Surface Mount Fuses
NANO
2®
Fuse > 250V > Fast Acting > 476 Series
476 Series Fuse
Description
RoHS
The 476 Series is a family of 250V rated fuses with a very
small 2410 footprint. It is the smallest SMD fuse with this
high voltage rating and is designed to mainly serve as
primary side circuit protection for compact devices with
high voltage requirements.
Features
•
•
Agency Approvals
Agency
Agency File Number
E10480
Small 2410 Footprint
250V Voltage Rating (1A to
5A)
•
Wide Operating
temperature range of
-55°C to 125°C
IEC 61000-4-5 2 ed. Surge
Immunity Test Compliant
(1.2 x 50us/8x20us
combination wave
500V/250A for <25W
Lamp Category) – 3A and
above ampere rating only
•
•
Ampere Range
1A - 15A
High Interrupting Ratings •
Fast-Acting
RoHS Compliant and
Halogen-Free
Designed in accordance
with IEC 60127-4 Universal
Modular Fuse requirement
•
•
Applications
•
•
•
LED Lighting
LCD/LED TVs
Power Supply Units
•
White Goods
Electrical Characteristics for Series
% of Ampere
Rating
100%
125%
200%
1000%
Ampere
Rating
1A - 15A
1A - 5A
1A - 15A
1A - 5A
Opening Time
4 Hour, Minimum
1 Hour, Minimum
120 Sec., Maximum
0.001 Sec., Min; 0.01 Sec., Max
Electrical Characteristic
Ampere
Rating
(A)
1.00
1.25
1.60
2.00
2.50
3.00
3.50
4.00
5.00
6.30
7
.00
8.00
10.0
12.0
15.0
Amp Code
Max Voltage
Rating (V)
250V
250V
250V
250V
250V
250V
250V
250V
250V
125V
125V
125V
125V
125V
125V
Interrupting
Rating
Nominal
Cold Resistance
(Ohms)
0.1575
0.122
0.0825
Nominal Melting
I
2
t (A
2
sec.)
0.193
0.276
0.620
0.530
0.910
1.660
2.356
2.820
4.000
7
.500
7
.800
9.757
14.879
20.635
61.286
Agency
Approvals
001
1.25
01.6
002
02.5
003
03.5
004
005
06.3
007
008
010
012
015
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
100A @ 250VAC
300A @ 125VDC
10kA @ 86VDC
0.0448
0.0363
0.0277
0.0234
0.01839
0.0157
0.0126
0.0116
0.0112
0.0096
0.006
0.0045
100A@125VAC
300A@125VDC
10kA@86VDC
Notes: 1. Cold resistance measured at less than 10% of rated current at 25°C
2. Agency Approval Table Key: X = Approved or Certified, P=Pending and Blank=Not Approved.
3. I
2
t values stated for 8msec opening time.
4. For 15A rating with 10kA@86VDC IR, please use suffix “S” for ordering. Refer to Part Numbering System for reference.
© 2016 Littelfuse, Inc.
Specifications are subject to change without notice. Application testing is strongly recommended.
Revised: 05/09/16
Surface Mount Fuses
NANO
2®
Fuse > 250V > Fast Acting > 476 Series
Temperature Rerating Curve
Average Time Current Curves
1A
1.25A
1.6A
2.5A
3A
3.5A
4A
5A
6.3A
7A
8A
10A
12A
1000
100
10
TIME IN SECONDS
1
0.1
NOTE:
Derating depicted in this curve is in addition to the standard derating of 25% for
continuous operation.
0.01
0.001
1
10
CURRENT IN AMPERES
15A
100
1000
Soldering Parameters
Reflow Condition
- Temperature Min (T
s(min)
)
Pre Heat
- Temperature Max (T
s(max)
)
- Time (Min to Max) (t
s
)
Average Ramp-up Rate (Liquidus Temp
(T
L
) to peak)
T
S(max)
to T
L
- Ramp-up Rate
Reflow
- Temperature (T
L
) (Liquidus)
- Temperature (t
L
)
Pb – free assembly
150°C
60 – 180 seconds
5°C/second max.
5°C/second max.
217°C
60 – 150 seconds
260
+0/-5
T
P
T
L
Temperature
t
P
Ramp-up
Critical Zone
T
L
to T
P
200°C
T
S(max)
T
S(min)
Preheat
t
L
Ramp-down
t
S
time to peak temperature
(t 25ºC to peak)
25
Time
Peak Temperature (T
P
)
Time within 5°C of actual peak
Temperature (t
p
)
Ramp-down Rate
Time 25°C to peak Temperature (T
P
)
Do not exceed
°C
20 – 40 seconds
5°C/second max.
8 minutes max.
260°C
© 2016 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 05/09/16
Surface Mount Fuses
NANO
2®
Fuse > 250V > Fast Acting > 476 Series
Product Characteristics
Materials
Product Marking
Operating Temperature
Moisture Sensitivity
Level
Solderability
Insulation Resistance
(after opening)
Body:
Ceramic
Cap:
Silver Plated Brass/Sn Dipped
Silver Plated Brass/Gold Plated Brass
Body:
Brand Logo, Current Rating
–55ºC to +125ºC
Level 1
Vibration
MIL
-STD-202, Method 208
IEC 60127-4 (0.1Mohm Min)
Moisture Resistance
Salt Spray
Resistance to
Soldering Heat
Mechanical Shock
Thermal Shock
MIL
-STD-202, Method 107
Test Condition B, 5 cycles, -65°C to
125°C, 15 minutes @ each extreme
MIL
-STD-202, Method 213
Test Condition I: De-energized. 100G’s
peak amplitude, sawtooth wave 6ms
duration, 3 cycles XYZ+xyz = 18 shocks
MIL
-STD-202, Method 201: 0.03”
amplitude, 10-55 Hz in 1 min. 2 hrs.
each XYZ = 6hrs (10- 55 Hz)
MIL
-STD-202, Method 106
10 cycles
MIL
-STD-202, Method 101
Test Condition B (48 hrs)
MIL
-STD-202, Method 210,
Test Condition B (10 sec at 260°C)
Dimensions
Part Numbering System
6.10 ± .20
(.240")
2.69 ± .25
(.106")
Series
Amp Code*
0476 015. M R SN
15
1.45
(.057")
2.69 ± .25
(.106")
1.96
(.077")
2.95
(.116")
6.86
(.270")
Recommended Pad Layout
Packaging
Packaging Option
12mm Tape and Reel
Packaging Specification
EIA-RS-481-2 (IEC 286 part 3)
Refer to Amp Code column of
Electrical Characteristics Table
Quantity Code
M = 1000 pieces
Packaging Code
R = Tape and Reel
3.15
(.124")
SN — Sn-dipped Caps
S — For 15A only - Gold Plated
Caps with 10kA@86VDC IR
Quantity
1000
Quantity &
Packaging Code
MR
Reel Size
N/A
© 2016 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 05/09/16
