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onsemi MOC3023SR2M — Optoisolators

MOC3023SR2M onsemi Optoisolator Triac 4170Vrms 6-SMD

MPNMOC3023SR2M
Active

onsemi MOC3023SR2M, 1-channel triac-output optoisolator, 4170 Vrms isolation, 400 V off-state, 5 mA max LED trigger current, non-zero-crossing, surface-mount 6-SMD gull wing package, -40°C to 85°C.

$0.7800Ref. price · indicative, final on quote
onsemi MOC3023SR2M datasheet (PDF)
Packaging6-SMD, Gull Wing
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

MOC3023SR2M specifications
ParameterValue
Output typeTriac
MountingSurface Mount
Voltage - isolation4170Vrms
Voltage - off state400 V
Voltage - forward (Vf)1.15V
Current - hold100µA (Typ)
Current - DC forward (If)60 mA
Current - LED trigger (Ift)5mA
Operating temperature-40°C ~ 85°C
Approval agencyUL
PackageTape & Reel (TR) Cut Tape (CT)
Case6-SMD, Gull Wing
Channels1
Zero crossing circuitNo

Product details

Triac driver for line-voltage loads without zero-cross delay

The MOC3023SR2M is a 1-channel triac-output optoisolator from onsemi with a 4170 Vrms isolation rating and a 400 V off-state voltage capability. The non-zero-crossing output means the internal triac fires immediately when the LED is pulsed — no wait for the next AC zero crossing. This makes it the right choice for phase-control dimming, random-turn-on switching, or any load where you need to start conducting mid-cycle.

LED drive margin and trigger current

A 3.3 V logic output driving through a 390 Ω series resistor delivers about 5.5 mA — enough to guarantee turn-on across temperature. The maximum continuous LED current is 60 mA, so there is headroom for higher drive if the MCU port can source it, but the 5 mA threshold is the design target.

The 6-SMD gull-wing package with surface-mount mounting keeps assembly compatible with standard reflow profiles.

Frequently asked questions

Is MOC3023SR2M compatible with 230 VAC loads?

Yes. The off-state voltage rating is 400 V, which comfortably exceeds the 325 V peak of a 230 VAC line. The 4170 Vrms isolation provides the safety barrier between the low-voltage control side and the mains side.

What is the difference between MOC3023 and MOC3022?

The primary difference is the LED trigger current (Ift) maximum: the MOC3023SR2M specifies 5 mA max, while the MOC3022SR2M specifies 10 mA max. The lower trigger current of the MOC3023 allows it to be driven by weaker logic outputs or higher-value series resistors.

What is the footprint of MOC3023SR2M?

The package is 6-SMD with gull-wing leads, supplier device package 6-SMD. The standard footprint matches a 6-pin DIP surface-mount pattern with 2.54 mm (0.100 inch) lead spacing. Confirm the land pattern against the onsemi datasheet for your specific PCB layout.