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參數(shù)資料
| 型號： | 457 |
| 廠商： | Littelfuse, Inc. |
| 英文描述： | SURFACE MOUNT TELECOM PROTECTORS |
| 中文描述： | 表面貼裝電信保護器 |
| 文件頁數(shù)： | 1/2頁 |
| 文件大?。?/td> | 85K |
| 代理商： | 457 |
050912
WebSite
www.wickmanngroup.com E-mail: sales@wickmann.com
Europe
Tel: +49 2302 662-107
Americas
Tel: +1 404 699-7820
E-mail: service@wickmannusa.com
Asia
Tel: +852 26 14-1108
E-mail: sales@wickmann.com.hk
China
Tel: +86 21 6432 5146
E-mail: sales@wickmann.cn
1,65
2
1,65
10 -0,5
c
Type (I) 100% x I
500 mA ... 2.00 A > 4 h 1 ... 120 s
AC Power Fault Ratings Permissible continuous operating current is
≤
80
250% x I
S
URFACE
No. 457 Lead Free
This product is not recommended
for new designs. Please refer to
Littelfuse No. 461.
M
OUNT
T
ELECOM
P
ROTECTORS
Dimensions (mm)
Operating Conditions
Order
Information
Qty.
Order-
Number 457
Series
ype Code Packaging
elecom Tube Protector
Overcurrent Protection for Telecom Equipment
Time-Current Characteristic
Transient Tolerant
Applicable Standards
UL-248-14
UL 60950 3rd Edition *
Telcordia GR-1089 *
FCC 47 CFR Part 68
Approvals
cULus Recognized
Features
Surge proof for telecom line applications
No need for series resistors (1.25A & 2.00A)
Reduced PCB space requirements
Lead-free construction
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
WebLinks
Further info see:
www.wickmanngroup.com
Further application info see fuseology:
www.wickmanngroup.com/download/
fuseology.pdf
Pad Layout
Chip Size 10030
Specifications
Packaging
000: 2500 pcs./330mm reel (Blister Tape)
001: 500 pcs./178mm reel (Blister Tape)
Tape width 16mm
Materials
Housing:
Ceramic tube
Element:
Wire
Terminals:
Copper, nickel & silver plated
Operating Temperature
-40 oC to +125 oC (consider de-rating)
Climatic Test
Damp heat, steady state
40 oC/ 93%/ 21 days (IEC 60068-1,-2-1,-2-2,-2-78)
Stock Conditions
+10 oC to +60 oC
relative humidity
≤
75 % yearly average,
without dew, maximum value for 30 days - 95 %
Recommended soldering
240 oC, 30 s (Reflow)
Solderability
acc. to IEC 60068-2-58
235 °C, 2 s
Soldering Heat Resistance
260 oC, 10 s (IEC 60068-2-58)
280 oC, 5 s (IEC 60068-2-58)
Minimum Cross Section, Copper
Conducting path - 0.175 mm
2
Path thickness - 0.035 mm
Mounting
Avoid circuit traces below the Fuse.
Fuse should not be enclosed in potting
materials.
Marking
Logo, Current Rating
Unit Weight
0.25 g (approx.)
Lightning Surge Specifications
Surge Specification
Specifications are subject
to change without notice
Electrical Specifications
Type Code
Surge
Repetitions
Waveform (
μ
sec.) Current (A)
0500 tested
Voltage (V)
Performance Requirement
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
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
1250 and 1251 tested
Current
Voltage Rating
AC
Interrupting Rating
250VAC
50/60 Hz
50A
50A
50A
Voltage Drop
1.0 x I
max. (mV)
450
250
375
Cold Resistance
0.1 x I
max. (m
)
640
150
115
Melting Integral
10 x I
N
typ. (A
2
s)
2
16
18
Approvals
600VAC
cos
=1
60A
60A
60A
0500
1250
1251
500mA
1.25A
2.00A
250V
250V
250V
UL 60950 3rd Edition *
Test M2
600V/5s
7A
7A
7A
Telcordia1089 (2nd Level)
*
Test 2
600V/5s
60A
60A
60A
Type
Code
0500
1250
1251
Test M1
600V/1.5s
40A
40A
40A
Test M3
600V/30min
2.2A
2.2A
2.2A
Test M3
Max.
T (
o
C)
--
120
50
Test 1
Test 3
600V/5s
7A
7A
7A
Test 4
600V/15min
2.2A
2.2A
2.2A
277V/15min
25A
25A
25A
oC (73.4 oF)
* UL60950 3rd edition and Telcordia 1089 (2nd Level) are device standards, which require a testing of the complete device.
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