MMSZ5221BPT
THRU
CHENMKO ENTERPRISE CO.,LTD
SURFACE MOUNT ZENER
SILICON PLANAR POWER ZENER DIODES
VOLTAGE RANGE 2.4V TO 91V
MMSZ5270BPT
FEATURE
* Small surface mounting type. (SC-79/SOD-523)
* High temperature soldering type.
* ESD rating of class 3(>16 kV) per human body model.
* Silicon planar zener diodes.
SC-79/SOD-523
* Silcon-oxide passivated junction.
* Low temperature coefficient voltage
* 500 mW Rating on FR-4 or FR-5 Board
Cathode
(1)
(2)
0.75~0.85
0.25~0.35
MECHANICAL
* SC-79/SOD-523 Packaging.
* Cathode indicated by polarity band.
* Mounting position: Any.
1.1~1.3
0.5~0.77
0.07~0.17
1.5~1.7
(2)
CIRCUIT
SC-79/SOD-523
Dimensions in millimeters
(1)
MAXIMUM RATINGES ( At TA = 25oC unless otherwise noted )
RATINGS
SYMBOL
VALUE
UNITS
-
Zener Current ( see Table "Characteristics" )
-
-
o
Max. Steady State Power Dissipation @TA=25 C
PD
225
mW
oC
-65 to +150
-65 to +150
Max. Operating Temperature Range
Storage Temperature Range
TJ
TSTG
oC
ELECTRICAL CHARACTERISTICS ( At TA = 25oC unless otherwise noted )
CHARACTERISTICS
Thermal Resistance Junction to Ambient
Max. Instantaneous Forward Voltage at IF= 10mA
SYMBOL
MIN.
TYP.
MAX.
556
UNITS
oC/W
R
JA
-
-
-
-
VF
0.9
Volts
2002-10
NOTES : 1. The JEDEC type numbers listd have a standaerd tolerance on the normal zener voltage of +10%, Suffix B=+5%.
2. The zener impedance is derived from 1KHz AC voltage, which results when an AC current having an RMS value equal to 10%
of DC zener current (IZT or IZK) is superimposed on IZT or IZK. Zener impedance is measured at two points to insure a sharp knee
on the breakdown curve to eliminate unstable units.
3. Valid provided that electrodes at distance of 10mm from case are kept ambient temperature.
4. Measured under thermal equilibrium and DC test conditions.
5. The rating listd in the electrical characteristics table is maximum peak, non-repetitive, reverse surge current of 1/2 square wave
or equivalent sine wave pulse of 1/120 second duration superimposed on the test current, IZT, per JEDEC registration.