1SMA5921~1SMA5945
SURFACE MOUNT SILICON ZENERDIODE
VOLTAGE
FEATURES
• For surface mounted applications in order to optimize board space
• Glass passivated junction
• Low inductance
• Typical I
R
less than 1µA above 12V
• Plastic package has Underwriters Laboratory Flammability
Classification 94V-O
• High temperature soldering : 260°C /10 seconds at terminals
• Lead free in compliance with EU RoHS 2.0
• Green molding compound as per IEC 61249 standard
6.8 to
68
Volt
POWER
1.5 Watt
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 ounces, 0.0679 grams
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25°C ambient temperature unless otherwise specified.
Parameter
Pwak Pulse Power Dissipation on T
L
=75
O
C (Notes A)
Derate above 75
O
C
Peak Forward Surge Current 8.3ms single half sine-wave
superimposed on rated load (Notes B)
Operating Junction and Storage Temperature Range
Symbol
Value
1.5
20
10
-55 to + 150
Units
W atts
mW/
O
C
Amps
O
P
D
I
FSM
T
J
,T
STG
C
NOTES :
A.Mounted on 5mm
2
(0.013mm thick) land areas.
B.Measured on 8.3ms, and single half sine-wave or equivalent square wave ,duty cycle=4 pulses per minute maximum.
October 16,2018-REV.05
PAGE . 1
1SMA5921~1SMA5945
Nominal Zener Voltage
Part Number
Nom V
1SMA5921
1SMA5922
1SMA5923
1SMA5924
1SMA5925
1SMA5926
1SMA5927
1SMA5928
1SMA5929
1SMA5930
1SMA5931
1SMA5932
1SMA5933
1SMA5934
1SMA5935
1SMA5936
1SMA5937
1SMA5938
1SMA5939
1SMA5940
1SMA5941
1SMA5942
1SMA5943
1SMA5944
1SMA5945
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
56
62
68
V
Z
@ I
ZT
M inV
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
53.2
58.9
64.6
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
58.8
65.1
71.4
Ω
3
3
4
4
5
6
7
7
9
10
12
14
18
19
23
26
33
38
45
53
67
70
86
100
120
M a ximum Ze ner I mpedanc e
Z
ZT
@ I
ZT
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
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
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
42.6
47.1
51.7
mA
Z
ZK
@ I
ZK
Ω
200
400
400
500
500
550
550
550
600
600
650
650
650
700
700
750
800
850
900
950
1000
1100
1300
1500
1700
Ma rk ing
Co d e
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
6.7
6
5.5
921A
922A
923A
924A
925A
926A
927A
928A
929A
930A
931A
932A
933A
934A
935A
936A
937A
938A
939A
940A
941A
942A
943A
944A
945A
October 16,2018-REV.05
PAGE . 2
1SMA5921~1SMA5945
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
October 16,2018-REV.05
PAGE . 3
1SMA5921~1SMA5945
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
October 16,2018-REV.05
PAGE . 4
1SMA5921~1SMA5945
MOUNTING PAD LAYOUT
ORDER INFORMATION
• Packing information
T/R - 7.5K per 13" plastic Reel
T/R - 1.8K per 7" plastic Reel
October 16,2018-REV.05
PAGE . 5
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