8700 E. Thomas Road
Scottsdale, AZ 85252
Tel: (480) 941-6300
Fax: (480) 947-1503
SMBG5333B thru SMBG5388B
and
SMBJ5333B thru SMBJ5388B
Features
•
•
•
•
•
Low profile package for surface mounting (flat handling
surface for accurate placement)
Zener Voltage 3.3V to 200V
High Surge Current Capability
For available tolerances – see note 1
Available on Tape and Reel (see EIA std RS-481)
5 Watt
Surface Mount
Silicon
Zener Diodes
Mechanical Data
•
•
•
•
Standard JEDEC outlines as shown
Terminals gull-wing or c-bend (modified J-bend) tin-lead plated
and solderable per MIL-STD-750, method 2026
Polarity is indicated by cathode band
o
Maximum temperature for soldering: 260 C for 10 seconds.
Maximum Ratings @ 25
o
C Unless Otherwise Specified
Forward Voltage at 1.0A
Current
Steady State Power
Dissipation
Operating and Storage
Temperatures
Thermal Resistance
V
F
1.2 Volts
P
(AV)
5 Watts
See note 2
-65
o
C to
o
+ 150 C
25
o
C/W
T
J
, T
STG
R
θJL
Notes
1.
2.
Mounted on copper pads as shown below.
Lead temperature at 25
o
C = T
L
at mounting plane. Derate
o
o
linearly above 25 C to zero power at 150 C
Pad Layout
Gull Wing
0.150
Modified J-Bend
0.089
0.085
Datasheet# MSC0302A
Date: 06/26/97
SMB(G or J)5333B thru SMB(G or J)5333B
Note 1
Devices listed have a
±
5% tolerance on nominal V
Z.
The suffix A denotes a
±
20% tolerance, suffix C
denotes
±
2%, and suffix D denotes
±
1%.
Nominal Zener Voltage (V
Z
) is read with the device in
standard test clips with 3/8 to ½ inch spacing between
clip and case of the diode. Before reading, the diode is
allowed so stabilize for a period of 40
±
10 milliseconds
at 25°C (+8, -2°C).
The Zener impedance (Z
ZT
or Z
ZK
is derived from the 60
H
Z
ac voltage, which results when an ac current having
a rms value equal to 10% of the dc zener current (I
ZT
or
I
ZK
) is superimposed on I
ZT
or I
ZK
respectively. Dynamic
impedance variations with other current values are
described in Micronote 202.
The Maximum Reverse (leakage) Current is specified
for devices with
±
20% and
±
10% voltage tolerances
on nominal V
Z
in another column.
Note 5
The Maximum Zener Current (I
ZM
) shown is for
±
5%
tolerance devices. I
ZM
for
±
10% and
±
20% devices
can be calculated using the formula:
I
ZM
=
P
V
ZM
Note 2
Where “V
ZM
” is V
Z
at the high end of the voltage
tolerance specified and “P” is the rated power of the
device.
Note 3
Note 6
The Surge Current (I
ZM
) is specified as the maximum
peak of a nonrecurring sine wave of 8.3 milliseconds
duration.
Voltage Regulation (
∆V
Z
) is the difference between the
voltage measured at 10% and 50% I
ZM
).
Note 7
Note 4
5335B
5338B
5342B
5344B
5350B
5357B
5365B
5378B
5388B
1
S
嵌入式系统
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