參數(shù)資料
型號(hào): 0437.250WR
元件分類: 保險(xiǎn)絲
英文描述: FAST BLOW ELECTRIC FUSE, 0.25A, 125VAC, 125VDC, 50A (IR), SURFACE MOUNT
封裝: HALOGEN FREE AND ROHS COMPLIANT
文件頁數(shù): 2/3頁
文件大?。?/td> 504K
代理商: 0437.250WR
Introduction to Circuit Protection
Introduction to Circuit Protection
Transientology
18
2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Surface Mount Fuses
Please refer to www.littelfuse.com/series/437.html for current information.
437 Series
Ceramic Fuse > 437 Series
Average Time Current Curves
0.001
0.01
0.1
1
10
100
0.1
1
10
100
CURRENT IN AMPERES
T
IM
E
IN
S
E
C
O
N
D
S
.2
50
A
.3
75
A
.50
0A
.750A 1A
2A
7A
1.25 1.5A 1.75
2.5A 3A 3.5A 4A 5A
8A
reflow condition
Pb–freeassembly
pre Heat
-Temperature min (T
s(min))
150°C
-Temperature max (T
s(max))
200°C
-Time (min to max) (t
s)
60–180seconds
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)
60–150seconds
peakTemperature (T
p)
260+0/-5 °C
Time within 5°c of actual peak
Temperature (t
p)
10–30seconds
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)
P
E
R
C
E
N
T
O
F
R
A
T
IN
G
Time
Te
mperatur
e
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
Example:
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.
相關(guān)PDF資料
PDF描述
0437.375WR FAST BLOW ELECTRIC FUSE, 0.375A, 125VAC, 125VDC, 50A (IR), SURFACE MOUNT
0437.500WR FAST BLOW ELECTRIC FUSE, 0.5A, 63VAC, 63VDC, 50A (IR), SURFACE MOUNT
0437.750WR FAST BLOW ELECTRIC FUSE, 0.75A, 63VAC, 63VDC, 50A (IR), SURFACE MOUNT
0437001.WR FAST BLOW ELECTRIC FUSE, 1A, 63VAC, 63VDC, 50A (IR), SURFACE MOUNT
0437002.WR FAST BLOW ELECTRIC FUSE, 2A, 63VAC, 63VDC, 50A (IR), SURFACE MOUNT
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
043728 制造商:ERNI Electronics 功能描述:Conn D-Subminiature M 37 POS 2.76mm Press Fit ST Thru-Hole 37 Terminal 1 Port
0437400001 制造商:Molex 功能描述:3 WY CSTM MC FIT PL HSING
0437436001 功能描述:CONN MOD JACK R/A 6-6 LO PRO SMD RoHS:是 類別:連接器,互連式 >> 模塊 - 插孔 系列:43743 產(chǎn)品目錄繪圖:43860, 95510 Low Profile 特色產(chǎn)品:Modular Jacks and Plugs 標(biāo)準(zhǔn)包裝:1 系列:95501 連接器類型:插孔 位置/觸點(diǎn)數(shù):6p4c(RJ11,RJ14) 行數(shù):1 端口數(shù):1 安裝類型:通孔 方向:90°角(直角) 端子:焊接 屏蔽:無屏蔽 額定值:Cat3 特點(diǎn):板鎖 LED 顏色:不包含 LED 包裝:托盤 翼片方向:下 體座材料:液晶聚合物(LCP),玻璃纖維增強(qiáng)型 觸點(diǎn)材料:磷青銅 觸點(diǎn)表面涂層:金 工作溫度:-40°C ~ 80°C 產(chǎn)品目錄頁面:311 (CN2011-ZH PDF) 其它名稱:095501-2641095501-2641-E09550126410955012641-E95501-2641-E955012641955012641-EWM5569
0437436002 功能描述:CONN MOD JACK 6/6 R/A SMD CAT3 RoHS:是 類別:連接器,互連式 >> 模塊 - 插孔 系列:43743 標(biāo)準(zhǔn)包裝:420 系列:43223 連接器類型:插孔 位置/觸點(diǎn)數(shù):8p10c 行數(shù):1 端口數(shù):3 安裝類型:通孔 方向:90°角(直角) 端子:焊接 屏蔽:無屏蔽 額定值:Cat4 特點(diǎn):板鎖 LED 顏色:不包含 LED 包裝:托盤 翼片方向:下 體座材料:聚酰胺(PA),尼龍,玻璃纖維增強(qiáng)型 觸點(diǎn)材料:磷青銅 觸點(diǎn)表面涂層:金 工作溫度:-40°C ~ 85°C 其它名稱:0432-23-8104043223-810443223-8104432238104
0437436003 功能描述:CONN MOD JACK 6/6 R/A SMD CAT3 RoHS:是 類別:連接器,互連式 >> 模塊 - 插孔 系列:43743 標(biāo)準(zhǔn)包裝:420 系列:43223 連接器類型:插孔 位置/觸點(diǎn)數(shù):8p10c 行數(shù):1 端口數(shù):3 安裝類型:通孔 方向:90°角(直角) 端子:焊接 屏蔽:無屏蔽 額定值:Cat4 特點(diǎn):板鎖 LED 顏色:不包含 LED 包裝:托盤 翼片方向:下 體座材料:聚酰胺(PA),尼龍,玻璃纖維增強(qiáng)型 觸點(diǎn)材料:磷青銅 觸點(diǎn)表面涂層:金 工作溫度:-40°C ~ 85°C 其它名稱:0432-23-8104043223-810443223-8104432238104