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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 (VR) Forward Current - Steady State (IF) Forward Current - 1 mS Pulse (IF) Power Dissipation (PD) Storage Temperature (TST) Operating Temperature (TOP) Junction Temperature (TJ) Soldering Temperature ESD Human Body Model Value Rated VB 50 mA 1A 75 mW -65C to +150C -65C to +150C 150C 260C for 5 Seconds Class 1B
Single SC-79 o SMS3922-079 Cathode Mark o SMS3923-079 Cathode Mark o SMS3924-079 Cathode Mark LS = 0.7 nH
Single SOD-323 o SMS3922-011 Cathode Mark o SMS3923-011 Cathode Mark o SMS3924-011 Cathode Mark LS = 1.5 nH
Single SOT-23 o SMS3922-001 Marking: SA1 o SMS3923-001 Marking: SB1 o SMS3924-001 Marking: SC1 LS = 1.5 nH
Common Cathode SOT-23 o SMS3922-004 Marking: SA3 o SMS3923-004 Marking: SB3 o SMS3924-004 Marking: SC3 LS = 1.5 nH
Series Pair SOT-23 o SMS3922-005 Marking: SA2 o SMS3923-005 Marking: SB2 o SMS3924-005 Marking: SC2 LS = 1.5 nH SC-70 o SMS3922-075 Marking: SA2 o SMS3923-075 Marking: SB2 o SMS3924-075 Marking: SC2 LS = 1.4 nH
Unconnected Pair SOT-143 o SMS3922-015 Marking: SA7 o SMS3923-015 Marking: SB7 o SMS3924-015 Marking: SC7 LS = 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 25C
Part Number SMS3922 Series SMS3923 Series SMS3924 Series VB @ 10 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 IR CT @ 0 V (pF) Pair Configuration VF @ 1 mA (mV) (b) VF @ 1 mA (mV) Max. 280-340 310-370 490-550 10 10 10 VF 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 RS N TT CJ0 M EG XTI FC BV IBV VJ V A V eV S pF Unit A 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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