TLX9161T is aimed at electric vehicle batteries, and turns on or off in a maximum of 1ma.
Its characteristics are tuned for “modern automotive battery and fuel-cell control and battery management systems, which monitor voltage and detect mechanical relay sticking and ground faults”, said Toshiba. “These photorelays are also ideal for replacing traditional mechanical relays.”
Inside in an infra-red LED, optically coupled to a photovoltaic generator and a pair of back-to-back mosfets – allowing the device to switch ac loads. Isolation between input and output is 5kVrms.
A maximum of 3mA through the input is needed to turn the output on (30mA allowable).
The output can handle up to 30mA, and the output pair leaks less than 100nA when off.
Intended to block 1kVac as well as 1.5kVdc, the device is packaged in a 7.76 x 10 x 2.45mm SO12L-T, whose resin has a CTI (comparative tracking index) exceeding 600 (IEC60664-1 material group I), and achieves creepage and clearance distances of 8mm “confirming isolation operating from -40 to +125°C, making it fully compliant with AEC-Q101 Grade 1”, the company said.
“By reducing the size of the built-in mosfet chip, Toshiba has enabled the new photorelay to be housed in a SO12L-T package, which is approximately 25% smaller than the SO16L-T package used for its predecessor, the TLX9160T. Despite the smaller package, the TLX9161T maintains the same pin pitch and pin layout as the SO16L-T, allowing for common use of circuit board pattern designs.”
Find the TLX9161T photorelay on this Toshiba web page
Last month, the same company launched a 1.8kV photo-relay in a SO16 package