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onsemi MCT623SD — Optoisolators
onsemi

onsemi MCT623SD Optoisolator, 5kV Isolation, 2-Ch, 8-SMD

MPNMCT623SD
End of Life

onsemi MCT623SD dual-channel transistor output optocoupler, 5000Vrms isolation, 100% CTR min at 5mA, 30mA output per channel, 8-SMD gull wing package.

$1.58Ref. price · indicative, final on quote
MCT623SD datasheet
Packaging8-SMD, Gull Wing
StockContact for availability
Lead timeIn Stock wk
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

MCT623SD Technical Specifications
ParameterValue
Input typeDC
Output typeTransistor
Mounting typeSurface Mount
Voltage - isolation5000Vrms
Voltage - output30V
Voltage - forward (Vf)1.2V
Current - output (Channel)30mA
Current transfer ratio100% @ 5mA
Current - DC forward (If)60 mA
Operating temperature-55°C ~ 100°C
PackageTape & Reel (TR); Cut Tape (CT)
Case8-SMD, Gull Wing
Number of channels2
Vce saturation400mV
Turn on (Turn off time)2.4µs, 2.4µs

Product details

Dual-channel isolation for mixed-voltage signal paths

The MCT623SD: Each channel drives up to 30mA at 30V on the output side, with a guaranteed minimum current transfer ratio of 100% at 5mA forward current — so a 5mA logic-level input signal reliably saturates the output transistor.

Switching speed and temperature range for industrial control

Typical turn-on and turn-off times are both 2.4µs, giving a practical data rate around 200 kbps for isolated digital signals like PLC digital inputs, encoder pulses, or relay drivers. The -55°C to 100°C operating range covers industrial enclosures and outdoor telecom cabinets, with the 400mV max Vce saturation keeping power dissipation low across temperature.

Supplied in tape and reel or cut tape options, it is ready for high-volume pick-and-place assembly on standard 8-SMD gull wing footprints.

Frequently asked questions

Will MCT623SD drop into a board designed for 4N25SR2M without rewiring?

No. The 4N25SR2M is a single-channel device in a 6-pin package, while the MCT623SD is a dual-channel part in an 8-SMD gull wing. The pinout and footprint differ — a board spin is required.