Littelfuse SAC User Manual
Transient Voltage Suppression Diodes
Axial Leaded – 500W > SAC series
SAC Series
Uni-directional
Agency Approvals
AGENCY AGENCY FILE NUMBER
E230531
Maximum Ratings and Thermal Characteristics
(T
=25°C unless otherwise noted)
A
Parameter Symbol Value Unit
Peak Pulse Power Dissipation by
10/1000μs Test Waveform (Fig.1)
(Note 1)
Steady State Power Dissipation on
Infinite Heat Sink at T
=75ºC (Fig. 5)
L
Operating Junction and Storage
Temperature Range
Note:
1. Non-repetitive current pulse , per Fig. 3 and derated above T
P
PPM
P
D
, T
T
J
500 W
-55 to 150 °C
STG
= 25°C per Fig. 2.
A
3.0 W
RoHS
Description
The SAC Series is designed specifically to protect sensitive
electronic equipment from voltage transients induced by
lightning and other transient voltage events.
Features
• Glass passivated chip
junction in DO-15
Package
• 500W peak pulse power
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
• Typical failure mode is
short from over-specified
voltage or current
• Whisker test is
conducted based on
JEDECJESD201A per its
table 4a and 4c
• IEC-61000-4-2 ESD
15kV(Air), 8kV (Contact)
• ESD protection of data
• EFT protection of data
lines in accordance with
IEC 61000-4-4 (IEC801-4)
• Low incremental surge
resistance
• 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
• Ideal for data line
applications
• Halogen free and RoHS
compliant
lines in accordance with
IEC 61000-4-2 (IEC801-2)
Applications
TVS devices are ideal for the protection of I/O interfaces,
bus and other vulnerable circuits used in telecom,
V
CC
computer, industrial and consumer electronic applications.
Electrical Characteristics.(T
Reverse
Part
Number
Stand off
Voltage V
(V)
SAC5.0
SAC6.0
SAC7.0
SAC8.0
SAC8.5
SAC 10
SAC12
SAC15
SAC18
SAC22
SAC26
SAC30
SAC36
SAC45
SAC50
© 2014 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 01/24/14
5.0 7.60 300 10.0 44.0 50 75 1. 0 100 X
6.0 7.90 300 11. 2 41.0 50 75 1.0 10 0 X
7. 0 8.33 300 12.6 38.0 50 75 1. 0 100 X
8.0 8.89 100 13.4 36.0 50 75 1. 0 100 X
8.5 9.44 50 14.0 34.0 50 75 1. 0 100 X
10.0 11. 1 0 5 16.3 29.0 50 75 1. 0 100 X
12.0 13.30 1 19.0 25.0 50 75 1. 0 100 X
15.0 16.70 1 23.6 20.0 50 75 1. 0 100 X
18.0 20.00 1 28.8 15.0 50 75 1. 0 100 X
22.0 24.40 1 35.4 14.0 50 75 1. 0 100 X
26.0 28.90 1 42.3 11. 1 50 75 1.0 100 X
30.0 33.30 1 48.6 10.0 50 75 1. 0 100 X
36.0 40.00 1 60.0 8.6 50 75 1. 0 100 X
45.0 50.00 1 77.0 6.8 50 150 1. 0 200 X
50.0 55.50 1 88.0 5.8 50 150 1. 0 200 X
Breakdown
Voltage V
R
MIN
=25°C unless otherwise noted)
A
Maximum
Reverse
BR
(V)
Leakage
@ V
I
R
R
(µA)
Maximum
Clamping
Voltage at
I
=5.0A
pp
V
(V)
C
Maximum
Peak
Pulse
Current
(Fig.3)
I
(A)
PP
Maximum
Junction
Capacitance
@ 0 Volts
(pF)
Working
Inverse
Blocking
Voltage
(V)
V
WIB
Inverse
Blocking
Leakage
Current at
@ V
I
IB
WIB
(mA)
Peak
Inverse
Blocking
Voltage
(V)
V
PIB
Agency
Approval
Transient Voltage Suppression Diodes
Axial Leaded – 500W > SAC series
Ratings and Characteristic Curves (T
=25°C unless otherwise noted)
A
Figure 1 - Peak Pulse Power Rating Curve Figure 2 - Pulse Derating Curve
1000
100
10
1
-Peak Pulse Power (kW)
PPM
P
0.1
0.000001 0.00001 0.0001 0.001
td-Pulse Width (Sec.)
Figure 3 - Pulse Waveform
150
RSM
100
tr=10µsec
Peak Value
I
PPM
TJ=25°C
Pulse Width(td) is defined
as the point where the peak
current decays to 50% of I
Figure 4 - AC Line Protection Application
PPM
100
75
50
Peak Power
(Single Pulse)
25
Percentage of Rated Power (%)
0
0255075 100 125 150 175
TL Lead Temperature (ºC)
Average Power
Half Value
I
PPM
I
PPM
( )
2
50
- Peak Pulse Current, % I
PPM
I
t
0
d
0
1.0 2.0 3.0 4.0
10/1000µsec. Waveform
as defined by R.E.A
t-Time (ms)
Figure 5 - Steady State Power Derating Curve
3.5
3
2.5
2
1.5
1
0.5
Steady State Power dissipation (W)
0
0255075100 125 150 175 200
T
-Lead Temperature (ºC)
L
Low Capacitance
Application Note: Device must be used with two
units in parallel, opposite in polarity as shown in
circuit for AC signal line protection.
Specifications are subject to change without notice.
© 2014 Littelfuse, Inc.
Revised: 01/24/14
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