1.5SMC6.8AT3 Series
1500 Watt Peak Power
Zener Transient Voltage
Suppressors
Unidirectional*
http://onsemi.com
The SMC series is designed to protect voltage sensitive
components from high voltage, high energy transients. They have
excellent clamping capability, high surge capability, low zener
impedance and fast response time. The SMC series is supplied in
ON Semiconductor’s exclusive, cost-effective, highly reliable
Surmetic 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.
PLASTIC SURFACE MOUNT
ZENER OVERVOLTAGE
TRANSIENT SUPPRESSORS
5.8 − 78 VOLTS
1500 WATT PEAK POWER
Specification Features:
Cathode
Anode
• Working Peak Reverse Voltage Range − 5.8 to 77.8 V
• Standard Zener Breakdown Voltage Range − 6.8 to 91 V
• Peak Power − 1500 Watts @ 1.0 ms
• ESD Rating of Class 3 (>16 kV) per Human Body Model
• Maximum Clamp Voltage @ Peak Pulse Current
• Low Leakage < 5.0 mA Above 10 V
• UL 497B for Isolated Loop Circuit Protection
• Maximum Temperature Coefficient Specified
• Response Time is Typically < 1.0 ns
SMC
CASE 403
PLASTIC
MARKING DIAGRAM
• Pb−Free Packages are Available
YWW
xxxA
Mechanical Characteristics:
CASE: Void-free, transfer-molded, thermosetting plastic
FINISH: All external surfaces are corrosion resistant and leads are
readily solderable
MAXIMUM CASE TEMPERATURE FOR SOLDERING PURPOSES:
260°C for 10 Seconds
Y
WW
xxxA
= Year
= Work Week
= Specific Device Code
= (See Table on Page 3)
LEADS: Modified L−Bend providing more contact area to bond pads
POLARITY: Cathode indicated by molded polarity notch
MOUNTING POSITION: Any
ORDERING INFORMATION
†
Device**
Package
Shipping
1.5SMCxxxAT3
SMC
2500/Tape & Reel
2500/Tape & Reel
MAXIMUM RATINGS
1.5SMCxxxAT3G
SMC
(Pb−Free)
Please See the Table on the Following Page
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specifications
Brochure, BRD8011/D.
*Bidirectional devices will not be available in this se-
ries.
**The “T3” suffix refers to a 13 inch reel.
Individual devices are listed on page 3 of this data sheet.
Semiconductor Components Industries, LLC, 2004
1
Publication Order Number:
April, 2004 − Rev. 5
1.5SMC6.8AT3/D