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©2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Transient Voltage Suppression Diodes
Revision: January 09, 2009
1KSMB Series
Surface Mount – 1000W > 1KSMB series
Please refer to http://www.Littelfuse.com/series/1KSMB.html for current information.
1KSMB Series
The 1KSMB series is designed specifically to protect
sensitive electronic equipment from voltage transients
induced by lightning and other transient voltage events.
Description
1KSMB Series
Agency Approvals
Features
t)BMPHFO'SFF
t 3P)4DPNQMJBOU
t 'PSTVSGBDFNPVOUFE
applications to optimize
board space
t -PXQSPmMFQBDLBHF
t #VJMUJOTUSBJOSFMJFG
t 5ZQJDBMNBYJNVN
temperature coefficient
∆VBR = 0.1% x VBR@25°C x ∆T
t (MBTTQBTTJWBUFEDIJQ
junction
t 8QFBLQVMTFQPXFS
capability at 10×1000s
waveform, repetition rate
(duty cycles):0.01%
t 'BTUSFTQPOTFUJNF
typically less than 1.0ps
from 0V to BV min
t &YDFMMFOUDMBNQJOH
capability
t -PXJODSFNFOUBMTVSHF
resistance
t 5ZQJDBM*R less than 1µA
above 12V
t )JHI5FNQFSBUVSF
soldering guaranteed:
260°C/40 seconds at
terminals
t 1MBTUJDQBDLBHFIBT
Underwriters Laboratory
Flammability 94V-O
t .BUUF5JO-FBEoGSFF1MBUFE
t "WBJMBCMFJOCSFBLEPXO
Voltage from 6.8V to 160V
specially designed for
automotive applications
t 0GGFST)JHI4VSHFSBUJOHJO
compact package: bridges
the gap between 600W
and 1.5KW
Applications
TVS devices are ideal for the protection of I/O Interfaces,
VCC bus and other vulnerable circuits used in Telecom,
Computer, Industrial and Consumer electronic applications.
Maximum Ratings and Thermal Characteristics
(TA=25OC unless otherwise noted)
Parameter Symbol Value Unit
Peak Pulse Power Dissipation at
TA=25ºC by 10x1000µs waveform
(Fig.1)(Note 1), (Note 2)
PPPM 1000 W
Power Dissipation on infinite heat
sink at TA=50OCPM(AV) 5.0 W
Peak Forward Surge Current, 8.3ms
Single Half Sine Wave (Note 3) IFSM 100 A
Maximum Instantaneous Forward
Voltage at 50A for Unidirectional
only (Note 4)
VF3.5V/5.0 V
Operating Junction and Storage
Temperature Range T
J, TSTG -65 to 150 °C
Typical Thermal Resistance Junction
to Lead RuJL 20 °C/W
Typical Thermal Resistance Junction
to Ambient RuJA 100 °C/W
Notes:
1. Non-repetitive current pulse , per Fig. 3 and derated above TA = 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.
AGENCY AGENCY FILE NUMBER
E128662
RoHS