SM8S-Q Transient Voltage Suppressor Diode SeriesPhysical SpecificationsTypical Part Marking Case ...Molded plastic per UL Class 94V-0 Polarity... Cathode band indicates unidirectional device No cathode band indicates bidirectional device PART MANUFACTURER’S How to Order NUMBER TRADEMARK SM8S 18 CA - QSM8SXXXYYWW DATE CODE: Package YY = LAST TWO DIGITS OF YEAR SM8S = DO-218 Package WW = WEEK NUMBER Working Peak Reverse Voltage CATHODE BAND 18 = 18 VRWM (Volts) Suffix A = 5 % Tolerance Unidirectional Device CA = 5 % Tolerance Bidirectional Device AEC-Q101 Suffix Q = AEC-Q101 Compliant Environmental Specifications Moisture Sensitivity Level ..1 ESD Classification (HBM)... 3B Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.