Axial Lead & Cartridge Fuses
2AG > Time Lag > 229/230 Series
229/230 Series 2AG, Slo-Blo® Fuse with Indicating Option
Description
Littelfuse 229/230 series Slo-Blo® Fuses are available in
2AG size cartridge or axial lead form, offer tripped fuse
indicating option, and offer features designed to meet
rigorous Telecom industry requirements.
229/230 series product ordered with the tripped fuse
indicating option show discoloration of the glass body
immediately after trip. They offer the same performance
characteristics as standard product, and help to reduce
time locating the tripped fuse and troubleshooting circuit
issues.
The 229/230 series 0.25A - 1.25A range combines
Agency Approvals
Agency Agency File Number Ampere Range
E10480 250mA - 3.5A
LR 29862 250mA - 7A
E10480 4A - 7A
PS
E
NBK200405 - E10480C/D
NBK110512 - E10480A/B
NBK210405 - E10480E/F
1A - 3.5A
4A - 5A
6A - 7A
250mA - 7A
Electrical Characteristics for Series
% of Ampere
Rating
100% 4 hours, Minimum
135% 1 hour, Maximum
200%
Opening Time
3 seconds, Minimum
20 seconds, Maximum
conventional overcurrent protection with ability to
withstand high current, short duration pulses which
complies to short circuit requirements of UL 1459
for telephone equipment. Insulating sleeve option is
also available. Please refer to the Surge Withstand
Specifications section of this document for additional
information.
Features
• Availableincartridge
and axial lead form, and
a wide range of lead
forming dimension and
packaging options
• InaccordancewithUL
Standard 248-14
• RoHScompliantand
Lead-free
• Trippedfuseindicating
option (add suffix ‘S’ to
part number)
Additional Information
PS
E
• Fusesareavailablefor
board washable with
the additional sealing
process (add suffix ‘A’ to
part number)
• Sleevedfuseoption
available (contact
Littelfuse for additional
information)
© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/19/13
Datasheet
229 Series
Datasheet
230 Series
Resources
229 Series
Resources
230 Series
Samples
229 Series
Samples
230 Series
Axial Lead & Cartridge Fuses
2AG > Time Lag > 229/230 Series
Electrical Characteristic Specification by Item
Ampere
Amp
Code
Rating
.250 0.25 250
.350 0.35 250 1.3100 0.490 x x x
.375 0.375 250 1.1685 0.580 x x x
.500 0.5 250 0.6935 1. 16 x x x
.600 0.6 250 0.4805 1.75 x x x
.750 0.75 250 0.3430 2.95 x x x
.800 0.8 250 0.3060 3.45 x x x
0 01. 1 250 0.2120 5.64 x x x x
1.25 1.25 250
01. 5 1. 5 250 0.1077 15.0 x x x x
002. 2 250 0.0698 30.0 x x x x
2.25 2.25 250 0.0567 39.0 x x x x
02.5 2.5 250 0.0502 50.0 x x x x
003. 3 250 0.0383 77.0 x x x x
03.5 3.5 250
004. 4 125
005. 5 125 0.0186 267 x x x x
006. 6 125 0.0141 380 x x x x
007. 7 125 0.0116 464 x x x x
(A)
Voltage
Rating
(V)
Interrupting
Rating
35A@250Vac
10KA@125Vac
10KA@125Vdc
80A@310Vac
100A@250Vac
10KA@125Vac
10KA@125Vdc
80A@310Vac
100A@250Vac
10KA@125Vac
10KA@125Vdc
400A@125Vac
400A@125Vdc
Nominal Cold
Resistance
(Ohms)
2.4300 0.216 x x x
0.1460 9.80 x x x x
0.0312 110.0 x x x x
0.0258 148.0 x x x x
Nominal
Melting
2
t (A2 sec)
I
Agency Approvals
PS
E
Surge Withstand Specificatons
Peak Withstand Current(lp): These fuses will withstand 50 repetitions of a double exponential impulse wave having peak
currents(lp) and peak voltages as listed.
Amp Code
Ampere Rating
.250 0.25
(A)
Interrupting
Rating
Nominal Cold
Resistance
(Ohms)
2.4300 0.216 23.0A 16.6A 12.4A
Nominal
Melting
2
t (A2 sec)
I
10×160 µs
1500V
10×560 µs
800V
10×1000 µs
1000V
.350 0.35 1.3100 0.490 34.0A 25.8A 19.3A
.375 0.375 1.1685 0.580 40.0A 25.4A 19.0A
.500 0.5 0.6935 1.16 60.0A 37.7A 28.2A
.600 0.6 0.4805 1.75 71.0A 47.2A 35.3A
.750 0.75 0.3430 2.95 91.0A 65.5A 49.0A
.800 0.8 0.3060 3.45 104.0A 68.9A 51.6A
60A@600Vac
40A@600Vac
7A@600Vac
2.2A@600Vac
0 01. 1 0.2120 5.64 130A 88.6A 66.3A
1.25 1.25* 0.1460 9.80 162.0A 118.1A 100.0A
* 500A peak, 2500V, 2×10 microseconds, 20 repetitions
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
0.1 110 100 1000
.250A
.375A
.500A
.750A
1.00A
1.50A
2.0A
2 .5A
3.0A
3.5A4A5A
7A
TIME IN SECONDS
CURRENT IN AMPERES
300
240
Temperature (°C) - Measured on bottom side of board
2AG > Time Lag > 229/230 Series
Average Time Current CurvesTemperature Rerating Curve
Soldering Parameters - Wave Soldering
280
260
240
220
200
180
160
140
120
100
80
60
40
20
0
0
102030405060708090
Time (Seconds)
Preheat Time
100
110
120
130
Dwell 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:
140
150
160
170
180
190
200
210
220
230
Solder Iron Temperature: 350° C +/- 5°C
Heating Time: 5 seconds max.
Cooling Time
Note: These devices are not recommended for IR or
Convection Reflow process.
© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/19/13
Product Characteristics
229 000P Series 230 000P Series
4.5
(.177")
14.48
(.57")
14.48
(.57")
4.7 (.184")
.635
(.025")
38.1
(1.50") TYP.
0229 MXPxxxx
Axial Lead & Cartridge Fuses
2AG > Time Lag > 229/230 Series
Materials
Terminal Strength
Solderability
Product Marking
Dimensions
Axial Lead Material: Solder coated Copper.
Body: Glass
Cap: Nickel–plated brass
Leads: Tin–plated Copper
MIL-STD-202G, Method 211A, Test
Condition A
Reference IEC 60127 Second Edition
2003-01 Annex A
Cap1: Brand logo, current and voltage
ratings
Cap2: Series and agency approval
marks
Operating Temperature –55ºC to +125ºC
Thermal Shock
Vibration MIL-STD-202G, Method 201A
Humidity
Salt Spray
MIL-STD-202G, Method 107G,
Test Condition B: (5 cycles -
-65ºC to 125ºC)
MIL-STD-202G, Method
103B, Test Condition A: High
RH (95%) and Elevated
temperature (40ºC) for 240
hours
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
Specifications are subject to change without notice.
© 2013 Littelfuse, Inc.
Revised: 12/19/13
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