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Nano 2 Fuses

NANO2® fuses provide overcurrent and short circuit protection in battery chargers, electronic ballast, ac–dc and dc–dc power converters, and telecommunications equipment. Littelfuse makes very fast-acting and time-delayed/Slo-Blo^® versions of NANO2 fuses. All the surface mount fuses boast miniature or subminiature square footprints that save space on printed circuit boards.

Rated from 32 V ac to 600 V ac
Available with a wide range of ampere ratings, from 375 mA to 100 A
Very low internal resistance ratings (e.g., 40 mΩ, 180 mΩ)
UL Recognized
Certified halogen-free and RoHS compliant

AEC-Q200–qualified devices available for automotive applications
Well-suited for use in high-temperature environments
Compatible with lead-free reflow soldering processes

Nano 2 Fuses Parts

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Part Number	Actions	Maximum AC Voltage (V)	Voltage Rating (V)	Nominal Melting I²T (A²sec)	Resistance (Ω)	Opening	Body	MSL
Series: 443 - NANO2® Time Lag Subminiature Surface Mount Series: 443 NANO2® Time Lag Subminiature Surface Mount	Datasheet Request Sample View More	250		1.61	0.6	Slo-Blo/Time Lag (T)/Time Delay	Ceramic	Level 1
Series: 443 - NANO2® Time Lag Subminiature Surface Mount Series: 443 NANO2® Time Lag Subminiature Surface Mount	Datasheet Request Sample View More	250		3.025	0.275	Slo-Blo/Time Lag (T)/Time Delay	Ceramic
Series: 443 - NANO2® Time Lag Subminiature Surface Mount Series: 443 NANO2® Time Lag Subminiature Surface Mount	Datasheet Request Sample View More	250		10.17	0.18	Slo-Blo/Time Lag (T)/Time Delay	Ceramic	Level 1
Series: 443 - NANO2® Time Lag Subminiature Surface Mount Series: 443 NANO2® Time Lag Subminiature Surface Mount	Datasheet Request Sample View More	250		18.06	0.052	Slo-Blo/Time Lag (T)/Time Delay	Ceramic	Level 1
Series: 443 - NANO2® Time Lag Subminiature Surface Mount Series: 443 NANO2® Time Lag Subminiature Surface Mount	Datasheet Request Sample View More	250		51.44	0.028	Slo-Blo/Time Lag (T)/Time Delay	Ceramic	Level 1
Series: 443 - NANO2® Time Lag Subminiature Surface Mount Series: 443 NANO2® Time Lag Subminiature Surface Mount	Datasheet Request Sample View More	250		122.5	0.016	Slo-Blo/Time Lag (T)/Time Delay	Ceramic
Series: 443 - NANO2® Time Lag Subminiature Surface Mount Series: 443 NANO2® Time Lag Subminiature Surface Mount	Datasheet Request Sample View More	250		180.6	0.0115	Slo-Blo/Time Lag (T)/Time Delay	Ceramic
Series: 443 - NANO2® Time Lag Subminiature Surface Mount Series: 443 NANO2® Time Lag Subminiature Surface Mount	Datasheet Request Sample View More	250		14.72	0.1	Slo-Blo/Time Lag (T)/Time Delay	Ceramic	Level 1
Series: 443 - NANO2® Time Lag Subminiature Surface Mount Series: 443 NANO2® Time Lag Subminiature Surface Mount	Datasheet Request Sample View More	250		18.13	0.035	Slo-Blo/Time Lag (T)/Time Delay	Ceramic	Level 1
Series: 443 - NANO2® Time Lag Subminiature Surface Mount Series: 443 NANO2® Time Lag Subminiature Surface Mount	Datasheet Request Sample View More	250		53.14	0.019	Slo-Blo/Time Lag (T)/Time Delay	Ceramic	Level 1
Series: 443E - 443E Series - NANO2® High Breaking Capacity 250V Surface Mount Fuse Series: 443E 443E Series - NANO2® High Breaking Capacity 250V Surface Mount Fuse	Datasheet Request Sample View More	250	250	3.97	0.1	Slo-Blo/Time Lag (T)/Time Delay	Ceramic
Series: 443LC - NANO2® 280VAC-rated Surface Mount Fuses Series: 443LC NANO2® 280VAC-rated Surface Mount Fuses	Datasheet Request Sample View More	280		1.61	0.6	Slo-Blo/Time Lag (T)/Time Delay	Ceramic	Level 1

Nano 2 Fuses

Nano 2 Fuses Parts

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Maximum AC Voltage (V)

Voltage Rating (V)

Nominal Melting I2T (A2sec)

Resistance (Ω)

Opening

Body

MSL

Ampere Rating (A)

Marking Code

Nominal Voltage Drop (mV)