Littelfuse SA Series User Manual
Sa series, Transient voltage suppression diodes, Axial leaded – 500w > sa series
Transient Voltage Suppression Diodes
© 2014 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 01/24/14
Axial Leaded – 500W > SA series
The SA Series is designed specifically to protect sensitive
electronic equipment from voltage transients induced by
lightning and other transient voltage events.
Description
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.
Applications
Features
Parameter
Symbol
Value
Unit
Peak Pulse Power Dissipation by
10/1000μs Test Waveform (Fig.2)
(Note 1)
P
PPM
500
W
Steady State Power Dissipation on
Infinite Heat Sink at T
L
=75ºC (Fig. 6)
P
D
3.0
W
Peak Forward Surge Current, 8.3ms
Single Half Sine Wave Unidirectional
Only (Note 2)
I
FSM
70
A
Maximum Instantaneous Forward
Voltage at 35A for Unidirectional
Only (Note 3)
V
F
3.5/5.0
V
Operating Junction and Storage
Temperature Range
T
J
, T
STG
-55 to 150
°C
Typical Thermal Resistance Junction
to Lead
R
uJL
20
°C/W
Typical Thermal Resistance Junction
to Ambient
R
uJA
75
°C/W
Notes:
1. Non-repetitive current pulse , per Fig. 4 and derated above T
A
= 25°C per Fig. 3.
2. Measured on 8.3ms single half sine wave or equivalent square wave, duty cycle=4 per
minute maximum.
3. V
F
<3.5V for devices of V
BR
_
<
200V and V
F
<5.0V for devices of V
BR
_
>
201V.
Maximum Ratings and Thermal Characteristics
(T
A
=25°C unless otherwise noted)
Agency Approvals
•
V
BR
@T
J
= V
BR
@25°C × (1+
α
T
x (T
J
- 25))
(αT: Temperature Coefficient)
• Glass passivated chip
junction in DO-15 Package
• 500W peak pulse
capability at 10/1000μs
waveform, repetition rate
(duty cycles):0.01%
• Fast response time:
typically less than 1.0ps
from 0 Volts to BV min
• Excellent clamping
capability
• Typical failure mode is
short from over-specified
voltage or current
• Whisker test is conducted
based on JEDEC
JESD201A per its table 4a
and 4c
• IEC-61000-4-2 ESD
15kV(Air), 8kV (Contact).
• ESD protection of data
lines in accordance with
IEC 61000-4-2 (IEC801-2)
• EFT protection of data
lines in accordance with
IEC 61000-4-4 (IEC801-4)
• Low incremental surge
resistance
• Typical I
R
less than 1μA
above 13V
• High temperature
soldering guaranteed:
260°C/40 seconds /
0.375”,(9.5mm) lead
length, 5 lbs., (2.3kg)
tension
• Plastic package has
underwriters laboratory
flammability classification
94V-O
• Matte tin lead–free plated
• Halogen free and RoHS
compliant
AGENCY
AGENCY FILE NUMBER
E128662/E230531
RoHS
SA Series
Bi-directional
Uni-directional
Functional Diagram
Bi-directional
Uni-directional
Cathode
Anode
Additional Information