Vishay IR sensor modules operate in direct sunlight without antennas
New Yorker Electronics has announced that it now stocks two of Vishay’s latest fixed-gain infrared (IR) sensor modules in Minimold packages.
The surface-mount TSSP93038DF1PZA and leaded TSSP93038SS1ZA are designed to lower costs and increase stability for outdoor sensor applications. They offer typical irradiance of 1.3mW/m² and provide robust operation in direct sunlight, while still providing enough sensitivity for light barrier applications, said the distributor.
Unlike high sensitivity fixed-gain IR sensor modules that require attenuators, for example dark panels, apertures and sunshades to protect them against sunlight, the controlled sensitivity of the Vishay Semiconductors’ devices allows them to operate in full sunlight without unwanted pulses. This saves additional costs but, for short range presence and proximity applications, the sensors’ reduced sensitivity eliminates the need for extremely low emitter forward currents, which can lead to unstable intensity outputs, said New Yorker Electronics.
The TSSP93038DF1PZA and TSSP93038SS1ZA have a fast reaction time of 260 micro4seconds and deliver long range proximity sensing (for example one metre in the case of the TSAL6100 at 100mA; with the same setup, a range of 11m is possible in light curtain applications, claimed the company).
The TSSP93038DF1PZA and TSSP93038SS1ZA operate over a supply voltage range from 2.0V to 3.6V, feature a low supply current of 0.35mA and are sensitive to a carrier frequency of 38kHz. Designed to receive IR pulses from an emitter with a peak wavelength of 940nm, they are insensitive to ripple noise on the supply voltage and provide shielding against EMI, while an IR filter suppresses visible light. The modules are RoHS-compliant, halogen-free and Vishay Green.
They can be used to sense the distance to objects for toys, drones, robots, and vicinity switches or for presence detection for traffic control lights and parking areas, gateway access and water level sensors. They can also be used in light barriers for sports racing and lawnmower robots or as reflective sensors for hand dryers, towel or soap dispensers, water taps (faucets), toilets, vending machine fall detection, and security and pet gates.
Samples and production quantities of the new sensors are available now from New Yorker Electronics, with lead times of six weeks.