Transient Voltage Suppression Diodes
Surface Mount – 400W > P4SMA series
RoHS P4SMA 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 25A for Unidirectional
only (Note 4)
Operating Junction and Storage
Temperature Range
PM(AV)
IFSM
VF
TJ, TSTG
Value
400
3.3
40
3.5V/6.5
-65 to 150
Unit
W
W
A
V
°C
Typical Thermal Resistance Junction
to Lead
RuJL
30 °C/W
Typical Thermal Resistance Junction
to Ambient
RuJA
120 °C/W
Notes:
1. Non-repetitive current pulse , per Fig. 3 and derated above TA = 25OC 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. VF<3.5V for VBR <_ 200V and VF<6.5V for VBR >_ 201V.
Description
The P4SMA 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 12V
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/P4SMA.html for current information.
13
Revision: January 09, 2009
P4SMA Series
