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F20J250 PDF预览

F20J250

更新时间: 2024-11-09 20:58:39
品牌 Logo 应用领域
OHMITE 电阻器
页数 文件大小 规格书
3页 271K
描述
Fixed Resistor, Wire Wound, 20W, 250ohm, 815V, 5% +/-Tol, -260,260ppm/Cel

F20J250 技术参数

是否Rohs认证: 不符合生命周期:Active
包装说明:Chassis Mount,Reach Compliance Code:compliant
风险等级:5.57构造:All-Welded
端子数量:2最高工作温度:350 °C
最低工作温度:25 °C封装直径:9.525 mm
封装长度:50.8 mm封装形式:Chassis Mount
额定功率耗散 (P):20 W电阻:250 Ω
电阻器类型:FIXED RESISTOR子类别:Fixed Resistors
技术:WIRE WOUND温度系数:-260,260 ppm/ °C
容差:5%工作电压:815 V
Base Number Matches:1

F20J250 数据手册

 浏览型号F20J250的Datasheet PDF文件第2页浏览型号F20J250的Datasheet PDF文件第3页 
250 Series  
‘Thin’ Stackohm®  
Vitreous Enamel Power  
F ꢁ at u ꢀ ꢁ S  
Whenꢀlimitedꢀspaceꢀisꢀaꢀconsideration,ꢀchooseꢀ  
Ohmite’sꢀ“thin”ꢀstackableꢀ250ꢀTypeꢀresistors.ꢀTheseꢀ  
oval-shapedꢀceramic-coreꢀresistorsꢀfeatureꢀaꢀlowꢀ  
profileꢀtoꢀpermitꢀinstallationꢀinꢀspacesꢀwithꢀheightꢀ  
restrictions.ꢀTheyꢀareꢀalsoꢀequippedꢀwithꢀintegralꢀ  
mountingꢀbracketsꢀsoꢀtheyꢀcanꢀbeꢀfastenedꢀtoꢀaꢀ  
chassisꢀandꢀstackedꢀinꢀlocationsꢀwithꢀlimitedꢀsurfaceꢀ  
area.  
Whenꢀproperlyꢀfastened,ꢀtheꢀmountingꢀbracketsꢀ  
addꢀaꢀheatꢀsinkingꢀbenefitꢀresultingꢀinꢀaꢀsmallerꢀsizeꢀ  
perꢀwatt.ꢀDurableꢀ250ꢀTypeꢀresistorsꢀareꢀfullyꢀweldedꢀ  
andꢀcoatedꢀwithꢀleadꢀfreeꢀvitreousꢀenamel.  
•ꢀSmallꢀsize-to-powerꢀratio.  
•ꢀStackable  
•ꢀIntegralꢀ mountingꢀ bracketꢀ conductsꢀ heattoꢀ  
mountingꢀsurface.  
•ꢀLowꢀprofileꢀforꢀuseꢀinꢀequipmentꢀwhereꢀspaceꢀisꢀ  
limited.  
•ꢀAll-weldedꢀconstruction.  
•ꢀRoHSꢀcompliantꢀproductꢀavailable.ꢀAddꢀ“E”ꢀsuffixꢀtoꢀ  
partꢀnumberꢀtoꢀspecify.  
SꢁꢀꢂꢁS SPꢁcꢂFꢂcatꢂONS  
Series  
Wattage  
10  
Ohms  
1.0-15K  
1.0-50K  
1.0-10K  
1.0-25K  
1.0-30K  
Max. Voltage*  
187  
F10  
F20  
F30  
F40  
F55  
20  
30  
40  
55  
815  
281  
655  
1405  
Adjustable versions and other sizes available; Consult Ohmite Also available  
in low cost Centohm or Silicone coating; Consult Ohmite.  
* Maximum Voltage is based on Ohm’s Law [V=√P*R] as limited by the resis-  
tance value of specified product  
chaꢀactꢁꢀꢂStꢂcS  
Lead free vitreous enamel  
Coating  
Core  
Ceramic  
Tinned lug with hole. RoHS solder composition is 96% Sn, 3.5% Ag, 0.5% Cu  
Linearly from 100% @ +25°C to 0% @ +350°C  
±5% (J)  
Terminals  
Derating  
Tolerance  
Power rating  
Based on mounting a single resistor on a metal surface measuring 10”  
(254mm) square by 0.04” (1.016mm) thick. Reduce rating by 15% when  
mounting on non-metallic surface  
10x rated wattage for 5 seconds if max. voltage is not exceeded  
1 to 20Ω: ±400 ppm/°C  
Over 20Ω: ±260 ppm/°C  
Overload  
Temperature  
coefficient  
500 VAC: 10 and 20 watt rating. 1000 VAC: 30, 40 and 55 watt rating (mea-  
Dielectric with-  
sured from lug to mounting bracket)  
standing voltage  
To calculate, use the formula √P/R  
Max. amps  
1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com  
110  

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