247–SMV1255
Description
The SMV1247–SMV1255 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.
Absolute Maximum Ratings
Characteristic
Reverse Voltage (VR)
Forward Current (IF)
Power Dissipation (PD)
Storage Temperature (TST)
Operating Temperature (TOP)
Value
15 V
20 mA
250 mW
-55°C to +150°C
-55°C to +125°C
Single
Single
Single
SC-79
SOD-323
SOT-23
o SMV1247-079
o SMV1248-001
o SMV1249-079 o SMV1249-011 o SMV1249-001
o SMV1251-079 o SMV1251-011 o SMV1251-001
o SMV1253-079
o SMV1255-079 o SMV1255-011 o SMV1255-001
LS = 0.7 nH
LS = 1.5 nH
LS = 1.5 nH
o Available through distribution.
For other packages or configurations, please contact the factory.
Common Anode Common Cathode
SOT-23
SOT-23
Common Anode
SC-70
o SMV1249-003
o SMV1255-003
LS = 1.5 nH
o SMV1251-004
o SMV1253-004
o SMV1255-004
LS = 1.5 nH
o SMV1249-073
o SMV1255-073
LS = 1.4 nH
Common Cathode
SC-70
o SMV1247-074
o SMV1251-074
LS = 1.4 nH
Alpha Industries, Inc. [781] 935-5150 Fax [617] 824-4579 Email sales@alphaind.com www.alphaind.com
Specifications subject to change without notice. 1/00A
1




Alpha Industries

SMV1247-079 Datasheet Preview

SMV1247-079 Datasheet

Hyperabrupt Tuning Varactors

No Preview Available !

Hyperabrupt Tuning Varactors
SMV1247–SMV1255
Electrical Specifications at 25°C
Part
Number
CT
@ 0.3 V
(pF)
SMV1247
SMV1248
SMV1249
SMV1251
Min.
6.5
15.0
28.0
38.0
Typ.
7
17
31
42
SMV1253
SMV1255
48.0 53
58.0 64
Reverse Voltage VR (IR = 10 µA): 15 V
Reverse Current IR (VR = 12 V): 20 nA
CT
@ 4.7 V
(pF)
Typ.
Max.
0.7 0.78
1.5 1.70
2.6 2.80
3.4 3.80
4.3 4.80
5.2 5.80
CT
@ 1V
(pF)
Typ.
4.4
12.3
18.2
28.1
37.0
43.3
CT
@ 3V
(pF)
Typ.
0.95
2.60
3.40
5.80
7.80
8.50
CT @ 0.3 V
CT @ 4.7 V
(Ratio)
Min.
Typ.
9.5 10.0
10.8 12.0
11.0 12.1
11.0 12.2
11.0 12.3
11.0 12.3
CT @ 1 V RS @ 3 V
Q
CT @ 3 V 500 MHz @ 3 V
(Ratio)
() 50 MHz
Typ.
Max.
Typ.
4.6 2.0 1500
4.7 1.8 700
5.3 1.5 600
4.8 1.3 400
4.7 1.2 350
5.1 1.0 350
Typical Performance Data
100.0
10.0
SMV1255
SMV1253
SMV1251
SMV1249
1.0
SMV1248
SMV1247
0.1
0 2.0 4.0 6.0 8.0
Reverse Voltage (V)
Capacitance vs. Reverse Voltage
4.0
3.5 SMV1247
3.0 SMV1248
2.5 SMV1249
SMV1251
2.0
1.5
1.0
0.5
0
0
SMV1253
SMV1255
1 234
Reverse Voltage (V)
5
Series Resistance vs. Reverse Voltage
@ 500 MHz
3
2 VR = 1 V
1
0
-1
-2 VR = 4 V
-3
-40 -20 0 20 40 60 80
Temperature (˚C)
Relative Capacitance Change
vs. Temperature
15
10
5
0
-5
-10
-15
-20
-25
-50
-25 0 25 50
Temperature (˚C)
75 100
Relative Series Resistance Change
vs. Temperature @ 500 MHz
2 Alpha Industries, Inc. [781] 935-5150 Fax [617] 824-4579 Email sales@alphaind.com www.alphaind.com
Specifications subject to change without notice. 1/00A


Part Number SMV1247-079
Description Hyperabrupt Tuning Varactors
Maker Alpha Industries
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SMV1247-079 Datasheet PDF






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