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參數(shù)資料
| 型號(hào)： | 03.5WR |
| 元件分類： | 保險(xiǎn)絲 |
| 英文描述： | ELECTRIC FUSE, 3.5A, 32VAC, 32VDC, 50A (IR), SURFACE MOUNT |
| 封裝： | HALOGEN FREE AND ROHS COMPLIANT |
| 文件頁(yè)數(shù)： | 2/4頁(yè) |
| 文件大?。?/td> | 154K |
| 代理商： | 03.5WR |
Introduction to Circuit Protection
Introduction to Circuit Protection
Transientology
2
2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Surface Mount Fuses
441 Series
Ceramic Fuse > 441 Series
Please refer to www.littelfuse.com/series/441.html for current information.
Average Time Current Curves
0.001
0.01
0.1
1
10
100
1
10
100
2.5A
3.5A
2A
3A
4A
5A
6A
TIME
IN
SECONDS
CURRENT IN AMPERES
Reflow Condition
Pre Heat
-Temperature Min (T
s(min))
150°C
-Temperature Max (T
s(max))
200°C
-Time (Min to Max) (t
s)
Average Ramp-up Rate (LiquidusTemp
(T
L) to peak)
3°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)
PeakTemperature (T
P)
260+0/-5 °C
Time within 5°C of actual peak
Temperature (t
p)
Ramp-down Rate
6°C/second max.
Time 25°C to peakTemperature (T
P)
8 minutes max.
Do not exceed
260°C
Soldering Parameters
Temperature Rerating Curve
40
60
80
100
120
140
-65
-45
-25
-5
15
35
55
75
95
115
135
155
TEMPERATURE (°C)
PE
RC
EN
T
O
F
R
A
T
ING
For continuous operation at 75 degrees celsius, the fuse should be rerated as follows:
I = (0.80)(0.85)I
RAT = (0.68)IRAT
Note:
1. Rerating depicted in this curve is in addition to the standard rerating of 20% for
continuous operation.
Wave Soldering
260°C, 10 seconds max.
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
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