Data Sheet - Digi-Key

Axial Lead & Cartridge Fuses
3AG > Time Lag > 373/375 Series
373/375 Series Lead-Free 3AG, Slo-Blo® Fuse
RoHS
Pb
Description
The 3AG Slo-Blo® fuse solves a broad range of application
requirements while offering reliable performance and costeffective circuit protection.
Features
• In accordance with UL
Standard 248-14
• Available in cartridge
and axial lead format
and with various forming
dimensions
Agency Approvals
Agency
• RoHS compliant and
Lead-free
Agency File Number
Ampere Range
Applications
E10480
LR 29862
12A, 15A
Used as supplementary protection in appliance or
utilization equipment to provide individual protection for
components or internal circuits.
Electrical Characteristics by Series
© 2014 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 09/16/14
% of Ampere
Rating
Ampere Rating
Opening Time
100%
12A, 15A
4 hours, Minimum
135%
12A, 15A
1 hour, Maximum
200%
12A, 15A
5 sec., Min.,
60 sec Max
Axial Lead & Cartridge Fuses
3AG > Time Lag > 373/375 Series
Electrical Characteristic Specifications by Item
Ampere Rating
(A)
012.
12
125
015.
15
125
Interrupting
Rating
Nominal
Melting
I2t (A2 sec)
0.0065
1200
x
x
x
0.0050
1870
x
x
x
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Temperature Rerating Curve
Agency Approvals
Nominal Cold
Resistance
(Ohms)
Average Time Current Curves
12A
15A
Amp Code
Voltage Rating
(V)
1000
TIME IN SECONDS
100
10
1
0.1
0.01
0.001
0.01
0.1
1
10
CURRENT IN AMPERES
100
1000
Soldering Parameters - Wave Soldering
Recommended Process Parameters:
280
Wave Parameter
260
Lead-Free Recommendation
Preheat:
240
220
(Depends on Flux Activation Temperature)
200
180
160
140
120
100
80
60
(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
40
Recommended Hand-Solder Parameters:
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
Solder Iron Temperature: 350° C +/- 5°C
Heating Time: 5 seconds max.
Note: These devices are not recommended for IR or
Convection Reflow process.
© 2014 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 09/16/14
Axial Lead & Cartridge Fuses
3AG > Time Lag > 373/375 Series
Product Characteristics
Materials
Body: Glass
Cap: Nickel–plated brass
Leads: Tin–plated Copper
Operating
Temperature
–55ºC to +125ºC
Terminal Strength
MIL-STD-202G, Method 211A, Test
Condition A
Thermal Shock
MIL-STD-202G, Method 107G, Test
Condition B: (5 cycles -65°C to +125°C)
Reference IEC 60127 Second Edition
2003-01 Annex A
Vibration
MIL-STD-202G, Method 201 A
Solderability
Humidity
Product Marking
Cap1: Brand logo, current and voltage
ratings
Cap2: Series and agency approval marks
MIL-STD-202G, Method 103B, Test
Condition A: High RH (95%) and Elevated
temperature (40°C) for 240 hours
Salt Spray
MIL- STD-202G, Method 101D, Test
Condition B
Dimensions
Part Numbering System
037 xxxx M X P
Measurements displayed in millimeters (inches)
373 000P Series
(cartridge)
375 000P Series
(axial leaded)
6.35±0.3
(.25")
Series
Amp Code
6.985±0.3
(.275")
31.75±1.12
(1.25")
Refer to Amp Code column of
Electrical Characteristics Table
32.39±1.12
(1.275")
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 Specification
Quantity
Quantity &
Packaging Code
Taping Width
Bulk
Bulk
N/A
N/A
1000
100
MX
HX
N/A
N/A
Bulk
Bulk
Bulk
N/A
N/A
N/A
1000
100
1000
MX
HX
MXB
N/A
N/A
N/A
Packaging Option
373 Series
375 Series
© 2014 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 09/16/14