Document
SA SERIES
Features
Transient Voltage Suppressor Diodes
Voltage Range 5.0 to 170 Volts 500 Watts Peak Power 1.0 Watt Steady State
DO-15
Plastic package has Underwriters Laboratory Flammability Classification 94V-0 500W surge capability at 10 X 10us waveform, duty cycle: 0.01% Excellent clamping capability Low zener impedance Fast response time: Typically less than 1.0ps from 0 volts to VBR for unidirectional and 5.0 ns for bidirectional Typical IR less than 1μA above 10V
High temperature soldering guaranteed: 260°C / 10 seconds / .375”,(9.5mm) lead length / 5lbs.,(2.3kg) tension
Mechanical Data
Case: Molded plastic Lead: Axial leads, solderable per MIL-STDLead: 202, Method 208 Polarity: Color band denotes cathode except bipolar Weight: 0.34 gram
Dimensions in inches and (millimeters)
Maximum Ratings and Electrical Characteristics
Rating at 25°C ambient temperature unless otherwise specified.
Type Number
Peak Power Dissipation at TA=25OC, Tp=1ms (Note 1)
Symbol PPK
Value Minimum 500
Units Watts
Steady State Power Dissipation at TL=75 °C Lead Lengths .375”, 9.5mm (Note 2)
PD
1.0 Watts
Peak Forward Surge Current, 8.3 ms Single Half Sine-wave Superimposed on Rated Load (JEDEC method) (Note 3)
Maximum Instantaneous Forward Voltage at 35.0A for Unidirectional Only
IFSM VF
70 Amps 3.5 Volts
Operating and Storage Temperature Range
TJ, TSTG
-55 to + 175
Notes: 1. Non-repetitive Current Pulse Per Fig. 3 and Derated above TA=25OC Per Fig. 2.
°C
Notes: 2. Mounted on Copper Pad Area of 1.6 x 1.6” (40 x 40 mm) Per Fig. 5.
Notes: 3. 8.3ms Single Half Sine-wave or Equivalent Square Wave, Duty Cycle=4 Pulses Per Minutes
Notes: 3. Maximum.
Devices for Bipolar Applications
Notes: 1. For Bidirectional Use C or CA Suffix for Types SA5.0 through Types SA170.
Notes: 2. Electrical Characteristics Apply in Both Directions.
- 632 -
PPPM, PEAK PULSE POWER, KW
PEAK PULSE CURRENT - %
RATINGS AND CHARACTERISTIC CURVES (SA SERIES)
FIG.1- PEAK PULSE POWER RATING CURVE
40
NON-REPETITIVE PULSE WAVEFORM SHOWN in FIG.3 10 TA=250C
FIG.2- PULSE DERATING CURVE
100
75
PEAK PULSE POWER (Ppp) or CURRENT (IPPM) DERATING IN PERCENTAGE, %
PPK 5O
IMPULSE EXPONENTIAL DECAY
ld
1
HALF SINE
PPK ld
0.1 0.1ms
ld=7lp PPK SQUARE
ld CURRENT WAVEFORM
1ms
10ms
100ms
tp, PULSE WIDTH, sec.
1,000ms
10,000ms
FIG.3- PULSE WAVEFORM
150
tr=10msec.
PULSE WIDTH (td) is DEFINED as the POINT WHERE the PEAK
CURRENT DECAYS
PEAK VALUE
to 50% of lPPM
100 lPPM
HALF VALUE- lPPM 2
10/1000msec. WAVEFORM as DEFINED by R.E.A. 50
50
25
0 0 25 50 75 100 125 150 175 200 TA, AMBIENT TEMPERATURE, oC
FIG.4- MAXIMUM NON-REPETITIVE FORWARD SURGE CURRENT UNIDIRECTIONAL ONLY
200
100
8.3ms Single Half Sine Wave JEDEC Method
lFSM, PEAK FORWARD SURGE CURRENT, AMPERES
td 0
0 1.0
2.0 3.0 4.0
t, TIME, ms
FIG.5- STEADY STATE POWER DERATING CURVE
1.6
1.4
1.2
L=0.375"(9.5mm) 1.0 LEAD LENGTHS
0.8
0.6
0.4 1.6 X 1.6 X .040" (40 X 40 X 1mm.)
0.2 COPPER HEAT SINKS
0
0
25 50.