T-18 18 mm Carbon Potentiometer FEATURES Carbon resistive element. Dust proof enclosure. With or without actuating knob Optional SPST switch MECHANICAL SPECIFICATIONS ELECTRICAL SPECIFICATIONS Range of values* Mechanical rotation angle: 255 5 Electrical rotation angle: 220 20 Torque: 0.5 to 1.5 Ncm. (0.7 to 2.1 in-oz) Stop torque: > 40 Ncm. ( > 56 in-oz) Tolerance*: 20% 30% Max. Voltage: 200 VDC (lin) 100 VDC (no lin) Nominal Power 50C (122F) (see power rating curve) 0.25 W (lin) 0.12 W (no lin) Taper* (Log. & Alog. only Rn > 1K) Lin ; Log; Alog. Residual resistance*: Equivalent Noise Resistance: * Others upon request. Operating temperature**: 25C + 70C (13F + 158F) ** Up to 85C depending on application. HOW TO ORDER STANDARD T-18 A I 1 473 B 2020 Series Terminals Switch Thumbwheel Value Taper Tolerance T-18 A = PCB I = with S = sb/st A = Linear 2020 = +/-20% B = Solder Lugs S = without T = sb/ct B = Log. 3030 = +/-30% 1 = Fig. 1 C = Alog. 2 = Fig. 2 (See note 3) (See note 4) 3 = Fig. 3 Others tapers on request 4 = Fig. 4 (See note 1) (See note 2) NOTES: (1) Thumbwheel: S = without knob, without screw T = without knob, with screw Fig. 1, 2 y 3: countersunk knob Fig. 4: knob with screw knob colour: Black If you wish to use your own custom plastic shaft/knob/actuator please contact Piher for advice about compatible materials. (2) Value: Code: 10 1 Number of zeros 2 first digits of the value. Others values upon request. (3) Tolerance (non standard), upon request. Rotary switch with Alog. curve is not available. 07 Example code: +7 = -5 (4) Switch option not available with antilog taper. NOTE: The information contained here should be used for reference purposes only. www.piher.net 78 05 negative tolerance positive tolerance HOW TO ORDER CUSTOM DRAWING (Max. 16 digits) T-18 A I + DRAWING NUMBER This way of ordering should be used for options which are not included in the "How to order" standard and optional extras. TERMINALS 16 4.5 DETAIL 16 T-18 B 4.5 DETAIL 1 T-18 A DETAIL 2.3 2.3 6.7 15 10.5 4.5 4 0.05 1 20 5 2 R2 0.05 2.3 1 E S 10 1.9 A A = Initial S = Wiper 21 E = Final POWER RATING CURVE SWITCH 20 ELECTRICAL AND MECHANICAL W (%) SWITCH RATING 0.5 A; 12V DC SWITCH OPERATING ANGLE 2510 MECHANICAL LIFE (CYCLES) 10.000 100 % 40 % 4 0.5 10 C 10 70 7.5 O 1.3 0.7 3.5 11.5 16 0.4 1 50 20 O 2.2 1 M 1.7 FOOTPRINT SCREW THUMBWHEEL 1.85 6.4 1.85 96 TEETH Fig. 2 / REF. 5951 2.8 1.85 96 TEETH (Screw Ref. 5342 is required) 3.1 28 23.5 Fig. 4 / Ref. 5953 TYPICAL VARIATIONS TESTS ELECTRICAL LIFE MECHANICAL LIFE : POT. TEMPERATURE COEFFICIENT THERMAL CYCLING DAMP HEAT VIBRATION (for each plane X,Y,Z) 1.000 h. @ 50 o C; 0.25 W 25.000 (10-15 CPM) 25 C; +70 C 16 h. @ 85 C; 2h @ 25 C 500 h. @ 40 C @ 95% HR 2 h. @ 10 Hz - 55 Hz. NOTE: Out of range values may not comply these results. www.piher.net 2.3 16.5 96 TEETH 3 3.05 Fig. 3 / Ref. 5952 23.5 4 18.6 16.5 3.05 3.05 Fig. 1 / Ref. 5950 79 5 % 3 % (Rn < 1 M) 300 ppm (Rn <100 K) 2.5 % 5 % 2 % RECOMMENDED CONNECTIONS VCC E Piher potentiometers recommended connection circuit for a position sensor or control application. (voltage divider circuit electronic design). S R A AD RL C Noise filter. Ground. RL 100 x R Disclaimer The product information in this catalogue is for reference purposes. Please consult for the most up to date and accurate design information. 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If you are in any doubt about the export control restrictions that apply to this information, please contact the sender immediately. For any Piher Exports, Note: All products / technologies are EAR99 Classified commodities. Exports from the United States are in accordance with the Export Administration Regulations. Diversion contrary to US law is prohibited. v080416 All Piher products can be adapted to meet customers requirements. Please always use the latest updated datasheets published at our website www.piher.net. Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Piher: T18BI1103A2020 T18AI3103A2020 T18AS-1-103A2020 T18AS-S-103A2020 T-18AS-3-103A2020