TCST2103 footprint, schematic symbol and 3D model by Vishay

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TCST2103 Details

The recommended PCB layout for the TCST2103 involves placing the device close to the photodiode, using a ground plane to minimize noise, and keeping the traces as short as possible to reduce parasitic inductance.
To ensure proper biasing, connect the VCC pin to a stable 5V power supply, and the GND pin to a solid ground plane. The recommended bias resistor values are R1 = 1 kΩ and R2 = 2 kΩ.
The TCST2103 is rated for operation in ambient temperatures ranging from -40°C to +85°C. However, the device's performance may degrade at extreme temperatures.
While the TCST2103 is optimized for use with the SFH 203 photodiode, it can be used with other photodiodes. However, the device's performance may vary depending on the photodiode's characteristics.
To troubleshoot issues with the TCST2103, check the power supply voltage, ensure proper biasing, verify the photodiode connection, and inspect the PCB layout for noise and parasitic inductance.

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