© 2019 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 01/02/19
Axial Lead & Cartridge Fuses
3AG > Slo-Blo® Fuse > 313/315 Series
313/315 Series Lead-Free 3AG, Slo-Blo® Fuse RoHS
Pb
The 3AG Slo-Blo® fuse solves a broad range of application
requirements while offering reliable performance and cost-
effective circuit protection.
The fuse catalog number with the suffix “ID” instantly
identifies itself upon opening by showing a discoloration
of its glass body. Guesswork and time consuming circuit
testing are eliminated. This unique design offers the same
quality performance characteristics as the standard 3AG
Slo-Blo® Fuse design.
Agency Approvals
Agency Agency File Number Ampere Range
E10480 0.010A - 10A**
29862 0.010A - 10A**/15A**
E10480 10A - 30A
PS
E
313 Series (Cartridge):
NBK060618-E10480A
NBK060618-E10480C
1-5A
6.25- 10A**
315 Series (Leaded):
NBK060618-E10480B
NBK060618-E10480D
NBK280906-JP1021
1-5A
6.25-10A**
15**
SU05001-6004
SU05001-5007
SU05001-5008
SU05001-5009
2.25-2.5A
2.8A - 3.2A
4A - 6.3A
7A-8A
N/A 0.010A - 10A**/15A**
Features
Electrical Characteristics by Series
• In accordance with UL
Standard 248-14
• Available in cartridge
and axial lead format
and with various forming
dimensions
• RoHS compliant and
Lead-free
Applications
Used as supplementary protection in appliance or
utilization equipment to provide individual protection for
components or internal circuits.
% of Ampere
Rating Ampere Rating Opening Time
100% 10mA – 30A 4 hours, Minimum
135% 10mA – 30A 1 hour, Maximum
200%
10mA – 15A 5 sec., Min.,
30 sec., Max
20A – 30A 5 sec., Min.,
60 sec Max
PS
E
Description
** See note under Electrical Characteristics by item
Application testing is strongly recommended.
Additional Information
Datasheet Samples
Resources
Datasheet Samples
Resources
313 Series
315 Series
313 Series
315 Series
313 Series
315 Series
Accessories
For recommended fuse accessories for this product series,
see ‘Recommended Accessories’ section.
313 & 315 Series
© 2019 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 01/02/19
Axial Lead & Cartridge Fuses
3AG > Slo-Blo® Fuse > 313/315 Series
Electrical Characteristic Specifications by Item
Amp
Code
Ampere
Rating
(A)
Voltage
Rating
(V)
Interrupting
Rating
Nominal
Cold
Resistance
(Ohms)
Nominal
Melting
I
2
t (A
2
sec)
Agency Approvals
PS
E
.010 0.01 250
35A@250Vac
10KA@125Vac
4300.0000 0.000121 x x x
.031 0.031 250 430.0000 0.00303 x x x
.040 0.04 250 300.0000 0.00630 x x x
.062 0.062 250 120.0000 0.0210 x x x
.100 0.1 250 43.0000 0.0850 x x x
.125 0.125 250 30.0000 0.152 x x x
.150 0.15 250 20.0000 0.270 x x x
.175 0.175 250 8.6700 0.177 x x x
.187 0.187 250 8.0100 0.230 x x x
.200 0.2 250 6.5900 0.270 x x x
.250 0.25 250 4.2700 0.385 x x x
.300 0.3 250 3.1350 0.730 x x x
.375 0.375 250 2.0950 1.23 x x x
.400 0.4 250 1.8750 1.35 x x x
.500* 0.5 250 1.2600 2.55 x x x
.600 0.6 250 0.9120 4.00 x x x
.700 0.7 250 0.7000 5.90 x x x
.750 0.75 250 0.6215 7. 1 6 x x x
.800 0.8 250 0.5540 8.00 x x x
0 01. * 1 250 0.3750 14.0 x x x x
01. 2 1.2 250
100A@250Vac
10KA@125Vac
0.2780 21.5 x x x x
1.25 1.25 250 0.2600 24.0 x x x x
01.5* 1.5 250 0.1910 38.0 x x x x
01. 6 1.6 250 0.1710 49.6 x x x x
01. 8 1.8 250 0.1410 92.0 x x x x
002.* 2 250 0.1169 77.0 x x x x
2.25 2.25 250 0.0968 121 xxx xx
02.5 2.5 250 0.0811 199 xxx xx
02.8 2.8 250 0.0675 269 x x x x x
003.* 3 250 0.0593 200 x x x x x
03.2 3.2 250 0.0529 209 x x x x x
004.* 4 250
200A@250Vac
10KA@125Vac
0.0311 76.1 x x x x x
005.* 5 250 0.0214 276 xxx xx
6.25* 6.25 250 0.0154 388 x x x x x
06.3 6.3 250 0.0154 388 x x x x x
007.* 7 250 0.0128 547 x x x x x
008.* 8 250 0.0111 701 xxx xx
010.** 10 250 0.0083 1285 x x x x
010.* 10 32
300A@32Vac
0.0083 1285 x
012. 12 32 0.0065 1200 x
015.** 15 125 0.0050 2650 x x x x
015. 15 32 0.0050 2650 x
020. 20 32 0.0022 9560 x
025. 25 32 0.0017 16500 x
030. 30 32 0.0012 26900 x
* For 313series, these ratings available with an indicating option. Add the “ID” designation to the series number. i.e. 313.500ID.
** The 10A and 15A ratings are ratings are designed for special voltage requirement. For 10A, it is available as 250Vac rated and the part number
is 0313010.MX250P; For 15A, it is available as 125Vac rated and the part number is 0315015.MX125P.
© 2019 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 01/02/19
Axial Lead & Cartridge Fuses
3AG > Slo-Blo® Fuse > 313/315 Series
Average Time Current Curves
1000
100
10
1
0.1
0.01
1/16A
0.05 0.1 110 100 1000
1/10A
15/100A
.175A
1/4A
3/8A
1/2A
3/4A
1A
1 1/2A
2A
3A
4A
5A
7A
8A
10A
12A
15A
20A
30A
25A
TIME IN SECONDS
CURRENT IN AMPERES
Temperature Re-rating Curve
A
B
A
B
Soldering Parameters - Wave Soldering
Dwell Time
0
20
40
60
80
100
120
140
160
180
200
220
240
260
280
300
0
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
180
190
200
210
220
230
240
Time (Seconds)
Temperature (°C) - Measured on bottom side of board
Cooling Time
Preheat Time
Wave Parameter Lead-Free Recommendation
Preheat:
(Depends on Flux Activation Temperature) (Typical Industry Recommendation)
Temperature Minimum: 100°C
Temperature Maximum: 150°C
Preheat Time: 60-180 seconds
Solder Pot Temperature: 260°C Maximum
Solder Dwell Time: 2-5 seconds
Recommended Hand-Solder Parameters:
Solder Iron Temperature: 350°C +/- 5°C
Heating Time: 5 seconds max.
Note: These devices are not recommended for IR or
Convection Reflow process.
Recommended Process Parameters:
A - For 313/315 Series, from 10mA to 150mA
B - For all other ampere ratings of 313/315 series
Note:
Rerating depicted in this curve is in addition to the standard derating of
25% for continuous operation.
Packaging
Packaging Option Packaging Specification Quantity Quantity &
Packaging Code Taping Width
313 Series
Bulk N/A 1000 MX N/A
Bulk N/A 100 HX N/A
315 Series
Bulk N/A 1000 MX N/A
Bulk N/A 100 HX N/A
Bulk N/A 1000 MXB N/A
© 2019 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 01/02/19
Axial Lead & Cartridge Fuses
3AG > Slo-Blo® Fuse > 313/315 Series
Product Characteristics
313 000P Series
(cartridge)
315 000P Series
(axial leaded)
6.35±0.3
(.25")
32.72±1.12
(1.288")
31.75±1.12
(1.25")
6.985±0.3
(.275")
Axial Lead Diameter:
0.81±0.05 (.032") for
(0.01A - 15A)
1.02±0.06 (.040") for
(20A - 30A)
Axial Lead Length:
38.1±3.15 (1.50") TYP.
Axial Lead Material:
Tin-coated copper
Materials Body: Glass
Cap: Nickel–plated brass
Leads: Tin–plated Copper
Terminal Strength MIL-STD-202, Method 211, Test
Condition A
Solderability MIL-STD-202 method 208
Product Marking Cap1: Brand logo, current and voltage
ratings
Cap2: Series and agency approval marks
Operating
Temperature –55ºC to +125ºC
Thermal Shock MIL-STD-202, Method 107, Test Condition
B: (5 cycles -65°C to +125°C)
Vibration MIL-STD-202, Method 201
Humidity MIL-STD-202, Method 103, Test
Condition A: High RH (95%) and Elevated
temperature (40°C) for 240 hours
Salt Spray MIL- STD-202, Method 101, Test
Condition B
Part Numbering System
0313 MX Pxxxx
Lead-free
Packaging Code
Quantity Code
Amp Code
Series
X = Filler
M = 1000
Refer to Amp Code column of
Electrical Characteristics Table
Dimensions
Measurements displayed in millimeters (inches)
Recommended Accessories
Accessory
Type Series Description Max
Application
Voltage
Max
Application
Amperage
Holder
155100 Twist-Lock In-Line Fuseholder 32 20
342 Traditional Panel Mount Fuseholder 250 20
346 Panel Mount Flip-Top Shock-Safe Fuseholder 250 15
345 Shock-Safe Fuseholder with PC Mount, Solder Mount and Panel Mount options 250 16
Block 354 Low Profile OMNI-BLOK® Fuse Block 600 30
359 High Current Screw Terminal Fuse Block 30
Clip 122 High Current Traditional PC Board Fuse Clip 1000 30
101 Rivet/Eyelet Type Fuse Clip 1000 15
Notes:
1. Do not use in applications above rating.
2. Please refer to fuseholder data sheet for specific re-rating information.
3. Please contact factory for applications greater than the max voltage and amperage shown.
Disclaimer Notice - Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and
test each product selected for their own applications. Littelfuse products are not designed for, and may not be used in, all applications. Read complete
Disclaimer Notice at: www.littelfuse.com/disclaimer-electronics.
