LITE-ON
SEMICONDUCTOR
SMBZ SERIES
STAND-OFF VOLTAGE-
27
to
39
Volts
POWER DISSIPATION -
5.0
WATTS
SURFACE MOUNT ZENER DIODE
FEATURES
5.0 W Power Dissipation
27V~39V Nnminal Zener Voltage Range
Reliable low cost construction utilizing molded plastic
technique
Plastic material has UL flammability classification
94V-O
Standard Vz Tolerance is +-5%
B
SMB
SMB
A
DIM.
A
B
C
MIN.
4.06
3.30
1.96
0.15
5.21
0.05
2.01
0.76
MAX.
4.57
3.94
2.21
0.31
5.59
0.20
2.62
1.52
C
D
E
F
MECHANICAL DATA
Case : Molded plastic
Polarity : Cathode band
Weight : 0.003 ounces, 0.093 gram
G
H
E
F
D
G
H
All Dimensions in millimeter
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25
℃
ambient temperature unless otherwise specified.
CHARACTERISTICS
SYMBOLS
VALUE
UNIT
Zener Current (see page3)
I
ZM
Pd / Vz
mA
Forward Voltage @ I
F
= 200 mA
V
F
1.2
Volts
Max. Steady State Power Dissipation @T
L
=100
℃
.
P
d
5.0
W
Typical Thermal Resistnace (Note1)
R
thjL
R
thja
8.0
15
C/W
Operating Temperature Range
T
J
-55 to +150
C
Storage Temperature Range
T
STG
-55 to +150
C
REV. 1, Oct-2010, KSJA01
NOTE : 1. Thermal Resistance Junction to Lead/ Ambient.
RATING AND CHARACTERISTIC CURVES
SMBZ SERIES
FIG.1 - MAXIMUM CONTINUOUS POWER DISSIPATION
PM (AV) AVERAGE POWER DISSIPATION (W)
FIG.2 - TYPICAL ZENER IMPEDANCE
Zz, DYNAMIC ZENER IMPEDANCE (Ohm)
100
5.0
3.75
2.5
10
1.25
Rthj-L= 8.0
℃
/W
RESISTIVE OR INDUCTIVE LOAD
Vz= 39 V
Vz= 27 V
Vz= 30 V
0
25
50
75
100
125
150
175
1
1
10
100
LEAD TEMPERATURE (
℃
)
Izt, ZENER TEST CURRENT (mA)
FIG.3 - TYPICAL TEMPERATURE COEFFICIENTS
100
FIG.4 - TYPICAL FORWARD CHARACTERISTICS
INSTANTANEOUS FORWARD CURRENT ,(A)
Vz TEMPERATURE COEFFICIENT (mV/
℃
)
50
40
10
30
20
1
10
T
J
= 25 C
PULSE WIDTH 300us
2% Duty cycle
0
0
5
10
15
20
25
30
35
40
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
Vz, ZENER VOLTAGE (V)
INSTANTANEOUS FORWARD VOLTAGE , VOLTS
FIG.5 - Reverse Leakage Current versus TJ
10.0
IR / IR (25
℃
)
1.0
0.1
0
30
60
90
120
150
Junction Temperature (
℃
)
LITE-ON
SEMICONDUCTOR
Electrical Characteristics
Type
Number
Marking
Code
@T
A
= 25°C unless otherwise noted
Test
Current
I
ZT
mA
50
40
40
30
30
Maximum Zener Impedance
Z
ZT
@ I
ZT
Z
ZK @
I
ZK
Maximum Reverse
Current
I
R
@V
R
A
0.5
0.5
0.5
0.5
0.5
V
20.6
22.8
25.1
27.4
29.7
I
ZM
Max
(Note 2)
mA
176
158
144
132
122
Zener Voltage Range
(Note 1)
V
Z
@I
ZT
Nom (V) Min (V) Max (V)
Ω
5.0
8.0
10.0
11.0
14.0
Ω
120
140
150
160
170
mA
1
1
1
1
1
SMBZ27
SMBZ30
SMBZ33
SMBZ36
SMBZ39
ZMG
ZMK
ZMM
ZMP
ZMR
27
30
33
36
39
25.65
28.5
31.35
34.2
37.05
28.35
31.5
34.65
37.8
40.95
Note:
1) Device listed above have +-5% tolerance
2) The actual Izm for any device may not exceed the value of 5 watts divided by the actual Vz of the
device. T
L
=100℃ at 1mm maximum from the device body.
Legal Disclaimer Notice
SMBZ SERIES
Important Notice and Disclaimer
LSC reserves the right to make changes to this document and its products and
specifications at any time without notice. Customers should obtain and confirm
the latest product information and specifications before final design, purchase or
use.
LSC makes no warranty, representation or guarantee regarding the suitability of
its products for any particular purpose, nor does LSC assume any liability for
application assistance or customer product design. LSC does not warrant or
accept any liability with products which are purchased or used for any
unintended or unauthorized application.
No license is granted by implication or otherwise under any intellectual property
rights of LSC.
LSC products are not authorized for use as critical components in life support
devices or systems without express written approval of LSC.
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