Special Application Fuses
242 Series Barrier Network Fuse
Barrier Network Fuse 242 Series
Description
The 242 Series hazardous area barrier network fuse
offers a range of fuses designed to enable greater safety
operating electronic equipment within potentially explosive
environments.
Features
t PSLSJFS/FU BS X .FFUT# 1500A minimum.
Standards (EN50020)
t BJMBCMFJOCPUIBYJBM W
for hazardous
lead and surface
applications.
mount.
t VQUJOH S )JHIJOUFS
Agency Approvals
rating. Meets the
Agency Agency File Number Ampere Range
Applications
Recognized under the
components program
0.050 - 0.250 A
t ZQFJQSPUFDUFE 5
of Underwriters Laboratories
electrical equipment;
(JDYX2-10480)
Electrical connections
and components, Test
Electrical Characteristics
equipment
% of Ampere
Opening Time
Rating
110% 4 hours, Minimum
300% 10 seconds, Maximum
1000% 0.002 seconds, Maximum
Electrical Characteristics
Agency
Nominal
Ampere Body Nominal
Approvals
Amp Interrupting Cold
Rating Color Melting
Code Rating Resistance
2 2
(A) Coding I t (A Sec.)
(Ohms)
0.050 .050 Red 11.34 0.000103 x
0.080 .080 Green 8.19 0.000214 x
0.100 .100 Blue 3.60 0.000977 x
4000A @
250VAC/VDC
0.160 .160 Violet 3.00 0.00157 x
0.200 .200 Brown 2.68 0.0038 x
0.250 .250 Black 1.6 0.00579 x
2009 Littelfuse, Inc.
Barrier Network Fuse 242 Series
341
Specications are subject to change without notice.
Revised: January 7, 2009
Please refer to www.littelfuse.com/series/242.html for current information.
242 SeriesIntrIntroduction toduction too Cir Circuit Prcuit Prototectionection
Special Application Fuses
Transientology
242 Series Barrier Network Fuse
Average Time Current Curves Dimensions
1.90mm
(.075")
4.60mm
100
(.181")
3.02mm
(.119")
.635mm
(.025")
8.40mm
10
(.331")
1.90mm
(.075")
4.60mm
(.181")
1
3.02mm
(.119")
8.40mm
(.331")
0.1
9.80mm
2.90mm
0.01
3.20mm
0.001
1 10 100 1000
0.1
CURRENT IN AMPERES
Soldering Parameters
Reow Condition Pb Free assembly
t
P
T
P
- Temperature Min (T ) 150C
Critical Zone
s(min)
Ramp-up
T to T
L P
Pre Heat - Temperature Max (T ) 200C
s(max)
T
L
t
- Time (min to max) (t ) 60 180 secs L
s
T
S(max)
Average ramp up rate (Liquidus Temp
5C/second max
Ramp-down
(T ) to peak
L
Preheat
T
S(min)
T to T - Ramp-up Rate 5C/second max
S(max) L
t
S
- Temperature (T ) (Liquidus) 217C
L
Reow
- Temperature (t ) 60 150 seconds
25
L
time to peak temperature
+0/-5
Time
Peak Temperature (T ) 250 C
(t 25C to peak)
P
Time within 5C of actual peak Temp. (t ) 20 40 seconds
p
Ramp-down Rate 5C/second max
Time 25C to peak Temperature (T ) 8 minutes Max.
P
Wave Soldering 260C, 10 seconds max.
Do not exceed 260C
Product Characteristics Part Numbering System
0242.050UAT1
O O
Operating Temperature 40 C to 125 C.
SERIES
AMP CODE
O
Withstands 5 cycles of 55 C to
Thermal Shock
Refer to Amp Code column in the
O
125 C
Electrical Specications table.
Vibration Per MIL-STD-202F
QUANTITY & PACKAGING CODE
HAT1 = 100 pcs, Axial Leaded, Ammo Pack T1 Tape
Insulation Resistance
UAT1 = 500 pcs, Axial Leaded, Ammo Pack T1 Tape
Greater than 10,000 ohms.
(After Opening)
UR = 500 pcs, Surface Mount, Tape & Reel
2009 Littelfuse, Inc.
Barrier Network Fuse 242 Series
342
Specications are subject to change without notice.
Revised: January 7, 2009
Please refer to www.littelfuse.com/series/242.html for current information.
TIME IN SECONDS
.050 A
.080 A
.100 A
.125 A
.160 A
.200 A
.250 A
Temperature