Axial Lead & Cartridge Fuses
5×20 mm > Audio & Medical > 285 Series
285 Series, 5×20 mm, Audio & Medical Fuse
Description
RoHS
Pb
PS
E
5×20mm fuse with gold or rhodium-plated caps and
colourful ceramic body. Designed to IEC Cartridge Fuse
standard.
Features
• Desiged to International (IEC) Standard for use globally.
Meets the IEC 60127-2, Sheet 5 specification for time-
lag fuses
• Available in Cartridge form
• RoHS compliant and lead-free
Agency Approvals
Agency
Agency File Number
Ampere Range
• Low magnetic susceptibility
Applications
Ideal for supplementary protection in appliances or
utilization equipment, especially in audio and medical
equipment.
Electrical Characteristics for Series
% of Ampere
Rating
Ampere
Rating
0.125A - 0.5A
1A - 3.15A
5A - 6.3A
8A - 20A
0.125A - 0.5A
210%
1A - 3.15A
5A - 6.3A
8A - 20A
0.125A - 0.5A
275%
1A - 3.15A
5A - 6.3A
8A - 20A
0.125A - 0.5A
400%
1A - 3.15A
5A - 6.3A
8A - 20A
0.125A - 0.5A
1000%
1A - 3.15A
5A - 6.3A
8A - 20A
Opening Time
60 minutes, Minimum
60 minutes, Minimum
60 minutes, Minimum
30 minutes, Minimum
30 minutes, Maximum
30 minutes, Maximum
30 minutes, Maximum
30 minutes, Maximum
250 ms. Min.; 80 sec. Max.
750 ms. Min.; 80 sec. Max.
750 ms. Min.; 80 sec. Max.
750 ms. Min.; 80 sec. Max.
50 ms. Min.; 5 sec. Max.
95 ms. Min.; 5 sec. Max.
150 ms. Min.; 5 sec. Max.
150 ms. Min.; 5 sec. Max.
50 ms. Min.; 150 ms. Max.
10 ms. Min.; 150 ms. Max.
10 ms. Min.; 150 ms. Max.
10 ms. Min.; 150 ms. Max.
PS
E
NBK080205-E10480A
NBK250702-E10480E
NBK100408-JP1021A
1A – 5A
6.3A & 15A
20A
Additional Information
Datasheet
Resources
Samples
Accessories
150%
For recommended fuse accessories for this product series,
see ‘Recommended
Accessories’
section.
© 2017 Littelfuse, Inc.
Specifications are subject to change without notice. Application testing is strongly recommended.
Revised: 08/23/17
Axial Lead & Cartridge Fuses
5×20 mm > Audio & Medical > 285 Series
Electrical Characteristics Specification by Item
Amp
Rating
(A)
0.125
0.315
0.5
1
1.6
2
2.5
3.15
5
6.3
8
10
15
20
Voltage
Rating
(V)
250
250
250
250
250
250
250
250
250
250
250
250
250
250
500A @ 250VAC
400A @ 250VAC
1500A @
250VAC
Nominal Cold
Resistance
(Ohms)
13.1240
0.9275
1.1215
0.1455
0.0706
0.0546
0.0384
0.0269
0.0141
0.0107
0.0089
0.0065
0.0031
0.0024
Nominal
Melting
I
2
t (A
2
Sec.)
0.028
0.625
0.3
1.6
7
.168
10.8
25.625
51.597
70
130.977
224
361
1305
3225.6
Nominal
Voltage Drop
at Rated
Current (mV)
2600
1100
850
350
200
190
180
140
100
100
100
100
100
100
Nominal
Power
Dissipation
at Rated
Current (W)
1.6
1.6
1.6
2.5
2.5
2.5
2.5
4
4
4
4
4
4
4
x
x
x
x
x
x
x
x
x
x
x
Agency
Approvals
PS
E
Amp Code
Interrupting
Rating
.125
.315
.500
001.
01.6
002.
02.5
3.15
005.
06.3
008.
010.
015.
020.
Temperature Re-rating Curve
Average Time Current Curves
28501.6
285002.
28502.5
2853.15
285005.
28506.3.
285008.
285010.
285015.
10
285.125
285.315
285.500
285001.
285020.
100
140
10000
PERCENT OF RATING
120
100
80
60
40
20
-60˚C -40˚C -20˚C
-76˚F -40˚F -4˚F
0˚C
32˚F
20˚C 40˚C 60˚C 80˚C 100˚C 120˚C
68˚F -104˚F 140˚F 176˚F 212˚F 248˚F
Time (seconds)
100
1000
25˚C
10
1
AMBIENT TEMPERATURE
0.1
0.01
0.001
0.01
0.1
1
1000
Amps
© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 08/23/17
Axial Lead & Cartridge Fuses
5×20 mm > Audio & Medical > 285 Series
Product Characteristics
Materials
Terminal
Strength
Product Marking
Body : Ceramic
Cap : Gold / Rhodium-plated brass
MIL- STD-202, Method 211,
Test condition A
Cap 1: Brand logo, current and voltage rating
Cap 2: Agency approval markings
Operating
Temperature
Thermal Shock
Vibration
Humidity
Salt Spray
–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 temp. (40ºC) for 240 hours
MIL- STD-202, Method 101,
Test condition B
Dimensions
Part Numbering System
20+0.5
5.2+0.1
-0.2
5.1+0.6
5.1+0.6
0285.125 XP/XRP
to
0285020 XP/XRP
0285 xxxx M X (R) P
Series
Current Rating Code
Refer to Amp Code column of
Electrical Characteristics Table
Lead Free
Option Codes
Blank = Gold-plated caps
R = Rhodium-plated caps
All dimensions in mm
Quantity Code
M = 1000
H = 100
Package Code
X = Filler
Packaging
Packaging Option
285 Series
Bulk
Bulk
Packaging Specification
N/A
N/A
Quantity
100
1000
Quantity &
Packaging Code
HX
MX
Taping Width
N/A
N/A
Recommended Accessories
Accessory
Type
Series
345_ISF
Holder
345
830
520
Block
646
658
520_W
Clip
111
445
Description
Panel Mount Shock-Safe Fuseholder
Shock-Safe Fuseholder with PC Mount, Solder Mount and Panel Mount options
PC Mount Shock-Safe Miniature Fuseholder
Metric OMNI-BLOK® Fuse Block
PC Mount Miniature Fuse Block
Surface Mount Miniature Fuse Block
PC Mount Miniature Fuse Clip
PC Board Mount Fuse Clip
PC Board Mount Fuse Clip
250
Max
Application
Voltage
Max
Application
Amperage
10
20
16
10
6.3
10
6.3
10
10
Notes:
1. Do not use in applications above rating.
2. Please refer to fuseholder data sheet for specific re-rating information.
3. Please contact factory for applications greater than the max voltage and amperage shown.
Disclaimer Notice - Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and
test each product selected for their own applications. Littelfuse products are not designed for, and may not be used in, all applications.
Read complete Disclaimer Notice at
www.littelfuse.com/disclaimer-electronics.
© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 08/23/17
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