S
URFACE
M
OUNT
T
ELECOM
P
ROTECTORS
WICKMANN
TTP / No. 457
Protector, 250V/600V
V/60
Telecom Protector, 250V/600V Specifications
Telecom
Overcurrent Protection for Telecom Equipment
Time-Current Characteristic
Transient Tolerant
Packaging Code and Info
000: 2500 pcs./330mm reel (Blister Tape)
001: 500 pcs./178mm reel (Blister Tape)
Applicable Standards
UL 1950/60950 3rd Edition
Telcordia (Bellcore) GR-1089
FCC 47 CFR Part 68
ITU-T K. 20, K.21 and K.45.
Materials
Housing:
Element:
Terminals:
Ceramic tube
Wire
Copper, nickel & silver plated
Temperature
Operating Temperature
-40ºC to +125ºC (consider de-rating)
Approvals
cULus Recognized: File No. E 67006
Test
Climatic Test
Damp heat, steady state
40ºC/93%/21 days (IEC 60068-2-3)
Features
Dimensions (mm)
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
Flame resistant ceramic housing
Irreversible physical separation under fault
Highly defined cut-off times
Low internal resistance minimizes line losses
Stock Conditions
+10ºC to +60ºC
relative humidity
≤
75% yearly average,
without dew, maximum value for 30 days - 95%
2,8 ±0,1
Recommended Soldering
260ºC, 3 sec. (Wave)
240ºC, 30 sec. (Reflow)
1,65
1,65
Solderability
acc. to IEC 60068-2-58
235ºC, 2 sec.
Chip Size 10030
WebLinks
Data Sheet - latest version
www.wickmannusa.com/products/457.pdf
Soldering Heat Resistance
260ºC, 10 sec. (IEC 60068-2-58)
280ºC, 5 sec. (IEC 60068-2-58)
Pad Layout
3,7
5,2
3,7
Approval Certificates
www.wickmannusa.com/approvals
Recommended Solder Glue
Grace Amicon 125 F or equivalent
Packaging
www.wickmannusa.com/pack
Minimum Cross Section, Copper
Conducting path - 0.175mm
2
Path thickness - 0.035mm
4
Telcom Standards
www.wickmannusa.com/download/teleguide.pdf
Mounting
Avoid circuit traces below the 457.
457 should not be enclosed in potting materials.
Operating Conditions
Type (I)
500mA ... 2.00A
Marking
250% x I
1 ... 120s
Logo, Current Rating
100% x I
> 4h
Unit Weight
Weight
0.25g (approx.)
80%
Permissible continuous operating current is
≤
80% at ambient temperature of 23ºC (73.4ºF).
Current
Voltage
Interrupting Rating
Voltage Drop
Cold Resistance
Type
Rating
1.0 x I
Rated
0.1 x I
Rated
50-60Hz, cos
ϕ
= 1.0
Code
250VAC 600VAC
max. (mV)
max. (m
Ω
)
0500
1250
1251
500mA
1.25A
2.00A
250VAC
250VAC
250VAC
50A
50A
50A
60A
60A
60A
450
250
375
640
150
115
Melting Integral
10 x I
Rated
typ. (A
2
s)
2
16
18
Approval
cURus
•
•
•
AC Power Fault Ratings
UL 1950/60950 3rd Edition
Type
Test M1
Test M2
Test M3
Test M3
Code
600V/1.5s
600V/5s
600V/30min Max.
∆
T (
º
C)
0500
1250
1251
40A
40A
40A
7A
7A
7A
2.2A
2.2A
2.2A
--
120
50
Test 1
277V/15min
25A
25A
25A
Telcordia GR-1089 (2nd Level)
Test 2
Test 3
600V/5s
600V/5s
60A
60A
60A
7A
7A
7A
Test 4
600V/15min
2.2A
2.2A
2.2A
Lightning Surge Ratings
FCC 47 CFR Part 68
Type
Type A Metallic
Type A Longitudinal
Code
800V/10x560µs/2 pulses 1500V/10x160µs/2 pulses
0500
1250
1
1251
1
45A
115A
115A
70A
160A
160A
Telcordia GR-1089 (1st Level)
Test 3
Test 4
1000V/10x1000µs/50 pulses
2500V/2x10µs/20 pulses
30A
100A
100A
N/A
500A
500A
1
Contact WICKMANN for lightning surge test data per European telecom equipment standards - ITU-T K. 20, K.21 and K.45.
Order
Information
031024
Qty.
Qty.
Order-
Order-
Number
Series
457
Type Code
Pack. Code
Specifications are subject to change without notice.
Web:
www.wickmannusa.com
•
Europe
Tel: +49 (2302) 662-107
E-mail: sales@wickmann.com
•
Americas
Tel: +1 (404) 699-7820
E-mail: service@wickmannusa.com
•
Asia
Tel: +852 26 14-1108
E-mail: sales@wickmann.com.hk
S
URFACE
M
OUNT
T
ELECOM
P
ROTECTORS
WICKMANN
TTP / No.
457
Time-Current Characteristics
0
10
,00
0
A
BC
I-t Characteristics
A)
457-0500
B)
457-1250
C)
457-1251
Time (sec.)
10
,00
0
1 ,0
00
0
10
10
1
0 .1
0 .0
1
0 .0
01
Subject to change without notice. To ensure
compliance with respective telecom standards,
the 457 shall be tested in the actual application.
5
0.5
1
2
5
10
2
5
100
2
5
1000
I
Fault
/ (Amps)
Thermal De-rating
I
Rated
De-rating (%)
140
Thermal De-rating Calculations
1) Estimate the maximum continuous ambient temperature measured 1cm
from the fuse.
2) Determine the De-rating factor (%) from the curve above.
3) To calculate the minimum fuse current rating (Irated ) required, divide
the measured continuous operating current of the circuit by the De-
rating factor (%):
I
min. fuse current rating
>
I
Operating (Ambient)
% De-rating
120
100
80
23
o
C
60
-40
-20
0
20
40
60
80
4) These calculations pertain only to fuse de-rating under varying ambient
temperatures. Additional calculations for determining minimum fuse
rating may also be required. Please also consider the applicable fuse
100
100
standard (IEC vs. UL) and the presence of inrush or pulsing currents.
Ambient Temperature (°C)
•
Europe
Tel: +49 (2302) 662-107
E-mail: sales@wickmann.com
•
Americas
Tel: +1 (404) 699-7820
E-mail: service@wickmannusa.com
•
Asia
Tel: +852 26 14-1108
E-mail: sales@wickmann.com.hk
031024
Web:
www.wickmannusa.com
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