TransientVoltage Suppression Diodes
Surface Mount – 1000W > 1KSMB series
RoHS
1KSMB Series
Description
The 1KSMB series is designed specifically to protect
sensitive electronic equipment from voltage transients
induced by lightning and other transient voltage events.
Features
tꢀ)BMPHFOꢁ'SFF
tꢀ -PXꢀJODSFNFOUBMꢀTVSHFꢀ
resistance
tꢀ 3P)4ꢀDPNQMJBOU
tꢀ 5ZQJDBMꢀ*R less than 1ꢀA
above 12V
tꢀ 'PSꢀTVSGBDFꢀNPVOUFEꢀ
applications to optimize
board space
tꢀ -PXꢀQSPmMFꢀQBDLBHF
tꢀ #VJMUꢁJOꢀTUSBJOꢀSFMJFG
tꢀ 5ZQJDBMꢀNBYJNVNꢀ
temperature coefficient
ΔVBR = 0.1% x VBR@25°C x ΔT
tꢀ )JHIꢀ5FNQFSBUVSFꢀ
soldering guaranteed:
260°C/40 seconds at
terminals
tꢀ 1MBTUJDꢀQBDLBHFꢀIBTꢀ
Underwriters Laboratory
Flammability 94V-O
Agency Approvals
AGENCY
AGENCY FILE NUMBER
E128662
tꢀ (MBTTꢀQBTTJWBUFEꢀDIJQꢀ
junction
tꢀ ꢂꢃꢃꢃ8ꢀQFBLꢀQVMTFꢀQPXFSꢀ
capability at 10×1000μs
waveform, repetition rate
(duty cycles):0.01%
tꢀ .BUUFꢀ5JOꢀ-FBEoGSFFꢀ1MBUFE
tꢀ "WBJMBCMFꢀJOꢀCSFBLEPXOꢀ
Voltage from 6.8V to 160V
specially designed for
Maximum Ratings andThermal Characteristics
(TA=25OC unless otherwise noted)
automotive applications
tꢀ 0GGFSTꢀ)JHIꢁ4VSHFꢀSBUJOHꢀJOꢀ
compact package: bridges
the gap between 600W
and 1.5KW
tꢀ 'BTUꢀSFTQPOTFꢀUJNFꢄꢀ
typically less than 1.0ps
from 0V to BV min
tꢀ &YDFMMFOUꢀDMBNQJOHꢀ
capability
Parameter
Symbol
PPPM
Value
1000
Unit
W
Peak Pulse Power Dissipation at
TA=25ºC by 10x1000ꢀs waveform
(Fig.1)(Note 1), (Note 2)
Power Dissipation on infinite heat
sink atTA=50OC
PM(AV)
IFSM
5.0
W
A
Peak Forward Surge Current, 8.3ms
Single Half Sine Wave (Note 3)
100
Applications
Maximum Instantaneous Forward
Voltage at 50A for Unidirectional
only (Note 4)
TVS devices are ideal for the protection of I/O Interfaces,
CC bus and other vulnerable circuits used inTelecom,
VF
3.5V/5.0
V
V
Computer, Industrial and Consumer electronic applications.
Operating Junction and Storage
Temperature Range
T , TSTG -65 to 150
°C
J
TypicalThermal Resistance Junction
to Lead
RuJL
RuJA
20
°C/W
°C/W
TypicalThermal Resistance Junction
to Ambient
100
Notes:
1. Non-repetitive current pulse , per Fig. 3 and derated aboveTA = 25OC per Fig. 2.
2. Mounted on copper pad area of 0.2x0.2” (5.0 x 5.0mm) to each terminal.
3. Measured on 8.3ms single half sine wave or equivalent square wave for unidirectional
device only, duty cycle=4 per minute maximum.
4. VF<3.5V for VBR<_ 50V and VF<5.0V for VBR >_ 51V.
©2009 Littelfuse, Inc.
35
Revision: January 09, 2009
1KSMB Series
Specifications are subject to change without notice.
Please refer to http://www.Littelfuse.com/series/1KSMB.html for current information.