Thin-Film Surface Mount
367
Surface Mount Fuses
High Current 1206 Very Fast-Acting Fuse 429 Series
www.littelfuse.com
Nominal Nominal
Catalog Ampere Marking Voltage Resistance Melting I
2
t
Number Rating Code Rating Cold Ohms
1
(A
2
Sec.)
2
429.125 0.125 FB 125 2.30000 0.00020
429.200 0.200 FC 125 0.93800 0.00055
429.250 0.250 FD 125 0.62500 0.00100
429.375 0.375 FE 125 0.37500 0.00280
429.500 0.500 FF 63 0.24050 0.0060
429.750 0.75 FG 63 0.13700 0.0170
429 001 1.00 FH 63 0.09950 0.035
429 007 7.0 FU 24 0.00925 3.60
429 007L 7.0 7 24 0.00925 3.60
1
Measured at 10% of rated current, 25°C.
2
Measured at rated voltage.
7
A
TIME IN SECONDS
CURRENT IN AMPERES
0.01
0.1
0.1
1
1
10
100
10 100
0.001
Average Time Current Curves
REFLOW SOLDER
RECOMMENDED PAD LAYOUTS
3.81
(.150")
1.52
(.060")
2.03
(.080")
.635
(.025")
1.14
(.045")
2.49 (.098")
REF.
1.52
(.060")
3.18
(.125")
1.14
(.045")
1.12
(.044")
REF.
® ®
For Low-Current Designs Use 433 or 466 Series.
RoHS Pb
PATENTED
• 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 Opening
Rating 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:
10
SURF
A
CE MOUNT
FUSES