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ALFR-2 PDF预览

ALFR-2

更新时间： 2024-11-28 03:18:35
品牌 Logo 应用领域
TTELEC 电信
页数 文件大小 规格书
2页 136K
描述
Telecommunications Line Feed Resistors

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中文翻译

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ALFR-2 技术参数

生命周期：Obsolete包装说明：,
Reach Compliance Code：unknownECCN代码：EAR99
HTS代码：8533.21.00.80风险等级：5.73
其他特性：AVAILABLE ALONG WITH FUSE; FLAME PROOF安装特点：THROUGH HOLE MOUNT
端子数量：2封装形状：RECTANGULAR PACKAGE
电阻器类型：FIXED RESISTOR表面贴装：NO
技术：WIRE WOUND端子形状：WIRE
Base Number Matches：1

ALFR-2 数据手册

 浏览型号ALFR-2的Datasheet PDF文件第2页 
Telecommunications  
Line Feed Resistors  
Welwyn Components  
ALFR-2 Series  
• Meets all test and specifications of  
GR-1089 & UL-1459  
• Resistance IR8 to 1K6  
• Tolerance down to 1%  
• Withstands lightning surges  
• Flameproof inorganic construction  
• Auto-insertable, small size  
• Meets FCC, EIA and UL requirements  
• UL-497A approved  
Electrical Data  
Maximum  
Power rating  
watts  
2
Temperature coefficient  
Tolerance  
ppm/°C  
%
50  
1, 5  
Load life (1000 hours)  
∆R%  
∆R%  
∆R%  
∆R%  
ohms  
1
Temperature cycling  
1
Short time overload (5 x RW for 10 sec.)  
Moisture load  
1
1
Resistance range  
IR8 to 1K6  
Lightning surge (1000 V-10/1000 µsec)  
25 negative & 25 positive surges (2 minute intervals)  
∆R%  
2
The standard ALFR-2 contains a 128°C thermal fuse. For faster fusing characteristics a 110°C fuse is available.  
Physical Data  
Dimensions (Inches)  
L
W
A
B
C
T
E
F
G
H
K
L1  
D1Ø  
0.023  
Dia.  
D2Ø  
0.032  
Dia.  
1.045  
0.020  
0.450  
0.020  
0.025  
Typ.  
0.100  
0.015  
0.125  
0.020  
0.030  
0.150  
0.020  
0.070  
Typ.  
0.138  
0.020  
0.265  
0.020  
0.700  
0.015  
0.900  
0.015  
L
T
C
W
1
4
3
2
G
E
H
D
1
A
D
2
B
K
F
L
1
The four (4) terminal leads shall be in line to a tolerance to  
0.015 inch. The lead spacing dimensions as specified, shall  
be measured from the tip of the lead to the top of the lead.  
The leads may have a 15° draft relative to the protector body.  
In circuit applications terminal leads 1 and 2 shall be  
connected together externally and leads 3 and 4 used for  
connection of the device. For proper performance and  
reduction of safety hazards the current flow should be from  
lead 3 to 4.  
General Note  
Welwyn Components reserves the right to make changes in product specification without notice or liability.  
All information is subject to Welwyn’s own data and is considered accurate at time of going to print.  
A subsidiary of  
TT electronics plc  
© Welwyn Components Limited · Bedlington, Northumberland NE22 7AA, UK  
Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com  
Issue B · 03.02  
117  
12

中文翻译

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