Alpha Industries, Inc. [781] 935-5150
Fax [617] 824-4579 Email sales@alphaind.com www.alphaind.com
1
Specifications subject to change without notice. 1/00A
Surface Mount General
Purpose 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
This series of 8, 20 and 70 V rated low cost plastic packaged
Schottky diodes are designed for general purpose use in RF
applications as detectors, mixers and switches and in digital
pulse forming applications. All diodes are fully characterized
including SPICE model parameters 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.
Available in tape and reel for pick and place manufacturing.
Characteristic
Value
Reverse Voltage (V
R
)
Rated V
B
Forward Current - Steady State (I
F
)
50 mA
Forward Current - 1 mS Pulse (I
F
)
1A
Power Dissipation (P
D
)
75 mW
Storage Temperature (T
ST
)
-65C to +150C
Operating Temperature (T
OP
)
-65C to +150C
Junction Temperature (T
J
)
150C
Soldering Temperature
260C for 5 Seconds
ESD Human Body Model
Class 1B
Absolute Maximum Ratings
Single
Single
Single
Common Cathode
Series Pair
Unconnected Pair
SC-79
SOD-323
SOT-23
SOT-23
SOT-23
SOT-143
o SMS3922-079
o SMS3922-011
o SMS3922-001
o SMS3922-004
o SMS3922-005
o SMS3922-015
Cathode Mark
Cathode Mark
Marking: SA1
Marking: SA3
Marking: SA2
Marking: SA7
o SMS3923-079
o SMS3923-011
o SMS3923-001
o SMS3923-004
o SMS3923-005
o SMS3923-015
Cathode Mark
Cathode Mark
Marking: SB1
Marking: SB3
Marking: SB2
Marking: SB7
o SMS3924-079
o SMS3924-011
o SMS3924-001
o SMS3924-004
o SMS3924-005
o SMS3924-015
Cathode Mark
Cathode Mark
Marking: SC1
Marking: SC3
Marking: SC2
Marking: SC7
L
S
= 0.7 nH
L
S
= 1.5 nH
L
S
= 1.5 nH
L
S
= 1.5 nH
L
S
= 1.5 nH
L
S
= 1.5 nH
SC-70
o SMS3922-075
Marking: SA2
o SMS3923-075
Marking: SB2
o SMS3924-075
Marking: SC2
L
S
= 1.4 nH
o Available through distribution.
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
Surface Mount General Purpose Schottky Diodes
0
0.20
0.40
0.60
0.80
1.00
0
2
4
6
8
Reverse Voltage (V)
SMS3922 Total Capacitance vs.
Reverse Voltage
Capacitance (pF)
SMS3924 Total Capacitance vs.
Reverse Voltage
0
0.50
1.00
1.50
2.00
2.50
0
6
12
18
24
30
Reverse Voltage (V)
Capacitance (pF)
SMS3923 Total Capacitance vs.
Reverse Voltage
0
0.20
0.40
0.60
0.80
1.00
1.20
0
5
10
15
20
Reverse Voltage (V)
Capacitance (pF)
1
10
100
1000
10000
1
2
3
4
Reverse Voltage (V)
Reverse Current (nA)
155C
85C
25C
SMS3922 Reverse Current vs.
Reverse Voltage
Typical Performance Data
Electrical Specifications at 25C
Pair Configuration
Part Number
V
B
@ 10
A (V)
I
R
C
T
@ 0 V (pF)
V
F
@ 1 mA (mV) (b) V
F
@ 1 mA (mV)
V
F
Min.
Max.
Max.
SMS3922 Series
8
@ 1 V < 100 nA
0.631.03
280340
10
@ 10 mA < 450 mV
SMS3923 Series
20
@ 15 V < 500 nA
0.831.23
310370
10
@ 35 mA < 1000 mV
SMS3924 Series
70
@ 50 V < 200 nA
1.431.83
490550
10
@ 15 mA < 1000 mV
Surface Mount General Purpose Schottky Diodes
Alpha Industries, Inc. [781] 935-5150
Fax [617] 824-4579 Email sales@alphaind.com www.alphaind.com
3
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.
SC-79
SOT-143
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
1
2
0.110 (2.80 mm) MIN.
0.120 (3.04 mm) MAX.
0.083 (2.10 mm) MIN.
0.104 (2.64 mm) MAX.
0.012 (0.30 mm) MIN.
0.020 (0.50 mm) MAX.
0.0005 (0.01 mm) MIN.
0.004 (0.15 mm) MAX.
0.031 (0.80 mm) MIN.
0.047 (1.20 mm) MAX.
0.030 (0.76 mm) MIN.
0.035 (0.89 mm) MAX.
0.047 (1.20 mm) MIN.
0.055 (1.40 mm) MAX.
0.003 (0.08 mm) MIN.
0.008 (0.20 mm) MAX.
0.022 (0.55 mm) REF.
8 MAX.
0.020 (0.50 mm) REF.
0.028 (0.70 mm) REF.
0.068 (1.72 mm) REF.
0.076 (1.92 mm) REF.
4
3
2
1
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
2
1
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.
Parameter
Unit
SMS3922
SMS3923
SMS3924
IS
A
3E-8
5E-9
2E-11
R
S
9
11
11
N
1.08
1.05
1.08
TT
S
8E-11
8E-11
8E-11
C
J0
pF
0.7
0.9
1.5
M
0.26
0.24
0.4
E
G
eV
0.69
0.69
0.69
XTI
2
2
2
F
C
0.5
0.5
0.5
B
V
V
20
46
100
I
BV
A
1E-5
1E-5
1E-5
V
J
V
0.595
0.64
0.84
SPICE Model Parameters
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