PAGE . 1
STAD-FEB.10.2009
1
1SMB5921~1SMB5942
FEATURES
• For surface mounted applications in order to optimize board space.
• Low profile package
• Built-in strain relief
• Glass passivated junction
• 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
• In compliance with EU RoHS 2002/95/EC directives
MECHANICAL DATA
• 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)
• Sta ndard Packaging:12mm tape (EIA-481)
• Weight: 0.0032 ounce, 0.092 gram
SURF ACE MOUNT SILICON ZENER DIODE
MAXIMUM RA TINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25°C ambient temperature unless otherwise specified.
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.
VOLTAGE POWER
6.8 to 51 Volts 1.5 Watts
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PAGE . 2
STAD-FEB.10.2009
1
1SMB5921~1SMB5942
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Z
ZT
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ZT
Z
ZK
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ZK
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R
V
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Ω
ΩΩ Am ΩΩ
Ω
ΩΩ Am µµ
µ
µµAV
1295BMS1 8.6 64.6 41.7 3 1.55 002 1 5 2.5 B129
2295BMS1 5.7 31.7 88.7 3 05 004 5.0 5 6 B229
3295BMS1 2.8 97.7 16.8 4 7.54 004 5.0 5 5.6 B329
4295BMS1 1.9 56.8 65.9 4 2.14 005 5.0 5 7 B429
5295BMS1 01 5.9 5.01 5 5.73 005 52.0 5 8 B529
6295BMS1 11 54.01 55.11 6 1.43 055 52.0 1 4.8 B629
7295BMS1 21 4.11 6.21 7 2.13 055 52.0 1 1.9 B729
8295BMS1 31 53.21 56.31 7 8.82 055 52.0 1 9.9 B829
9295BMS1 51 52.41 57.51 9 52 006 52.0 1 4.11 B929
0395BMS1 61 2.51 8.61 01 4.32 006 52.0 1 2.21 B039
1395BMS1 81 1.71 9.81 21 8.02 056 52.0 1 7.31 B139
2395BMS1 02 91 12 41 7.81 056 52.0 1 2.51 B239
3395BMS1 22 9.02 1.32 81 71 056 52.0 1 7.61 B339
4395BMS1 42 8.22 2.52 91 6.51 007 52.0 1 2.81 B439
5395BMS1 72 56.52 53.82 32 9.31 007 52.0 1 6.02 B539
6395BMS1 03 5.82 5.13 62 5.21 057 52.0 1 8.22 B639
7395BMS1 33 53.13 56.43 33 4.11 008 52.0 1 1.52 B739
8395BMS1 63 2.43 8.73 83 4.01 058 52.0 1 4.72 B839
9395BMS1 93 50.73 59.04 54 6.9 009 52.0 1 7.92 B939
0495BMS1 34 58.04 51.54 35 7.8 059 52.0 1 7.23 B049
1495BMS1 74 56.44 53.94 76 8 0001 52.0 1 8.53 B149
2495BMS1 15 54.84 55.35 07 3.7 0011 52.0 1 8.83 B249
PAGE . 3
STAD-FEB.10.2009
1
1SMB5921~1SMB5942
100
200
100
70
50
30
20
10
10 20 30 50 70 200
VZ@IZT
Vz, ZENER VOLTAGE (VOLTS)
Fig.3 Zener Voltage - 14 to 200 Volts
VZ=150V
62V
22V
12V
6.8V
0.5 1 2 510 20 50 100 200 500
1K
500
200
100
50
20
10
5
2
1
TJ=25 C
IZ(rms) =0.1 I (dc)
O
Z
Iz, ZENER TEST CURRENT (mA)
Zz, DYNAMIC IMPEDANCE (OHMS) vz, TEMPERATURE COEFICENT (mV/ C)
O
vz, TEMPERATURE COEFICENT (mV/ C)
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MAXIMUM POWER DISSIPATION, Watts
Fig.4 Effect of Zener Current
0.1 0.20.3 0.5 12
3 5 10 2030 50 100
1K
500
300
200
100
50
30
20
10
RECTANGULAR
NONREPETITIVE
WAVEFORM
TJ=25 C PRIOR
O
TO INTIAL PULSE
Ppk, PEAKSURGE POWER (WATTS)
PW, PULSE WIDTH (ms)
Fig.6 Maximum Surge Power
200
100
70
50
30
20
10
7
5
3
25 7 10 20 3 400 6500 70 100
IZ(dc)=1mA
IZ(rms)=0.1IZ(dc)
10mA
20mA
Zz, DYNAMIC IMPEDANCE (OHMS)
Vz, ZENER VOLTAGE (VOLTS)
Fig.5 Effect of Zener Voltage
2.5
2
1.5
1
0.5
0
020 40 60 80 100 120 140 150 180
LEAD TEMPERATURE, C
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Fig.1 Steady State Power Derating
V , ZENER VOLTAGE (VOLTS)
Z
8
6
4
2
0
-2
-424
6810
10
12
VZ@IZT
Fig.2 Zener Voltage - to 12 volts
PAGE . 4
STAD-FEB.10.2009
1
1SMB5921~1SMB5942
012345678910
100
50
30
20
10
5
3
2
1
0.5
0.3
0.2
0.1
Iz, ZENER CURRENT (mA)
Vz, ZENER VOLTAGE (VOLTS)
Fig.7 Vz = 6.8 thru 10 Volts
100
50
30
20
10
5
3
2
1
0.5
0.3
0.2
0.10 102030405060708090100
Iz, ZENER CURRENT (mA)
Vz, ZENER VOLTAGE (VOLTS)
Fig.8Vz=12thru82Volts
NOTE 3. ZENER VOLTAGE (Vz) MEASUREMENT
Nominal zener voltage is measured with the device function in thermal equilibrium with ambient
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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PAGE . 5
MOUNTING P AD LA YOUT
• Packing information
T/R - 3K per 13" plastic Reel
T/R - 0.5Kper 7” plastic Reel
ORDER INFORMA TION
LEGAL ST ATEMENT
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.
1SMB5921~1SMB5942
STAD-FEB.10.2009
1
