Datasheet SMV1249-001, SMV1249-003, SMV1249-011, SMV1249-073, SMV1249-079 Datasheet (ALPHA)

Characteristic Value

Reverse Voltage (VR) 15 V

Forward Current (IF) 20 mA

Power Dissipation (PD) 250 mW

Storage Temperature (TST) -55°C to +150°C

Operating Temperature (TOP) -55°C to +125°C

Absolute Maximum Ratings

Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [email protected] • www.alphaind.com 1

Specifications subject to change without notice. 1/00A

Hyperabrupt Tuning Varactors

Features

■ High Capacitance Ratio,
C

0.3 V/C4.7 V

= 12 Typ.

■ Multiple Packages SOT-23, SOD-323,
SC-70 and SC-79

■ Designed for High Volume Commercial
Applications

■ 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.

♦ Available through distribution.
For other packages or configurations, please contact the factory.

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

♦ SMV1248-001

♦ SMV1249-079 ♦ SMV1249-011 ♦ SMV1249-001 ♦ SMV1249-003 ♦ SMV1249-073

♦ SMV1251-079 ♦ SMV1251-011 ♦ SMV1251-001 ♦ SMV1251-004 ♦ SMV1251-074

♦ SMV1253-079 ♦ SMV1253-004

♦ SMV1255-079 ♦ SMV1255-011 ♦ SMV1255-001 ♦ SMV1255-003 ♦ SMV1255-004 ♦ SMV1255-073

L

S

= 0.7 nH LS= 1.5 nH LS= 1.5 nH LS= 1.5 nH LS= 1.5 nH LS= 1.4 nH LS= 1.4 nH

Hyperabrupt Tuning Varactors SMV1247–SMV1255

2 Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [email protected] • www.alphaind.com

Specifications subject to change without notice. 1/00A

0.1

1.0

10.0

100.0

6.0 8.04.0

Reverse Voltage (V)

Capacitance vs. Reverse Voltage

2.00

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

VR = 4 V

VR = 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

0

1.0

2.0

3.0

4.0

3.5

2.5

1.5

0.5

Reverse Voltage (V)

Series Resistance vs. Reverse Voltage

@ 500 MHz

01 2 3 45

R

S

(Ω)

SMV1247

SMV1251

SMV1253

SMV1255

SMV1248

SMV1249

Typical Performance Data

C

T

C

T

C

T

C

T

CT@ 0.3 V CT@ 1 V RS@ 3 V Q

Part @ 0.3 V @ 4.7 V @ 1 V @ 3 V CT@ 4.7 V CT@ 3 V 500 MHz @ 3 V

Number (pF) (pF) (pF) (pF) (Ratio) (Ratio) (ΩΩ) 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 2.0 1500

SMV1248 15.0 17 1.5 1.70 12.3 2.60 10.8 12.0 4.7 1.8 700

SMV1249 28.0 31 2.6 2.80 18.2 3.40 11.0 12.1 5.3 1.5 600

SMV1251 38.0 42 3.4 3.80 28.1 5.80 11.0 12.2 4.8 1.3 400

SMV1253 48.0 53 4.3 4.80 37.0 7.80 11.0 12.3 4.7 1.2 350

SMV1255 58.0 64 5.2 5.80 43.3 8.50 11.0 12.3 5.1 1.0 350

Electrical Specifications at 25°C

Reverse Voltage VR(IR= 10 µA): 15 V
Reverse Current I

R(VR

= 12 V): 20 nA

Hyperabrupt Tuning Varactors SMV1247–SMV1255

Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [email protected] • www.alphaind.com 3

Specifications subject to change without notice. 1/00A

Part C

JO

V

J

MCPR

S

Number (pF) (V) (pF) (ΩΩ)

SMV1247 9.22 13 10.5 0 2.0

SMV1248 21.54 17 14.0 0 1.8

SMV1249 39.00 17 14.0 0 1.5

SMV1250 47.00 17 14.0 0 1.5

SMV1251 60.00 17 14.0 0 1.3

SMV1253 70.00 17 14.0 0 1.2

SMV1255 82.00 17 14.0 0 1.0

Typical Capacitance Values

SPICE Model

SMV1247 SMV1248 SMV1249 SMV1251 SMV1253 SMV1255

VR(V) CT(pF) CT(pF) CT(pF) CT(pF) CT(pF) CT(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. 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.

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
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 SMV1247–SMV1255

4 Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [email protected] • www.alphaind.com

Specifications subject to change without notice. 1/00A

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

21

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

12

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.