Transient Voltage Suppression Diodes
© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 09/13/13
Axial Leaded – 500W > SAC series
AGENCY AGENCY FILE NUMBER
E230531
The SAC 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,
VCC 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.1)
(Note 1)
PPPM 500 W
Steady State Power Dissipation on
Infinite Heat Sink at TL=75ºC (Fig. 5) PD3.0 W
Operating Junction and Storage
Temperature Range TJ, TSTG -55 to 150 °C
Note:
1. Non-repetitive current pulse , per Fig. 3 and derated above TA = 25°C per Fig. 2.
Maximum Ratings and Thermal Characteristics
(TA=25°C unless otherwise noted)
Agency Approvals
• 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
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
• High temperature
soldering guaranteed:
260°C/40 seconds /
0.375”,(9.5mm) lead
length, 5 lbs., (2.3kg)
tension
• Plastic package has
underwriters laboratory
ammability classication
94V-O
• Matte tin lead–free plated
• Ideal for data line
applications
• Halogen free and RoHS
compliant
Electrical Characteristics.(TA=25°C unless otherwise noted)
Part
Number
Reverse
Stand off
Voltage VR
(V)
Breakdown
Voltage VBR
(V)
Maximum
Reverse
Leakage
IR @ VR
(µA)
Maximum
Clamping
Voltage at
Ipp=5.0A
VC (V)
Maximum
Peak
Pulse
Current
(Fig.3)
IPP (A)
Maximum
Junction
Capacitance
@ 0 Volts
(pF)
Working
Inverse
Blocking
Voltage
VWIB (V)
Inverse
Blocking
Leakage
Current at
IIB @ VWIB
(mA)
Peak
Inverse
Blocking
Voltage
VPIB (V)
Agency
Approval
MIN
SAC5.0 5.0 7.60 300 10.0 44.0 50 75 1. 0 100 X
SAC6.0 6.0 7.90 300 11. 2 41.0 50 75 1. 0 100 X
SAC7.0 7. 0 8.33 300 12.6 38.0 50 75 1. 0 100 X
SAC8.0 8.0 8.89 10 0 13.4 36.0 50 75 1. 0 100 X
SAC8.5 8.5 9.44 50 14.0 34.0 50 75 1. 0 100 X
SAC10 10.0 11. 10 516.3 29.0 50 75 1. 0 10 0 X
SAC12 12.0 13.30 1 19.0 25.0 50 75 1. 0 10 0 X
SAC15 15.0 16.70 123.6 20.0 50 75 1. 0 100 X
SAC18 18.0 20.00 1 28.8 15.0 50 75 1. 0 100 X
SAC22 22.0 24.40 1 35.4 14.0 50 75 1. 0 10 0 X
SAC26 26.0 28.90 1 42.3 11. 1 50 75 1. 0 100 X
SAC30 30.0 33.30 1 48.6 10.0 50 75 1. 0 100 X
SAC36 36.0 40.00 1 60.0 8.6 50 75 1. 0 100 X
SAC45 45.0 50.00 1 77.0 6.8 50 150 1. 0 200 X
SAC50 50.0 55.50 1 88.0 5.8 50 150 1. 0 200 X
RoHS
SAC Series
Uni-directional
Transient Voltage Suppression Diodes
© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 09/13/13
Axial Leaded – 500W > SAC series
Ratings and Characteristic Curves (TA=25°C unless otherwise noted)
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.
Figure 4 - AC Line Protection Application
0.1
1
10
100
1000
0.000001 0.00001 0.0001 0.001
PPPM-Peak Pulse Power (kW)
td-Pulse Width (Sec.)
IPPM- Peak Pulse Current, % IRSM
0
0
50
100
150
1.0 2.0 3.0 4.0
tr=10µsec
Peak Value
IPPM
IPPM
2
TJ=25°C
Pulse Width(td) is defined
as the point where the peak
current decays to 50% of IPPM
10/1000µsec. Waveform
as defined by R.E.A
td
t-Time (ms)
Half Value
IPPM ( )
0
25
50
75
100
0255075 100 125 150 175
Percentage of Rated Power (%)
TL Lead Temperature (ºC)
Average Power
Peak Power
(Single Pulse)
0
0.5
1
1.5
2
2.5
3
3.5
0255075100 125 150 175 200
TL-Lead Temperature (ºC)
Steady State Power dissipation (W)
Figure 1 - Peak Pulse Power Rating Curve Figure 2 - Pulse Derating Curve
Figure 3 - Pulse Waveform
Figure 5 - Steady State Power Derating Curve
Transient Voltage Suppression Diodes
© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 09/13/13
Axial Leaded – 500W > SAC series
Physical Specifications
Weight 0.015oz., 0.4g
Case JEDEC DO-204AC (DO-15) molded
plastic body over passivated junction.
Polarity Color band denotes the cathode except
Bipolar.
Terminal Matte Tin axial leads, solderable per
JESD22-B102D.
Dimensions
Dimensions Inches Millimeters
Min Max Min Max
A1.000 - 25.40 -
B 0.230 0.300 5.80 7.60
C0.028 0.034 0.71 0.86
D 0.104 0.140 2.60 3.60
C
BA
A
D
DO-204AC (DO-15)
Cathode Band
DO-204AC (DO-15)
Soldering Parameters
Temperature (T)
Time (t)
Ts(min)
Ts(max)
TL
TP
ts
Preheat
tL
tp
Ramp-up Critical Zone
TL to TP
Ramp-down
t 25˚C to Peak
25˚C
Reflow Condition Lead–free assembly
Pre Heat
- Temperature Min (Ts(min))150°C
- Temperature Max (Ts(max))200°C
- Time (min to max) (ts)60 – 180 secs
Average ramp up rate (Liquidus Temp
(TL) to peak 3°C/second max
TS(max) to TL - Ramp-up Rate 3°C/second max
Reflow - Temperature (TL) (Liquidus) 217°C
- Time (min to max) (ts)60 – 150 seconds
Peak Temperature (TP)260+0/-5 °C
Time within 5°C of actual peak
Temperature (tp)20 – 40 seconds
Ramp-down Rate 6°C/second max
Time 25°C to peak Temperature (TP)8 minutes Max.
Do not exceed 280°C
Flow/Wave Soldering (Solder Dipping)
Peak Temperature : 265°C
Dipping Time : 10 seconds
Soldering : 1 time
Environmental Specifications
High Temp. Storage JESD22-A103
HTRB JESD22-A108
Thermal Shock JESD22-A106
H3TRB JESD22-A101
RSH JESD22-B106C
Transient Voltage Suppression Diodes
© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 09/13/13
Axial Leaded – 500W > SAC series
Part Numbering System
Packaging
Part Number Component Package Quantity Packaging Option Packaging Specification
SACxxxXX DO-204AC 4000 Tape & Reel EIA STD RS-296E
SACxxxXX-B DO-204AC 1000 BULK Littelfuse Concord Packing Spec. DM-0016
V
R
VOLTAGE CODE
(Refer to the Electrical Characteristics table)
OPTION CODE:
BLANK Reel Tape
-B Bulk Packaging
SERIES CODE
SAC xxx X
Part Marking System
SchematicTape and Reel Specification
2.062+/- 0.059
2.56
0.20+/-0.020
2.75
0.048
(330.2)
R
ecess Depth Max. 0.75 (19.05)
Off Center
either side
0.039(1.0)
Dimensions are in
inches/mm
0.25
(65.00)
(5.08+/- 0.508)
(52.37+/- 1.5)
(6.35)
(1.22)
(69.85)
13.0
(76.2)
3.0
0.68
(17. 27)
Direction of Feed
F
SACXXX
YYWW
Trace Code Marking
YY:Year Code
WW: Week Code
Product Type
Littelfuse Logo
Cathode Band
Transient
Voltage
Suppressor
Diode
Additional Information
Datasheet Samples
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