TVS Diodes Surface Mount > 600W > SZ1SMB Series SZ1SMB Series Description The SZ1SMB series is designed to protect voltage sensitive components from high voltage, high energy transients. They have excellent clamping capability, high surge capability, and fast response time. The SZ1SMB series is supplied in the Littelfuse exclusive, cost-effective, highly reliable 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. Features Working Peak Reverse Voltage Range 5.0 V to 170 V for Maximum Ratings and Thermal Characteristics unidirectional, and 10 V to 75 V for bidirectional Standard Avalanche Breakdown Voltage Range Parameter Symbol Value Unit 6.7 V to 199 V for uni-directional, 11.7 V to 91.7 V for bi-directional Peak Power Dissipation (Note 1) T = L P 600 W PK 25C, Pulse Width = 1 ms Peak Power 600 W 1.0 ms DC Power Dissipation TL = 75C ESD Rating of Class 3 (> 16 kV) per Human Body Model PD W 3.0 Measured Zero Lead Length (Note 2) Maximum Clamp Voltage Peak Pulse Current Derate Above 75C 40 mW/C Thermal Resistance from Junctionto R JL 25 C/W Low Leakage < 5.0 A Above 10 V Lead Intended for UL 497B Type Protection 0.55 W DC Power Dissipation (Note 3) TA = Response Time is Typically < 1.0 ns P D 25C Derate Above 25C 4.4 mW/C Pb-free means 2nd level interconnect is Pb-free and the Thermal Resistance from Junctionto 226 C/W R terminal finish material is tin(Sn) Ambient JL (IPC/JEDEC J-STD-609A.01) SZ Prefix for Automotive and Other Applications Requiring Forward Surge Current (Note 4) TA I 100 A FSM = 25C Unique Site and Control Change Requirements AECQ101 Qualified and PPAP Capable Operating and Storage Temperature -65 to T T C J, stg Range +150 Additional Information Stresses exceeding those listed in the Maximum Ratings table may damage the componant. If any of these limits are exceeded, device functionality should not be assumed, damage may occur and reliability may be affected. 1. 10/1000 s, nonrepetitive. 2. 1 square copper pad, FR4 board. 3. FR4 board, using Littelfuse minimum recommended footprint, as shown in 403A-03 case outline dimensions spec. Datasheet Resources Samples 4. 1/2 sine wave (or equivalent square wave), PW = 8.3 ms, duty cycle = 4 pulses per minute maximum - For Unidirectional only. 2018 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 04/30/18TVS Diodes Surface Mount > 600W > SZ1SMB Series Functional Diagram I-V Curve Characteristics (T = 25C unless otherwise noted, V = 3.5 V Max. I (Note 5) = 30 A) (For Unidirectional) A F F Symbol Parameter I I Maximum Reverse Peak Pulse Current PP V Clamping Voltage I C PP V Working Peak Reverse Voltage RWM V I Maximum Reverse Leakage Current V R RWM V Breakdown Voltage I BR T I On-State Current T I Maximum Temperature Coefficient of V F BR Uni Directional TVS V Forward Voltage I F F 5. 1/2 sine wave (or equivalent square wave), PW = 8.3 ms, nonrepetitive duty cycle. I-V Curve Characteristics (T = 25C unless otherwise noted) For Bidirectional A Symbol Parameter I PP I Maximum Reverse Peak Pulse Current PP V Clamping Voltage I C PP I V Working Peak Reverse Voltage T RWM I V V V C BR RWM R I Maximum Reverse Leakage Current V I V V V R R RWM RWM BR C I T V Breakdown Voltage I BR T I On-State Current T I PP I Maximum Temperature Coefficient of V F BR V Forward Voltage I F F VF Forward Voltage I F 2018 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 04/30/18