AOS Semiconductor Product Reliability Report AOZ8131DI-05L, rev A Plastic Encapsulated Device ALPHA & OMEGA Semiconductor, Inc 495 Mercury Drive Sunnyvale, CA 94085 U.S. Tel: (408) 830-9742 1 www.aosmd.com This AOS product reliability report summarizes the qualification result for AOZ8131DI-05L. Review of the electrical test results confirm that AOZ8131DI-05L pass AOS quality and reliability requirements for product release. The continuous qualification testing and reliability monitoring program ensure that all outgoing products will continue to meet AOS quality and reliability standards. Table of Contents: I. II. III. IV. V. Product Description Package and Die information Qualification Test Requirements Qualification Tests Result Reliability Evaluation I. Product Description: The AOZ8131-05L is an ultra low capacitance one-line bi-directional transient voltage suppressor diode designed to protect high speed data lines and voltage sensitive electronics from high transient conditions and ESD. . Absolute Maximum Ratings Parameter VP-VN 5v Peak Pulse Current (Ipp), tp=8/20uS 4A Storage Temperature (TS) -65°C to +150°C (1) ESD Rating per IEC61000-4-2, contact ±24kV (2) ESD Rating per IEC61000-4-2, air ±24kV (2) ESD Rating per Human Body Model ±30kV Junction Temperature (Tj) -40°C to +85°C Notes: (1) IEC-61000-4-2 discharge with CDischarge=150pF, RDischarge=330Ω (2) Human Body Discharge per MIL-STD-883, Method 3015 CDischarge=100pF, RDischarge=1.5kΩ II. Package and Die Information: Product ID Process Package Type Lead Frame Die attach material Die bond wire Mold Material MSL level AOZ8131DI-05L HHNEC HV016A1 DFN 1.0x0.6 Cu, S/Pad, Ag spot QMI519 Au, 0.8 mil G770HCD Up to Level 1 2 III. Qualification Tests Requirements • • 2 lots of AOZ8131DI-05L up to 500 hrs of HTOL for New Product release. 3 lots of package qual testing (PCT, 500 cycles TC, HAST) for package release to manufacturing. IV. Qualification Tests Result Test Item Test Condition Sample Size Result PreConditioning Per JESD 22-A113 168hrs @85 °C /85%RH+3 cyc reflow@260°C 3 lots pass HTOL Per JESD 22-A108_B Vdd= 5v Temp = 125°C 2 lots (80 /lot) pass Temperature Cycle '-65 °C to +150 °C, air to air (2cyc/hr) 3 lots (82 /lot) pass Pressure Pot 121°C, 29.7psi, RH= 100% 3 lots (82 /lot) pass HAST '130 +/- 2°C, 85%RH, 33.3 psi, at VCC min power dissipation. 3 lots (60 /lot) pass Comment ESD Rating Per IEC-61000-4-2, contact 3 lots (5 /lot) pass ±24kV contact ESD Rating Per IEC-61000-4-2, air discharge 3 lots (5 /lot) pass ±24kV contact Lightning Surge rating Per IEC-61000-4-5 3 lots (5 /lot) pass 4A surge The qualification test results confirm that AOZ8131DI-05L pass AOS quality and reliability requirements for product release. 3 V. Reliability Evaluation FIT rate (per billion): 44 MTTF = 2575 years The presentation of FIT rate for the individual product reliability is restricted by the actual burn-in sample size of the selected product. Failure Rate Determination is based on JEDEC Standard JESD 85. FIT means one failure per billion device hours. 2 9 Failure Rate = Chi x 10 / [2 (N) (H) (Af)] = 1.83 x 10 9 7 MTTF = 10 / FIT =2.26 x10 hrs= 2575 years 9 / [2x2x80x500x258] = 44 Chi² = Chi Squared Distribution, determined by the number of failures and confidence interval N = Total Number of units from HTRB and HTGB tests H = Duration of HTRB/HTGB testing Af = Acceleration Factor from Test to Use Conditions (Ea = 0.7eV and Tuse = 55°C) Acceleration Factor [Af] = Exp [Ea / k (1/Tj u – 1/Tj s)] Acceleration Factor ratio list: Af 55 deg C 70 deg C 85 deg C 100 deg C 115 deg C 130 deg C 150 deg C 258 87 32 13 5.64 2.59 1 Tj s = Stressed junction temperature in degree (Kelvin), K = C+273.16 Tj u =The use junction temperature in degree (Kelvin), K = C+273.16 k = Boltzmann’s constant, 8.617164 X 10-5eV / K 4