参数资料
型号: 0157.500DR
元件分类: 保险丝
英文描述: VERY FAST BLOW ELECTRIC FUSE, 0.5A, 125VAC, 125VDC, 50A (IR), SURFACE MOUNT
封装: HALOGEN FREE AND ROHS COMPLIANT
文件页数: 2/4页
文件大小: 164K
代理商: 0157.500DR
Introduction to Circuit Protection
Introduction to Circuit Protection
Transientology
96
2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Surface Mount Fuses
157 Series
NANO2 > 157 Fuse and Holder Combination
Please refer to www.littelfuse.com/series/157.html for current information.
Average Time Current Curves
Reflow Condition
Pb – Free assembly
Pre Heat
-Temperature Min (T
s(min))
150°C
-Temperature Max (T
s(max))
200°C
-Time (Min to Max) (t
s)
60 – 120 secs
Average ramp up rate (LiquidusTemp
(T
L) to peak
5°C/second max.
T
S(max) to TL - Ramp-up Rate
5°C/second max.
Reflow
-Temperature (T
L) (Liquidus)
217°C
-Temperature (t
L)
60 – 90 seconds
PeakTemperature (T
P)
250+0/-5 °C
Time within 5°C of actual peak
Temperature (t
p)
20 – 40 seconds
Ramp-down Rate
5°C/second max.
Time 25°C to peakTemperature (T
P)
8 minutes max.
Do not exceed
260°C
Soldering Parameters
Temperature Rerating Curve
0.001
0.010
0.100
1.000
10.000
0.01
0.1
1
10
100
TIME
IN
SECONDS
CURRENT IN AMPS
0.75
A
0.5
A
0.062A
10.0
A
8.0
A
7.0
A
6.30
A
5.0
A
4.0
A
3.50
A
3.0
A
2.50
A
2.0
A
1.50
A
1.0
A
0.375
A
0.25
A
0.2
A
0.125
A
0.315A
Note:
1. Derating depicted in this curve is in addition to the standard derating of 25% for
continuous operation.
Time
T
e
mperature
TP
TL
TS(max)
TS(min)
25
tP
tL
tS
time to peak temperature
(t 25C to peak)
Ramp-down
Ramp-up
Preheat
Critical Zone
TL to TP
相关PDF资料
PDF描述
0157.750DR VERY FAST BLOW ELECTRIC FUSE, 0.75A, 125VAC, 125VDC, 50A (IR), SURFACE MOUNT
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