Littelfuse SMA6J User Manual
Transient Voltage Suppression Diodes
Bi-directional
Surface Mount – 600W > SMA6J series
SMA6J Series
Uni-directional
Agency Approvals
AGENCY AGENCY FILE NUMBER
E230531
Maximum Ratings and Thermal Characteristics
(TA=25°C unless otherwise noted)
Parameter Symbol Value Unit
Peak Pulse Power Dissipation at
TA=25ºC by 10/1000µs Waveform
(Fig.2)(Note 1), (Note 2)
Power Dissipation on Infinite Heat
Sink at T
Peak For ward Surge Current, 8.3ms
Single Half Sine Wave (Note 3)
Maximum Instantaneous Forward
Voltage at 25A for Unidirectional
Only (Note 4)
Operating Junction and Storage
Temperature Range
Typical Thermal Resistance Junction
to Lead
Typical Thermal Resistance Junction
to Ambient
Notes:
1. Non-repetitive current pulse, per Fig.4 and derated above T
2. Mounted on 5.0x5.0mm copper pad to each terminal.
3. Measured on 8.3ms single half sine wave or equivalent square wave for unidirectional
device only.
4. V
=50°C
A
< 3.5V for VBR _< 200V and VF< 6.5V for V
F
BR
_> 201V.
P
PPM
P
M(AV)
I
FSM
V
, T
T
J
R
uJL
R
uJA
3.5V/6.5 V
F
-55 to 150 °C
STG
=25ºC per Fig. 3.
A
600 W
3.3 W
60 A
30 °C/W
120 °C/W
RoHS
Description
The SMA6J series is designed specifically to protect
sensitive electronic equipment from voltage transients
induced by lightning and other transient voltage events.
Features
• For surface mounted
applications to optimize
board space
• Low prole package
• Typical failure mode is
short from over-specified
voltage or current
• Whisker test is conducted
based on JEDEC
JESD201A per its table 4a
and 4c
• IEC-61000-4-2 ESD
15kV(Air), 8kV (Contact)
• ESD protection of data
lines in accordance with
IEC 61000-4-2 (IEC801-2)
• EFT protection of data
lines in accordance with
IEC 61000-4-4 (IEC801-4)
• Built-in strain relief
• Glass passivated junction
• Low inductance
• Excellent clamping
capability
• 600W peak pulsepower
capability at 10/1000µs
waveform, repetition rate
(duty cycle): 0.01%
• Fast response time:
typically less than 1.0ps
from 0 Volts to V
• Typical I
less than 1µA
R
BR
min
above 12V
• High temperature
soldering: 260°C/40
seconds at terminals
•
VBR @TJ= VBR@25°C × (1+αT
x (T
- 25))
J
(αT: Temperature Coefficient)
• Plastic package has
underwriters laboratory
flammability 94V-O
• Meet MSL level1, per
J-STD-020, LF maximum
peak of 260°C
• Matte tin lead–free plated
• Halogen free and RoHS
compliant
Applications
TVS devices are ideal for the protection of I/O Interfaces,
V
bus and other vulnerable circuits used in Telecom,
CC
Computer, Industrial and Consumer electronic applications.
Additional Information
Functional Diagram
Cathode
Uni-directional
© 2014 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 01/20/14
Anode
Datasheet
Resources
Samples
Transient Voltage Suppression Diodes
Voltage Transients
Time
Voltage Across TVS
Current Through TVS
Voltage or Current
0.1
1
10
100
0.0000010.00001 0.0001 0.001
t
d
-Pulse Width (sec.)
0.2x0.2" (5.0x5.0mm)
Copper Pad Area
P
PPM
-Peak Pulse Power (kW)
Surface Mount – 600W > SMA6J series
Electrical Characteristics (T
Part
Number
(Uni)
Marking
UNI MIN MAX
=25°C unless otherwise noted)
A
Reverse Stand
off Voltage VR
(Volts)
Breakdown
Voltage V
(Volts) @ I
I
T
Maximum
Clamping
Voltage V
@ Ipp
Test
BR
Current
T
(mA)
(V)
Maximum
Peak
Pulse
C
Current Ipp
(A)
Maximum
Reverse
Leakage IR
@ V
R
(µA)
Agency
Approval
SMA6J5.0A 6BA 5.0 6.40 7. 0 0 10 9.2 65.3 800 X
SMA6J12A 6BE 12.0 13.30 14.70 1 19.9 30.2 1. 0 X
I-V Curve Characteristics
Uni-directional
BR
V
Vc
VR
IR
VF
IT
Ipp
V
P
Peak Pulse Power Dissipation -- Max power dissipation
PPM
V
Stand-off Voltage -- Maximum voltage that can be applied to the TVS without operation
R
V
Breakdown Voltage -- Maximum voltage that flows though the TVS at a specified test current (IT)
BR
V
Clamping Voltage -- Peak voltage measured across the suppressor at a specified Ippm (peak impulse current)
C
I
Reverse Leakage Current -- Current measured at V
R
V
Forward Voltage Drop for Uni-directional
F
Ratings and Characteristic Curves (T
Figure 1 - TVS Transients Clamping Waveform
R
=25°C unless otherwise noted)
A
Figure 2 - Peak Pulse Power Rating Curve
continues on next page.
Specifications are subject to change without notice.
© 2014 Littelfuse, Inc.
Revised: 01/20/14
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