SMAJ Series
Transient Voltage Suppressor
Features:
•
•
•
•
•
•
•
•
•
•
For surface mounted application.
Low profile package.
Built-in strain relief.
Glass passivated junction.
Excellent clamping capability.
Fast response time : Typically less than 1.0 ps from 0 volts to 8 volts min.
Typical I
R
less than 1 µA above 10 V.
High temperature soldering guaranteed : 260°C / 10 s at terminals.
Plastic material used carried underwriters laboratory flammability classification 94V-0.
400 watts peak pulse power capability with a 10 / 1,000 µs waveform (300 W above 78 V).
SMA/DO-214AC
Dimensions : Inches (Millimetres)
Mechanical Data
Case
Terminals
Polarity
Packaging
:
:
:
:
Moulded plastic.
Pure tin plated, lead free.
Indicated by cathode band.
12 mm tape per EIA std RS-481.
Marking Diagram
XX
G
Y
M
= Specific device code
= Green compound
= Year
= Work month
Maximum Ratings and Electrical Characteristics
Ratings at 25°C ambient temperature unless otherwise specified.
Type Number
Peak Power Dissipation at T
A
= 25°C, T
p
= 1 ms (Note 1)
Steady State Power Dissipation
Peak Forward Surge Current, 8.3 ms Single Half
Sine-wave Superimposed on Rated Load
(JEDEC method) (Note 2, 3)
Maximum Instantaneous Forward Voltage at 25 A for
Unidirectional Only
Operating and Storage Temperature Range
Symbol
P
PK
P
D
I
FSM
Value
Minimum 400
Watts
1
40
Amps
Unit
V
F
T
J
, T
STG
3.5
-55 to +150
Volts
°C
Note 1: Non-repetitive current pulse per Fig. 3 and derated above T
A
= 25°C per fig. 2.
Note 2: Mounted on 5 × 5 mm (0.013 mm thick) copper pads to each terminal.
Note 3: 8.3 ms single half sine-wave or equivalent square wave, duty cycle = 4 pulses per minute maximum.
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Page <1>
26/05/11 V1.1
SMAJ Series
Transient Voltage Suppressor
Devices for bipolar applications
1. For bidirectional use C or CA suffix for types SMAJ5.0 through types SMAJ188.
2. Electrical characteristics apply in both directions.
Ratings and Characteristic Curves
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www.farnell.com
www.newark.com
Page <2>
26/05/11 V1.1
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