Specs side by side
2 parts compared · 20 differing specs across 20 total parameters.
| Parameter | ||
|---|---|---|
| Voltage - Isolation | 5000Vrms | - |
| Operating temperature | -40°C ~ 100°C | - |
| Voltage - Forward (vf) | 1.15V | - |
| Voltage - Off State | 400 V | - |
| Case | 6-DIP (0.300\", 7.62mm) | DIP-6 |
| Package | Tube | - |
| Approvals | CQC, CSA, TUV, UL, VDE | - |
| Channels | 1 | - |
| Component Category | - | Optoisolators (Triac Driver Output) |
| Current - Dc Forward (if) | 50 mA | - |
| Current - Hold | 250µA (Typ) | - |
| Current - Led Trigger (ift) | 15mA | - |
| Market Reality | - | The MOC3021 is the little six-pin bridge between logic and mains in dimmers, speed controls, heater regulators and appliance boards: an LED driving a light-triggered triac, packaged with 7500V isolation. The family divides on two axes buyers conflate at their cost. Phase-control circuits (dimmers, motor speed) need the random-phase parts (MOC302x); on/off switching of resistive loads wants the zero-cross parts (MOC304x) so switching happens near the mains zero to tame inrush and EMI. And within each family, only the LED trigger current differs across the ladder (30 / 15 / 10 / 5mA from 3020 to 3023) - a substitution that ignores the trigger grade fails only on cold boards and marginal drive circuits. |
| Mounting | Through Hole | - |
| Output Type | Triac | - |
| Role In Circuit | - | Original Reference Part |
| Series | MOC302x | - |
| Sourcing Status | - | Active Shenzhen Spot Sourcing (24–48h) |
| Static Dv (dt) | 1kV/µs | - |
| Zero Crossing Circuit | No | - |