Special Application Fuses
PICO
®
259-UL913 Series Intrinsically Safe Fuse for Hazardous Locations
PICO
®
259-UL913 Series Intrinsically Safe Fuse
Description
RoHS
The 259-UL913 Series offers a range of encapsulated fuses
certified under the UL 913, the standard for intrinsically safe
electrical equipment, to operate in hazardous locations. Ideal for
use in the oil, gas, mine, chemical process, and pharmaceutical
industries, the 259-UL913 fuse was designed to limit the energy
and temperature generated during its operation. In addition
to UL913, these fuses meet ATEX and IECEx requirements.
The fuse design and its encapsulant are suitable for use in
intrinsically safe appartatus and associated apparatus for voltage
not exceeding 125V rms (190V peak).
Features
• Encapsulated and sealed
(1mm minimum)
Ampere Range
Agency Approvals
Agency
Agency File Number
• Global hazardous location
certifications
• 0.62A - 5A range options
• Designed to operate
within hazardous
environments
Applications
• Testing, measuring or processing electronic and
electrical equipment
Reference Standards
Agency
Standards
Baseefa02ATEX0071U
E10480
E358130
IECEx BAS 10.0098U
0.62A - 5A
0.62A - 5A
0.62A - 5A
Electrical Characteristics for Series
% of Ampere
Rating
100%
200%
Opening Time
4 Hours, Minimum
5 Seconds, Maximum
ATEX
IECEx
EN 60079-0, EN 60079-11
IEC 60079-0, IEC 60079-11
Electrical Specifications by Items
Ampere
Rating
(A)
0.062
0.125
0.250
0.375
0.500
0.750
1.00
3.00
5.00
Amp
Code
.062
.125
.250
.375
.500
.750
001.
003.
005.
50A @ 125 VAC
300A @ 63 VDC
50A @ 125 VAC
300A @ 125 VDC
Interrupting
Rating
Nominal
Melting
I
2
t (A
2
Sec.)
0.00011
0.0012
0.0095
0.025
0.0598
0.153
0.256
1.27
4.14
Minimum Cold Minimum Cold
Resistance at
Resistance at
-20°C (Ohms)
-40°C (Ohms)
4.89
1.35
0.51
0.32
0.24
0.14
0.10
0.03
0.01
4.39
1.26
0.48
0.29
0.22
0.12
0.07
0.01
0.005
Nominal Cold
Resistance at
25°C (Ohms)
7
.00
1.70
0.67
0.395
0.302
0.175
0.128
0.03
0.0158
x
x
x
x
x
x
x
x
x
Agency Approvals
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
Schedule of limitations:
1) The fuse must be mounted in such a way that creepage and clearance distances aren’t
impaired in any way.
2) The fuse is suitable for use in intrinsically safe equipment for voltages not exceeding
190V peak.
3) Maximum surface temperature rise at 170% rated current: ≤750mA=40ºC, 1A=55ºC,
3A=118ºC and 5A=135ºC.
Additional Information
Datasheet
© 2016 Littelfuse, Inc.
Specifications are subject to change without notice. Application testing is strongly recommended.
Revised: 01/06/16
Resources
Samples
Special Application Fuses
PICO
®
259-UL913 Series Intrinsically Safe Fuse for Hazardous Locations
259 Series
Product Characteristics
Operating Temperature
Current Rating
≤ 0.750 A
1A
3A
5A
Ambient Temperature
- 40ºC to +81ºC
- 40ºC to +73ºC
- 40ºC to +74ºC
- 40ºC to +45ºC
TIME IN SECONDS
10
Average Time Current Curves
.250 A
.375 A
.500 A
.750 A
1A
.062 A
.125 A
3.15 A
5A
100
Notes:
1. Any use of the 259-UL913 Series fuse outside of the ambient temperature ranges
specified in the table is subject to additional investigation.
2. Specified ambient temperature range is for intrinsic safety certification.
1
Materials
Operating
Temperature
Thermal Shock
Vibration
Insulation Resistance
(After Opening)
Body : Polyamide
Terminals - Tin Plated Copper Alloy
Maximum operating temperature of
Materials is 130°C
For operating temperature see table
above (Consider re-rating)
Withstands 5 cycles of – 55°C to 125°C
Per MIL
-STD-202, Method 201
0.1
0.01
Greater than 10,000 ohms
(at 250V DC)
0.001
0.1
1
100
10
CURRENT IN AMPERES
1000
Temperature Re-rating Curve
Part Numbering System
0259.062
M X913
SERIES
AMP Code
The dot is poisitioned before the
Packaging Suffix with whole ratings
and within the numbering sequence for
fractional ratings. Refer to Amp Code
column in the Electrical Specifications
table.
1 amp product is
0259001.MX913
(.062 amp product shown).
Example:
PACKAGING Code
Note:
1. Re-rating depicted in this curve is in addition to the standard derating of 25% for
continuous operation.
M = Bulk pack, 1000 pcs
T = Bulk pack, 10 pcs
Dimensions
(.512")
13
mm
(.315")
8
mm
(.197")
5
mm
(.394")
10
mm
Soldering Parameters
Recommended Process Parameters:
Wave Parameter
Preheat:
(Depends on Flux Activation Temperature)
(Typical Industry Recommendation)
Lead-Free Recommendation
(.025")
.635
mm
Temperature Minimum:
Temperature Maximum:
Preheat Time:
Solder Pot Temperature:
Solder Dwell Time:
100
°
C
150
°
C
60-180 seconds
260
°
C Maximum
2-5 seconds
Packaging
Packaging
Option
Packaging
Specification
Quantity
Quantity & Packaging
Code
M = Bulk 1000 pieces,
T = Bulk 10 pieces
Please refer to available
quantities above in “Part
Numbering System”
Recommended Hand Soldering 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
Bulk
Bulk
N/A
N/A
1000
10
© 2016 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 01/06/16
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