45705000001 Littelfuse / Wickmann Brand, 45705000001 Datasheet - Page 2

• Manufacturer Part Number: 45705000001
• Description: FUSE TELECOM 500MA 10.1X2.8 SMD
• Manufacturer: Littelfuse / Wickmann Brand
• Series: TTP 457r

Specifications of 45705000001

• Fuse Type: Slow Blow, Time Lag
• Voltage - Rated: 250VAC
• Current: 500mA
• Package / Case: Non-Standard SMD
• Size / Dimension: 0.394" L x 0.110" W x 0.110" H (10.00mm x 2.80mm x 2.80mm)
• Mounting Type: Holder/Surface Mount
• Operating Temperature: -40°C ~ 125°C
• Dc Cold Resistance: 0.64 Ohm
• Melting I²t: 2
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Color: -
• Other names: 4570500000; 4570500000

S
Time-Current Characteristics
031024
031024
031024
031024
031024
Thermal De-rating
140
120
100
I
Rated
80
60
URFACE
-40
De-rating (%)
Web:
TTP / No. 457
www.wickmannusa.com
-20
M
OUNT
Ambient Temperature (°C)
0
T
ELECOM
20
23
o
C
5
0.5
• Europe
40
E-mail: [e-mail]
P
A
ROTECTORS
1
Tel: [phone]
60
B
2
C
5
80
I-t Characteristics
B)
C)
Subject to change without notice. To ensure
compliance with respective telecom standards,
the 457 shall be tested in the actual application.
A)
10
I
Fault
457-0500
457-1250
457-1251
100
100
/ (Amps)
2
• Americas
E-mail: [e-mail]
Thermal De-rating Calculations
1) Estimate the maximum continuous ambient temperature measured 1cm
2) Determine the De-rating factor (%) from the curve above.
3) To calculate the minimum fuse current rating (I rated ) required, divide
4) These calculations pertain only to fuse de-rating under varying ambient
from the fuse.
the measured continuous operating current of the circuit by the De-
rating factor (%):
temperatures. Additional calculations for determining minimum fuse
rating may also be required. Please also consider the applicable fuse
standard (IEC vs. UL) and the presence of inrush or pulsing currents.
I
5
min. fuse current rating
Tel: [phone]
100
2
5
>
1000
I
% De-rating
Operating (Ambient)
W I C K M A N N
• Asia
E-mail: [e-mail]
Tel: [phone]