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SA70A View Datasheet(PDF) - General Semiconductor

Part NameDescriptionManufacturer
SA70A TRANSZORB™ TRANSIENT VOLTAGE SUPPRESSOR General
General Semiconductor 
SA70A Datasheet PDF : 6 Pages
1 2 3 4 5 6
RATINGS AND CHARACTERISTIC CURVES SA5.0 THRU SA170CA
FIG. 1 - PEAK PULSE POWER RATING CURVE
30
NON-REPETITIVE
10
PULSE WAVEFORM
SHOWN in FIG. 3
TA=25°C
FIG. 2 - PULSE DERATING CURVE
100
75
1.0
PPK”.5”
td
IMPULSE
EXPONENTIAL
DECAY
PPK
HALF SINE
td
td = 7tp
SQUARE
PPK
0.1
0.1µs
td
CURRENT WAVEFORMS
1µs
10µs
100µs
td, PULSE WIDTH, sec.
1,000µs 10,000µs
50
25
0
0 25 50 75 100 125 150 175 200
TA, AMBIENT TEMPERATURE, °C
150
100
50
FIG. 3 - PULSE WAVEFORM
tr=10µsec.
PULSE WIDTH (td) is DEFINED
as the POINT WHERE the PEAK
CURRENT DECAYS to 50% of IPP
PEAK VALUE
IPPM
HALF VALUE - IPP
2
10/1000µsec. WAVEFORM
as DEFINED by R.E.A.
td
0
0
1.0
2.0
3.0
4.0
t, TIME, ms
FIG. 4 - MAXIMUM NON-REPETITIVE PEAK FORWARD
SURGE CURRENT UNIDIRECTIONAL ONLY
200
100
8.3ms SINGLE HALF SINE-WAVE
(JEDEC Method)
10
1
10
100
NUMBER OF CYCLES AT 60 Hz
FIG. 5 - STEADY STATE POWER DERATING
CURVE
4.0
3.5
3.0
2.5
2.0
1.5
L =0.375”(9.5mm)
LEAD LENGTHS
1.0
0.5
1.6 x 1.6 x 0.040” (40 x 40 x 1mm)
COPPER HEAT SINKS
0
0 25 50 75 100
125
150
175
200
TL, LEAD TEMPERATURE,°C
10,000
1,000
FIG. 6 - CAPACITANCE
UNIDIRECTIONAL
BIDIRECTIONAL
VR = 0
100
10
5
VR = RATED
STAND-OFF VOLTAGE
100
REVERSE VOLTAGE, VOLTS
500
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