1SMB5921~1SMB5942
SURFACE MOUNT SILICON ZENER DIODE
VOLTAGE
FEATURES
• For surface mounted applications in order to optimize board space.
• Low profile package
• Built-in strain relief
• Glass passivated junction
• 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
• In compliance with EU RoHS 2002/95/EC directives
6.8 to 51 Volts
POWER
1.5 Watts
MECHANICALDATA
• Case: JEDEC DO-214AA,Molded plastic over passivated junction.
• Terminals: Solder plated,solderable per MIL-STD-750, Method 2026
• Polarity: Color band denotes positive end (cathode)
• Standard Packaging:12mm tape (EIA-481)
• Weight: 0.0032 ounce, 0.092 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
1
PAGE . 1
1SMB5921~1SMB5942
Nominal Zener Voltage
Part Number
Nom V
1SMB5921
1SMB5922
1SMB5923
1SMB5924
1SMB5925
1SMB5926
1SMB5927
1SMB5928
1SMB5929
1SMB5930
1SMB5931
1SMB5932
1SMB5933
1SMB5934
1SMB5935
1SMB5936
1SMB5937
1SMB5938
1SMB5939
1SMB5940
1SMB5941
1SMB5942
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
Min V
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
M a x i m u m Ze n e r I m p e d a n c 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
mA
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
Max. Reverse
Leakage Current
I
R
µ
A
5
5
5
5
5
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
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
Ma rk in g
Code
921B
922B
923B
924B
925B
926B
927B
928B
929B
930B
931B
932B
933B
934B
935B
936B
937B
938B
939B
940B
941B
942B
STAD-FEB.10.2009
1
PAGE . 2
1SMB5921~1SMB5942
q
vz, 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,
O
C
V , ZENER VOLTAGE (VOLTS)
Z
Fig.1 Steady State Power Derating
Fig.2 Zener Voltage - to 12 volts
q
vz, 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
1SMB5921~1SMB5942
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
temperature at 25
O
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
1SMB5921~1SMB5942
MOUNTING PAD LAYOUT
ORDER INFORMATION
• Packing information
T/R - 3K per 13" plastic Reel
T/R - 0.5Kper 7” plastic Reel
LEGAL STATEMENT
Copyright PanJit International, Inc 2009
The information presented in this document is believed to be accurate and reliable. The specifications and information herein
are subject to change without notice. Pan Jit makes no warranty, representation or guarantee regarding the suitability of its
products for any particular purpose. Pan Jit products are not authorized for use in life support devices or systems. Pan Jit
does not convey any license under its patent rights or rights of others.
STAD-FEB.10.2009
1
PAGE . 5
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