Brochure

© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 03/03/17
Surface Mount Fuses
NANO
2®
> 250V > Slo-Blo
®
Fuse > 443 Series
443 Series Fuse
Features
• 250 VAC voltage rating
• Slo-Blo
®
Fuse
• Available 0.50A – 5.00A
• RoHS Compliant
• Fully compatible with
lead-free solder alloys
and higher temperature
profiles associated with
lead-free assembly
RoHS
% of Ampere
Rating
Opening Time
100% 4 hours, Minimum
250% 120 seconds, Maximum
Electrical Specifications by Item
Ampere
Rating
(A)
Amp
Code
Max
Voltage
Rating
(V)
Interrupting
Rating
Nominal Cold
Resistance
(Ohms)
Nominal
Melting
I
2
t (A
2
sec)
Nominal
Voltage Drop
(mV)
Agency Approvals
PS
E
0.50 .500 250
50A @250VAC
0.600 1.61 448
x x x
0.75 .750 250 0.275 3.025 285 x x x
1 0 01. 250 0.180 10.17 234 x x x x
1.50 01. 5 250 0.100 14.72 196 x x x x
2 002. 250 0.052 18.06 154 x x x x
2.50 02.5 250 0.035 18.13 139 x x x x
3 003. 250 0.028 51.44 113 x x x x
3.50 03.5 250 0.019 53.14 98 x x x x
4 004. 250 0.016 122.5 81 x x x x
5 005. 250 0.0115 180.6 80
x x x x
Notes:
1. Cold resistance measured at less than 10% of rated current at 23°C.
2. Agency Approval Table Key: X=Approved or Certified, P=Pending and Blank=Not Approved
3. Have special electrical characteristic needs? Contact Littelfuse to learn more about application specific options.
The 250V Nano
2®
Fuse is a small square surface mount
fuse that is designed to enable compliance with the RoHS
directive. This product is fully compatible with lead-free
solder alloy and higher temperature profiles associated
with lead-free assembly.
• AC/DC power adaptor
• Telecom equipment
system power
• Portable system built-in
AC/DC converter
• Lighting System
• LED Lighting
Description
Applications
Agency Approvals
Electrical Characteristics for Series
AGENCY AGENCY FILE NUMBER AMPERE RANGE
E10480 0.500A - 5.00A
SU05024 -14004
SU05024 -14003
SU05024 -14002
0.500A - 0.750A
1.00A - 2.50A
3.00A - 5.00A
PS
E
NBK290416-JP1021 1.00A – 5.00A
R50310551 0.500A - 5.00A
Specifications are subject to change without notice. Application testing is strongly recommended.
PS
E
Additional Information
Datasheet
Samples
Resources