P6SMB6.8AT3G Series,
SZP6SMB6.8AT3G Series
600 Watt Peak Power Zener
Transient Voltage
Littelfuse.com
Suppressors
Unidirectional*
PLASTIC SURFACE MOUNT
The SMB series is designed to protect voltage sensitive
ZENER OVERVOLTAGE
components from high voltage, high energy transients. They have
TRANSIENT SUPPRESSORS
excellent clamping capability, high surge capability, low zener
5.8171 VOLTS
impedance and fast response time. The SMB series is supplied in
the Littelfuse exclusive, cost-effective, highly reliable
600 WATT PEAK POWER
package and is ideally suited for use in communication
systems, automotive, numerical controls, process controls,
medical equipment, business machines, power supplies and many
other industrial/consumer applications.
SMB
CASE 403A
Specification Features:
PLASTIC
Working Peak Reverse Voltage Range 5.8 to 171 V
Standard Zener Breakdown Voltage Range 6.8 to 200 V
Cathode Anode
Peak Power 600 W @ 1 ms
ESD Rating of Class 3 (> 16 kV) per Human Body Model
MARKING DIAGRAM
Maximum Clamp Voltage @ Peak Pulse Current
Low Leakage < 5 A Above 10 V
UL 497B for Isolated Loop Circuit Protection
AYWW
Response Time is Typically < 1 ns
xx
SZ Prefix for Automotive and Other Applications Requiring Unique
Site and Control Change Requirements; AECQ101 Qualified and
PPAP Capable
These Devices are PbFree and are RoHS Compliant
A = Assembly Location
Y = Year
Mechanical Characteristics:
WW = Work Week
xx = Device Code (Refer to page 3)
CASE: Void-free, transfer-molded, thermosetting plastic
= PbFree Package
FINISH: All external surfaces are corrosion resistant and leads are
(Note: Microdot may be in either location)
readily solderable
MAXIMUM CASE TEMPERATURE FOR SOLDERING PURPOSES:
260C for 10 Seconds
ORDERING INFORMATION
LEADS: Modified LBend providing more contact area to bond pads
Device Package Shipping
POLARITY: Cathode indicated by polarity band
P6SMBxxxAT3G SMB 2,500 /
MOUNTING POSITION: Any
(PbFree) Tape & Reel
SZP6SMBxxxAT3G SMB 2,500 /
(PbFree) Tape & Reel
*Please see P6SMB11CAT3 to P6SMB91CAT3 for Bidirectional devices.
Specifications subject to change without notice. 2016 Littelfuse, Inc. 1 Publication Order Number:
September 19, 2016 Rev. 14 P6SMB6.8AT3/DP6SMB6.8AT3G Series, SZP6SMB6.8AT3G Series
MAXIMUM RATINGS
Rating Symbol Value Unit
Peak Power Dissipation (Note 1) @ T = 25C, Pulse Width = 1 ms P 600 W
L PK
DC Power Dissipation @ T = 75C Measured Zero Lead Length (Note 2) P 3.0 W
L D
Derate Above 75C 40 mW/C
Thermal Resistance from JunctiontoLead R 25 C/W
JL
DC Power Dissipation (Note 3) @ T = 25C P 0.55 W
A D
Derate Above 25C 4.4 mW/C
Thermal Resistance from JunctiontoAmbient R 226 C/W
JA
Forward Surge Current (Note 4) @ T = 25C I 100 A
A FSM
Operating and Storage Temperature Range T , T 65 to +150 C
J stg
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality
should not be assumed, damage may occur and reliability may be affected.
1. 10 X 1000 s, nonrepetitive
2. 1 square copper pad, FR4 board
3. FR4 board, using Littelfuse minimum recommended footprint, as shown in 403A case outline dimensions spec.
4. 1/2 sine wave (or equivalent square wave), PW = 8.3 ms, duty cycle = 4 pulses per minute maximum.
ELECTRICAL CHARACTERISTICS
(T = 25C unless otherwise noted, V = 3.5 V Max. @ I
A F F
(Note 4) = 30 A, V = 1.3 V Max. @ I (Note 4) = 3 A) (Note 5)
F F
I
Symbol Parameter
I
I Maximum Reverse Peak Pulse Current
F
PP
V Clamping Voltage @ I
C PP
V Working Peak Reverse Voltage
RWM
I Maximum Reverse Leakage Current @ V
R RWM
V V V
C BR RWM
V
V Breakdown Voltage @ I I
BR T V
R F
I
T
I Test Current
T
Maximum Temperature Coefficient of V
V
BR BR
I Forward Current
F
I
PP
V Forward Voltage @ I
F F
5. 1/2 sine wave or equivalent, PW = 8.3 ms, nonrepetitive
UniDirectional TVS
duty cycle
Specifications subject to change without notice. 2016 Littelfuse, Inc. 2 Publication Order Number:
September 19, 2016 Rev. 14 P6SMB6.8AT3/D