DATA SHEET
Surface Mount Mixer and Detector Schottky Diodes
Applications
Sensitive RF and microwave detector circuits
Sampling and mixer circuits
High-volume wireless
WiFi and mobile
Low-noise receivers in high-sensitivity ID tags
Radio designs
Features
Tight parameter distribution
Available as singles, pairs, and dual pairs
Packages rated MSL1, 260 C per JEDEC J-STD-020
Description
Skyworks GreenTM products are compliant with
all applicable legislation and are halogen-free.
For additional information, refer to Skyworks
Definition of GreenTM, document number
SQ04–0074.
These low-cost, surface mountable, plastic packaged silicon
mixer Schottky diodes are designed for RF and microwave mixers
and detectors. They include low barrier diodes and zero-bias
detectors that combine Skyworks advanced semiconductor
technology with low-cost packaging techniques. All diodes are
100 percent DC tested and deliver tight parameter distribution,
which minimizes performance variability.
These diodes are available in SOD-882, SC-79, SOT-23, and
Molded Interconnect System (MIS) packages. Wiring
configurations include singles, common cathode, series pairs,
unconnected pairs, and dual series pairs. They may be used at
frequencies up to 24 GHz.
Table 1 describes the various packages and marking of the mixer
and detector Schottky diodes.
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DATA SHEET • MIXER AND DETECTOR SCHOTTKY DIODES
Table 1. Schottky Diode Packaging and Marking
Single
Single
SC-79
Green™
SOT-23
Series Pair
SOT-23
Reverse Series Pair
Unconnected Pair
Single
SOT-23
MIS
Green™
SOD-882
Green™
SMS7621-517
Marking: H
Pb-Free
♦SMS7621-079LF
Marking: Cathode and SA
SMS7621-001LF
Green™
Marking: XH1
♦SMS7630-079LF
Marking: Anode and SC
LS = 0.7 nH
LS = 1.5 nH
♦SMS7621-005LF
♦SMS7621-006LF
Green™
Marking: XH2
Green™
Marking: XH8
SMS7630-005LF
Green™
Marking: XD2
♦SMS7630-006LF
LS = 1.5 nH
LS = 1.5 nH
SMS7621-040LF
Marking: E
SMS7630-040LF
Marking: P
Green™
Marking: XD8
LS = 0.6 nH
LS = 0.45 nH
The Pb-free symbol or “LF” in the part number denotes a lead-free, RoHS-compliant package unless otherwise noted as Green™.
Tin/lead (Sn/Pb) packaging is not recommended for new designs.
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DATA SHEET • MIXER AND DETECTOR SCHOTTKY DIODES
Electrical and Mechanical Specifications
Package and Handling Information
The absolute maximum ratings of the mixer and detector Schottky
diodes are provided in Table 2. Electrical specifications are
provided in Tables 3 and 4. The associated SPICE model
parameters are provided in Table 5. A typical detector schematic
diagram is shown in Figure 1.
Instructions on the shipping container label regarding exposure to
moisture after the container seal is broken must be followed.
Otherwise, problems related to moisture absorption may occur
when the part is subjected to high temperature during solder
assembly.
Typical performance characteristics are illustrated in Figures 2
and 3. Package dimensions are shown in Figures 4 to 10 (even
numbers), and tape and reel dimensions are provided in Figures 5
to 11 (odd numbers).
The mixer and detector Schottky diodes are rated to Moisture
Sensitivity Level 1 (MSL1) at 260 C for 5 seconds. They can be
used for lead or lead-free soldering. For additional information,
refer to the Skyworks Application Note, Solder Reflow Information,
document number 200164.
Care must be taken when attaching this product, whether it is
done manually or in a production solder reflow environment.
Production quantities of this product are shipped in a standard
tape and reel format.
Table 2. Absolute Maximum Ratings1
Parameter
Symbol
Reverse voltage
Minimum
VR
Maximum
Units
Rated VB
V
Forward current, steady state
IF
50
mA
Power dissipation
PD
75
mW
Storage temperature
TSTG
–65
+150
C
Operating temperature
TA
–65
+150
C
Junction temperature
TJ
+150
C
1 Exposure to maximum rating conditions for extended periods may reduce device reliability. There is no damage to device with only one parameter set at the limit and all other parameters set
at or below their nominal value. Exceeding any of the limits listed here may result in permanent damage to the device.
ESD HANDLING: 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 when handling or transporting. Static charges may easily produce
potentials of several kilovolts on the human body or equipment, which can discharge without detection.
Industry-standard ESD handling precautions should be used at all times.
Table 3. Electrical Specifications1
(TA = +25 C Per Junction, Unless Otherwise Noted)
Part Number
SMS7621 series
Barrier
Minimum VB @ 10 μA
(V)
Typical CT @ 0 V
(pF)
VF @ 1 mA
(mV)
Maximum Pair Configuration
ΔVF @ 1 mA
(mV)
Maximum RT2
(Ω)
Low
2
0.25
260 to 320
10
18 @ 5 mA
1 Performance is guaranteed only under the conditions listed in this table.
2 RT is the slope resistance.
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DATA SHEET • MIXER AND DETECTOR SCHOTTKY DIODES
Table 4. Electrical Specifications1
(TA = +25 C Per Junction, Unless Otherwise Noted)
Part Number
SMS7630 series
Minimum VB
@ 100 μA
(V)
Typical CT @ 0.15 V
(pF)
VF @ 0.1 mA
(mV)
VF @ 1 mA
(mV)
Maximum Pair Configuration
ΔVF @ 1 mA
(mV)
Typical RV
(Ω)
1
0.3
60 to 120
135 to 240
10
5000
1 Performance is guaranteed only under the conditions listed in this table.
Table 5. SPICE Model Parameters (Per Junction)
Parameter
Units
SMS7621 Series
SMS7630 Series
IS
A
4E-8
5E-6
RS
Ω
12
20
N
–
1.05
1.05
TT
sec
1E-11
1E-11
CJO
pF
0.1
0.14
M
–
0.35
0.40
EG
eV
0.69
0.69
XTI
–
2
2
FC
–
0.5
0.5
BV
V
3
2
IBV
A
1E-5
1E-4
VJ
V
0.51
0.34
50 Ω
RF Input
RFC
10 Ω
Video Output
200041-001
Figure 1. Typical Detector Circuit
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DATA SHEET • MIXER AND DETECTOR SCHOTTKY DIODES
Typical Performance Characteristics
0.9
10000
100
10
1
–30
–20
–10
0
+10
Input Power (dBm)
Figure 2. Typical Detector Characteristics @ 1.8 GHz
0.7
0.6
0.5
0.4
0.3
0.2
200041-003
Forward Voltage (mV)
1000
200041-002
Detected Voltage (mV)
0.8
0.1
0
0
5
10
15
20
25
30
35
40
Forward Bias Current (mA)
Figure 3. SMS7621 Forward Voltage vs Forward Bias Current
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DATA SHEET • MIXER AND DETECTOR SCHOTTKY DIODES
0.058 (1.47 mm)
0.054 (1.37 mm)
Pin 1
Indicator
Pin 1
0.032 (0.813 mm)
0.026 (0.660 mm)
Pin 4
0.048 (1.23 mm)
0.044 (1.13 mm)
Pin 2
Pin 3
(1.03)
(0.73)
(0.30)
(0.00)
(1.27)
(0.87)
Side View
(0.40)
(0.00)
Top View
Pin 3
Pin 2
(0.138 x 45)
Pin 1
Pin 4
(0.070) All Around
Bottom View
Dimensions are in inches (millimeters shown in parentheses)
200041-004
Figure 4. MIS Package Dimension Drawing
4.00
Pin 1 Indicator
2.00 ± 0.05 (See Note 3)
4.00 (See Note 1)
0.25 ± 0.05
∅1.50 +0.1/–0
∅1.00 Min
B
8.0 +0.3/–0.1
1.75 ± 0.10
B
A
R 0.10 Max
3.50 ± 0.05
(See Note 3)
5° Typ
1.33 ± 0.05 (Bo)
A
R 0.1 Typ
0.83 ± 0.05 (Ko)
1.57 ± 0.05 (Ao)
A
R 0.20
0.06
0.01
B
Notes:
1. 10-sprocket hole pitch cumulative tolerance ±0.2 mm.
2. Carrier tape: black conductive polycarbonate or polystyrene.
3. Pocket position relative to sprocket hole measured
as true position of pocket, not pocket hole.
4. ESD-surface resistivity is ≤1 x 108 Ohms/square per
EIA, JEDEC TNR Specification.
5. Cover tape material: transparent conductive PSA with 5.4 mm width.
6. All measurements are in millimeters.
Figure 5. MIS Tape and Reel Dimensions
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200041-005
DATA SHEET • MIXER AND DETECTOR SCHOTTKY DIODES
Box
or
Bar
Polarity
Indicator Area
(Note 2)
0.006 (0.15 mm) Min
0.010
(0.25 mm) Min
0.014
(0.35 mm) Max
1
2
0.028
(0.70 mm) Min
0.035
(0.90 mm) Max
0.060 (1.50 mm) Min
0.067 (1.70 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
10° Max
0.003
(0.07 mm) Min
0.008
(0.20 mm) Max
10° Max
Notes:
1. Dimensions are in inches (millimeters shown in parentheses).
2. Cathode indicator for SMS7621-079LF
Anode indicator for SMS7630-079LF
200041-006
Figure 6. SC-79 Package Dimension Drawing
Ø1.50± 0.10
4.00 ± 0.10
4.00 ± 0.10
2.00 ± 0.05
0.229 ± 0.02 (T)
1.75 ± 0.10
B
A
B
Pin 1 Indicator
0.80 ± 0.05 (Ko)
B
8.00 ± 0.20
A
3.50 ± 0.05
1.40 ± 0.05
1.95 ± 0.05 (Bo)
2° Max
Ø0.50± 0.05
0.39 ± 0.05
2o Max
0.90 ± 0.05 (Ao)
A
Notes:
1. Carrier tape: black conductive polycarbonate or polystyrene.
2. Cover tape material: transparent conductive PSA.
3. Cover tape size: 5.4 mm width.
4. ESD-surface resistivity is ≤1 x 108 Ohms/square per
EIA, JEDEC TNR Specification.
5. All measurements are in millimeters.
200041-007
Figure 7. SC-79 Tape and Reel Dimensions
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DATA SHEET • MIXER AND DETECTOR SCHOTTKY DIODES
0.03 C
Seating Plane
0.05/0.00
Pin 1 Indicator
2X
5
2X 0.25 ± 0.05
C
0.05
0.10 M A B
0.325
Terminal 1
1.000
0.650
B
A
0.600
0.46 + 0.04
–0.06
0.05
2X 0.50 ± 0.05
0.10 M A B
4
2X
Notes:
1.
2.
3.
4.
All measurements are in millimeters.
Dimensions and tolerances according to ASME Y14.5M-1994.
These packages are used principally for discrete devices.
This dimension includes stand-off height and package body thickness,
but does not include attached features, e.g., external heatsink or chip capacitors.
An integral heatslug is not considered an attached feature.
5. This dimension is primarily terminal plating, but does not include small metal protrusion.
200041-008
Figure 8. SOD-882 Package Dimension Drawing
4.00 ± 0.10
Cathode
Indicator
2.00 ± 0.05
∅1.55 ± 0.05 (D0)
0.20
8.00 ± 0.1
1.75 ± 0.10
3.50 ± 0.05
1.15 ± 0.05 (Bo)
A
∅0.40 ± 0.05 (D1)
0.47 ± 0.05 (Ko)
2.00 ± 0.05
B
B
A
A
0.70 ± 0.05 (A0)
Notes:
1.
2.
3.
4.
5.
Carrier tape: black conductive polycarbonate.
Cover tape: transparent conductive material.
Cover tape size: 5.4 mm width.
ESD surface resistivity is ≥1 x 104 ~ ≤ 1 x 108 Ohms/square.
All dimensions are in millimeters.
B
Figure 9. SOD-882 Tape and Reel Dimensions
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200041-009
DATA SHEET • MIXER AND DETECTOR SCHOTTKY DIODES
0.110 (2.80 mm) Min
0.120 (3.04 mm) Max
0.012 (0.30 mm) Min
0.020 (0.50 mm) Max
3
0.083 (2.10 mm) Min
0.104 (2.64 mm) Max
0.047 (1.20 mm) Min
0.055 (1.40 mm) Max
2
1
0.037 (0.95 mm) Ref
0.020 (0.51 mm) Ref
0.076 (1.92 mm) Ref
0.035 (0.89 mm) Min
0.044 (1.12 mm) Max
0.003 (0.080 mm) Min
0.008 (0.20 mm) Max
8° Max
0.0005 (0.01 mm) Min
0.004 (0.10 mm) Max
0.022 (0.55 mm) Ref
Dimensions are in inches (millimeters shown in parentheses)
200041-010
Figure 10. SOT-23 Package Dimension Drawing
4.00
ø1.00 Min.
ø1.5 + 0.1/–0
4.00
(See Note 5)
2.70 (Bo)
R 0.3 Max
2.2
1.20 (Ko)
0.8 ± 0.05
1.75 ± 0.10
3.50 ± 0.05
A
1.0
R 0.5 Typ
Pin 1 Indicator
8.00 + 0.3/–0.1
2.00 ± 0.05
0.25 ± 0.05
A
3.10 (Ao)
A
Notes:
1.
2.
3.
4.
5.
6.
7.
Carrier tape: black conductive polycarbonate.
Cover tape material: transparent conductive PSA.
Cover tape size: 5.40 mm width.
Tolerance ±0.10 mm.
Ten sprocket hole pitch cumulative tolerance: ±0.2 mm.
All measurements are in millimeters.
Alternative carrier tape dimensions are:
Ao = 3.3
Bo = 2.9
Ko = 1.22
200041-011
Figure 11. SOT-23 Tape and Reel Dimensions
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DATA SHEET • MIXER AND DETECTOR SCHOTTKY DIODES
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