Surface Mount Fuses
FLAT-PAK® Slo-Blo® Fuse > 203 Series
203 Series Fuse
Description
203 Series
Fast-Acting and Slo-Blo® Fuse versions of the Flat-Pak Fuse
designs are available. Both designs are available in either a
gull-wing surface mount package or a DIP configuration for
through-hole mounting. These fuse designs feature a 250
VAC rating in a low profile, rectangular package.
Agency Approvals
AGENCY
AGENCY FILE
NUMBER
AMPERE RANGE
E10480
1/4mA - 5A
LR29862
1/4mA - 5A
Electrical Characteristics for Series
% of Ampere
Rating
Opening Time
100%
4 hours, Minimum
200%
1 second, Min; 30 seconds Max.
Electrical Specifications by Item
Ampere
Rating
(A)
Amp Code
Max
Voltage
Rating
(V)
0.25
.250
0.50
0.75
1.00
Agency Approvals
Nominal Cold
Resistance
(Ohms)
Nominal Melting
I2t (A2sec)
250
1.36
0.0126
x
x
.500
250
0.433
0.112
x
x
.750
250
0.158
0.327
x
x
001.
250
0.0755
0.328
x
x
0.0390
0.850
x
x
0.0345
1.70
x
x
Interrupting
Rating
1.50
01.5
250
2.00
002.
250
2.50
02.5
250
0.0237
2.87
x
x
3.00
003.
250
0.0197
4.40
x
x
50 amperes
@250 VAC
4.00
004.
250
0.0148
8.75
x
x
5.00
005.
250
0.0124
14.7
x
x
© 2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/203.html for current information.
119
Revised: June 29, 2011
203 Series
Mount
Fuses
IntroductionSurface
to Circuit
Protection
FLAT-PAK® Slo-Blo® FuseTransientology
> 203 Series
1/2A
3/4A
1A
1 1/2A
2A
2 1/2A
3A
4A
5A
Average Time Current Curves
1/4A
Temperature Rerating Curve
100
TIME IN SECONDS
10
1
.1
Note:
0.01
1. Derating depicted in this curve is in addition to the standard derating of 25% for
continuous operation.
0.001
0.05 0.1
1
10
100
CURRENT IN AMPERES
1000
Soldering Parameters
Wave Soldering
260°C, 3 seconds max.
Reflow Soldering
215°C, 30 seconds max.
203 Series
120
© 2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/203.html for current information.
Surface Mount Fuses
FLAT-PAK® Slo-Blo® Fuse > 203 Series
Product Characteristics
Materials
Body: Thermoplastic
Terminations: Tin/Lead Plated Copper
Cleaning
Board washable in most common
solvents
Solderability
MIL-STD-202, Method 208
Operating Temperature
–55OC to 125OC
Part Numbering System
Dimensions
202GFLAT- PAK
202 FLAT- PAK
LF
F 2A
250 V
9.45
(.372")
6.35
(.250")
4.19
(.165")
0.08 (.003")
1.40 (.055")
.135"
10.16
(.400")
0.53
(.021")
0.30 (.012")
0203 002. HXG
6.35
(.250")
4.19
(.165")
6o
Through Hole Fuses:
PAT 4563666
PAT 4563666
9.45
(.372")
Surface Mount Fuses:
F 2A
250 V
1.52
(.060")
Series
Amp Code
Amp Code
Quantity Code
SMF Configuration
("Gull Wing" Surface Mount)
DIP Configuration
(Thru-Hole) Mounting
Series
Refer to Amp Code column of
Electrical Characteristics Table
15.24 (.600")
HXG = 100
URG = 500
17.12 (.674)
0203 002. H
Refer to Amp Code column of
Electrical Characteristics Table
Quantity Code
H = 100
4.06 (.160)
2.79 (.110)
11.53 (.454)
Recommended Pad Layout
Packaging
Packaging Specification
Quantity
Quantity &
Packaging Code
Bulk
–
100
HXG
24mm Tape and Reel
EIA 481 (IEC60286, part 3)
500
URG
–
100
H
Packaging Option
Surface Mount Fuses
Through Hole Fuses
Antistatic Magazine
© 2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/203.html for current information.
121
203 Series
203 Series
LF