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 I
R
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 T
L
=75
O
C (Note A) Derate above 75
O
Symbol
C
Value
1.5
10
-55 to +150
Units
Watts
Amps
O
P
D
I
F S M
T
J
, T
S 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.
STAD-FEB.10.2009
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PAGE . 1
1SMA5921-AU~1SMA5942-AU
Max. Reverse
Leakage Current
I
R
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
V
R
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
@ I
ZT
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
@ I
ZT
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
@ I
ZK
Mark i ng
Code
STAD-FEB.10.2009
1
PAGE . 2
1SMA5921-AU~1SMA5942-AU
qvz,
TEMPERATURE COEFICENT (mV/
O
C)
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
qvz,
TEMPERATURE COEFICENT (mV/
O
C)
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
STAD-FEB.10.2009
1
PAGE . 3
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
STAD-FEB.10.2009
1
PAGE . 4
1SMA5921-AU~1SMA5942-AU
MOUNTING PAD LAYOUT
ORDER INFORMATION
• Packing information
T/R - 7.5K per 13" plastic Reel
T/R - 1.8Kper 7” plastic Reel
STAD-FEB.10.2009
1
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5
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