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MOC3042M

Public Made by Adom

by adom

onsemi Triac, SCR Output Optoisolators, DIP-6. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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MOC3042M

onsemi · Triac, SCR Output Optoisolators · DIP-6

MOC3042M from onsemi, in a DIP-6. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 ANODE passive Anode of the input GaAs infrared LED; continuous forward current is limited to 60 mA absolute maximum, with reverse voltage rated at 6 V.
2 CATHODE passive Cathode of the input GaAs infrared LED; reverse voltage is rated at 6 V, and the operating forward current should lie between the 10 mA max IFT of the MOC3042M and the 60 mA absolute maximum.
3 N/C unconnected Marked N/C on the pinout drawing, so it has no connection to the internal circuit.
4 MAIN TERM. passive Main terminal of the bilateral triac driver output; the MOC3042M off-state terminal voltage VDRM is 400 V and the peak repetitive on-state current is 100 mA.
5 NC* unconnected Marked *DO NOT CONNECT (TRIAC SUBSTRATE) on the pinout drawing, so it must be left unconnected.
6 MAIN TERM. passive Main terminal of the bilateral triac driver output; the MOC3042M off-state terminal voltage VDRM is 400 V and the peak repetitive on-state current is 100 mA.

Key specifications

Parameter Value
Manufacturer onsemi
Package DIP-6
Category Optoisolators
Pins 6

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Input Forward Voltage VF 1.25 1.5 V IF = 30 mA 3
Reverse Leakage Current IR 0.01 100 A VR = 6 V 3
Peak Blocking Current, Either Direction IDRM1 100 nA VDRM = 600 V, IF = 0 (Note 1) 3
Peak On-State Voltage, Either Direction VTM 1.8 3 V ITM = 100 mA peak, IF = 0 3
Critical Rate of Rise of Off-State Voltage dv/dt 1000 2000 V/s IF = 0 (Note 2) 3
LED Trigger Current (MOC3042M) IFT 10 mA Main Terminal Voltage = 3 V (Note 3) 3
Inhibit Voltage VIH 20 V IF = rated IFT, MT1-MT2 voltage above which device will not trigger off-state 3
Leakage in Inhibited State IDRM2 2 mA IF = rated IFT, rated VDRM off-state 3
Isolation Voltage VISO 4170 VACRMS t = 1 Minute 3
Storage Temperature TSTG -40 125 °C 2
Operating Temperature TOPR -40 85 °C 2
Junction Temperature Range TJ -40 100 °C 2
Lead Solder Temperature TSOL 260 °C for 10 seconds 2
Total Device Power Dissipation PD 250 mW at 25°C Ambient 2
Continuous Forward Current IF 60 mA 2
Reverse Voltage VR 6 V 2
Total Power Dissipation (emitter) PD 120 mW at 25°C Ambient 2
Off-State Output Terminal Voltage (MOC3041M/MOC3042M/MOC3043M) VDRM 400 V 2
Peak Non-Repetitive Surge Current ITSM 1 Apeak Surge Cycle 60 Hz Sine Wave 2
Peak Repetitive On-State Current ITM 100 mApeak 2
Total Power Dissipation (detector) PD 150 mW at 25°C Ambient 2

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
housing ABS RIO Insulation Resistance at TS, VIO = 500 V >109 ABSOLUTE MAXIMUM RATINGS (TA = 25°C unless otherwise noted) 2

CAD (KiCad official)

  • Symbol: MOC3042M
  • Footprint: Package_DIP:DIP-6_W7.62mm
  • 3D model: DIP-6 (KiCad packages3D, STEP)
  • 3D model files: moc3042m-etched.step / moc3042m-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); moc3042m.step / moc3042m.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: onsemi datasheet (12 pp, sha256 487bb754bcae2f84, retrieved 2026-10-16, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF