SURFACE MOUNT FUSES
THIN-FILM SURFACE MOUNT
1206 SMF
Very Fast-Acting Thin-Film Type 429 Series
鈥?The 1206 SMF is an extremely small, low profile design
(1206 chip size) utilizing thin-film technology to achieve
precise control of electrical characteristics.
鈥?New one-piece element/termination design assures extra
reliability by eliminating the need for soldering, welding or
other joining operations in the manufacture of the fuse.
鈥?Semi-rigid substrate eliminates the potential for thermal
shock fractures and decreases the risk of mechanical
damage during pick and place operations.
ELECTRICAL CHARACTERISTICS:
% of Ampere
Rating
100%
200%
300%
Opening
Time at 25
擄
C
4 hours,
Minimum
5 seconds,
Maximum
0.2 seconds,
Maximum
RECOMMENDED PAD LAYOUTS
鹵.005
廬
廬
.125"
0.150"
0.060"
0.045"
0.080"
REFLOW SOLDER
0.065"
0.060"
0.190"
.025"
鹵.010
鹵.005
TIME IN SECONDS
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 鈥?3A
50 amperes at rated voltage, VAC/VDC
4 鈥?7A
35 amperes at rated voltage, VAC/VDC
ENVIRONMENTAL SPECIFICATIONS:
Operating Temperature:
鈥?55擄C to 125擄C.
Vibration:
Withstands 10鈥?55 Hz per MIL-STD-202F,
Method 201A and 10-2000 Hz at 20 G鈥檚 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擄C up to 260擄C, maximum.
Thermal Shock:
Withstands 5 cycles of 鈥?55擄 to 125擄C.
PHYSICAL SPECIFICATIONS:
Materials:
Body: Epoxy Substrate
Terminations: Copper/Nickel/Tin-Lead (95/5)
Cover Coat: Conformal Coating
Soldering Parameters:
Wave Solder 鈥?260擄C, 10 seconds maximum
Reflow Solder 鈥?260擄C, 30 seconds maximum
PACKAGING SPECIFICATIONS:
8mm Tape and Reel
per EIA-RS481-2 (IEC 286, part 3); 3,000 per reel, add
packaging suffix, WR.
PATENTED
ORDERING INFORMATION:
Nominal
Nominal
Nominal
Catalog Ampere Marking Voltage
Resistance Voltage Drop Melting I
2
t
Number Rating
Code
Rating
Cold Ohms
1
(V)
2
(A
2
Sec.)
3
429.125
1/8
FB
125
2.30000
0.200
0.00020
429.200
2/10
FC
125
0.93800
0.175
0.00055
429.250
1/4
FD
125
0.62500
0.160
0.00100
429.375
3/8
FE
125
0.37500
0.138
0.00280
429.500
1/2
FF
63
0.24050
0.130
0.0060
429.750
3/4
FG
63
0.13700
0.120
0.0170
429
001
1
FH
63
0.09950
0.115
0.035
FJ
63
0.07475
0.108
0.065
429
1.25
1
1
/
4
FK
63
0.06250
0.101
0.125
429
01.5
1
1
/
2
FL
63
0.05000
0.096
0.150
429
1.75
1
3
/
4
429
002
2
FN
63
0.03975
0.093
0.230
FO
32
0.03065
0.087
0.50
429
02.5
2
1
/
2
429
003
3
FP
32
0.02625
0.080
0.70
429
004
4
FS
24
0.01926
0.070
1.5
429
005
5
FT
24
0.01375
0.065
2.7
429
007
7
FU
24
0.00925
0.060
3.6
1
Measured at 10% of rated current, 25擄C.
2
Measured at 100% of rated current, 25擄C.
3
Measured at rated voltage.
0.060"
鹵.010
鹵.010
.098"
.000
鹵 .006
.044"
0.045"
.025"
鹵.010
0.080"
WAVE SOLDER
Average Time Current Curves
1
0.1
0.01
0.001
0.1
1
10
CURRENT IN AMPERES
100
30
.125A
.2A
.25A
.375A
.5A
.75A
1A
1.5A
1.75A
2A
2.5A
3A
4A
5A
1
