Manufacturer Part Number
1812L110/33MR
Manufacturer
Littelfuse
Introduction
Circuit Protection PTC Resettable Fuse
Product Features and Performance
Polymeric PTC resettable fuse
Surface Mount, 1812 (4532 Metric), Concave package
Operational Voltage up to 33V
Hold current (Ih) maximum of 1.1 A
Trip current (It) at 1.95 A
Maximum current withstand of 20 A
Time to trip is 500 ms
Initial resistance (Ri) minimum of 60 mOhms
Post-trip resistance (R1) maximum of 200 mOhms
Product Advantages
Self-resetting upon fault condition rectification
Compact 1812 footprint for space-sensitive applications
Allows for high current throughput up to 20 A
Compatible with high-volume electronics assembly
Key Technical Parameters
Voltage - Max: 33V
Current - Hold (Ih) (Max): 1.1 A
Current - Trip (It): 1.95 A
Current - Max: 20 A
Time to Trip: 500 ms
Resistance - Initial (Ri) (Min): 60 mOhms
Resistance - Post Trip (R1) (Max): 200 mOhms
Operating Temperature: -40°C ~ 85°C
Quality and Safety Features
cURus and TUV approved
Suitable for operation in a wide temperature range (-40°C to 85°C)
Compatibility
Tape & Reel (TR) packaging for automated assembly
Compatible with surface mount technology
Application Areas
Consumer electronics
Telecommunications
Computers and peripherals
Industrial control systems
Product Lifecycle
Active product status
Not nearing discontinuation
Availability of replacements or upgrades ensured
Several Key Reasons to Choose This Product
Reliable overcurrent protection for sensitive electronics
Reduces warranty costs and field service by preventing device failure
Quick response time ensures device safety under fault conditions
Robust design supporting a wide range of applications
Industry-standard certifications ensure compliance with safety regulations
Easy integration into existing designs due to standard SMT packaging and size
1812L125DRHFHamlin / Littelfuse