SMAJ5.0 thru 440CA
Surface Mount Transient Voltage Suppressors
Peak Pulse Power 400W Stand Off Voltage 5.0 to 440V
Features
Plastic package has Underwriters Laboratory Flammability
Classification 94V-0
Optimized for LAN protection applications
Ideal for ESD protection of data lines in accordance with
IEC 1000-4-2 (IEC801-2)
Ideal for EFT protection of data lines in accordance with
IEC 1000-4-4 (IEC801-4)
Low profile package with built-in strain relief for surface
mounted applications
Glass passivated junction
Low incremental surge resistance, excellent clamping capability
400W peak pulse power capability with a 10/1000us wave-
form, repetition rate (duty cycle): 0.01% (300W above 78V)
Very fast response time
High temperature soldering guaranteed:
250
o
C/10 seconds at terminals
Mechanical Data
Case: JEDEC DO-214AC(SMA) molded plastic over passivated
chip
Terminals: Solder plated, solderable per MIL-STD-750,
Method 2026
Polarity: For uni-directional types the band denotes the cathode,
which is positive with respect to the anode under normal TVS
operation
Mounting Position: Any
Weight: 0.002oz., 0.064g
Devices for Bidirectional Applications
For bi-directional devices, use suffix CA (e.g. SMAJ10CA). Electrical characteristics apply in both directions.
Maximum Ratings and Thermal Characteristics
(Ratings at 25
o
C ambient temperature unless otherwise specified.)
Parameter
Peak pulse power dissipation with
a 10/1000
u
s waveform
(1,2)
(see Fig. 1)
Peak pulse current with a 10/1000
u
s waveform
(1)
Peak forward surge current, 8.3ms single half sine-wave
uni-directional only
(2)
Typical thermal resistance, junction to ambient
(3)
Typical thermal resistance, junction to lead
Operating junction and storage temperature range
Notes:
Symbol
P
PPM
I
PPM
I
FSM
R
θ
JA
R
θ
JL
T
J
, T
STG
Value
400
See Next Table
40
120
30
-55 to +150
o
Unit
W
A
A
C/W
C/W
o
o
C
1. Non-repetitive current pulse, per Fig. 3 and derated above T
A
=25
o
C per Fig. 2. Rating is 300W above 78V
2. Mounted on 0.2 x 0.2" (5.0 x 5.0 mm) copper pads to each terminal
3. Mounted on minimum recommended pad layout
572