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P4SMA39A Datasheet(PDF) 1 Page - Littelfuse

Part # P4SMA39A
Description  Transient Voltage Suppression Diodes
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Manufacturer  LITTELFUSE [Littelfuse]
Direct Link  http://www.littelfuse.com
Logo LITTELFUSE - Littelfuse

P4SMA39A Datasheet(HTML) 1 Page - Littelfuse

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©2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Transient Voltage Suppression Diodes
Revision: January 09, 2009
P4SMA Series
Surface Mount – 400W > P4SMA series
Please refer to http://www.Littelfuse.com/series/P4SMA.html for current information.
Description
Agency Approvals
P4SMA Series
Features
applications to optimize
board space
temperature coefficient
ΔV
BR = 0.1% x VBR@25°C x ΔT
junction
capability at 10×1000μs
waveform, repetition rate
(duty cycles):0.01%
typically less than 1.0ps
from 0V to BV min
capability
resistance
R less than 1μA
above 12V
soldering guaranteed:
260°C/40 seconds at
terminals
Underwriters Laboratory
Flammability 94V-O
Applications
TVS devices are ideal for the protection of I/O Interfaces,
V
CC bus and other vulnerable circuits used in Telecom,
Computer, Industrial and Consumer electronic applications.
The P4SMA series is designed specifically to protect
sensitive electronic equipment from voltage transients
induced by lightning and other transient voltage events.
Maximum Ratings and Thermal Characteristics
(T
A=25
O
C unless otherwise noted)
Parameter
Symbol
Value
Unit
Peak Pulse Power Dissipation at
T
A=25ºC by 10x1000μs waveform
(Fig.1)(Note 1), (Note 2)
P
PPM
400
W
Power Dissipation on infinite heat
sink at T
A=50
O
C
P
M(AV)
3.3
W
Peak Forward Surge Current, 8.3ms
Single Half Sine Wave (Note 3)
I
FSM
40
A
Maximum Instantaneous Forward
Voltage at 25A for Unidirectional
only (Note 4)
V
F
3.5V/6.5
V
Operating Junction and Storage
Temperature Range
T
J, TSTG
-65 to 150
°C
Typical Thermal Resistance Junction
to Lead
R
uJL
30
°C/W
Typical Thermal Resistance Junction
to Ambient
R
uJA
120
°C/W
Notes:
1. Non-repetitive current pulse , per Fig. 3 and derated above T
A = 25
O
C per Fig. 2 .
2. Mounted on 0.2x0.2” (5.0 x 5.0mm) copper pad 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. V
F<3.5V for VBR _
<
200V and V
F<6.5V for VBR _
>
201V.
AGENCY
AGENCY FILE NUMBER
E230531
RoHS


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