Document
1SMA5921-AU~1SMA5942-AU
SURFACE MOUNT SILICON ZENER DIODE VOLTAGE
FEATURES
• For surface mounted applications in order to optimize board space • Low profile package • Built-in strain relief • Low inductance • Typical IR less than 1.0µA above 12V • Plastic package has Underwriters Laboratory Flammability Classification 94V-O • High temperature soldering : 260°C /10 seconds at terminals • Acqire quality system certificate : TS16949 • AEC-Q101 qualified • Lead free in comply with EU RoHS 2002/95/EC directives
0.060(1.52) 0.030(0.76) 0.008(0.203) 0.002(0.051) 0.208(5.28) 0.188(4.80) 0.062(1.60) 0.047(1.20) 0.114(2.90) 0.098(2.50) 0.181(4.60) 0.157(4.00) 0 . 012(0 . 305) 0 . 006(0.152)
6.8 to 51 Volts
POWER
1.5 Watts
• Glass passivated junction
MECHANICAL DATA
• Case: JEDEC DO-214AC, Molded plastic over passivated junction • Terminals: Solder plated, solderable per MIL-STD-750, Method 2026 • Polarity: Color band denotes cathode end • Standard Packaging: 12mm tape (EIA-481) • Weight: 0.0023 ounce, 0.0679 gram
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25°C ambient temperature unless otherwise specified.
Parameter Peak Pulse Power Dissipation on TL=75 O C (Note A) Derate above 75
O
Symbol C
Value 1.5 10 -55 to +150
Units Watts Amps
O
PD IF S M TJ , TS T G
Peak Forward Surge Current 8.3ms single half sine-wave superimposed on rated load (JEDEC method) Operating Junction and StorageTemperature Range
C
NOTES: A.Mounted on 5.0mm2 (.013mm thick) land areas. B.Measured on 8.3ms, and single half sine-wave or equivalent square wave ,duty cycle=4 pulses per minute maximum.
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1SMA5921-AU~1SMA5942-AU
Max. Reverse Leakage Current IR μA 5 5 5 5 5 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0.5 0.5 0.5 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 VR V 5.2 6 6.5 7 8 8.4 9.1 9.9 11.4 12.2 13.7 15.2 16.7 18.2 20.6 22.8 25.1 27.4 29.7 32.7 35.8 38.8 921A 922A 923A 924A 925A 926A 927A 928A 929A 930A 931A 932A 933A 934A 935A 936A 937A 938A 939A 940A 941A 942A mA
Nominal Zener Voltage Part Number Nom V 1SMA5921-AU 1SMA5922-AU 1SMA5923-AU 1SMA5924-AU 1SMA5925-AU 1SMA5926-AU 1SMA5927-AU 1SMA5928-AU 1SMA5929-AU 1SMA5930-AU 1SMA5931-AU 1SMA5932-AU 1SMA5933-AU 1SMA5934-AU 1SMA5935-AU 1SMA5936-AU 1SMA5937-AU 1SMA5938-AU 1SMA5939-AU 1SMA5940-AU 1SMA5941-AU 1SMA5942-AU 6.8 7.5 8.2 9.1 10 11 12 13 15 16 18 20 22 24 27 30 33 36 39 43 47 51 V Z @ IZT Mi nV 6.46 7.13 7.79 8.65 9.5 10.45 11.4 12.35 14.25 15.2 17.1 19 20.9 22.8 25.65 28.5 31.35 34.2 37.05 40.85 44.65 48.45 Ma x V 7.14 7.88 8.61 9.56 10.5 11.55 12.6 13.65 15.75 16.8 18.9 21 23.1 25.2 28.35 31.5 34.65 37.8 40.95 45.15 49.35 53.55 Ω 3 3 4 4 5 6 7 7 9 10 12 14 18 19 23 26 33 38 45 53 67 70
Ma xi mum Ze ne r Imp e d anc e Z ZT @ IZT mA 55.1 50 45.7 41.2 37.5 34.1 31.2 28.8 25 23.4 20.8 18.7 17 15.6 13.9 12.5 11.4 10.4 9.6 8.7 8 7.3 Ω 200 400 400 500 500 550 550 550 600 600 650 650 650 700 700 750 800 850 900 950 1000 1100 Z ZK @ IZK
Mark i ng Code
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1SMA5921-AU~1SMA5942-AU
q vz, TEMPERATURE COEFICENT (mV/ OC)
MAXIMUM POWER DISSIPATION, Watts
2.5 2 1.5 1 0.5 0
10 8 6 4 2 0 -2 -4 2 4 6 8 10 12
V @I Z ZT
0
20
40
60
80
100
120 140 150 180
LEAD TEMPERATURE, C
O
V , ZENER VOLTAGE (VOLTS) Z
Fig.1 Steady State Power Derating
Fig.2 Zener Voltage - to 12 volts
q vz, TEMPERATURE COEFICENT (mV/ OC)
200 100 70 50 30 20 10 10 20 30 50 70 100 200
V @I Z ZT
Zz, DYNAMIC IMPEDANCE (OHMS)
1K 500 200 100 50 20 10 5 2 1 0.5 1 2 5 10 20
VZ=150V
T = 25 O C J I (rms) =0.1 I (dc) Z Z
62V
22V 12V 6.8V
50
100 200
500
Vz, ZENER VOLTAGE (VOLTS)
Iz, ZENER TEST CURRENT (mA)
Fig.3 Zener Voltage - 14 to 200 Volts
Fig.4 Effect of Zener Current
1K 200 100 70 50 30 20
10mA I Z (dc)=1mA
Ppk, PEAKSURGE POWER (WATTS)
Zz, DYNAMIC IMPEDANCE (OHMS)
500 300 200 100 50 30 20 10 0.1 0.20.3 0.5
RECTANGULAR NONREPETITIVE WAVEFORM O T J =25 C PRIOR TO INTIAL PULSE
10 7 5 3 2
20mA I Z (rms)=0.1I Z (dc)
5
7
10
20 3 0
40
50 60
70
100
1
2 3
5
10 20 30 50
100
Vz, ZENER VOLTAGE (VOLTS)
PW, PULSE WIDTH (ms)
Fig.5 Effect of Zener Voltage
Fig.6 Maximum Surge Power
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1SMA5921-AU~1SMA5942-AU
100
Iz, ZENER CURRENT (mA)
100
Iz, ZENER CURRENT (mA)
50 30 20 10 5 3 2 1 0.5 0.3 0.2 0.1 0 1 2 3 4 5 6 7 8 9 10
50 30 20 10 5 3 2 1 0.5 0.3 0.2 0.1 0 10 20 30 40 50 60 70 80 90 100
Vz, ZENER VOLTAGE (VOLTS)
Vz, ZENER VOLTAGE (VOLTS)
Fig.7 Vz = 6.8 thru 10 Volts
Fig.8 Vz = 12 thru 82 Volts
NOTE 3. ZENER VOLTAGE (Vz) MEASUREMENT Nominal zener voltage is measured with the device function in thermal equilibrium with ambient O temperature at 25 C NOTE 4. ZENER IMPEDANCE (Zz) DERIVATION Zzt and Zzk are measured by dividing the ac voltage drop across the device by the accurrent applied. The specified limits are for Iz(ac) = 0.1 Iz, (dc) with the ac freqency = 60Hz
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1SMA5921-AU~1SMA5942-AU
MOUNTING PAD LAYOUT
ORDER INFO.