Rotary Potentiometers ■ Checklist Before Inquiry When you specify Potentiomters, please take advantages of our standard products for better price and delivery. Please provide the following items before ordering. Checklist C-1 C-2 Common C-3 C-4 C-5 C-6 E-1 Electrical E-2 E-3 E-4 E-5 E-6 E-7 M-1 Others Shapes/Dimensions M-2 Item Inquiry purpose Previous supplier Modification Conventional part No. Purpose Equipment Environment Application Temperature Operation Method Adjustment Direction Driver shape Method Mounting Mounter Method Soldering Conditions Washing Circuit Application Stereo tone use Current Conditions Rating Applied current Total value/Torelance Resistance Taper Range Tracking error Specifications Tap Necessity/Position Other requirements Size Shape Units Structure ✽ Shape Shaft/Lever Shape Type M-3 Mounting M-4 Terminals (Type with bushing) Information (Requirements) New use, Modification, Others ( ) Indoor/Outdoor use, Stationary/Portable set, High humidity, SO2, NaCl ( °C) to ( °C) General use, Edge drive, Low torque Manual, Automatic Top, Bottom, Vertical, Horizontal Plus/Minus screw slot, Hexagonal driver, Knob (Shape; ) Manual, Automatic Panasert (Model: ), Other mounter (Maker/Model: / ), Parts feeder Manual soldering, Flow soldering, Reflow soldering Temp. ( °C), Time ( s), Dipping times( ) Machine, Soaking, Applied solvent ( ) Volume, Tone, Balance, Circuit regulation, Others ( ) General tone, High-cut tone, Bass, Treble ac, dc Max. operating power ( W), Operating voltage ( V) Small current use, Applying current ( mA) ( %) 액) / ±20 %, ±30 %, Others (± A, B, C, D, G, BH, 15A, 1B, 15C, 10A, 4B, H, Others ( ) ( dB) to ( dB) ±( dB) Necessary, Unnecessary / 40 %, 50 %, 60 %, Others ( ) φ14, φ16, φ18 Single, 1-shaft 2 gang, 1-shaft 3 gang, 1-shaft 4 gang, 2-shaft 2 gang, 2-shaft 3 gang, 2-shaft 4 gang, 2-shaft 5 gang, Others ( Side Adjustment type, Top Adjustment type F type (flat), S type (slotted), P type (18 teeth serrations) Bushing, Soldering, Screw mounting, Others ( ) ) Screw dia.: M6, M7, M9, M10, 3/8앨 Screw pitch: 0.75 mm, 1.0 mm, 32NEF Bushing length: 5 mm, 7 mm, 10 mm, 15 mm, 17.5 mm, 20 mm, 22.5 mm, 25 mm, 27.5 mm, 30 mm, 32.5 mm, 35 mm, 37 mm, 39 mm, 42.5 mm Type (PWB terminals) Solder lug, PWB Length from mounting surface: ( mm), Layout pattern: ( Type Function Rating Terminal type Detents Position Rotary, Pull-Push, Push-ON, Others ( ) SPST, SPDT, DPST, DPDT Voltage: ( V), Current: ( A), Inrush current: ( Solder lug, PWB (Height from PWB to shaft center: mm) 1 point, 11 points, 41 points, Others ( points) Midpoint, at 180 ° , at 200 ° , Others (at ) ) Additional functions M-5 Switch M-6 Detents L-1 Special requirements for endurance L-2 Other questionnaires A) Notes: 1. When you specify custom types (custom-made), new tooling and jigs, and/or equipment may be required. It will be necessary to confirm your estimates of quantity and development schedule as accurately as possible. 2. Please inform us if you designate your own part number. ✽ Previous notations for potentiometer shape “Stand-up type” (Shaft is parallel to PWB.) and “Lay-down type” (Shaft is vertical to PWB.) – have been changed in this edition to “Horizontal type” or “Side-adjust type” (Shaft or knob is parallel to PWB.) and “Vertical type” or “Top-adjust type” (Shaft or knob is ver tical to PWB.). Design and specifications are each subject to change without notice. Ask factory for the current technical specifications before purchase and/or use. Should a safety concern arise regarding this product, please be sure to contact us immediately. – EV6 – 00 Sep. 2010 Rotary Potentiometers ■ Application Notes When using our Rotary Potentiometers, please observe the following items to prevent dangerous accidents and deterioration of performance. 1. Prohibited items and notes in design stage 1. Use within the rating The Power Rating or Maximum Voltage varies with the size and type of a product. Also, the Power Rat ing must be reduced according to a Power Derating Curve. When a potentiometer is used with a current of less than a few micro-amperes, the influence of contact resistance increases because of the circuit diagram. Check the potentiometer under actual operating conditions. 2. Migration Some potentiometers cannot be used with dc voltage. If a potentiometer is to be used with dc voltage, specify this when ordering, or check the availability referring to the “Product Specifications for Information.” 3. Anodization W hen a potentio meter is 1 3 used with dc voltage under conditions of high humidity, – the ter mi nal at the side of 2 the wiper (terminal 2) must be a positive electrode, as shown + in the figure at right. 4. Recommended Circuit Configuration It is recommended that you use the variable resistor for voltage adjustments. If it is used for current adjustments, then it may be infl uenced by the contact resistance between the resistor body and the slide, depending on the target circuit conditions. Conducting a test under actual operating conditions is highly recommended. 5. Soldering conditions When performing solder dipping, check the soldering conditions according to the “Product Specifications for Information,” because the conditions vary with the product. Do not wash a potentiometer after solder dipping because flux may invade the potentiometer, resulting in contact failure. Avoid use of jumper cables near the potentiometers because flux may attach to them. 6. Shaft rotation wobble If the shaft is long, the rotation wobble increases in proportion to its length. To secure the quality of a set, we recommend use of the types with a bushing. 7. Operating temperature conditions Tactile feeling in operation is given serious consideration, and rotation torque increases under low temperatures (below –10 °C) depending on the product. If a potentiometer is expected to be used under low temperatures, specify this in advance. 3. Chemical resistance Before using a potentiometer with an insulated shaft, be sure to check the reactivity of the shaft with any chemicals to be used. 4. Potentiometers with a push lock type switch Handle the potentiometer with the shaft locked. If a lateral pressure above 0.4 N·m (4 kg·cm) is applied to the shaft when it is unlocked, the shaft may be bent. 5. Storage conditions D o not store the potentio meters under high temperatures and/or high humidity, or in a location where corrosive gas may be generated. Store the po ten ti om e ters at room temperature and room hu midity in a packed condition. Use them within a ma x i mum of 6 months. Check the date of man u facture on the pack age box and apply the “first-in-first-out” rule. If un packed potentiometers must be stored as inventory, store them in a polyethylene bag to keep out air. 3. Prohibited items on fire and smoking 1. Absolutely avoid use of a potentiometer beyond its rated range because doing so may cause a fire. If misuse or abnormal use may result under conditions in which the potentiometer is used out of its rated range, take proper measures such as current interruption using a protective circuit. 2. The grade of nonfl ammability for resin used in potentiometers is “94HB,” which is based on UL94 Standards (fl ammability test for plastic materials). Prohibit use in a location where a spreading fire may be generated or prepare against a spreading fire. 4. For use in equipment for which safety is requested Although care is taken to ensure potentiometer quality, inferior characteristics, short circuits, and open circuits are some problems that might be generated. To design a set which places maximum emphasis on safety, re view the affect of any sin gle fault of a potentiometer in advance and per form vir tu al ly fail - safe design to en sure maximum safety by: 1. preparing a protective circuit or a protective device to improve system safety, and 2. preparing a redundant circuit to improve system safety so that the single fault of a potentiometer does not cause a dangerous situation. For notes on use, the following sources were referred: Technical report EIAJ RCR-2191A “Guideline of Notabilia for potentiometers for Use in Electronic Equipment” issued by the Japan Electronics and Information Technology Industries Association (Issued by March 2002) 2. Prohibited items and notes on handling 1. Terminal clinch Bending and unbending of terminals after mounting to a PWB must be one cycle or less. More than one bending/unbending cycle may result in damage. 2. Stress on the terminals Do not apply excessive stress to terminals during handling. Set soldering conditions with consideration given to stress on the terminals. Refer to this Technical Report for additional details. 5. For actual use, be sure to refer to “Product Specifications for Information.” Design and specifications are each subject to change without notice. Ask factory for the current technical specifications before purchase and/or use. Should a safety concern arise regarding this product, please be sure to contact us immediately. – EV7 – 00 Sep. 2010 Rotary Potentiometers ■ Common Specifications ● Electrical Specifications 1. Taper Measuring Method Out-put Voltage between Terminal 1 & 2 ҂100(%) Operating Voltage between Terminal 1 & 3 Taper Out-put Voltage between Terminal 2 & 3 ҂100(%) Operating Voltage between Terminal 1 & 3 Effective Rotation Angle ✽ EIAJ Panasonic 50 % 50 % 15A A 10 to 25 — 1B B 40 to 60 — 15C C — 10 to 25 10A D 6 to 15 — 4B G 40 to 60 — H BH Linear taper Notes: 1. ✽ Angle from terminal 3 side. 2. ( ) is per JIS (Japanese Industrial Standard). Unless otherwise specified, we consider it at 50 % rotation, however, upon request above JIS can be applied. 3. [ ] is only reference value. Design and specifications are each subject to change without notice. Ask factory for the current technical specifications before purchase and/or use. Should a safety concern arise regarding this product, please be sure to contact us immediately. – EV8 – 00 Sep. 2010 Rotary Potentiometers Standard Taper 50 % Tap B (1BM), For volume control B (3BM), G (4BM) 100 A (15A), D (10A) Output Voltage from Terminal 1-2 ҂100 (%) Applied Voltage at Terminal 1-3 Output Voltage from Terminal 1-2 ҂100 (%) Applied Voltage at Terminal 1-3 100 80 60 40 A (15A) 20 D (10A) 0 20 40 60 80 80 60 40 G (4BM) B (1BM) 20 For volume control B (3BM) 0 100 20 40 B (1B), G (4B), For volume control B (3B) 100 20 0 100 Output Voltage from Terminal 2-3 ҂100 (%) Applied Voltage at Terminal 1-3 Output Voltage from Terminal 1-2 ҂100 (%) Applied Voltage at Terminal 1-3 80 C (15C) 100 80 60 40 B (1B) G (4B) 20 For volume control B (3B) 0 60 20 40 60 80 80 60 40 20 C (15C) 0 100 100 80 60 40 BH (1H, 2H) Output Voltage from Terminal 1-2 ҂100 (%) Applied Voltage at Terminal 1-3 100 80 60 BH-1 (1H) 40 BH-2 (2H) 20 0 Terminal 1 20 40 60 Sliding Position (%) 80 100 Terminal 3 Design and specifications are each subject to change without notice. Ask factory for the current technical specifications before purchase and/or use. Should a safety concern arise regarding this product, please be sure to contact us immediately. – EV9 – 00 Sep. 2010 Rotary Potentiometers 2. Tracking The tracking should be calculated as follows. Tracking (dB)=20 log (VR2/VR1) Where: VR1= Voltage between terminal 1 & 2 of section R1 VR2= Voltage between terminal 1 & 2 of section R2 Test voltage between terminal 1 & 3 shall be 2 V to 5 V (1000±200 Hz). VR2 VR1 In case of a potentiometer with a tap, the mea sure ment should be made by con nect ing a fi xed resistor between tap terminal and terminal 1. Unless otherwise specified, tolerance of the fixed resistor shall be ±10 %. If your requirements different, inform us of your specifications. ● Mechanical Specifications 1. Shaft Angle Shaft angle against mounting surface shall be 90 °. Shaft bend and shaft wobble shall be a҂L/30 (mm) max. when 50 mN·m moment applied to the measuring point of shaft. Where: a= Constant Value as shown below L= Distance between mounting surface and measuring point on the shaft Size Shaft material Shaft wobble (a) Shape & Type Without switch 0.3 mm Metal shaft 14 mm square 18 mm square (Common) Bending moment 1-shaft type With push switch 0.5 mm 50 mN·m Insulated shaft With bushing Single 0.5 mm Snap-in 0.7 mm 2. Nut Tightening Torque When nut is tightened as specified below, unevenness of shaft rotation shall not occur. 1.0 mm min. +0.4 φ D +0.1 Recommended chassis piercing plan Bushing Dia., etc. Tightening Strength M7 to M9 1.0 N·m Mounted State Design and specifications are each subject to change without notice. Ask factory for the current technical specifications before purchase and/or use. Should a safety concern arise regarding this product, please be sure to contact us immediately. – EV10 – 00 Sep. 2010