SURFACE MOUNT TELECOM PROTECTORS
Telecom Tube Protector
Specifications
No. 457 Lead Free
This product is not recommended
for new designs. Please refer to
Littelfuse No. 461.
Overcurrent Protection for Telecom Equipment
Packaging
000: 2500 pcs./330mm reel (Blister Tape)
001: 500 pcs./178mm reel (Blister Tape)
Tape width 16mm
Time-Current Characteristic
Transient Tolerant
Applicable Standards
UL-248-14
UL 60950 3rd Edition *
Telcordia GR-1089 *
FCC 47 CFR Part 68
Materials
Housing:
Element:
Ceramic tube
Wire
Terminals: Copper, nickel & silver plated
Operating Temperature
-40 ºC to +125 ºC (consider de-rating)
Approvals
cULus Recognized
Climatic Test
Dimensions (mm)
Damp heat, steady state
Features
40 ºC/ 93%/ 21 days (IEC 60068-1,-2-1,-2-2,-2-78)
10 -0,5
Surge proof for telecom line applications
No need for series resistors (1.25A & 2.00A)
Reduced PCB space requirements
Lead-free construction
Stock Conditions
+10 ºC to +60 ºC
relative humidity ≤ 75 % yearly average,
without dew, maximum value for 30 days - 95 %
Flame resistant ceramic housing
Irreversible physical separation under fault
Highly defined cut-off times
Low internal resistance minimizes line losses
For Reflow Soldering or Soldering Iron
Recommended soldering
240 ºC, 30 s (Reflow)
1,65
1,65
Chip Size 10030
Solderability
acc. to IEC 60068-2-58
235 °C, 2 s
Pad Layout
Soldering Heat Resistance
260 ºC, 10 s (IEC 60068-2-58)
280 ºC, 5 s (IEC 60068-2-58)
WebLinks
Further info see:
www.wickmanngroup.com
Minimum Cross Section, Copper
Conducting path - 0.175 mm2
Further application info see fuseology:
www.wickmanngroup.com/download/
fuseology.pdf
Path thickness - 0.035 mm
Mounting
Avoid circuit traces below the Fuse.
Fuse should not be enclosed in potting
materials.
Operating Conditions
Marking
Logo, Current Rating
Type (I)
100% x I
> 4 h
250% x I
1 ... 120 s
Unit Weight
0.25 g (approx.)
500 mA ... 2.00 A
AC Power Fault Ratings • Permissible continuous operating current is ≤ 80 % at ambient temperature of 23 ºC (73.4 ºF)
UL 60950 3rd Edition *
Telcordia1089 (2ndLevel)
*
Type
Code
Test M1
600V/1.5s
Test M2
600V/5s
Test M3
Test M3
Test 1
277V/15min
Test 2
Test 3
Test 4
600V/15min
600V/30min Max. ∆ T (ºC)
600V/5s
600V/5s
0500
1250
1251
40A
40A
40A
7A
7A
7A
2.2A
2.2A
2.2A
--
120
50
25A
25A
25A
60A
60A
60A
7A
7A
7A
2.2A
2.2A
2.2A
Lightning Surge Specifications
Surge Specification
Surge
Repetitions Waveform ( µsec.) Current (A)
Voltage (V)
Performance Requirement
0500 tested
FCC 47 Part 68
FCC 47 Part 68
Telcordia GR-1089-CORE
Logitudinal Type A
Metallic Type A
First Level Lightning
2
2
10x160
10x560
10x1000
70A
45A
30A
1500
800
1000
Fuse cannot open
Fuse cannot open
Fuse cannot open
50
1250 and 1251 tested
FCC 47 Part 68
FCC 47 Part 68
Telcordia GR-1089-CORE
Telcordia GR-1089-CORE
Longitudinal Type A
Metallic Type A
First Level Lightning
First Level Lighting
2
2
50
50
10x160
10x560
10x1000
2x10
160
115
100
500
1500
800
1.000
2.500
Fuse cannot open
Fuse cannot open
Fuse cannot open
Fuse cannot open
Electrical Specifications
Type Code Current Voltage Rating
AC
Interrupting Rating
Voltage Drop
1.0 x IN
Cold Resistance
0.1 x I
Melting Integral Approvals
10 x IN
250VAC
50/60 Hz
600VAC
max. (mV)
max. (NmΩ)
640
typ. (A2s)
cosϕ=1
0500
1250
1251
500mA
1.25A
2.00A
250V
250V
250V
50A
50A
50A
60A
60A
60A
450
2
•
•
•
250
150
16
18
375
115
*
UL60950 3rd edition and Telcordia 1089 (2nd Level) are device standards, which require
a
testing of the complete device.
Order
Information
Qty.
Order-
Number
Series
457
Type Code Packaging
Specifications are subject
to change without notice
WebSite
Europe Tel: +49 2302 662-107
Americas Tel: +1 404 699-7820
Asia Tel: +852 26 14-1108
China Tel: +86 21 6432 5146
E-mail: sales@wickmann.cn
050912 www.wickmanngroup.com E-mail: sales@wickmann.com
E-mail: service@wickmannusa.com E-mail: sales@wickmann.com.hk
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