| Parameter | Value | |-----------|-------| | Input forward voltage | 1.2V (typ) | | Isolation voltage | 3750 Vrms | | CTR (Current Transfer Ratio) | 50–600% | | Output type | Phototransistor | | Operating temp | -40°C to +100°C | | Rise/fall time | 4 µs / 3 µs |

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If you intended a specific device, let me know and I will be glad to write a proper datasheet analysis.

The SN51DP uses a 10-pin layout to manage power, dimming, and feedback. Based on available technical schematics , the pin functions are generally as follows: Input Voltage. GATE: Output for driving the external MOSFET.