| Symptom | Likely Cause (per datasheet limits) | Fix | | :--- | :--- | :--- | | Short circuit (0 ohms both ways) | Exceeded ( I_FSM ) 30A surge. Die melted. | Replace with higher current diode (e.g., 3A). | | Low reverse resistance (ohmmeter) | Exceeded ( V_RRM ) 200V. Avalanche breakdown. | Upgrade to 400V or 600V part (e.g., UF4004). | | Overheating at 0.5A load | Counterfeit / Slow diode. Actual ( t_rr ) is 2µs, not 50ns. | Purchase from authorized distributor only. | | Noise in audio circuit | Junction capacitance modulating with voltage. | Add an RC snubber (10Ω+1nF) in parallel. |
Download the latest revision. I've seen older FTD02P datasheets floating around with outdated thermal impedance models. Ftd02p Datasheet
Here’s an interesting, story-driven post about the —turning a technical document into an intriguing find. | Symptom | Likely Cause (per datasheet limits)
If your device has failed, it is standard practice to replace both the FTD02P and the FTD01N simultaneously to ensure balanced circuit performance. | | Low reverse resistance (ohmmeter) | Exceeded