Datasheet

Axial Lead & Cartridge Fuses
PICO® > Very Fast-Acting Fuse > 275 Series
275 Series, PICO® Very Fast-Acting Fuse
RoHS
Description
The PICO® Very Fast-Acting Fuse is designed to meet an
extensive array of performance characteristics in a
space-saving subminiature package.
Features
• Very fast-acting
• RoHS compliant
• Small size
• Wide operating
temperature range
• High current rating
(20A- 30A)
Applications
Agency Approvals
Agency
• Low temperature rerating
Agency File Number
Ampere Range
E10480
20A - 30A
• Power supply
• Networking equipment
• PC server
• Storage system
Electrical Characteristics
Additional Information
Datasheet
Resources
% of Ampere
Rating
Ampere Rating
100%
20 - 30
4 Hours, Min.
200%
20 - 30
10 Seconds, Max.
Opening Time
Samples
Electrical Characteristics
Amp Code
Ordering
Number
Max
Voltage
Rating
(V)
20.0
020.
0275020.
32
25.0
025.
0275025.
32
30.0
030.
0275030.
32
Ampere
Rating
(A)
© 2016 Littelfuse, Inc.
Specifications are subject to change without notice. Application testing is strongly recommended.
Revised: 02/12/16
Interrupting
Rating
[email protected]
[email protected]
Agency
Approvals
Nominal Cold
Resistance
(Ohms)
Nominal
Melting
I2t (A2 sec)
0.0033
203
x
0.0024
288
x
0.0020
355
x
Axial Lead & Cartridge Fuses
PICO® > Very Fast-Acting Fuse > 275 Series
Average Time Current Curves
20A
25A
30A
Temperature Re-rating Curve
100
TIME IN SECONDS
10
1
0.1
Note:
Rerating depicted in this curve is in addition to the standard derating of 25% for
continuous operation.
0.01
Soldering Parameters
Recommended Process Parameters:
Wave Parameter
Lead-Free Recommendation
0.001
0.05 0.1
1
10
100
CURRENT IN AMPERES
1000
Preheat:
(Depends on Flux Activation Temperature)
(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
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.
© 2016 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 02/12/16
Axial Lead & Cartridge Fuses
PICO® > Very Fast-Acting Fuse > 275 Series
Product Characteristics
Materials
Transparent Polyvinylidene Fluoride
sleeve covered body, pure tin plated
copper wire leads
Operating Temperature
–55ºC to +125ºC (Consider re-rating)
Solderability
MIL-STD-202, Method 208
Shock
Lead Pull Force
MIL-STD-202, Method 211, Test Condition
A (will withstand a 5lbs. axial pull test)
MIL-STD-202, Method 213, Test
Condition I (100 G’s peak for 6
milliseconds) and per method 2028
(78G’s peak for 11 milliseconds)
Vibration
MIL-STD-202, Method 201 (10–55
Hz); Method 204, Test Condition D
(Vibrations of 10-2000 cps at 20 G’s)
Moisture Resistance
MIL-STD-202, Method 106
Part Numbering System
Dimensions
0275 xxxx M R T1 L
275 000 Series
B
A
B
275
C
DIA.
3/4 A
D
Series
Current Rating
Refer to Amp Code column of
Electrical Characteristics Table
Transparent
Insulating Sleeve
Quantity
M = 1000
V =5
Amperage
20 - 30
Type of Packaging
Dimensions in mm (inches)
A
7.87
(.31")
B
27.78
(1.094")
C
3.38
(.133")
R = Reel
X = Loose Pack
D
1.016
(.040")
Lead Length
T1 = 52.4mm (2.062”)
Blank = For Loose pack (MXL,VXL)
RoHS
Only RoHS parts are available for
275 Series
Packaging
Packaging Option
T1: 52.4mm (2.062") Tape and Reel
The default lead length for loose pack is T1.
© 2016 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 02/12/16
Packaging Specification
Quantity &
Packaging Code
EIA 296
Please refer to available quantities above in “Part
Numbering System”