Thin-Film Surface Mount
364
Surface Mount Fuses
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 1.25 1.25 FJ 63 0.07475 0.065
429 01.5 1.50 FK 63 0.06250 0.125
429 1.75 1.75 FL 63 0.05000 0.150
429 002 2.0 FN 63 0.03975 0.230
429 02.5 2.5 FO 32 0.03065 0.500
429 003 3.0 FP 32 0.02625 0.700
429 004 4.0 FS 24 0.01926 1.50
429 005 5.0 FT 24 0.01375 2.70
429 007 7.0 FU 24 0.00925 3.60
1
Measured at 10% of rated current, 25°C.
2
Measured at rated voltage.
•
For new designs please consult the 433 or 466 Series on pages 258-260.
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:
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:
