Spindle Operated Potentiometers Type 31 Series Type 31 Series Characteristics Electrical Resistance Range (Law): 1K Ohm to 1M Ohm Linear 4K7 to 470K (Non Linear) Resistance Values: 1, 2.2 and 4.7 per decade Resistance Tolerance: 20% ( 10% by selection) Rated Dissipation at 40C: 0.25W (Linear), 0.125W (Non Linear) Limiting Element Voltage: 350Vdc or ac RMS Electrical Rotation: 267 NOM without switch, 240 NOM with switch Terminal Resistance: 5 Ohms, Max. Tyco will customize these neat 16mm Noise (ENR): 2% Max. (Linear), 3% Max. (Non Linear) diameter control potentiometers to suit Insulation Resistance: 4 G Ohms Min. your requirements. They comprise a Voltage Proof: 500 Vac peak printed carbon resistance element with 0.25 W current handling and are avaliable with various bush, termination and spindle styles. Characteristics Mechanical As an additional feature, the range Operating Torque: 15 mNm, Max. includes a twist tab design with mount- Mechanical Rotation: 270 Nominal ing bracket applications for use where End Stop Torque: 350 mNm, Max. low price is an important consideration. Key Features Versatile Design can be Customised to Suit Your Requirements SPST Switch Style Low Cost Twist Tab Model PC Mounting Bracket Insulated Shafts Up To 50mm Non Linear Laws Available with Choice of Bush Styles Eyelet or PC Terminations Characteristics Environmental Limits of Resistance Change: 15% (After 1000 hours endurance) Temperature characteristics of resistance ( 20C to 70C ): 5% Bump Severity: 390m/s2, 4000 Bumps Vibration Severity: 10 - 500 Hz, 0.75mm or 98m/s2 Climatic Category: 8 days @ 36C 82% RH DR < 15% Mechanical Endurance: 15000 Operations ( Min ) DIY Design The 31 Series can be customised to suit your individual requirements with features such as detent action, track centre tap etc. Please call our technical sales team to discuss variations on these 16mm diameter devices. Resistance Laws 100 90 A - Linear B - Log C - Inverse Log Percent Voltage Rated Output 80 70 C 60 A 50 B 40 30 20 10 0 0 10 20 30 40 50 60 70 80 90 100 % Effective Electrical Clockwise Rotation Literature No. 1773116 Issued: 2-09 Dimensions are shown for reference purposes only. Dimensions are in millimetres unless otherwise specified. Specifications subject to change. tycoelectronics.com passives.tycoelectronics.com Spindle Operated Potentiometers Type 31 Series Dimensions Type 31 Type 32 Type 34 (Non Switched only) Type 35 (Non Switched only) Type 36 Multi Ganged Types Switched Types Literature No. 1773116 Issued: 2-09 Dimensions are shown for reference purposes only. Dimensions are in millimetres unless otherwise specified. Specifications subject to change. tycoelectronics.com passives.tycoelectronics.com Spindle Operated Potentiometers Type 31 Series How to Order 31 E Potentiometer Type X A Customer Identity 31 - Std Spindle Style S- Standard 32 - No Bush Mtg Bracket 33 - Spindle with Integ Knurled Knob 4mm State Colour X - Customer Special See Drawing (provide copy with order) 104 M W B 25 B Resistance Value Bush Details Shaft Length The first two digits are signifigant figures of resistance value and the third denotes the number of zeros following. N - Black plastic 8mm A/F - M10 with 4mm hole FMF in mm P -Diecast M7 x 6mm 4mm hole Standard Lengths are 15, 20, 25 and 50mm e.g. 4.7K Ohms: 472 22K Ohms: 223 100K Ohms: 104 34 - Rev Mount with mounting pin and PC terminals swept down to board S - Diecast M10 x 8mm 6.35mm hole T - Diecast M7 x 9mm 4mm hole U - No Bush V - Diecast M10 x 8mm 6mm hole 35 - Rev Mount with PC Terminals swept down to board. No terminal on case W - Black plastic M10 8mm M10 6mm hole 36 - Forward mount with PC pins swept forward to parallel to shaft 37 - Dual gang style single shaft same value / tol on each section 38 - Single Spindle Pot with centre detent Termination Style E - Std Eyelet P - Std PC 12.5mm MH R - Long PC 15mm MH X - Extra long for rear PC Mtg Resistor Law Resistance Tolerance A - Linear K - 10% B - Log M - 20% C - Inv. Log S - PC bend forward at 90 Shaft Style Switch Details A - Plain 6mm B - Slotted 6mm A - DPST - Demko approved 4A/250V AC C - Flatted 6mm (5mm A/F) B - SPST - Eyelet Termination D - Flatted 6mm deep flat 4mm A/F C - DPDT - Changeover Switch E - Plain 4mm T - SPST - PC Push Switch F - Full 6.35mm flat special angle G - Flatted 4mm H - Plain 6.35mm J - Flatted 6.35mm (4.6mm A/F) Literature No. 1773116 Issued: 2-09 Dimensions are shown for reference purposes only. Dimensions are in millimetres unless otherwise specified. Specifications subject to change. tycoelectronics.com passives.tycoelectronics.com