Part Numbering Vishay Siliconix PART NUMBERING NOMENCLATURE DGxy-T-RoHS DG = Analog Switch or Multiplexer Base Part Number (x) Base part number is either 3 or 4 digits. 3 digit base part number presents a High Voltage device (V+ > 5 V) that operate up to V+ = 44 V. For Example DG408. 4 digit base part numbers represent low voltage devices (V+ ≤ 5 V) and either start with the number “2” or “3”. For example: DG2735 or DG3535. 4 digit base part number starting with “9” represent “medium” voltage with a max V+ = 12 V and can operate down at V+ = 3 V. For example: DG9415. A letter may follow the base part number. For example: DG508B or DG4051A. The letter represents a “newer” revision of the device. Document Number: 65538 Revision: 01-Oct-09 Operating Temperature and Package Code (y) Represented by two letter characters. First letter specifies the rated operating temperature range. D = - 40 °C to + 85 °C E = - 40 °C to + 125 °C Second letter character identifies the package type. Y = SOIC (narrow body) W = SOIC (wide body) N = Leadless package (standard or miniQFN) B = MicroFOOT® (Chipscale) Q = TSSOP or MSOP Examples: DG3535DB DG2735DN DG611AEQ Shipping Method and RoHS Status “-T” represents that the devices are shipped in Tape and Reel. There are several options: -T1, -T3, or -T5. The absence of Tape & Reel option indicates that the devices are shipped in tubes. The final suffix to the part number is the RoHS designator. “-E” number indicates that the device is RoHS compliant. There are 3 “-E” numbers that represent the different lead-free finishes: - E1 = Tin/Silver/Copper - E3 = 100 % matte Tin - E4 = Nickel/Gold/Palladium Examples: DG408DY = part shipped in tubes/finish is tin-lead DG417BDY-T1 = part shipped in Tape and Reel/finish is tin-lead DG9411DL-T1-E3 = parts shipped in Tape and Reel/ lead-free finish www.vishay.com 1