Datasheet

Surface Mount Fuses
NANO2® Fuse > 250V > Fast Acting > 476 Series
476 Series Fuse
RoHS
Description
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
• Small 2410 Footprint
• Wide Operating
temperature range of
• 250V Voltage Rating (1A to
-55°C to 125°C
5A)
• High Interrupting Ratings • IEC 61000-4-5 2 ed. Surge
Immunity Test Compliant
•Fast-Acting
(1.2 x 50us/8x20us
• RoHS Compliant and
combination wave
Halogen-Free
500V/250A for <25W
Lamp Category) – 3A and
• Designed in accordance
above ampere rating only
with IEC 60127-4 Universal
Agency Approvals
Agency
Agency File Number
Ampere Range
E10480
1A - 15A
Modular Fuse requirement
Applications
•
LED Lighting
•
LCD/LED TVs
•
Power Supply Units
•
Electrical Characteristics for Series
White Goods
% of Ampere
Rating
Ampere
Rating
Opening Time
100%
1A - 15A
4 Hour, Minimum
125%
1A - 5A
1 Hour, Minimum
200%
1A - 15A
120 Sec., Maximum
1000%
1A - 5A
0.001 Sec., Min; 0.01 Sec., Max
Electrical Characteristic
Ampere
Rating
(A)
Amp Code
Max Voltage
Rating (V)
Interrupting
Rating
Nominal
Cold Resistance
(Ohms)
Nominal Melting
I2t (A2 sec.)
Agency
Approvals
1.00
001
250V
0.1575
0.193
x
1.25
1.25
250V
0.122
0.276
x
1.60
01.6
250V
0.0825
0.620
x
2.00
002
250V
0.0448
0.530
x
2.50
02.5
250V
0.0363
0.910
x
3.00
003
250V
0.0277
1.660
x
3.50
03.5
250V
0.0234
2.356
x
4.00
004
250V
0.01839
2.820
x
5.00
005
250V
0.0157
4.000
x
6.30
06.3
125V
0.0126
7.500
x
0.0116
7.800
x
0.0112
9.757
x
0.0096
14.879
x
0.006
20.635
x
0.0045
61.286
x
7.00
007
125V
8.00
008
125V
10.0
010
125V
12.0
012
125V
15.0
015
125V
100A @ 250VAC
300A @ 125VDC
10kA @ 86VDC
[email protected]
[email protected]
[email protected]
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. I2t values stated for 8msec opening time.
4. For 15A rating with [email protected] 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
NANO2® Fuse > 250V > Fast Acting > 476 Series
Temperature Rerating Curve
15A
2.5A
3A
3.5A
4A
5A
6.3A
7A
8A
10A
12A
1A
1.25A
1.6A
Average Time Current Curves
1000
100
TIME IN SECONDS
10
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
100
1000
CURRENT IN AMPERES
Soldering Parameters
Pre Heat
Pb – free assembly
- Temperature Min (Ts(min))
150°C
- Temperature Max (Ts(max))
200°C
- Time (Min to Max) (ts)
60 – 180 seconds
Average Ramp-up Rate (Liquidus Temp
(TL) to peak)
5°C/second max.
TS(max) to TL - Ramp-up Rate
5°C/second max.
Reflow
- Temperature (TL) (Liquidus)
217°C
- Temperature (tL)
60 – 150 seconds
260
Time within 5°C of actual peak
Temperature (tp)
20 – 40 seconds
Critical Zone
TL to TP
Ramp-up
TL
TS(max)
tL
Ramp-down
TS(min)
25
Peak Temperature (TP)
+0/-5
tP
TP
Temperature
Reflow Condition
Preheat
tS
time to peak temperature
(t 25ºC to peak)
Time
°C
Ramp-down Rate
5°C/second max.
Time 25°C to peak Temperature (TP)
8 minutes max.
Do not exceed
260°C
© 2016 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 05/09/16
Surface Mount Fuses
NANO2® Fuse > 250V > Fast Acting > 476 Series
Product Characteristics
Materials
Body: Ceramic
Cap: Silver Plated Brass/Sn Dipped
Silver Plated Brass/Gold Plated Brass
Product Marking
Body: Brand Logo, Current Rating
Operating Temperature
–55ºC to +125ºC
Moisture Sensitivity
Level
Level 1
Solderability
MIL-STD-202, Method 208
Insulation Resistance
(after opening)
IEC 60127-4 (0.1Mohm Min)
Thermal Shock
MIL-STD-202, Method 107
Test Condition B, 5 cycles, -65°C to
125°C, 15 minutes @ each extreme
Mechanical Shock
MIL-STD-202, Method 213
Test Condition I: De-energized. 100G’s
peak amplitude, sawtooth wave 6ms
duration, 3 cycles XYZ+xyz = 18 shocks
Vibration
MIL-STD-202, Method 201: 0.03”
amplitude, 10-55 Hz in 1 min. 2 hrs.
each XYZ = 6hrs (10- 55 Hz)
Moisture Resistance
MIL-STD-202, Method 106
10 cycles
Salt Spray
MIL-STD-202, Method 101
Test Condition B (48 hrs)
Resistance to
Soldering Heat
MIL-STD-202, Method 210,
Test Condition B (10 sec at 260°C)
Part Numbering System
Dimensions
2.69 ± .25
(.106")
6.10 ± .20
(.240")
0476 015. M R SN
Series
15
Amp Code*
1.45
(.057")
Refer to Amp Code column of
Electrical Characteristics Table
2.69 ± .25
(.106")
Quantity Code
M = 1000 pieces
1.96
(.077")
2.95
(.116")
Packaging Code
R = Tape and Reel
3.15
(.124")
SN — Sn-dipped Caps
S — For 15A only - Gold Plated
Caps with [email protected] IR
6.86
(.270")
Recommended Pad Layout
Packaging
Packaging Option
Packaging Specification
Quantity
Quantity &
Packaging Code
Reel Size
12mm Tape and Reel
EIA-RS-481-2 (IEC 286 part 3)
1000
MR
N/A
© 2016 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 05/09/16