SMA4F5.0A-TR STMicroelectronics

SMA4F High junction temperature Transil Features ECOPACK2 halogen-free component Peak pulse power: 400 W (10/1000 s) A 3 kW (8/20 s) Stand off voltage: 5 V Unidirectional type K Low clamping voltage versus standard series Unidirectional Low leakage current, 10 A at 25 C SMAflat Operating T max: 175 C j JEDEC registered package outline Complies with the following standards IEC 61000-4-2 level 4: 15 kV (air discharge) 8 kV (contact discharge) Description MIL STD 883G-Method 3015-7: class3B The SMA4F Transil series has been designed to 25 kV (human body model) protect sensitive equipment against electrostatic discharges according to IEC 61000-4-2, MIL STD 883 Method 3015, and electrical over stress such as IEC 61000-4-4 and 5. They are generally for surges below 400 W 10/1000 s. This planar technology makes it compatible with high-end equipment and SMPS where low leakage current and high junction temperature are required to provide reliability and stability over time. Their low clamping voltages provides a better safety margin to protect sensitive circuits with extended life time expectancy. Packaged in SMAflat non exposed pad, this minimizes PCB space consumption (footprint in accordance with IPC 7531 standard). TM: Transil is a trademark of STMicroelectronics September 2008 Rev 1 1/9 www.st.com 9Characteristics SMA4F 1 Characteristics Table 1. Absolute ratings (T = 25 C) amb Symbol Parameter Value Unit (1) P Peak pulse power dissipation T initial = T 400 W PP j amb Non repetitive surge peak forward current for t = 10 ms p I 40 A FSM unidirectional types T initial = T j amb T Storage temperature range -65 to +175 C stg T Operating junction temperature range -55 to +175 C j T Maximum lead temperature for soldering during 10 s 260 C L 1. For a surge greater than the maximum values, the diode will fail in short-circuit. Table 2. Thermal resistance Symbol Parameter Value Unit R Junction to leads 20 C/W th (j-l) Table 3. Electrical characteristics - definitions (T = 25 C) amb Symbol Parameter II V Stand-off voltage RM II FF V Breakdown voltage BR V Clamping voltage CL VV VV VV VV FF CLCL BRBR RMRM VV I Leakage current V RM RM II RMRM II I Peak pulse current RR PP T Voltage temperature coefficient II PPPP V Forward voltage drop F R Dynamic resistance D 2/9