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SG Series GDT Surge Arrester
SMD 1812 size


The SG Series GDT provides reliable protection from lightning-induced surges as well as ESD


The SG Series from Littelfuse is a series of square GDT devices in a standard 1812 footprint (4.5 x 3.2 x 2.7 mm) designed for printed circuit boards that require surface mount technology. It has a high current handling capability of 1,000 A at 8/20µs. It is ideal for applications where nearby lightning strikes may create damaging fast-rising transients in the 100 V/µs to 1 kV/µs range. This threat is especially common in telecom and communications equipment, certain types of test equipment, power supplies, and broadband equipment. The new GDT reliably protects against ESD as well. Datasheet Littelfuse SG Series GDT Surge Arrester SMD 1812 size

Features
  • Wide voltage range options, from 75 VDC to 420 VDC
  • Square outline; 1812 SMD size
  • Excellent response to fast-rising transients makes it ideal for high-speed broadband applications
  • Excellent stability on multiple-pulse duty cycle offers strong protection
  • Low capacitance (<1 pF) preserves signal integrity
  • UL Recognized, lead-free and RoHS compliant

Digi-Key P/N Manufacturer P/N Description
F4125CT-ND SG75 SURGE ARRESTER GDT 75V 2KA SMD
F4126CT-ND SG90 SURGE ARRESTER GDT 90V 2KA SMD
F4127CT-ND SG150 SURGE ARRESTER GDT 150V 2KA SMD
F4128CT-ND SG230 SURGE ARRESTER GDT 230V 1KA SMD
F4129CT-ND SG300 SURGE ARRESTER GDT 300V 1KA SMD
F4130CT-ND SG300Q SURGE ARRESTER GDT 300V QCK SMD
F4131CT-ND SG350 SURGE ARRESTER GDT 350V 1KA SMD
F4132CT-ND SG350Q SURGE ARRESTER GDT 350V QCK SMD
F4133CT-ND SG400 SURGE ARRESTER GDT 400V 1KA SMD
F4134CT-ND SG420 SURGE ARRESTER GDT 420V 1KA SMD
F4135CT-ND SG420Q SURGE ARRESTER GDT 420V QCK SMD
Available in Tape & Reel (TR-ND), Cut Tape (CT-ND), and custom Digi-Reel® (DKR-ND)