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SMAJ Series
Features:
• For surface mounted application
• Low prole package
• Built-in strain relief
• Glass passivated junction
• Excellent clamping capability
• Fast response time : typically less than 1.0ps from 0 volt to BV minimum
• Typical Ir less than 1μA above 10V
• High temperature soldering guaranteed : 260°C/10 seconds at terminals.
• Plastic material
• 400 watts peak pulse power capability with a 10 × 1000μs waveform
by 0.01% duty cycle (300W above 78V)
Mechanical Data
Case : Moulded plastic
Terminals : Pure tin plated lead free
Polarity : Cathode band marking on device for Uni-Directional parts (‘A’), blank for Bi-Directional (‘CA’)
Standard Packaging : 12mm tape (EIA STD RS-481)
Weight : 0.064 gram
Max. Ratings and Electrical Characteristics
Rating at 25°C ambient temperature unless otherwise specied.
Type Number Symbol Value Units
Peak Power Dissipation at Ta = 25°C, Tp = 1ms (Note 1) Ppk 400 (Min.) Watts
Steady Power Dissipation Pd1
Peak Forward Surge Current, 8.3ms Single Half Sine-wave
Superimposed on Rated Load (JEDEC method) (Note 2,3) Ifsm 40 Amps
Maximum Instantaneous Forward Voltage at 25A for
Unidirectional Only Vf3.5 Volts
Operating and Storage Temperature Range Tj, Tstg -55 to +150 °C
Notes : 1. Non-repetitive current pulse and derated above Ta = 25°C.
2. Mounted on 5mm2 (0.013mm thick) copper pads to each terminal.
3. 8.3ms single half sine-wave or equivalent square wave, duty cycle = 4 pulses per
minutes maximum.
Devices for bipolar applications:
1. For bidirectional use C or CA sufx for types SMAJ5.0 through types SMAJ188.
2. Electrical characteristics apply in both directions.