429 Datasheet, PDF (1/1 Pages) Littelfuse – Surface Mount Fuses - Thin-Film Surface Mount

Surface Mount Fuses
Thin-Film Surface Mount
High Current 1206 ^{RoHS Pb}
Very Fast-Acting Fuse 429 Series
®
• RoHS compliant and Lead-Free 7A device available-add ‘L’ suffix
to catalog number
• For new designs up to 5A please consult the 433 or 466 Series
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:
7A
35 amperes at rated voltage, VAC/VDC
ENVIRONMENTAL SPECIFICATIONS:
Operating Temperature: – 55°C to 90°C. Consult temperature rerating
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:
Standard Device: Copper/Nickel/Tin-Lead (95/5)
RoHs Compliant Device: 100% Copper/Nickel/Tin
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, WRM.
Options: For RoHS Compliant and lead-free devices add the letter ‘L’ to
end of packaging suffix. Example: 0429007.WRML (RoHS Compliant 7A,
3,000 per reel).
ORDERING INFORMATION:
For Low-Current 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
429 007 7.0
FU
429 007L 7.0
7
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
24
0.00925
3.60
24
0.00925
3.60
1 _{Measured at 10% of rated current, 25°C.} 2 _{Measured at rated voltage.}
RECOMMENDED PAD LAYOUTS
3.81
(.150")
1.52
(.060")
1.14
(.045")
2.03
(.080")
REFLOW SOLDER
1.12
(.044")
REF.
PATENTED
Average Time Current Curves
100
10
1
0.1
0.01
3.18
(.125")
2.49 (.098")
REF.
1.52
(.060")
1.14
(.045")
.635
(.025")
®
10
0.001
0.1
www.littelfuse.com
1
10
CURRENT IN AMPERES
100
367