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.
Absolute Maximum Ratings
Characteristic
Reverse Voltage (V
R
)
Forward Current - Steady State (I
F
)
Forward Current - 1 mS Pulse (I
F
)
Power Dissipation (P
D
)
Storage Temperature (T
ST
)
Operating Temperature (T
OP
)
Junction Temperature (T
J
)
Soldering Temperature
ESD Human Body Model
Value
Rated V
B
50 mA
1A
75 mW
-65°C to +150°C
-65°C to +150°C
150°C
260°C for 5 Seconds
Class 1B
Single
SC-79
o
SMS3922-079
Cathode Mark
o
SMS3923-079
Cathode Mark
o
SMS3924-079
Cathode Mark
L
S
= 0.7 nH
Single
SOD-323
o
SMS3922-011
Cathode Mark
o
SMS3923-011
Cathode Mark
o
SMS3924-011
Cathode Mark
L
S
= 1.5 nH
Single
SOT-23
o
SMS3922-001
Marking: SA1
o
SMS3923-001
Marking: SB1
o
SMS3924-001
Marking: SC1
L
S
= 1.5 nH
Common Cathode
SOT-23
o
SMS3922-004
Marking: SA3
o
SMS3923-004
Marking: SB3
o
SMS3924-004
Marking: SC3
L
S
= 1.5 nH
Series Pair
SOT-23
o
SMS3922-005
Marking: SA2
o
SMS3923-005
Marking: SB2
o
SMS3924-005
Marking: SC2
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
Unconnected Pair
SOT-143
o
SMS3922-015
Marking: SA7
o
SMS3923-015
Marking: SB7
o
SMS3924-015
Marking: SC7
L
S
= 1.5 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. 1/00A
1
Surface Mount General Purpose Schottky Diodes
Electrical Specifications at 25°C
Part Number
SMS3922 Series
SMS3923 Series
SMS3924 Series
V
B
@ 10
µ
A (V)
Min.
8
20
70
@ 1 V < 100 nA
@ 15 V < 500 nA
@ 50 V < 200 nA
0.63–1.03
0.83–1.23
1.43–1.83
280–340
310–370
490–550
I
R
C
T
@ 0 V (pF)
Pair Configuration
V
F
@ 1 mA (mV) (b) V
F
@ 1 mA (mV)
Max.
10
10
10
V
F
Max.
@ 10 mA < 450 mV
@ 35 mA < 1000 mV
@ 15 mA < 1000 mV
Typical Performance Data
1.00
1.20
1.00
Capacitance (pF)
0.80
Capacitance (pF)
0
2
4
6
8
0.60
0.40
0.20
0
0.80
0.60
0.40
0.20
0
0
5
10
15
20
Reverse Voltage (V)
Reverse Voltage (V)
SMS3922 Total Capacitance vs.
Reverse Voltage
2.50
2.00
10000
SMS3923 Total Capacitance vs.
Reverse Voltage
Reverse Current (nA)
155C
1000
85C
100
25C
10
Capacitance (pF)
1.50
1.00
0.50
0
0
6
12
18
24
30
1
1
2
3
4
Reverse Voltage (V)
Reverse Voltage (V)
SMS3924 Total Capacitance vs.
Reverse Voltage
SMS3922 Reverse Current vs.
Reverse Voltage
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
SPICE Model Parameters
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
SMS3922
3E-8
9
1.08
8E-11
0.7
0.26
0.69
2
0.5
20
1E-5
0.595
SMS3923
5E-9
11
1.05
8E-11
0.9
0.24
0.69
2
0.5
46
1E-5
0.64
SMS3924
2E-11
11
1.08
8E-11
1.5
0.4
0.69
2
0.5
100
1E-5
0.84
SOT-23
0.110 (2.80 mm) MIN.
0.120 (3.04 mm) MAX.
3
0.012 (0.30 mm) MIN.
0.020 (0.50 mm) MAX.
0.047 (1.20 mm) MIN.
0.055 (1.40 mm) MAX.
1
2
0.083 (2.10 mm) MIN.
0.104 (2.64 mm) MAX.
0.037 (0.95 mm) REF.
0.020 (0.51 mm) REF.
0.076 (1.92 mm) REF.
0.003 (0.080 mm) MIN.
0.008 (0.20 mm) MAX.
8˚ MAX.
0.035 (0.89 mm) MIN.
0.044 (1.12 mm) MAX.
0.022 (0.55 mm) REF.
0.0005 (0.01 mm) MIN.
0.004 (0.10 mm) MAX.
SC-70
0.071 (1.80 mm) MIN.
0.087 (2.20 mm) MAX.
0.010 (0.25 mm) MIN.
0.016 (0.40 mm) MAX.
0.071 (1.80 mm) MIN.
0.094 (2.40 mm) MAX.
SOD-323
0.090 (2.30 mm) MIN.
0.108 (2.74 mm) MAX.
0.010
(0.25 mm) MIN.
0.016
(0.40 mm) MAX.
0.063 (1.60 mm) MIN.
0.071 (1.80 mm) MAX.
3
0.045 (1.15 mm) MIN.
0.053 (1.35 mm) MAX.
0.045 (1.15 mm) MIN.
0.053 (1.35 mm) MAX.
1
2
1
0.014 (0.35 mm) REF.
2
0.026 (0.65 mm) REF.
CATHODE
INDICATOR
0.051 (1.30 mm) REF.
0.004 (0.10 mm) MIN.
0.007 (0.18 mm) MAX.
0.031 (0.80 mm) MIN.
0.039 (1.00 mm) MAX.
0.006
(0.15 mm) TYP.
0.008 (0.20 mm) NOM.
0.050
(1.25 mm) MAX.
0.004 (0.10 mm) MAX.
0.004 (0.10 mm) MIN.
0.012 (0.30 mm) MAX.
0.000 (0.00 mm) MIN.
0.004 (0.10 mm) MAX.
0.010 (0.25 mm) MIN.
SC-79
CATHODE 0.006 (0.15 mm) MIN.
INDICATOR
0.010
(0.25 mm) MIN.
0.014
(0.35 mm) MAX.
1
2
SOT-143
0.110 (2.80 mm) MIN.
0.120 (3.04 mm) MAX.
0.020 (0.50 mm) REF.
4
0.083 (2.10 mm) MIN.
0.104 (2.64 mm) MAX.
1
0.068 (1.72 mm) REF.
0.028 (0.70 mm) REF.
0.030 (0.76 mm) MIN.
0.035 (0.89 mm) MAX.
0.012 (0.30 mm) MIN.
0.020 (0.50 mm) MAX.
2
3
0.076 (1.92 mm) REF.
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.
10˚ MAX.
0.003
(0.07 mm) MIN.
0.008
(0.20 mm) MAX.
0.047 (1.20 mm) MIN.
0.055 (1.40 mm) MAX.
8˚ MAX.
0.003 (0.08 mm) MIN.
0.008 (0.20 mm) MAX.
0.031 (0.80 mm) MIN.
0.047 (1.20 mm) MAX.
0.022 (0.55 mm) REF.
0.0005 (0.01 mm) MIN.
0.004 (0.15 mm) MAX.
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
3
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