|1SMA10CAT3 Series 400 Watt Peak Power Zener Transient Voltage Suppressors
The SMA 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 SMA series is supplied in ON Semiconductor's exclusive, cost-effective, highly reliable SurmeticTM 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 1078 VOLTS VR 400 WATTS PEAK POWER
Working Peak Reverse Voltage Range 78 V Standard Zener Breakdown Voltage Range 91.3 V Peak Power 400 Watts 1 ms ESD Rating of Class 3 16 kV) per Human Body Model Response Time is Typically 1 ns Flat Handling Surface for Accurate Placement Package Design for Top Slide or Bottom Circuit Board Mounting Low Profile Package
Mechanical Characteristics: CASE: Void-free, transfer-molded plastic FINISH: All external surfaces are corrosion resistant and leads are
POLARITY: Cathode polarity notch does not indicate polarity MOUNTING POSITION: Any MAXIMUM RATINGS
Rating Peak Power Dissipation (Note = 25°C, Pulse Width ms DC Power Dissipation = 75°C Measured Zero Lead Length (Note 2) Derate Above 75°C Thermal Resistance from Junction to Lead DC Power Dissipation (Note = 25°C Derate Above 25°C Thermal Resistance from Junction to Ambient Operating and Storage Temperature Range Symbol PPK PD Value to +150 Unit W mW/°C °C/W W mW/°C °C/W °C xxC Y WW
= Specific Device Code = (See Table Next Page) = Assembly Location = Year = Work Week
X 1000 ms, nonrepetitive 2. 1 square copper pad, FR4 board 3. FR4 board, using ON Semiconductor minimum recommended footprint, as shown in 403B case outline dimensions spec. *Please see to 1SMA78AT3 for Unidirectional devices.
(TA = 25°C unless otherwise noted) Symbol IPP VC VRWM IR VBR IT Parameter Maximum Reverse Peak Pulse Current Clamping Voltage @ IPP Working Peak Reverse Voltage Maximum Reverse Leakage Current @ VRWM Breakdown Voltage @ IT Test Current IPP IT VC VBR VRWM IR VRWM VBR IT V IPP I
4. A transient suppressor is normally selected according to the working peak reverse voltage (VRWM), which should be equal to or greater than the DC or continuous peak operating voltage level 5. VBR measured at pulse test current at an ambient temperature 25°C 6. Surge current waveform per Figure 2 and derate per Figure 3
100 Ippm, PEAK PULSE CURRENT NONREPETITIVE PULSE WAVEFORM SHOWN IN FIGURE 2 t, TIME (ms) 4 5 PEAK VALUE Ippm
25°C PW (ID) IS DEFINED AS THE POINT WHERE THE PEAK CURRENT DECAYS 50% OF Ipp.
120 PEAK PULSE DERATING % OF PEAK POWER OR CURRENT x 1000 WAVEFORM AS DEFINED BY R.E.A.