3851A-203-502DL Просмотр технического описания (PDF) - Bourns, Inc

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производитель

3851A-203-502DL

3/4˝ Diameter Panel Control

Bourns, Inc 

Features

■ Single-turn (3851 and 3852)

■ 3-3/4-turn (3856)

■ Linear and audio tapers

■ Wide resistance range

■ Minimal depth package

■ Good resolution

3851/3852/3856 - 3/4 ˝ Diameter Panel Control

Initial Electrical Characteristics1

Standard Resistance Range

3851

Conductive Plastic Element

3852/3856

Cermet Element

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 Characteristics1

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 At room ambient: +25 °C nominal and 50 % relative humidity nominal, except as noted.

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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