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Vishay IL4208-X009T — Optoisolators
Vishay

IL4208-X009T Vishay Optotriac – 5300 Vrms, 800 V Off-State

MPNIL4208-X009T
End of Life

Vishay IL4208-X009T, single-channel Triac output optoisolator, 5300 Vrms isolation, 800 V off-state, 10 kV/µs minimum static dV/dt, 35 µs turn-on, 6-SMD surface-mount package, -55°C to 100°C, ROHS3 compliant, Active.

$4.05Ref. price · indicative, final on quote
IL4208-X009T datasheet
Packaging6-SMD
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

IL4208-X009T Technical Specifications
ParameterValue
Output typeTriac
Mounting typeSurface Mount
Voltage - isolation5300Vrms
Voltage - off state800 V
Voltage - forward (Vf)1.16V
Current - hold500µA
Current - DC forward (If)60 mA
Current - LED trigger (Ift)2mA
Current - on state (It (RMS))300 mA
Operating temperature-55°C ~ 100°C
Approval agencyCQC, CSA, cUR, UR
PackageTape & Reel (TR); Cut Tape (CT)
Turn on time35µs
Case6-SMD
Number of channels1
Static dV (dt)10kV/µs
Zero crossing circuitNo

Product details

What this Triac output optoisolator does on the board

The IL4208-X009T is a single-channel Triac output optoisolator from Vishay. It switches AC loads up to 300 mA RMS at off-state voltages up to 800 V, with 5300 Vrms isolation between the LED input and the Triac output. The 10 kV/µs minimum static dV/dt means the output Triac stays off when the AC line commutates — no false triggering on inductive loads like motors, solenoids, or transformers. No zero-crossing circuit — the Triac fires as soon as the LED current exceeds the 2 mA maximum trigger current. This gives you phase-angle control for dimmers or soft-start, but the turn-on edge lands anywhere on the AC sine wave.

Parametric fit for AC switching designs

Forward voltage (Vf) is 1.16 V typical at 60 mA max DC forward current. The 500 µA holding current keeps the Triac latched once triggered — below that the output drops out at the AC zero-cross. 35 µs turn-on time is fast enough for 50/60 Hz line switching; the Triac output commutates at the next zero-cross after the LED current drops below Ih. Operating temperature range -55°C to 100°C covers industrial cabinet and outdoor telecom enclosures. The 6-SMD package with surface-mount footprint suits automated assembly; the Tape & Reel option feeds pick-and-place.

Lifecycle and supply posture

Approvals include CQC, CSA, cUR, UR — the CSA/cUR marks cover North American panel equipment; CQC covers China CCC market access. Sourced per RFQ against your BOM quantity.

Frequently asked questions

How can I order the IL4208-X009T or check stock?

The IL4208-X009T is an Active Vishay part. Submit an RFQ with your target quantity and delivery window; we source against the BOM line and confirm availability and price at quote time. No stock-holding claim is made here.

Is the IL4208-X009T zero-crossing?

No — the IL4208-X009T has no zero-crossing circuit. The Triac output fires immediately when the LED current exceeds the 2 mA maximum trigger current. Use a zero-crossing variant (e.g., IL4208-X009) if you need the output to switch only near the AC zero-cross.

What is the closest pin-compatible alternative to the IL4208-X009T?

Within the same Vishay family, the IL4208-X009 (non-tape) shares the same die and ratings — 5300 Vrms, 800 V off-state, 10 kV/µs dV/dt — but ships in tube or bulk rather than Tape & Reel. Confirm the package code suffix matches your assembly line.