81C1A-E28-A20L Bourns Inc., 81C1A-E28-A20L Datasheet
81C1A-E28-A20L
Manufacturer Part Number
81C1A-E28-A20L
Description
POT 100K OHM CERMET 2W
Manufacturer
Bourns Inc.
Series
81r
Type
Potentiometerr
Datasheet
1.81A1A-B28-A15L.pdf
(6 pages)
Specifications of 81C1A-E28-A20L
Number Of Turns
Single
Termination Style
Through Hole
Temperature Coefficient
±150ppm/°C
Resistance (ohms)
100K
Power (watts)
2W
Tolerance
±10%
Rotation
300°
Adjustment Type
Side Adjustment
Resistive Material
Cermet
Actuator Length
22.23mm
Actuator Type
Slotted Shaft
Actuator Diameter
3.18mm
Package / Case
Square - 0.625" L x 0.625" W x 0.625" H (15.88mm x 15.88mm x 15.88mm
Resistance In Ohms
100K
Resistance
100kohm
Power Rating
2W
Tolerance (+ Or -)
10%
Technology
Cermet
Mounting Style
Panel
Operating Temp Range
-40C to 125C
Failure Rate
Not Required
Shaft Diameter (mm)
3.18mm
Product Diameter (mm)
Not Requiredmm
Product Length (mm)
38.11mm
Product Height (mm)
17.52mm
Product Depth (mm)
15.88mm
Taper
Linear
Element Type
Cermet
Shaft Type
Slotted
Shaft Length
7/8 in
Shaft Diameter
1/8 in
Product
Precision Potentiometers
Track Resistance
100kohm
Track Taper
Linear
No. Of Turns
1
Resistance Tolerance
± 10%
Potentiometer Mounting
Panel
No. Of Gangs
1
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Compliant, Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
81C1A-E28-A20L
Manufacturer:
BOURNS
Quantity:
1 000
Standard Resistance Range
Total Resistance Tolerance .........................................................................±20 % or 10 % ...................................... ±10 % or 5 %
Independent Linearity .................................................................................±5 % ...................................................... ±5 %
Absolute Minimum Resistance ...................................................................2 ohms maximum .................................. 2 ohms maximum
Effective Electrical Angle ............................................................................(Linear tapers) 240 ° ± 5 ° ...................... (Linear tapers) 240 ° ± 6 °
Contact Resistance Variation .....................................................................±1 % ...................................................... ±1 % or 3 ohms (whichever is greater)
Dielectric Withstanding Voltage (MIL-STD-202, Method 301)
Insulation Resistance (500 VDC) ................................................................1,000 megohms minimum ..................... 1,000 megohms minimum
Power Rating At 70 °C (Voltage Limited By Power Dissipation or 350 VAC, Whichever Is Less)
Theoretical Resolution ................................................................................Essentially infi nite .................................. Essentially infi nite
Operating Temperature Range ...................................................................-40 °C to +125 °C .................................. -40 °C to +125 °C
Storage Temperature Range ......................................................................-55 °C to +125 °C .................................. -55 °C to +125 °C
Temperature Coeffi cient Over Storage Temperature Range ......................±1,000 ppm/°C ...................................... ±150 ppm/°C
Vibration (Single Section) ...........................................................................15 G ....................................................... 15 G
Shock (Single Section) ...............................................................................30 G ....................................................... 30 G
Load Life .....................................................................................................1,000 hours ........................................... 1,000 hours
Rotational Life (No Load) ............................................................................100,000 cycles ...................................... 100,000 cycles
Moisture Resistance (MIL-STD-202, Method 103, Condition B)
IP Rating .....................................................................................................IP 40 ...................................................... IP 40
Stop Strength
Mechanical Angle ...................................................................................................................................................................................................... 300 ° ±5 °
Torque
Single Section ................................................................................................................................................................. 0.14 to 1.06 N-cm (0.2 to 1.5 oz.-in.)
Dual Section .................................................................................................................................................................... 0.14 to 1.06 N-cm (0.2 to 1.5 oz.-in.)
Triple Section ................................................................................................................................................................... 0.35 to 1.41 N-cm (0.5 to 2.0 oz.-in.)
Quadruple Section .......................................................................................................................................................... 0.35 to 1.41 N-cm (0.5 to 2.0 oz.-in.)
Weight (Single Section).............................................................................................................................................................................. 21 grams maximum
Terminals .......................................................................................................................................................................... Printed circuit terminals or J-Hooks
Marking .......................................................................... Manufacturer’s trademark, wiring diagram, date code and resistance, manufacturer’s part number
Ganging (multiple section potentiometers) ..................................................................................................................................................... 4 cup maximum
Hardware ...........................................One lockwasher and one mounting nut is shipped with each potentiometer, except where noted in the part number.
For dimensional drawings see pages 3 & 4.
For ordering information see page 5.
NOTE: Model 81/82 performance specifi cations do not apply to units subjected to printed circuit board cleaning procedures.
1 At room ambient: +25 °C nominal and 50 % relative humidity nominal, except as noted.
Initial Electrical Characteristics
Environmental Characteristics
Mechanical Characteristics
Potentiometer Specifi cations
Linear Tapers (A, B, E, & H) ..................................................................(B & E) 1 K ohms to 1 megohm ............. (A & H) 100 ohms to 1 megohm
Audio Tapers (C, D, F, G, S, & T) .........................................................(D, G, S, & T) 1 K ohms to 1 megohm ... (C & F) 1 K ohms to 1 megohm
Sea Level ..............................................................................................1,500 VAC minimum .............................. 1,500 VAC minimum
70,000 Feet ..........................................................................................500 VAC minimum ................................. 500 VAC minimum
+70 °C Single Section Assembly .........................................................(Linear tapers) 0.5 watt .......................... (Linear tapers) 2 watts
+70 °C Multiple Section Assembly.......................................................(Linear tapers) 0.5 watt/section ............. (Linear tapers) 1 watt/section
+125 °C ................................................................................................0 watt ..................................................... 0 watt
Total Resistance Shift ...........................................................................±2 % maximum ..................................... ±2 % maximum
Voltage Ratio Shift ................................................................................±5 % maximum ..................................... ±5 % maximum
Total Resistance Shift ...........................................................................±2 % maximum ..................................... ±2 % maximum
Voltage Ratio Shift ................................................................................±5 % maximum ..................................... ±5 % maximum
Total Resistance Shift ...........................................................................±10 % maximum ................................... ±5 % maximum
Total Resistance Shift ...........................................................................(Linear taper) 10 ohms or ..................... (All tapers) ±5 % TRS maximum
Contact Resistance Variation @ 50,000 cycles
Total Resistance Shift ...........................................................................(B & E tapers) ±10 % maximum ........... ±5 % maximum (all tapers)
Insulation Resistance (500 VDC) ..........................................................100 megohms minimum ........................ 100 megohms minimum
1/4 ” and 1/8 ” diameter shafts ......................................................................................................................................................... 45.19 N-cm (4 lb.-in.)
7/8 ” length shaft ................................................................................................................................................................................. 22.6 N-cm (2 lb.-in.)
Starting and Running Torque (Non-Locking Bushings)
Starting and Running Torque (Locking Bushings) ..................................................................................................... 0.14 to 2.82 N-cm (0.2 to 4.0 oz.-in.)
Shaft Locking Torque with Locknut @ 10 in-lb. (B & E Bushings) ........................................................................................................ 14 N-cm (20 oz-in.)
Mounting ...................................................................................................................................................................1.7-2.0 N-m (15-18 lb.-in.) maximum
(Each Additional Section) ...................................................................................................................................................................... 6 grams maximum
Soldering Condition .................................................................. Recommended hand soldering using Sn95/Ag5 no clean solder, 0.025 ” wire diameter.
(Audio taper) ..................................................................................±3 % ...................................................... ±3 %
(Linear taper) .................................................................................±2 % ...................................................... ±2 %
1
1
Maximum temperature 399 °C (750 °F) for 3 seconds. No wash process to be used with no clean fl ux.
81/82 - 5/8 ” Square Single-Turn Panel Control
85/86 - 5/8 ” Square Single-Turn Panel Control with Rotary Switch
Features
■
■
■
■
Metal shaft and bushing
Consistent, smooth quality feel
Up to 4 sections available
Rotary switch option designed
for “on-off” function control
Conductive Plastic Element
(Audio tapers) 225 ° ± 5 ° ...................... (Audio tapers) 225 ° ± 6 °
(Audio tapers) 0.25 watt ........................ (Audio tapers) 1 watt
(Audio tapers) 0.25 watt/section ........... (Audio tapers) 0.5 watt/section
±10 % TRS max. (whichever is greater)
(Audio taper) ±20 % maximum
(D, G, S & T tapers) ±20 % maximum
Customers should verify actual device performance in their specifi c applications
*RoHS Directive 2002/95/EC Jan 27, 2003 including Annex.
■
RoHS compliant versions available*
Specifi cations are subject to change without notice.
Cermet Element
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81C1A-E28-A20L Summary of contents
Page 1
Potentiometer Specifi cations 1 Initial Electrical Characteristics Standard Resistance Range Linear Tapers ( & H) ..................................................................(B & ohms to 1 megohm ............. (A & H) 100 ohms to 1 megohm Audio Tapers ( ...
Page 2
Square Single-Turn Panel Control 85/86 - 5/8 ” Square Single-Turn Panel Control with Rotary Switch Rotary Switch Specifi cations 1 Initial Electrical Characteristics Contacts: DPST ...............................................................................................................................................................................N.O/N.O.,N.C./N.C. or N.O./N.C. DPDT ................................................................................................................................................................................2 N.O./N.C. (break before make) Power Rating ...
Page 3
Square Single-Turn Panel Control Product Dimensions "A" Bushing 3/8 " (9.53 mm) Dia. Plain - Single Shaft 12.7,15.88,19.05,22.23± .79 (1/2, 5/8, 7/8, ± 1/32) 9.50 ± .38 STANDARD (.375 ±.015) 3/8-32 UNEF 6.35 ± .03 DIA. ...
Page 4
Square Single-Turn Panel Control Product Dimensions Dual Unit - PC Pins & J-Hook 26.04 ± .79 (1.025 ± .031) 10.16 ± .38 (.400 ± .015) Model 81/82 Single Unit - PC Pins & J-Hook 15.88 ± ...
Page 5
Square Single-Turn Panel Control with Rotary Switch Product Dimensions Primary Potentiometer Module Secondary Potentiometer Module Model 85/86 Model 85/86 14.53 (.572) 9.58 ± .38 (.377 ± .015) 12.7 (.50) 5.97 (.235) 5.08 (.200) 8.56 8.56 (.337) ...
Page 6
Square Single-Turn Panel Control 85/86 - 5/8 ” Square Single-Turn Panel Control with Rotary Switch How To Order ANTI-ROTATION LUG A Single .305 R, 90 °CW ...