Automotive-qualified TVS diode arrays protect CAN lines

AEC-Q101-qualified TVS diode arrays from Littelfuse are optimised to protect automotive controller area network (CAN) lines from damage due to electrostatic discharges (ESDs), electrical fast transients (EFTs), and other over-voltage transients. 

The AQ24CANFD series TVS diode arrays can absorb repetitive ESD strikes above the maximum level specified in industry standards without performance degradation, says Littelfuse, and can safely withstand 3.0A surges at a very low clamping voltage.

Littelfuse uses the Production Part Approval Process (PPAP) to confirm the device supplier understands the design specifications and has a process capable of producing product to meet these requirements, at the quoted production rate. 

Automotive applications for the AQ24CANFD TVS diode arrays include protecting drive-by-wire (CAN BUS) lines, engine control modules, anti-lock brakes, air bag and other safety circuits, electronic control units (ECUs), body control units, ADAS control units and powertrain control units. They are also suitable for factory automation and lightning control (DALI) applications. 

The AQ24CANFD series TVS diode arrays offer enhanced ESD (21kV) and surge (3.0A) protection in excess of industry standards and low dynamic resistance of 0.5-Ohm RDYN), to provide for a 10 per cent reduction in clamping voltage when compared to similar market solutions, says Littelfuse. Another feature is the low capacitance (11.5pF typical) to preserve signal integrity and minimise data loss.

The AQ24CANFD TVS diode arrays are available in surface-mount SOT23-3 packaging in tape and reel format. Sample requests may be placed through authorised Littelfuse distributors worldwide.

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