Datasheet - Littelfuse

Axial Lead & Cartridge Fuses
3AB > Slo-Blo® Fuse > 325/326 Series
325/326 Series Lead-Free 3AB, Slo-Blo® Fuse
PS
E
RoHS Pb
Description
The 3AB Slo-Blo® Fuse with ceramic body construction
permits higher interrupting ratings and voltage ratings.
Ideal for applications where high current loads are
expected.
Features
• In accordance with UL
Standard 248-14
• Available in cartridge
and axial lead format
and with various forming
dimensions
Agency Approvals
Agency
PS
E
• RoHS compliant and
Lead-free
Agency File Number
Ampere Range
E10480
0.250A - 10A
E10480
12A - 30A
29862
0.250A - 30A
Cartridge:
NBK 030805-E10480A
NBK 030805-E10480C
NBK 030805-E10480E
NBK 260106-JP1021A
Leaded:
NBK 030805-E10480B
NBK 030805-E10480D
NBK 030805-E10480F
NBK 260106-JP1021B
SU05001-5010
SU05001-5011
SU05001-5012
SU05001-6006
SU05001-6007
1A-3.2A
4A-5A
6.25A-15A
20A-30A
1A-3.2A
4A-5A
6.25A-15A
20A-30A
7-10A
12A, 15A
20A
2.8A-3.2A
2.5A
T 50239752 01
*12A/*15A/*20A
N/A
0.010A - 30A
Applications
Used as supplementary protection in appliance or
utilization equipment to provide individual protection for
components or internal circuits.
Electrical Characteristics for Series
% of Ampere
Rating
Ampere Rating
Opening Time
100%
0.010A – 30A
4 hours, Minimum
135%
0.010A – 30A
1 hour, Maximum
0.010A – 3.2A
5 sec., Min., 30 sec., Max.
4A – 30A
5 sec., Min., 60 sec., Max.
200%
Additional Information
* Approved for cartridge version only
© 2015 Littelfuse, Inc.
Specifications are subject to change without notice. Application testing is strongly recommended.
Revised: 08/11/15
Datasheet
325 Series
Resources
325 Series
Samples
325 Series
Datasheet
326 Series
Resources
326 Series
Samples
326 Series
Axial Lead & Cartridge Fuses
3AB > Slo-Blo® Fuse > 325/326 Series
Electrical Characteristic Specifications by Item
Ampere
Rating
(A)
Voltage
Rating
(V)
.010
0.01
.031
0.031
.062
Agency Approvals
Nominal Cold
Resistance
(Ohms)
Nominal
Melting
I2t (A2 sec)
250
3324.8000
0.00013
x
250
332.5000
0.0110
x
0.062
250
91.7000
0.0276
x
.100
0.1
250
33.5500
0.0870
x
.125
0.125
250
22.4500
0.100
x
.150
0.15
250
15.4500
0.143
x
.175
0.175
250
8.9200
0.350
x
.187
0.187
250
7.7250
0.330
x
.200
0.2
250
6.7700
0.316
.250
0.25
250
4.4300
0.804
x
x
x
Amp
Code
Interrupting
Rating
[email protected]
PS
E
x
.300
0.3
250
3.2200
1.230
x
x
x
.375
0.375
250
2.1550
1.20
x
x
x
.400
0.4
250
1.9350
1.33
x
x
x
.500
0.5
250
1.3000
4.80
x
x
x
x
.600
0.6
250
0.9495
3.90
x
x
.700
0.7
250
0.7215
6.42
x
x
x
.750
0.75
250
0.6410
13.00
x
x
x
.800
0.8
250
0.5725
8.20
001.
1
250
0.3890
16.3
[email protected]
[email protected]
[email protected]
x
x
x
x
x
x
x
01.2
1.2
250
0.2860
22.0
x
x
x
x
1.25
1.25
250
0.2680
40.0
x
x
x
x
01.5
1.5
250
0.1975
59.7
x
x
x
x
01.6
1.6
250
0.1760
66.0
x
x
x
x
002.
2
250
0.1210
118.0
x
x
x
x
02.5
2.5
250
0.0835
185.0
x
x
x
x
x
02.8
2.8
250
0.0695
232.0
x
x
x
x
x
003.
3
250
0.0605
200.0
x
x
x
x
x
0.0539
214.0
x
x
x
x
x
03.2
3.2
250
[email protected]
[email protected]
004.
4
250
0.0761
9.71
x
x
x
x
005.
5
250
0.0522
25.0
x
x
x
x
6.25
6.25
250
0.0346
60.4
x
x
x
x
007.
7
250
0.0227
47.3
x
x
x
x
x
008.
8
250
0.0193
67.1
x
x
x
x
x
010.
10
250
x
x
x
x
[email protected]
[email protected]
[email protected]
0.0132
137
x
0.0067
129
x
012.
12
250
[email protected]
[email protected]
[email protected]
012.*
12
250
[email protected]
0.0011
618
0.0050
245
015.
15
250
[email protected]
[email protected]
[email protected]
015.*
15
250
[email protected]
0.0083
760
250
[email protected]
[email protected]
[email protected]
0.0034
575
020.
20
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
020.*
20
250
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0.0042
2500
x
025.**
25
250
[email protected]
0.0032
4682
x
[email protected]
[email protected]
[email protected]
0.0024
1030
x
x
x
x
0.0019
1690
x
x
x
x
025.
25
250
030.
30
250
*Higher i2t version available. Please add suffix “D” to part numbers. For instance, 0325020.MXDP, 0326020.MXDP
I2t test at 10× rated current.
**Higher I2t version available. Please add suffix “W” to part numbers. For instance, 0325025.MXWP
***Approved for cartridge versions only, and interrupting rating is [email protected] and [email protected]
x***
x
x***
x
x***
x
x
© 2015 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 08/11/15
Axial Lead & Cartridge Fuses
3AB > Slo-Blo® Fuse > 325/326 Series
Average Time Current Curves
.375A
.500A
.750A
1.0A
1.5A
2.0A
2.5A
3.0A
3.5A
4.0A
5.0A
6.25A
7.0A
8.0A
10.0A
12.0A
15.0A
20.0A
25.0A
30.0A
Temperature Re-rating Curve
1000
100
TIME IN SECONDS
10
Note:
Rerating depicted in this curve is in addition to the standard derating of 25%
for continuous operation.
1
0.1
0.01
0.05
0.1
10
1
100
1000
CURRENT IN AMPERES
Soldering Parameters - Wave Soldering
Recommended Process Parameters:
280
260
Wave Parameter
240
220
Lead-Free Recommendation
Preheat:
200
(Depends on Flux Activation Temperature)
180
160
140
120
100
80
60
40
(Typical Industry Recommendation)
Temperature Minimum:
100°C
Temperature Maximum:
Preheat Time:
150°C
60-180 seconds
Solder Pot Temperature:
260°C Maximum
Solder Dwell Time:
2-5 seconds
Time (Seconds)
Cooling Time
Preheat Time
Dwell Time
240
230
220
210
200
190
180
170
160
150
140
130
120
110
90
100
80
70
60
50
40
30
0
0
20
20
10
Temperature (°C) - Measured on bottom side of board
300
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.
© 2015 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 08/11/15
Axial Lead & Cartridge Fuses
3AB > Slo-Blo® Fuse > 325/326 Series
Product Characteristics
Materials
Terminal Strength
Body: Ceramic
Cap: Nickel–plated brass
Leads: Tin–plated Copper
MIL-STD-202, Method 211,
Test Condition A
Thermal Shock
Vibration:
Solderability
MIL-STD-202 Method 208
Product Marking
Cap1:
Brand logo, current and voltage
ratings
Cap2:
Series and agency approval
marks
Humidity
Salt Spray
Part Numbering System
Dimensions
Measurements displayed in millimeters (inches)
326 000P Series
(cartridge)
0325 xxxx M X P
325 000P Series
(axial leaded)
6.35±0.3
(.25")
Series
Amp Code
6.985±0.3
(.275")
31.75±1.12
(1.25")
–55ºC to +125ºC
MIL-STD-202, Method 107, Test
Condition B:(5 cycles - 65ºC to
125ºC)
MIL-STD-202, Method 201
MIL-STD-202, Method 103, Test
Condition A: High RH (95%) and
Elevated temperature(40ºC) for 240
hours
MIL-STD-202, Method 101, Test
Condition B
Operating Temperature
Refer to Amp Code column of
Electrical Characteristics Table
32.72±1.12
(1.288")
Axial Lead Diameter:
0.81±0.05 (.032") for
(0.01A - 15A)
1.02±0.06 (.040") for
(20A - 30A)
Quantity Code
Axial Lead Length:
38.1±3.15 (1.50") TYP.
M = 1000
Packaging Code
Axial Lead Material:
Tin-coated copper
X = Filler
Lead-free
Packaging
Packaging Option
325 Series
Bulk
Bulk
Bulk
Bulk
Bulk
Bulk
Bulk
Bulk
326 Series
Bulk
Bulk
Bulk
Bulk
Bulk
Packaging Specification
Quantity
Quantity &
Packaging Code
Taping Width
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
5
100
1000
1000
1000
1000
1000
1000
VX
HX
MX
MX52
MX52L
MXD
MXF31
MXW
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
5
100
1000
1000
1000
VX
HX
MX
MXCC
MXD
N/A
N/A
N/A
N/A
N/A
© 2015 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 08/11/15