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onsemi FOD4218SV — Optoisolators
onsemi

FOD4218SV onsemi Optoisolator, Triac Output, 5 kVrms

MPNFOD4218SV
End of Life

onsemi FOD4218SV, single-channel triac-output optoisolator, 5000 Vrms isolation, 800 V off-state, 10 kV/µs dV/dt, 6-SMD gull-wing package, tube.

$5.84Ref. price · indicative, final on quote
FOD4218SV datasheet
Packaging6-SMD, Gull Wing
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
  • PayPal buyer protectionPay by T/T, PayPal or Payoneer — card payments covered end to end.

Specifications

FOD4218SV Technical Specifications
ParameterValue
Output typeTriac
Mounting typeSurface Mount
Voltage - isolation5000Vrms
Voltage - off state800 V
Voltage - forward (Vf)1.28V
Current - hold500µA
Current - DC forward (If)30 mA
Current - LED trigger (Ift)1.3mA
Operating temperature-55°C ~ 100°C
Approval agencycUL, FIMKO, UL, VDE
PackageTube
Turn on time60µs
Case6-SMD, Gull Wing
Number of channels1
Static dV (dt)10kV/µs
Zero crossing circuitNo

Product details

Triac-output isolator for line-voltage switching

The FOD4218SV is a single-channel optoisolator with a triac output from onsemi, rated for 5000 Vrms isolation and 800 V off-state voltage. It switches on in 60 µs typ and requires only 1.3 mA max LED trigger current, making it a direct fit for driving a triac or SCR in 240 VAC or 480 VAC loads without an external zero-cross circuit.

Transient immunity and temperature range

Static dV/dt is a minimum of 10 kV/µs, which means the output triac won't false-trigger from fast voltage spikes on a noisy mains line — a common failure in motor-drive and relay-replacement circuits. Operating temperature spans -55°C to 100°C, so it holds up in outdoor cabinet or industrial oven environments without derating.

Package, approvals, and compliance

Housed in a 6-SMD gull-wing package (supplier device package 6-SMD), shipped in tube. Carries cUL, FIMKO, UL, and VDE approvals, and is ROHS3 compliant.

Frequently asked questions

What is the difference between FOD4218 and FOD4218SV?

The FOD4218SV is the surface-mount gull-wing variant (6-SMD) of the through-hole FOD4218. Both share the same 5000 Vrms isolation, 800 V off-state, 10 kV/µs dV/dt, and triac output. The SV suffix indicates the SMD package in tube; the through-hole version comes in bulk.

Is the FOD4218SV RoHS compliant?

Yes, it is listed as ROHS3 compliant.