Littelfuse 313 User Manual

Axial Lead & Cartridge Fuses

3AG > Time Lag > 313/315 Series

313/315 Series Lead-Free 3AG, Slo-Blo® Fuse

PS

E

Description

The 3AG Slo-Blo® fuse solves a broad range of application
requirements while offering reliable performance and cost­effective 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 10mA - 10A**

LR 29862 10mA - 10A**/15A**

E10480 10A - 30A

PS

E

NBK 040205-

E10480B/D/F/G/H

SU05001-

5007/5008/5009/6004

1A - 10A**/ 15A**

2.25A - 8A

10mA - 10A**/15A**

Additional Information

Datasheet

313 Series

Resources

313 Series

Samples

313 Series

Features

• InaccordancewithUL

Standard 248-14

• RoHScompliantand

Lead-free

• Availableincartridge

and axial lead format
and with various forming
dimensions

Applications

Used as supplementary protection in appliance or
utilization equipment to provide individual protection for
components or internal circuits.

Electrical Characteristics by Series

% of Ampere

Rating

100%

135%

200%

Ampere Rating Opening Time

10mA – 30A 4 hours, Minimum

10mA – 30A 1 hour, Maximum

10mA – 15A 5 sec., Min.,

30 sec., Max

20A – 30A 5 sec., Min.,

60 sec Max

Datasheet

315 Series

© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/19/13

Resources

315 Series

Samples

315 Series

Axial Lead & Cartridge Fuses

PS

E

3AG > Time Lag > 313/315 Series

Electrical Characteristic Specifications by Item

Agency Approvals

Amp

Code

Ampere

Rating

(A)

Voltage

Rating

(V)

.010 0.01 250

Interrupting

Rating

Nominal

Cold

Resistance

(Ohms)

Nominal

Melting

2

I

t (A2 sec)

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
.10 0 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

35A@250Vac

10KA@125Vac

.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. 16 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

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 58.0 x x x x

002.* 2 250 0.1169 77.0 x x x x

2.25 2.25 250 0.0968 121 x x x x x

100A@250Vac
10KA@125Vac

02.5 2.5 250 0.0811 130 x x x x x

02.8 2.8 250 0.0675 170 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

0.0311 76.1 x x x x x

005.* 5 250 0.0214 140 x x x x x

6.25* 6.25 250 0.0154 242 x x x x x

06.3 6.3 250 0.0154 242 x x x x x

200@250Vac

10KA@125Vac

007.* 7 250 0.0128 347 x x x x x

008.* 8 250 0 .0111 445 x x x x x

010.** 10 250

0.0083 760 x x x x

010. * 10 32 0.0083 760 x

012. 12 32 0.0065 120 0 x

015.** 15 125 0.0050 1870 x x x x

015. 15 32 0.0050 1870 x

300A@32Vac

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.
** These 2 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.

Specifications are subject to change without notice.

© 2013 Littelfuse, Inc.

Revised: 12/19/13

Axial Lead & Cartridge Fuses

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

3/4A1A1 1/2A2A3A4A5A7A8A

10A

12A

15A

20A

30A

25A

TIME IN SECONDS

CURRENT IN AMPERES

300

240

Temperature (°C) - Measured on bottom side of board

3AG > Time Lag > 313/315 Series

Temperature Rerating Curve

A

B

A - For 313/315 Series, from 10mA to 150mA

B - For all other ampere ratings of 313/315 series

Average Time Current Curves

B

A

Soldering Parameters - Wave Soldering

280

260

240

220

200

180

160

140

120

100

80

60

40

20

0

0

Time (Seconds)

© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/19/13

102030405060708090

Preheat Time

Recommended Process Parameters:

Wave Parameter Lead-Free Recommendation

Preheat:

(Depends on Flux Activation Temperature)

Temperature Minimum:
Temperature Maximum:

(Typical Industry Recommendation)

100

° C

150

° C

Preheat Time: 60-180 seconds

Solder Pot Temperature:

260

° C Maximum

Solder Dwell Time: 2-5 seconds

Recommended Hand-Solder Parameters:

100

110

120

130

140

150

160

170

180

190

200

210

220

230

Solder Iron Temperature: 350° C +/- 5°C
Heating Time: 5 seconds max.

Dwell Time

Cooling Time

Note: These devices are not recommended for IR or
Convection Reflow process.

Product Characteristics

0313 MX Pxxxx

Axial Lead & Cartridge Fuses

3AG > Time Lag > 313/315 Series

Materials

Cap: Nickel–plated brass
Leads: Tin–plated Copper

Body: Glass

Terminal Strength

Solderability

MIL-STD-202G, Method 211A, Test
Condition A

Reference IEC 60127 Second Edition
2003-01 Annex A

Cap1: Brand logo, current and voltage

Product Marking

ratings

Cap2: Series and agency approval marks

Dimensions

Measurements displayed in millimeters (inches)

313 000P Series

(cartridge)

6.35±0.3
(.25")

31.75±1.12
(1.25")

Axial Lead Diameter:

0.81±0.05 (.032") for
(0.01A - 15A)

1.02±0.06 (.040") for
(20A - 30A)

315 000P Series

(axial leaded)

6.985±0.3

32.39±1.12
(1.275")

Axial Lead Length:

38.1±3.15 (1.50") TYP.

Axial Lead Material:

Tin-coated copper

(.275")

Operating
Temperature

Thermal Shock

–55ºC to +125ºC

MIL-STD-202G, Method 107G, Test
Condition B: (5 cycles -65°C to +125°C)

Vibration MIL-STD-202G, Method 201 A

MIL-STD-202G, Method 103B, Test

Humidity

Condition A: High RH (95%) and Elevated
temperature (40°C) for 240 hours

Salt Spray

MIL- STD-202G, Method 101D, Test
Condition B

Part Numbering System

Series

Amp Code

Refer to Amp Code column of
Electrical Characteristics Table

Quantity Code

M = 1000

Packaging Code

X = Filler

Lead-free

Packaging

Packaging Option Packaging Specification Quantity

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

Quantity &

Packaging Code

Taping Width

Specifications are subject to change without notice.

© 2013 Littelfuse, Inc.

Revised: 12/19/13