Surface Mount Fuses
Subminiature Surface Mount & Dip Types
FLAT-PAK
廬
Slo-Blo
廬
Fuse
203 Series
鈥?For new designs please use the 465 Series, NANO
2廬
250V UMF Fuse.
Fast-Acting and Slo-Blo
廬
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.
廬
廬
ELECTRICAL CHARACTERISTICS:
% of Ampere
Rating
100%
200%
Opening
Time
4 hours,
Minimum
1 second,
Minimum
30 seconds,
Maximum
Reference Dimensions:
202 FLAT- PAK
202GFLAT- PAK
AGENCY APPROVALS:
Recognized under the Components
Program of Underwriters Laboratories and Certified by CSA.
F
L
F 2A
250 V
9.45
(.372")
F
L
6.35
(.250")
4.19
(.165")
F 2A
250 V
9.45
(.372")
PAT 4563666
PAT 4563666
AGENCY FILE NUMBERS:
UL E10480, CSA LR 29862.
INTERRUPTING RATING:
50 amperes at 250 VAC.
6.35
(.250")
4.19
(.165")
ENVIRONMENTAL SPECIFICATION:
Operating Temperature:
鈥?5擄C to 125擄C.
PHYSICAL SPECIFICATIONS:
Materials:
Body: Thermoplastic
Terminations: Tin/Lead Plated Copper
.135"
0.08 (.003")
1.40 (.055")
10.16
(.400")
0.30 (.012")
0.53
(.021")
15.24 (.600")
1.52
(.060")
6
o
DIP Configuration
(Thru-Hole) Mounting
SMF Configuration
("Gull Wing" Surface Mount)
17.12 (.674)
4.06 (.160)
2.79 (.110)
11.53 (.454)
Soldering Parameters:
Wave Solder 鈥?260擄C, 3 seconds maximum.
Reflow Solder 鈥?215擄C, 30 seconds maximum.
Solderability:
MIL-STD-202, Method 208.
Cleaning:
Board washable in most common solvents.
Recommended Pad Layout
Average Time Current Curves
1/2A
3/4A
1A
1 1/2A
2A
2 1/2A
3A
4A
5A
1/4A
10
SURFACE MOUNT
FUSES
1000
385
PACKAGING SPECIFICATIONS:
SMF Fuses 鈥?24mm Tape and Reel per EIA-RS481-2
(IEC 286, part 3); 500 per reel.
DIP Fuses 鈥?Antistatic magazine, 100 per magazine.
100
PATENTED
ORDERING INFORMATION
Catalog
Number
203.250
203.500
203.750
203
001
203
01.5
203
002
203
02.5
203
003
203
004
203
005
1
10
Catalog
1
Number
203.250G
203.500G
203.750G
203
001G
203
01.5G
203
002G
203
02.5G
203
003G
203
004G
203
005G
Ampere
Rating
1/4
1/2
3/4
1
1
1
/
2
2
2
1
/
2
3
4
5
Voltage
Rating
250
250
250
250
250
250
250
250
250
250
Nominal
Resistance
Cold Ohms
1.36
0.433
0.158
0.0755
0.0390
0.0345
0.0237
0.0197
0.0148
0.0124
Nominal
Melting I
2
t
A
2
Sec.
0.0126
0.112
0.327
0.328
0.850
1.70
2.87
4.40
8.75
14.7
TIME IN SECONDS
1
.1
SMF fuse marking includes the letter 鈥淕鈥?next to the series number indicating 鈥淕ull-Wing鈥?
0.01
0.001
0.05 0.1
1
10
100
CURRENT IN AMPERES
w w w. l i t t e l f u s e . c o m
LITTELFUSE
1
