SQJA81EP www.vishay.com Vishay Siliconix THERMAL RATINGS (TC = 25 °C, unless otherwise noted) Axis Title 10000 1 Duty cycle = 0.5 Notes 1000 0.2 pedance PDM ne ne m 0.1 l I 0.1 1st li a 2nd li t1 0.05 t erm 2 100 h t1 T 1. Duty cycle, D = t2 0.02 2. Per unit base = R = 68 °C/W thJA (t) Single pulse 3. T - T = P Z JM A DM thJA 4. Surface mounted 0.01 10 0.0001 0.001 0.01 0.1 1 10 100 1000 Square Wave Pulse Duration (s) Normalized Thermal Transient Impedance, Junction-to-Ambient Axis Title 10000 1 Duty cycle = 0.5 ent ransi 1000 T 0.2 e v pedance 0.1 ne ne m ffecti l I 0.1 1st li a 2nd li ed E erm 0.05 100 iz h al T 0.02 Single pulse Norm 0.01 10 0.0001 0.001 0.01 0.1 1 10 Square Wave Pulse Duration (s) Normalized Thermal Transient Impedance, Junction-to-CaseNote • The characteristics shown in the two graphs - Normalized Transient Thermal Impedance Junction-to-Ambient (25 °C) - Normalized Transient Thermal Impedance Junction-to-Case (25 °C) are given for general guidelines only to enable the user to get a “ball park” indication of part capabilities. The data are extracted from single pulse transient thermal impedance characteristics which are developed from empirical measurements. The latter is valid for the part mounted on printed circuit board - FR4, size 1" x 1" x 0.062", double sided with 2 oz. copper, 100 % on both sides. The part capabilities can widely vary depending on actual application parameters and operating conditions Vishay Siliconix maintains worldwide manufacturing capability. Products may be manufactured at one of several qualified locations. Reliability data for Silicon Technology and Package Reliability represent a composite of all qualified locations. For related documents such as package / tape drawings, part marking, and reliability data, see www.vishay.com/ppg?77266. S20-0012-Rev. A, 27-Jan-2020 5 Document Number: 77266 For technical questions, contact: automostechsupport@vishay.com THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
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