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3851A-285-253BL

Description
Potentiometer, Conductive Plastic, 1W, 25000ohm, 20% +/-Tol, -1000,1000ppm/Cel,
CategoryPassive components    The resistor   
File Size626KB,6 Pages
ManufacturerBourns
Websitehttp://www.bourns.com
Environmental Compliance
Download Datasheet Parametric View All

3851A-285-253BL Overview

Potentiometer, Conductive Plastic, 1W, 25000ohm, 20% +/-Tol, -1000,1000ppm/Cel,

3851A-285-253BL Parametric

Parameter NameAttribute value
Is it Rohs certified?conform to
Objectid770285080
package instructionPanel Mount,
Reach Compliance Codenot_compliant
Actuator directionHORIZONTAL
Actuator typeSHAFT
structureSingle Turn
gang number1
Installation featuresTHROUGH HOLE MOUNT
Number of terminals3
number of turns1
Maximum operating temperature125 °C
Minimum operating temperature-1 °C
Package diameter19.05 mm
Package length6.35 mm
Package shapeCYLINDRICAL PACKAGE
Package formPanel Mount
Rated power dissipation(P)1 W
Rated temperature70 °C
resistance25000 Ω
resistance lawLINEAR
Resistor typePOTENTIOMETER
rotation angle250 deg
surface mountNO
technologyCONDUCTIVE PLASTIC
Temperature Coefficient1000 ppm/°C
Terminal shapeFLAT
Tolerance20%
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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