Document
TUNING VARACTOR
TUNING VARACTOR
Selection guide
Selection Guide
SURFACE MOUNT SILICON ABRUPT TUNING VARACTOR HIGH Q SILICON ABRUPT JUNCTION TUNING VARACTOR
- VBR = 30 V - VBR = 45 V SILICON HYPERABRUPT JUNCTION TUNING VARACTOR MICROWAVE SILICON HYPERABRUPT JUNCTION TUNING VARACTOR
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A tuning varactor is a P-N diode that acts as a voltage controlled capacitor. These devices perform the same function as the familiar, bulky, air dielectric stacked capacitors featured in traditional broadcast band receivers.
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TUNING VARACTOR
Plastic package Surface Mount Silicon abrupt tuning varactor
SOT23 SURFACE MOUNT SILICON ABRUPT TUNING VARACTOR
Description
This series of silicon tuning varactors have an epitaxial mesa design with a high temperature passivation. This technology is used to produce abrupt tuning varactor in SOT23 package. This family is designed for a low cost medium to high volume market that may be supplied in tape and reel for automated pick and place assembly on surface mount circuit boards.
Applications
The DH71000 series abrupt tuning varactor are offered in a large selection of capacitance range. They provide the highest Q factor (low reverse series resistance) available for a 30 volts silicon device. Typical applications include low noise narrow and moderate frequency bandwidth applications (VCO mainly) from HF to Microwave frequencies (up to 3 GHz). Other applications are voltage tuned filters, phase shifters, delay line, etc.
NOTE: Variation of the junction capacitance versus reverse voltage follows this equation:
[ ]Cj (Vr)= Cj (0 V) 1 + Vr
γ
φ
Vr : φ:
γ:
Reverse voltage Built-in potential .7V for Si .5 for abrupt tuning varactor
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TUNING VARACTOR
Plastic package Surface Mount Silicon abrupt tuning varactor
Electrical characteristics at Ta = +25° C Reverse breakdown voltage, Vb = @10 µA: 30 V min.
Electrical parameters Test Conditions
Type
Breakdown voltage VBR
IR = 10 µA
V min.
Junction capacitance
Cj F = 1 MHz
VR = 4 V pF
(1)
DH71010
30
DH71016
30
DH71020
30
DH71030
30
DH71045
30
DH71067
30
DH71100
30
(1) Other tolerance on request
1.0 ± 20% 1.6 ± 20% 2.0 ± 20% 3.0 ± 20% 4.5 ± 20% 6.7 ± 10% 10 ± 10%
Tuning ratio
Cj0V/Cj30V
typ.
4.0 4.5 4.6 4.7 4.8 4.9 5.0
Figure of merit
Q VR = 4 V F = 50 MHz
typ.
4300 4100 3900 3400 2200 2600 2200
Temperature ranges: Operating junction (Tj): -55° C to +125° C Packages
Storage:
-65° C to +150° C
Packages
SOD323
SOT23
SOT23
SOT23
SOT143
DH71010 DH71016 DH71020 DH71030 DH71045 DH71067 DH71100
DH71010-60 DH71016-60 DH71020-60 DH71030-60 DH71045-60 DH71067-60 DH71100-60
DH71010-51 DH71016-51 DH71020-51 DH71030-51 DH71045-51 DH71067-51 DH71100-51
(1) Other configuration available on request.
How to order?
DH71010
-
51
Diode type
Package information 51: single SOT23 53: dual common
cathode SOT23 54: dual common
anode SOT23 60: single SOD323 70: dual SOT143
DH71010-53 DH71016-53 DH71020-53 DH71030-53 DH71045-53 DH71067-53 DH71100-53
DH71010-54 DH71016-54 DH71020-54 DH71030-54 DH71045-54 DH71067-54 DH71100-54
DH71010-70 DH71016-70 DH71020-70 DH71030-70 DH71045-70 DH71067-70 DH71100-70
T3
Conditioning
T3: 3000 pieces tape & reel T10: 10000 pieces tape & reel blank: bulk
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TUNING VARACTOR
High Q silicon abrupt junction tuning varactor
HIGH Q SILICON ABRUPT JUNCTION TUNING VARACTOR
VBR 30 V
Description
This series of high Q epi-junction microwave tuning varactors (30 V) incorporates a passivated mesa technology. It is well suited for frequency tuning applications up to Ku band.
CHIP DIODES Characteristics at 25°C
Gold dia Ø
CHIP AND PACKAGED DIODES VBR (10 µA) ≥ 30 V junction Fig. of
capacitance merit Cj Q
Test Conditions
VR = 4 V VR = 4 V f = 1 MHZ f = 50 MHZ
PACKAGED DIODES (1)
Standard cases
Other cases
CASE CAPACITANCE
Cb
Tuning ratio CTO/CT30
CASE CAPACITANCE
Cb
Tuning ratio CTO/CT30
Type
Case µm
pF
Type
Case
Case
EH71004 EH71006 EH71008 EH71010 EH71012 EH71016 EH71020 EH71025 EH71030 EH71037 EH71045 EH71054
EH71067 EH71080 EH71100 EH71120 EH71150 EH71180 EH71200 EH71220 EH71270 EH71330 EH71390 EH71470 EH71560 EH71680 EH71820 EH71999
C2a C2a C2a C2a C2a C2a C2a C2a C2a C2a C2a C2a
C2a C2b C2b C2b C2b C2b C2b C2b C2b C2c C2c C2c C2c C2c C2d C2d
typ. ± 20 % (2) min.
Cb= 0.18 pF (3) min. Cb= 0.12 pF (3) min.
50
0.4
4500 DH71004
F27d
3.0
M208
3.3
60
0.6
4500 DH71006
F27d
3.4
M208
3.7
70
0.8
4400 DH71008
F27d
3.7
M208
4.0
80
1.0
4300 DH71010
F27d
4.0
M208
4.3
90
1.2
4200 DH71012
F27d
4.3
M208
4.5
100 1.6
4100 DH71016
F27d
4.5
M208
4.6
110 2.0
3900 DH71020
F27d
4.6
M208
4.7
120 2.5
3600 DH71025
F27d
4.6
M208
4.8
140 3.0
3400 DH71030
F27d
4.7
M208
4.8
150 3.7
3200 DH71037
F27d
4.7
M208
4.8
170 4.5
3000 DH71045
.