Surface Mount Mixer and
Detector Schottky Diodes
Features
I
Tight Parameter Distribution
I
Available as Singles and Pairs
I
100% DC Tested
I
Designed for High Volume Commercial
Applications
I
Available in Tape and Reel Packaging
Description
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, combining Alpha’s advanced semiconductor
technology with low cost packaging techniques. All diodes are
100% DC tested and deliver tight parameter distribution,
minimizing performance variability.They are available in SC-
70, SC-79, SOD-323, SOT-23 and SOT-143 packages.Wiring
configurations include singles, common cathode, series pairs
and unconnected pairs. Applications include low noise
receivers used in high sensitivity ID tags, wireless systems,
radio designs and may be used at frequencies to 10 GHz.
SPICE model parameters are included as a design tool.
Absolute Maximum Ratings
Characteristic
Reverse Voltage (V
R
)
Forward Current - Steady State (I
F
)
Power Dissipation (P
D
)
Storage Temperature (T
ST
)
Operating Temperature (T
OP
)
Junction Temperature (T
J
)
Soldering Temperature
Value
Rated V
B
50 mA
75 mW
-65°C to +150°C
-65°C to +150°C
150°C
260°C for 5 Seconds
Single
SC-79
Single
SOD-323
o
SMS1546-011
Cathode Mark
Single
SOT-23
o
SMS1546-001
Marking: SG1
o
SMS7621-001
Marking: SH1
o
SMS7630-001
Marking: SD1
L
S
= 1.5 nH
Series Pair
SOT-23
o
SMS1546-005
Marking: SG2
o
SMS7621-005
Marking: SH2
o
SMS7630-005
Marking: SD2
L
S
= 1.5 nH
SC-70
o
SMS7621-075
Marking: SH2
o
SMS7630-075
Marking: SD2
L
S
= 1.4 nH
Reverse
Series Pair
SOT-23
Unconnected
Pair
SOT-143
o
SMS1546-015
Marking: SG7
Reverse
Unconnected Pair
SOT-143
o
SMS7621-079
Cathode Mark
o
SMS7630-079
o
SMS7621-011
Cathode Mark
o
SMS7630-011
Cathode Mark
L
S
= 1.5 nH
o
SMS7621-006
Marking: SH8
o
SMS7630-006
Marking: SD8
L
S
= 1.5 nH
SC-70
o
SMS7621-076
Marking: SH8
o
SMS7630-076
Marking: SD8
L
S
= 1.4 nH
o
SMS7621-015
Marking: SH7
L
S
= 1.5 nH
o
SMS7630-020
Marking: SD0
L
S
= 1.5 nH
Anode Mark
L
S
= 0.7 nH
o
Available through distribution.
Alpha Industries, Inc.
[781] 935-5150
•
Fax
[617] 824-4579
•
Email
sales@alphaind.com
•
www.alphaind.com
Specifications subject to change without notice. 6/00A
1
Surface Mount Mixer and Detector Schottky Diodes
Electrical Specifications at 25°C (Per Junction)
Low Barrier Mixer and Detectors
Part Number
Barrier
V
B
@ 10
µ
A (V)
Min.
SMS1546 Series
SMS7621 Series
*R
T
is the slope resistance.
C
T
@ 0 V (pF)
Typ.
0.50
0.25
Pair Configuration
V
F
@ 1 mA (mV) (b) V
F
@ 1 mA (mV)
Max.
200–270
260–320
10
10
Ω
R
T
* @ 10 mA (Ω)
Max.
8
18
Low
Low
2
2
Zero Bias Detectors
Part Number
V
B
@ 100
µ
A (V)
Min.
SMS7630 Series
1.0
C
T
@ 0.15 V (pF)
Typ.
0.30
60–120
135–200
Pair Configuration
V
F
@ 0.1 mA (mV) V
F
@ 1 mA (mV) (b) VF @ 1 mA (mV)
Max.
10
Ω
R
V
(Ω)
Typ.
3500
10000.00
Detected Voltage (mV)
50
Ω
RF Input
RFC
10 M
Ω
Video Output
1000.00
100.00
10.00
1.00
-30
-20
-10
0
10
Input Power (dBm)
SPICE Model Parameters (Per Junction)
Parameter
IS
R
S
N
TT
C
J0
M
E
G
XTI
F
C
B
V
I
BV
V
J
V
A
V
eV
S
pF
Unit
A
Ω
SMS1546
3E-7
4
1.04
1E-11
0.38
0.36
0.69
2
0.5
3
1E-5
0.51
SMS7621
4E-8
12
1.05
1E-11
0.10
0.35
0.69
2
0.5
3
1E-5
0.51
SMS7630
5E-06
20
1.05
1E-11
0.14
0.40
0.69
2
0.5
2
1E-4
0.34
Typical Detector
Characteristics @ 1.8 GHz
2
Alpha Industries, Inc.
[781] 935-5150
•
Fax
[617] 824-4579
•
Email
sales@alphaind.com
•
www.alphaind.com
Specifications subject to change without notice. 6/00A
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