SMF4L Datasheet, PDF (1/6 Pages) Littelfuse – TVS Diodes Surface Mount – 400W

TVS Diodes
Surface Mount – 400W > SMF4L Series
SMF4L Series
Uni-directional
Agency Approvals
AGENCY
AGENCY FILE NUMBER
E230531
Maximum Ratings and Thermal Characteristics
(T_A=25^OC unless otherwise noted)
Parameter
Symbol Value Unit
Peak Pulse Power 8/20µs (Note 2)
Dissipation at
P_PPM
T_A=25ºC (Note 1) _{10/1000µs (Note 3)}
Thermal Resistance Junction to
Ambient
R_θJA
2000 W
400
W
220 °C/W
Thermal Resistance Junction to Lead
R_θJL
100 °C/W
Operating and Storage Temperature
Range
T_J,T_STG
-55 to
150
°C
Notes:
1. Non-repetitive current pulse, per Fig. 4 and derated above T_J (initial) =25ºC per Fig. 3.
2. SMF4L5.0A~SMF4L9.0A Peak Pulse Power Dissipation is 1850W min, 2000W
typical @8/20us
3. SMF4L5.0A~SMF4L9.0A Peak Pulse Power Dissipation is 370W min, 400W typical @
10/1000µs
Functional Diagram
Bi-directional
RoHS
Pb e3
Description
The SMF4L series of SOD-123FL small and flat lead low-
profile plastic package is designed specifically to protect
sensitive electronic equipment from voltage transients
induced by lightning and other transient voltage events.
Features
• 400W peak pulsepower
capability at 10/1000µs
waveform, repetition rate
(duty cycle): 0.01%
• Compatible with industrial
standard package SOD-
123FL
• Low inductance, excellent
clamping capability
• For surface mounted
applications to optimize
board space
• 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
30kV(Air), 30kV (Contact)
• ESD protection of data
lines in accordance with
IEC 61000-4-2
• EFT protection of data
lines in accordance with
IEC 61000-4-4
• Fast response time:
typically less than 1.0ns
from 0 Volts to V_BR min
• High temperature
soldering: 260°C/40
seconds at terminals
• Glass passivated junction
• Built-in strain relief
• Plastic package is
flammability rated V-0 per
Underwriters Laboratories
• Meet MSL level1, per
J-STD-020, LF maximun
peak of 260°C
• Matte tin lead–free plated
• Halogen-free and RoHS
compliant
• Pb-free E3 means 2^nd level
interconnect is Pb-free
and the terminal finish
material is tin(Sn) (IPC/
JEDEC J-STD-609A.01)
Applications
SMF4L devices are ideal for the protection of portable
devices/hard drives, notebooks, V_CC busses, POS terminal,
SSDs, power supplies, monitors, and vulnerable circuit
used in other consumer applications.
Cathode
Uni-directional
Anode
©2016 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 08/02/16