0429004.WRM Datasheet, PDF (1/1 Pages) Bel Fuse Inc. – Surface Mount Fuses

Surface Mount Fuses
Thin-Film Surface Mount
1206 Very Fast-Acting Fuse 429 Series
®
®
• For new designs please consult the 433 or 466 Series on pages 258-260.
ELECTRICAL CHARACTERISTICS:
% of Ampere
Rating
Opening
Time at 25°C
100%
4 hours, Minimum
200%
5 seconds, Maximum
300%
0.2 seconds, Maximum
AGENCY APPROVALS: Recognized under the Components Program
of Underwriters Laboratories and Certified by CSA.
AGENCY FILE NUMBERS: UL E10480, CSA LR 29862.
INTERRUPTING RATINGS:
0.125 – 3A
50 amperes at rated voltage, VAC/VDC
4 – 7A
35 amperes at rated voltage, VAC/VDC
ENVIRONMENTAL SPECIFICATIONS:
Operating Temperature: – 55°C to 90°C. Consult temperature rerat-
ing chart on page 4. For operation above 90°C contact Littelfuse.
Vibration: Withstands 10– 55 Hz per MIL-STD-202F,
Method 201A and 10-2000 Hz at 20 G’s per MIL-STD-202F, Method
204D, Condition D.
Insulation Resistance (After Opening): Greater than 10 KOhm.
Resistance to Soldering Heat: Withstands 60 seconds above
200°C up to 260°C, maximum.
Thermal Shock: Withstands 5 cycles of – 55° to 125°C.
PHYSICAL SPECIFICATIONS:
Materials: Body: Epoxy Substrate
Terminations: Copper/Nickel/Tin-Lead (95/5)
Cover Coat: Conformal Coating
Soldering Parameters:
Reflow Solder — 260°C, 30 seconds maximum
PACKAGING SPECIFICATIONS: 8mm Tape and Reel per
EIA-RS481-1 (IEC 286, part 3); 3,000 per reel, add packaging suffix, WR.
PATENTED
ORDERING INFORMATION:
For New Designs Use 433 or 466 Series.
Catalog Ampere
Number Rating
Marking
Code
Nominal Nominal
Voltage Resistance
Rating Cold Ohms¹
Melting I²t
(A² Sec.)²
429.125 0.125
FB
429.200 0.200
FC
429.250 0.250
FD
429.375 0.375
FE
429.500 0.500
FF
429.750 0.75
FG
429 001 1.00
FH
429 1.25 1.25
FJ
429 01.5 1.50
FK
429 1.75 1.75
FL
429 002 2.0
FN
429 02.5 2.5
FO
429 003 3.0
FP
429 004 4.0
FS
429 005 5.0
FT
429 007 7.0
FU
125
2.30000
0.00020
125
0.93800
0.00055
125
0.62500
0.00100
125
0.37500
0.00280
63
0.24050
0.0060
63
0.13700
0.0170
63
0.09950
0.035
63
0.07475
0.065
63
0.06250
0.125
63
0.05000
0.150
63
0.03975
0.230
32
0.03065
0.500
32
0.02625
0.700
24
0.01926
1.50
24
0.01375
2.70
24
0.00925
3.60
1 _{Measured at 10% of rated current, 25°C.}
2 _{Measured at rated voltage.}
RECOMMENDED PAD LAYOUTS
3.18
(.125")
3.81
(.150")
1.52
(.060")
1.14
(.045")
2.03
(.080")
1.12
(.044")
REF.
REFLOW SOLDER
2.49 (.098")
REF.
Average Time Current Curves
100
10
1
0.1
0.01
0.001
0.1
1
10
CURRENT IN AMPERES
www.littelfuse.com
1.52
(.060")
1.14
(.045")
.635
(.025")
100
364