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3851E-287-254EL

产品描述Potentiometer, Conductive Plastic, 1W, 250000ohm, 10% +/-Tol, -1000,1000ppm/Cel,
产品类别无源元件    电阻器   
文件大小626KB,共6页
制造商Bourns
官网地址http://www.bourns.com
标准
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3851E-287-254EL概述

Potentiometer, Conductive Plastic, 1W, 250000ohm, 10% +/-Tol, -1000,1000ppm/Cel,

3851E-287-254EL规格参数

参数名称属性值
是否Rohs认证符合
Objectid770286846
包装说明Panel Mount,
Reach Compliance Codenot_compliant
YTEOL7.5
执行器方向HORIZONTAL
执行器类型SHAFT
构造Single Turn
帮派号码1
安装特点THROUGH HOLE MOUNT
端子数量3
转弯数量1
最高工作温度125 °C
最低工作温度-1 °C
封装直径19.05 mm
封装长度6.35 mm
封装形状CYLINDRICAL PACKAGE
封装形式Panel Mount
额定功率耗散 (P)1 W
额定温度70 °C
电阻250000 Ω
电阻定律LINEAR
电阻器类型POTENTIOMETER
旋转角250 deg
表面贴装NO
技术CONDUCTIVE PLASTIC
温度系数1000 ppm/°C
端子形状FLAT
容差10%

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Features
n
Single-turn (3851 and 3852)
n
3-3/4-turn (3856)
n
Linear and audio tapers
n
Wide resistance range
n
Minimal depth package
n
Good resolution
3851/3852/3856 – 3/4 ˝ Diameter Panel Control
Initial Electrical Characteristics
1
Standard Resistance Range
Linear Tapers (A, B, E, and H) ....................1 K to 1 megohm ..............................................100 ohms to 1 megohm
Audio Tapers (C, D, F, and G) .....................1 K to 1 megohm ..............................................1 K ohms to 1 megohm
Total Resistance Tolerance...............................±10 % or ±20 % ................................................±5 % or ±10 %
Independent Linearity .......................................±10 % ...............................................................(A & H tapers) ±5 %
Absolute Minimum Resistance .........................2 ohms maximum ............................................. 2 ohms maximum
Effective Electrical Angle ..................................(Linear tapers) 250 ° ±5 ° .................................(Linear tapers) 250 ° ±5 °
(Audio tapers) 225 ° ±5 ° ..................................(Audio tapers) 225 ° ±5 °
Contact Resistance Variation ...........................±1 % .................................................................±3 % of total resistance or 3 ohms
(whichever is greater)
Dielectric Withstanding Voltage (MIL-STD-202, Method 301)
Sea Level ....................................................900 VAC minimum ............................................900 VAC minimum
70,000 Feet .................................................350 VAC minimum ............................................350 VAC minimum
Insulation Resistance (500 VDC) .....................1,000 megohms minimum ................................1,000 megohms minimum
Power Rating (Voltage Limited By Power Dissipation or 350 VAC, Whichever Is Less)
+70 °C ........................................................(Linear tapers) 1 watt .......................................(Linear tapers) 2 watts
(Audio tapers) 0.5 watt .....................................(Audio tapers) 1 watt
+125 °C .......................................................0 watt
+150 °C .................................................................................................................................0 watt
Theoretical Resolution ......................................Essentially infinite .............................................Essentially infinite
Environmental Characteristics
1
Operating Temperature Range .......................... -1 °C to +125 °C ................................................. -1 °C to +125 °C
Storage Temperature Range ............................. -65 °C to +125 °C ............................................... -65 °C to +150 °C
Temperature Coefficient Over
Storage Temperature Range ........................... ±1,000 ppm/°C ................................................... ±150 ppm/°C
Vibration ............................................................. 20 G .................................................................... 20 G
Total Resistance Shift ................................... ±2 % maximum .................................................. ±2 % maximum
Voltage Ratio Shift ........................................ ±5 % maximum .................................................. ±6 % maximum
Shock ................................................................. 100 G.................................................................. 100 G
Total Resistance Shift ................................... ±2 % maximum .................................................. ±2 % maximum
Voltage Ratio Shift ........................................ ±5 % maximum .................................................. ±6 % maximum
Load Life............................................................. 1,000 hours ........................................................ 1,000 hours
Total Resistance Shift ................................... ±10 % maximum ................................................ ±3 % maximum
Rotational Life (No Load) ................................... 100,000 cycles ................................................... 20,000 cycles
Total Resistance Shift ................................... ±15 % TRS maximum ....................................... ±5 % or 5 ohms TRS whichever is greater
Contact Resistance Variation ....................... ±3 % ................................................................... ±3 %
Moisture Resistance (MIL-STD-202, Method 103, Condition B)
Total Resistance Shift ................................... ±10 % maximum ............................................... ±2 % maximum
IP Rating............................................................. IP 40 ................................................................... IP 40
1
Electrical
3851
Conductive Plastic Element
3852/3856
Cermet Element
specifications tested at 250 RPM, at room ambient: +25 °C nominal.
WARNING
Cancer and Reproductive Harm
www.P65Warnings.ca.gov
*RoHS Directive 2015/863, Mar 31, 2015 and Annex.
Specifications are subject to change without notice. Users should verify actual device performance in their specific
applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the
last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
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