Smoke & Heat Detectors

Wired smoke detectors and heat alarms require dependable ac power supplies, highly efficient dc–dc converters, and accurate temperature sensors. Littelfuse provides all of these electronic components, as well as a range of fuses for overcurrent protection and metal oxide varistors and TVS diodes for overvoltage protection.

Block Diagram

Technology:
Product Series:875, 263, 392
Features:Third-party compliance (UL/IEC); low internal resistance; shock safe; vibration resistant
Benefits:Reduces customer qualification time by complying with regulatory safety standards such as UL/IEC

Technology:
Product Series:SMCJ
Features:1500 W peak pulse capability; low, dynamic resistance; 0402 footprint
Benefits:Improves system reliability by clamping the voltage at safe levels during transients

Technology:
Product Series:HE3600
Features:Miniature single in-line package; external magnetic shield option
Benefits:Low power consumption; high isolation; immune to environmental effects

Technology:
Product Series:
Features:High reliability; small form factor; fast thermal response
Benefits:Provides accurate temperature (component / ambient) for enabling safe device operation

Technology:
Product Series:
Features:Ultra-low current consumption; operating life up to 1M cycles; most devices are IEC 60068-2-42:2003 qualified
Benefits:Available in wide range of operating forces; rugged sealing and resistant to corrosion; very long operating life

Smoke & Heat Detectors Resources