SHANGHAI SEMITECH SEMICONDUCTOR CO., LTD
SMAJ5.0 --- SMAJ440CA
400W Surface Mount
Transient Voltage
Suppressors
Features
a
a
a
a
a
a
Working peak reverse voltage range – 5.0V to 440V.
Peak power dissipation 400W @10 x 1000 us Pulse
Low profile package.
Excellent clamping capability.
Glass passivated junction.
Fast response time: typically less than 1 ns for Uni-direction.
Less than 5 ns for Bi-direction, from 0 Volts to BV min
a
a
a
Typical IR less than 1uA
above 10V.
Plastic material has UL flammability classification 94V-O
RoHS compliant in lead-free versions
Mechanical Characteristics
CASE: Void-free, JEDEC DO-214AC Molded Plastic over glass passivated junction..
Mounting Position: Any
Polarity: by cathode band denotes uni-directional device, none cathode band denotes bi-directional device.
Terminal: Solder plated, solderable per MIL-STD-750, Method 2026
Maximum Ratings And Characteristics @ 25°C Ambient Temperature (unless otherwise noted)
Parameter
Symbol
PPPM
Value
Min 400
Units
W
Peak Pulse Power Dissipation on 10/1000 us Waveform
(Note 1, 2, FIG.1)
Peak Pulse Current of on 10/1000us Waveform
Peak Forward Surge Current, 8.3ms Single Half Sine-wave Superimposed on
Rated Load, (JEDEC Method) (Note 2. 3)
(Note 1, FIG.3)
IPPM
See Table 1
Amps
IFSM
40
Amps
Operating Junction Temperature Range
Storage Temperature Range
TJ
-55 to 150
-55 to 150
°C
°C
TSTG
Notes:
1. Non-repetitive current pulse, per Fig.3 and derated above TA=25°C per Fig.2.
2. Mounted on 5.0mm2 (0.03mm thick) Copper Pads to each terminal.
3. 8.3 ms single half sine-wave, or equivalent square wave, Duty cycle=4 pluses per minute maximum.
WWW.SE
MITECH.CN