Littelfuse SMF Series User Manual
Smf series, Transient voltage suppression diodes, Surface mount – 200w > smf series
Transient Voltage Suppression Diodes
© 2014 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 01/20/14
Surface Mount – 200W > SMF Series
Description
Features
Maximum Ratings and Thermal Characteristics
(T
A
=25°C unless otherwise noted)
Parameter
Symbol
Value
Unit
Peak Pulse Power Dissipation at
T
A
=25ºC by 10/1000µs (Note 1)
P
PPM
200
W
Thermal Resistance Junction- to-
Ambient
R
THJ-A
220
°C/W
Thermal Resistance Junction- to-
Lead
R
THJ-L
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
A
=25ºC per Fig. 3.
The SMF series is designed specifically to protect sensitive
electronic equipment from voltage transients induced by
lightning and other transient voltage events.
SMF package is 50% smaller in footprint when compare to
SMA package and deliverying low height profile (1.1mm) in
the industry.
Applications
SMF devices are ideal for the protection of I/O interfaces,
V
CC
bus and other vulnerable circuit used in cellular phones,
portable devices, business machines, power supplies and
other consumer applications.
• Compatible with
industrial standard
package SOD-123F
• For surface mounted
applications to optimize
board space
• Low profile: maximum
height of 1.1mm.
• 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 (IEC801-2)
• EFT protection of data
lines in accordance with
IEC 61000-4-4 (IEC801-4)
• Low inductance, excellent
clamping capability
• 200W peak pulsepower
capability at 10/1000µs
waveform, repetition rate
(duty cycle): 0.01%
• 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
• Meet MSL level1, per
J-STD-020, LF maximum
peak of 260°C
• Matte tin lead–free plated
• Halogen-free and RoHS
compliant
SMF Series
Functional Diagram
Bi-directional
Uni-directional
Cathode
Anode
Uni-directional
RoHS
Agency Approvals
AGENCY
AGENCY FILE NUMBER
E230531
Additional Information