This series will be End of Life (EOL) on December 31, 2017 and is not recommended for new designs. Replacement will be the SMBJ series.
The SMB 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 SMB series is supplied in Littelfuse's exclusive, cost-effective, highly reliable package and is ideally suited for use in communication systems, numerical controls, process controls, medical equipment, business machines, power supplies and many other industrial/consumer applications.
Feature
Standard Zener Breakdown Voltage Range - 6.4 to 200 V
Stand-off Voltage Range - 5 to 170 V
Peak Power - 600 Watts @ 1 ms
Maximum Clamp Voltage @ Peak Pulse Current
Low Leakage < 5 µA Above 10 V
UL Recognition
Response Time is Typically < 1 ns
CASE: Void-free, transfer-molded, thermosetting plastic
FINISH: All external surfaces are corrosion resistant and leads are readily solderable
POLARITY: Cathode indicated by molded polarity notch. When operated in zener mode, will be positive with respect to anode
MOUNTING POSITION: Any
LEADS: Modified L-Bend providing more contact area to bond pad
MAXIMUM CASE TEMPERATURE FOR SOLDERING PURPOSES: 260°C for 10 Seconds
WAFER FAB LOCATION: Phoenix, Arizona
ASSEMBLY/TEST LOCATION: Seremban, Malaysia
Pb-Free Packages are Available
SZ Prefix for Automotive and Other
Catalogue
FPGA / CPLD
Memory
MOS 
MCU 
DSP
OCEP
Secondary 
Other 
