Engineering Abbreviations
"A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M",
"N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z"

Sa to Sl, Sm to So, Sp to Ss, St to Sz

SMA - Sub-Miniature A [SMA connector definition]
SMB - SubMiniature B [50, 75 ohm Connector Style]
SMC - SubMiniature C [50, 75 ohm Connector Style]
SMD - Standard Microcircuit Drawing
SMD - Solder Mask Defined [PWB Definitions]
SMD - Surface Mount Device [SMD Sizes]
SMF - Standard MIDI File [MIDI Description]
SMIC - Server Management Interface Chip [SMIC Description]
SMDR - station message-detail recording
SMLP - Surface Mountable Leadless Package
SMOBC - Solder Mask Over Bare Copper
SMP - Surface Mounted Package [SMD Styles]
SMP - Switch Mode Pump
SMP - Symmetric-Multiprocessing
SMPS - Switched-Mode Power Supply [Power Supplies]
SMPTE - Society of Motion Picture and Television Engineers
SMS - System Management Software
SMSA - standard metropolitan statistical area
SMT - Surface Mount Technology
S/N - signal-to-noise
SNR - signal-to-noise ratio
SO - Small Outline
SOA - Safe Operating Area [SOA Definition]
SoC - System-On-Chip [SoC Vendors]
SOCDIMM - Small-Outline Clocked DIMM [DIMM Manufacturers]
SOD - Small Outline Diode [SOD-123 Description]
SOF - Start of Frame
SOH - start-of-heading character
SOI - Silicon-On-Insulator
SOIC - Small Outline Integrated Circuit, [SOIC Graphic] [SOIC]
SOJ - Small-Outline J-Lead [SOJ]
SOL - Serial Over LAN
SOM - start of message
sonar - sound navigation and ranging
SONET - synchronous optical network [SONET Description]
SONOS - Silicon-Oxide-Nitride-Oxide-Silicon
SOP - standard operating procedure
SOR - start of record
SORDIMM - Small-Outline Registered DIMM [DIMM Manufacturers]
SOS - Silicon on Sapphire
SOT - Small Outline Transistor [SOT-123 Description]
SOW - Statement of Work
(S+N)/N - signal-plus-noise-to-noise ratio

PC motherboard

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