SURFACE MOUNT FUSES
SUBMINIATURE SURFACE MOUNT
NANO
2廬
SMF
Slo-Blo
廬
Type Fuse
廬
廬
The very small NANO
2
Fuse with time delay performance
characteristics. The unique time delay feature of this fuse
design helps solve the problem of nuisance 鈥渙pening鈥?by
accommodating inrush currents that normally cause a fast-
acting fuse to open.
ELECTRICAL CHARACTERISTICS:
% of Ampere
Rating
100%
200%
300%
800%
Opening
Time
4 hours,
Minimum
1 second,
Min.;
60 seconds,
Max.
0.2 seconds,
Min.;
3 seconds,
Max.
0.02 seconds,
Min.;
0.1 seconds,
Max.
6.86
(.270")
3.15
(.124")
2.95
(.116")
1.45
(.057")
6.10
(.240")
AGENCY APPROVALS:
Recognized under the
Components Program of Underwriters Laboratories and
Certified by CSA.
AGENCY FILE NUMBERS:
UL E10480, CSA LR 29862.
INTERRUPTING RATINGS:
50 amperes at 125 VAC
50 amperes at 125 VDC
300 amperes at 32 VDC
ENVIRONMENTAL SPECIFICATIONS:
Operating Temperature:
鈥?5擄C to 125擄C.
Shock:
MIL-STD-202, Method 213, Test Condition I (100
G鈥檚 peak for 6 milliseconds).
Vibration:
MIL-STD-202, Method 201 (10鈥?5 Hz, .06 in.
total excursion).
Salt Spray:
MIL-STD-202, Method 101, Test Condition B
(48 hrs.).
Insulation Resistance (After Opening):
MIL-STD-202,
Method 302, Test Condition A, (10,000 ohms minimum).
Resistance to Soldering Heat:
MIL-STD-202, Method
210, (3 sec. at 260擄C).
Thermal Shock:
MIL-STD-202, Method 107,
Test Condition B (鈥?5 to 125擄C).
Moisture Resistance:
MIL-STD-202, Method 106,
High Humidity (90-98 RH), Heat (65擄C).
PHYSICAL SPECIFICATIONS:
Materials:
Body: Ceramic
Terminations: Tin-Lead Alloy or Silver
Plated Brass Caps.
Soldering Parameters:
Wave Solder 鈥?260擄C, 3 seconds maximum
Reflow Solder 鈥?230擄C, 30 seconds maximum
Solderability:
MIL-STD-202, Method 208.
PACKAGING SPECIFICATIONS:
12mm Tape and Reel per
EIA-RS481 (IEC 286, part 3); 1,000 per reel.
Marking:
The
452/454
series Slo-Blo fuse marking includes
the letter 鈥淭鈥?to designate time delay characteristics.
PATENTED
ORDERING INFORMATION:
Tin-Lead
Plated
Catalog #
R452.375
R452.500
R452.750
R452
001.
R452
01.5
R452
002.
R452
02.5
R452
003.
R452
03.5
R452
004.
R452
005.
Silver
Plated Ampere
Catalog # Rating
0454.375
3/8
0454.500
1/2
0454.750
3/4
0454
001.
1
0454
01.5
1
1
/
2
0454
002.
2
0454
02.5
2
1
/
2
0454
003.
3
0454
03.5
3
1
/
2
0454
004.
4
0454
005.
5
Voltage
Rating
125
125
125
125
125
125
125
125
125
125
125
Nominal
Nominal
Resistance Melting I
2
t
Cold Ohms
A
2
Sec.
1.60
0.101
0.940
0.240
0.460
0.904
0.270
1.98
0.116
3.65
0.0760
8.20
0.0540
15.0
0.0414
20.16
0.0224
26.53
0.0186
34.40
0.0136
53.72
F
L T
1A
2.69
(.106")
2.69
(.106")
1.96
(.077")
Recommended pad layout
Note: Metric dimensions shown.
Inch dimensions are in parentheses.
Average Time Current Curves
1000
100
TIME IN SECONDS
10
1
0.1
0.01
0.1
3/8A
1/2A
3/4A
1A
1 1/2A
2A
2 1/2A
3A
3 1/2A
4A
5A
1
10
100
CURRENT IN AMPERES
1000
Refer to pg. 102 for SMF Omni-Blok
廬
Holder, Series
154
000T.
35
1
