SFH506-30

The Siemens SFH506-30 is an infrared (IR) receiver and demodulator device designed for use in remote control systems for consumer electronics. It integrates a photodiode with an IC to provide high sensitivity and noise immunity.

The device operates with a minimum supply voltage of 5V and offers a detection range of up to 35 meters. It is specifically designed to respond only to pulsed IR signals, with a pulse/period ratio of less than 0.4, ensuring it does not react to continuous background light. The integrated circuit includes automatic gain control and signal conditioning to output TTL and CMOS compatible levels.

The housing of the SFH506-30 is made of black plastic, which acts as a high-transparency filter for IR radiation at a wavelength of 950 nm. This construction provides protection against external light sources in other spectral bands. Various carrier frequencies are available for different modifications, enhancing resistance to interference outside the specified frequency range. This particular model, SFH506-30, operates at a carrier frequency of 30 kHz.

With its robust design and specific filtering capabilities, the SFH506-30 is suitable for applications requiring reliable IR signal reception in environments with potential light interference.