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PDF 1.5SMC7.5A Fiche technique - Littelfuse

Numéro de référence 1.5SMC7.5A
Description Transient Voltage Suppression Diodes
Fabricant Littelfuse 
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1.5SMC7.5A Datasheet, Description
Transient Voltage Suppression Diodes
Surface Mount – 1500W > 1.5SMC series
RoHS 1.5SMC Series
Agency Approvals
AGENCY
AGENCY FILE NUMBER
E230531
Maximum Ratings and Thermal Characteristics
(TA=25OC unless otherwise noted)
Parameter
Symbol
Peak Pulse Power Dissipation at
(TFAi=g2.15)º(CNobtye
10x1000μs waveform
1), (Note 2)
PPPM
Power Dissipation on infinite heat
sink at TA=50OC
Peak Forward Surge Current, 8.3ms
Single Half Sine Wave (Note 3)
Maximum Instantaneous Forward
Voltage at 100A for Unidirectional
only (Note 4)
Operating Junction and Storage
Temperature Range
PM(AV)
IFSM
VF
TJ, TSTG
Value
1500
6.5
200
3.5/5.0
-65 to 150
Unit
W
W
A
V
°C
Typical Thermal Resistance Junction
to Lead
RuJL
15 °C/W
Typical Thermal Resistance Junction
to Ambient
RuJA
75 °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 0.31x0.31” (8.0 x 8.0mm) 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 <_ 200V and VF<5.0V for VBR >_ 201V.
Description
The 1.5SMC series is designed specifically to protect
sensitive electronic equipment from voltage transients
induced by lightning and other transient voltage events.
Features
t)BMPHFO'SFF
t 'BTUSFTQPOTFUJNF
t 3P)4DPNQMJBOU
t 'PSTVSGBDFNPVOUFE
applications to optimize
board space
typically less than 1.0ps
from 0V to BV min
t &YDFMMFOUDMBNQJOH
capability
t -PXQSPmMFQBDLBHF
t -PXJODSFNFOUBMTVSHF
t #VJMUJOTUSBJOSFMJFG
resistance
t 5ZQJDBMNBYJNVN
temperature coefficient
t 5ZQJDBM*R less than 1μA
above 13V
ΔVBR = 0.1% x VBR@25°C x ΔT
t (MBTTQBTTJWBUFEDIJQ
junction
t )JHI5FNQFSBUVSF
soldering guaranteed:
260°C/40 seconds at
terminals
t 8QFBLQVMTFQPXFS
capability at 10×1000μs t 1MBTUJDQBDLBHFIBT
waveform, repetition rate Underwriters Laboratory
(duty cycles):0.01%
Flammability 94V-O
t .BUUF5JO-FBEoGSFF1MBUFE
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.
©2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to http://www.Littelfuse.com/series/1.5SMC.html for current information.
47
Revision: January 09, 2009
1.5SMC Series
1.5SMC7.5A Fiche technique
Transient Voltage Suppression Diodes
Surface Mount – 1500W > 1.5SMC series
Ratings and Characteristic Curves (TA=25°C unless otherwise noted)
Figure 1 - Peak Pulse Power Rating
Figure 2 - Pulse Derating Curve
100 100
75
10
0.31x0.31" (8.0x8.0mm)
Copper Pad Area
1
0.000001
0.00001
0.0001
td-Pulse Width (sec.)
0.001
50
25
0
0 25 50 75 100 125 150 175
TA - Ambient Temperature (ºC)
200
Figure 3 - Pulse Waveform
150
100
50
tr=10μsec
Peak Value
IPPM
TJ=25°C
Pulse Width(td) is defined
as the point where the peak
current decays to 50% of IPPM
Half Value
( )IPPM IPPM
2
10/1000μsec. Waveform
as defined by R.E.A
0
0
td
1.0
2.0
t-Time (ms)
3.0
4.0
Figure 4 - Typical Junction Capacitance
100000
10000
Bi-directional V=0V
Uni-directional V=0V
1000
Uni-directional @VR
100
10 Tj=25C
f =1.0MHz
Vsig=50mVp-p
Bi-directional @VR
1
1.0
10.0
100.0
1000.0
VBR - Reverse Breakdown Voltage (V)
Figure 5 - Steady State Power Dissipation Derating
Curve
6.5
6
5.5
5
4.5
4
3.5
3
2.5
2
1.5
1
0.5
0
0
25 50 75 100 125 150 175
TA - Ambient Temperature (ºC)
Figure 6 - Maximum Non-Repetitive Peak Forward
Surge Current Uni-Directional Only
200
180
160
140
120
100
80
60
40
20
0
1
10
Number of Cycles at 60 Hz
100
©2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to http://www.Littelfuse.com/series/1.5SMC.html for current information.
49
Revision: January 09, 2009
1.5SMC Series

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