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Features
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25K and 50K ohm resistance options for active electronics Knurled or plain shaft Metal shaft Conductive polymer element Very low noise
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Single-turn 250K and 500K resistance option Audio taper Long rotational life Long bushing option RoHS compliant*
Model 95 Premium Guitar Potentiometer Initial Electrical Characteristics1 Standard Resistance Value......................................................................................................................................................25K, 50K, 250K and 500K ohms Total Resistance Tolerance ................................................................................................................................................................................................20 % Independent Linearity ........................................................................................................................................................................................................±5 % Absolute Minimum Resistance ......................................................................................................................................................................2 ohms maximum Effective Electrical Angle............................................................................................................................................................................................225 ° ± 5 ° Contact Resistance Variation ............................................................................................................................................................................................±1 % Dielectric Withstanding Voltage (MIL-STD-202, Method 301) Sea Level ................................................................................................................................................................................................1,500 VAC minimum 70,000 Feet ................................................................................................................................................................................................500 VAC minimum Insulation Resistance (500 VDC) ......................................................................................................................................................1,000 megohms minimum Power Rating (Voltage Limited By Power Dissipation or 350 VAC, Whichever Is Less) +70 °C ......................................................................................................................................................................................................................0.25 watt +125 °C ..........................................................................................................................................................................................................................0 watt Theoretical Resolution ....................................................................................................................................................................................Essentially infinite
Environmental Characteristics1 Operating Temperature Range ......................................................................................................................................................................-40 °C to +125 °C Storage Temperature Range ..........................................................................................................................................................................-55 °C to +125 °C Temperature Coefficient Over Storage Temperature Range ..............................................................................................................................±1,000 ppm/°C Vibration ..............................................................................................................................................................................................................................15 G Total Resistance Shift ....................................................................................................................................................................................±2 % maximum Voltage Ratio Shift ..........................................................................................................................................................................................±5 % maximum Shock ..................................................................................................................................................................................................................................30 G Total Resistance Shift ....................................................................................................................................................................................±2 % maximum Voltage Ratio Shift ..........................................................................................................................................................................................±5 % maximum Load Life ..................................................................................................................................................................................................................1,000 hours Total Resistance Shift ..................................................................................................................................................................................±10 % maximum Rotational Life (No Load) ....................................................................................................................................................................................100,000 cycles Total Resistance Shift .................................................................................................................................................................................. ±20 % maximum Contact Resistance Variation @ 50,000 cycles .............................................................................................................................................................. ±3 % Moisture Resistance (MIL-STD-303, Method 103, Condition B) Total Resistance Shift ..........................................................................................................................................................................±20 % TRS maximum Insulation Resistance (500 VDC) ......................................................................................................................................................100 megohms minimum IP Rating ............................................................................................................................................................................................................................IP 40
Mechanical Characteristics1 Mechanical Angle ........................................................................................................................................................................................................300 ° ±5 ° Rotational Torque ..............................................................................................................................................................................0.7 oz-in (50 g-cm) typical Weight Standard Bushing................................................................................................................................................................................................14.25 grams Long Bushing ......................................................................................................................................................................................................18.15 grams Terminals....................................................................................................................................................................................................................Solder lugs Soldering Condition ......................................................................Recommended hand soldering using Sn95/Ag5 no clean solder, 0.025 ” wire diameter. Maximum temperature 399 °C (750 °F) for 3 seconds. No wash process to be used with no clean flux. Marking............................................................................................................Manufacturer’s trademark, date code, resistance, manufacturer’s part number Hardware ......One lockwasher, one mounting nut, and one solder lug washer is shipped with each potentiometer, except where noted in the part number. 1
AT ROOM AMBIENT: +25 °C NOMINAL AND 50 % RELATIVE HUMIDITY NOMINAL, EXCEPT AS NOTED.
Selection Guide
Audio Taper Plot 100
Part Number
PERCENT VOLTAGE RATIO OUTPUT
90
Taper/Shaft
95A1D-Z28-EA0/300L Audio/Knurled 95A1D-Z28-EA0/301L Audio/Plain 95A1D-Z28-EA0/302L Audio/Knurled 95A1D-Z28-EA0/303L Audio/Plain Audio/Knurled 95Z1D-Z33-EA0/304L (Long Bushing Version) Audio/Knurled 95Z1D-Z33-EA0/305L (Long Bushing Version)
80 70 60 50 40 30
Resistance Value (Ω)
250K 250K 500K 500K 250K
Part Number
Taper/Shaft
95A1D-Z28-EA0/317L Audio/Knurled 95A1D-Z28-EA0/318L Audio/Knurled 95Z1D-Z33-EA0/319L Audio/Knurled (Long Bushing Version) 95Z1D-Z33-EA0/320L Audio/Knurled (Long Bushing Version)
Resistance Value (Ω)
25K 50K 25K
50K
500K
Schematic
20
1 CCW
10 0 0
10
20
30
40
50
60
70
80
90
100
PERCENT EFFECTIVE ELECTRICAL CLOCKWISE ROTATION
3
2 POTENTIOMETER *RoHS Directive 2002/95/EC Jan 27 2003 including Annex Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications.
Model 95 Premium Guitar Potentiometer Product Dimensions 11.18 ± 0.25 (.440 ± .010) 8.31 ± 0.25 (.327 ± .010)
Knurled Shaft 5.97 ± 0.05 (.235 ± .002)
5.56 ± 0.25 (.219 ± .010) 1.17 ± 0.25 (.046 ± .010) 1.57 ± 0.25 (.062 ± .010) 5.03 ± 0.05 DIA. (.198 ± .002)
MOUNTING SURFACE 12.7 ± 0.23 (.500 ± .009)
3 2 1
21 °
0.41 (.016)
5.08 ± 1.02 (.200 ± .040)
2.54 (.100)
2.54 (.100)
Knurled Shaft (Long Bushing Version)
4.45 ± 0.38 (.175 ± .015)
MOUNTING SURFACE 12.7 ± 0.23 (.500 ± .009)
8.74 ± 0.25 (.344 ± .010)
8.74 ± 0.25 (.344 ± .010) 5.08 ± 1.02 (.200 ± .040) 2.54 (.100)
1.02 WIDE X (.040) 2.29 LONG (.090) 3 PLCS.
0.76 ± 0.25 (.030 ± .010) 1.57 ± 0.25 (.062 ± .010) 5.03 ± 0.05 DIA. (.198 ± .002)
15.88 ± 0.38 (.625 ± .015) DIA. 13.72 (0.54) 15.88 ± 0.38 (.625 ± .015)
9.53 ± 0.38 (.375 ± .015)
26.82 ± 0.79 (1.056 ± .031)
1.02 WIDE X (.040) 2.29 LONG (.090) 3 PLCS.
2.03 (.080) 3 PLCS.
4.45 ± 0.38 (.175 ± .015) MOUNTING SURFACE
Plain Shaft
15.88 ± 0.38 (.625 ± .015)
12.7 ± 0.23 (.500 ± .009)
3/8-32 UNF-2A
0.25 X 45 ° ±5 ° (.010)
6.31 DIA. (.2483)
3 2 1
2.54 (.100)
15.88 ± 0.38 (.625 ± .015)
9.53 ± 0.38 (.375 ± .015)
2.03 (.080) 3 PLCS.
DIA. 5.97 KNURL (.235) 0.25 X 45 ° ±5 ° (.010)
3 2 1
2.54 (.100)
DIA. 13.72 (0.54)
22.23 ± 0.79 (.875 ± .031)
5.87 ± 0.25 (.231 ± .010)
MM (INCHES)
15.88 ± 0.38 (.625 ± .015)
5.59 ± 0.20 (.220 ± .008)
19.05 ± 0.38 (.750 ± .015)
0.41 (.016)
DIA. 5.97 KNURL (.235) 0.50 X 45 ° ±5 ° (.020)
DIMENSIONS ARE:
5.08 ± 1.02 (.200 ± .040) 2.54 (.100)
0.41 (.016) 4.45 ± 0.38 (.175 ± .015)
DIA. 13.72 (0.54)
9.53 ± 0.38 (.375 ± .015)
2.03 (.080) 3 PLCS.
5.59 ± 0.20 (.220 ± .008) 22.23 ± 0.79 (.875 ± .031)
15.88 ± 0.38 (.625 ± .015)
1.02 WIDE X (.040) 2.29 LONG (.090) 3 PLCS.
Asia-Pacific: TEL +886- (0)2 25624117 • FAX +886- (0)2 25624116 Europe: TEL +41-41 7685555 • FAX +41-41 7685510 The Americas: TEL +1-951 781-5500 • FAX +1-951 781-5700
www.bourns.com
REV. 05/08 Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications.
PANEL CONTROLS
Bourns® Model 95 Premium Guitar Potentiometer
New Low Resistance Values for Use with Active Electronics Riverside, California - June 4, 2008 - In further support of our focus on the Professional Audio Market, Bourns® Sensors and Controls Product Group is pleased to announce the release of two new low resistance options for our Model 95 Premium Guitar Potentiometer. These low resistance options are specifically suited for use with electric guitars utilizing active electronics. The typical resistance values used for active electronics are 25K and 50K ohms. Part Number Taper / Shaft Resistance Value (Ω) 95A1D-Z28-EA0/317L .............................. Audio / Knurled ..................................... 25K 95A1D-Z28-EA0/318L .............................. Audio / Knurled .................................... 50K 95Z1D-Z33-EA0/319L .............................. Audio / Knurled ..................................... 25K (Long Bushing Version) 95Z1D-Z33-EA0/320L .............................. Audio / Knurled ..................................... 50K (Long Bushing Version) Samples are available now. For your convenience, the data sheet is available on the Bourns Pro Audio website at http://www.bourns.com/proaudio. Production quantities are now available. Please feel free to contact any of our Field Application Engineers or Bourns Sales Representatives with any technical questions you may have regarding these new products.
Model 95 Features ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■
25K and 50K ohm resistance options for active electronics Knurled or plain shaft Metal shaft Conductive polymer element Very low noise Single-turn 250K and 500K resistance option Audio taper Long rotational life Long bushing option RoHS compliant*
*RoHS Directive 2002/95/EC Jan 27 2003 including Annex
Model 95 Applications ■ ■
Electric guitars Bass guitars
SC0835
