The FT02P features a standardized Gravity interface (PH2.0 connector) as well as standard header pins for flexibility.
Control Interface (Input):
Output Interface (High Voltage Side): Each relay channel has three screw terminals (K1 and K2): Ftd02p Datasheet
The core of any datasheet is the "Absolute Maximum Ratings" and "Electrical Characteristics" table. Below is a reconstruction of what you will find on the official Ftd02p specification sheet.
For low-power DC devices (12V to 48V, <1A), the Ftd02p acts as a blocking diode. The FT02P features a standardized Gravity interface (PH2
Circuit: Place the diode in series with the positive power input line. If the user reverses the battery terminals, the Ftd02p blocks current flow, saving the downstream circuitry. The 1V forward drop is a reasonable penalty for safety.
If you cannot find the Ftd02p, the datasheet recommends searching for "fast switching diode" with equivalent specs. Output Interface (High Voltage Side): Each relay channel
| Part Number | ( V_R ) | ( I_O ) | ( t_rr ) | Package | Compatibility | | :--- | :--- | :--- | :--- | :--- | :--- | | Ftd02p | 200V | 1A | 50ns | DO-41 | Reference | | 1N4148 | 100V | 0.2A | 4ns | DO-35 | No (Lower current/voltage) | | UF4002 | 100V | 1A | 50ns | DO-41 | Partial (Lower voltage) | | UF4003 | 200V | 1A | 50ns | DO-41 | Yes (Direct electrical equivalent) | | 1N4935 | 200V | 1A | 200-300ns | DO-41 | No (Slower - 200ns) | | MUR120 | 200V | 1A | 35ns | DO-41 | Yes (Slightly faster) |
Best Drop-in: UF4003 (Ultra-fast) or MUR120 (Hyperfast). The 1N400x series is not a substitute for high-frequency operation.