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onsemi FOD4208SV — Optoisolators
onsemi

FOD4208SV 5000 Vrms, 800 V Off-State, 10 kV/µs

MPNFOD4208SV
End of Life

onsemi FOD4208SV, single-channel optoisolated triac driver, 5000 Vrms isolation, 800 V off-state voltage, 10 kV/µs minimum static dV/dt, non-zero-cross output, 6-SMD gull-wing package, tube.

$4.2Ref. price · indicative, final on quote
FOD4208SV 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

FOD4208SV 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)2mA
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

Isolation barrier and load voltage envelope

The FOD4208SV provides 5000 Vrms isolation between the LED input and the triac output, certified by cUL, FIMKO, UL, and VDE. The off-state voltage is rated at 800 V.

Non-zero-cross switching and LED drive

Unlike zero-cross optotriacs, the FOD4208SV fires the triac immediately when the LED current exceeds the 2 mA maximum trigger current, with a typical turn-on time of 60 µs.

Package, temperature range, and procurement posture

The FOD4208SV is supplied in a 6-SMD gull-wing package, shipped in tube. Sourcing is through normal distribution; the tube quantity and surface-mount footprint are standard for pick-and-place assembly. Request a quote against your BOM line for current pricing and lead time.

Frequently asked questions

Does FOD4208SV have a zero-crossing circuit?

No — the FOD4208SV has no zero-crossing circuit. The triac fires immediately when the LED current exceeds the 2 mA trigger threshold, enabling random-turn-on or phase-angle switching.

Can FOD4208SV be used with a 5V microcontroller?

Yes. The LED forward voltage is 1.28 V typical, so a 5 V GPIO can drive it through a series resistor. The maximum continuous LED current is 30 mA, and the trigger current is 2 mA maximum — a 270 Ω resistor from a 5 V output will provide roughly 14 mA, well within both limits.