308NPC25KS

Series 308 Potentiometer 1/2 in. sq. 0.5 Watt Description Series 309 Potentiometer The Series 308 and 309 are high-performance, low-cost potentiometers. They are also available with S.P.S.T. or S.P.D.T. rotary switch modules, S.P.S.T. momentary switch modules and/or potentiometer modules in multiple sections up to three sections. 1/2 in. sq. 1.0 Watt Features • Compact - 1/2 in. (12.7mm) miniature, modular size. • Cost-effective - Design simplicity through fewer component parts. • Robust - Horizontal or vertical mountings with support plates. Nickel-plated brass shaft and bushings in various diameters and lengths. Insert molded gold plated terminals for strength. 308: Modular Style, Conductive Plastic 309: Modular Style, Thick-Film Cermet • Precision Made - screen-printed conductive plastic and thick-film cermet elements. • Stability - Series 308 -40ºC to +120ºC; Series 309 -40ºC to 150ºC operating temperature. Series 308 Electrical Specifications Series 309 Electrical Specifications Resistance 100Ω to 5 Megohms, linear; 500Ω to 2 Megohms, non-linear Linear: 5Ω to 5 Megohms Taper: 100Ω to 2 Megohms Resistance Range Linear: thru 500KΩ, ±10%; above 500K to 5 Megohms, ±20%. Non-linear thru 100KΩ, ±10%; above 100KΩ ±20% ± 10% standard; ±5% special. Trimmers ±20%. End Resistance Linear: 4Ω maximum each end. Taper low side 4Ω maximum; high side 1% of total R. 2Ω maximum, 5Ω to 2500Ω; 4Ω maximum, 5KΩ and above. Power Rating .5 watt @ 70ºC. Derated linearly to zero watts at 120ºC. See Figure 2, page 3 For non-linear tapered units or PC mounting, derate by 50%. Trimmer style, derate by 50%. 1 watt @ 85ºC. Derate linearly to zero watts at 150ºC. For tapered units, trimmers or PC mounting, derate 50%. Effective Rotation 265º ±5º without rotary switch; 240º ±5º with rotary switch. 250º +10º -5º without rotary switch; 225º +10º -5º with rotary switch. Dynamic Noise Standard: Linear single controls maximum initial noise level of 1.5% of total resistance. Measurement made using constant current source and oscilloscope detection technique. Special: 1% Standard: Linear single controls maximum initial noise level of 3% of total resistance. Measurement made using constant current source and oscilloscope detection technique. Special: 1.5% Electrical Specifications continued, next page © State Electronics • 36 Route 10, E. Hanover, NJ 07936 973-887-2550 • Toll Free 1-800-688-9711 • Fax 973-887-1940 Internet http://www.potentiometers.com Page 1 Electrical Specifications continued, next page Electrical Rotation 295º ±5º 295º ±5º Working Voltage 350 Vdc across end terminals, but power not to exceed rating. 350 Vdc across end terminals, but power not to exceed rating. Resistance Temperature Characteristics See Chart C. See Chart C. Linearity ±5% independent ±5% independent Non-linear Tapers Right or left-hand available. See Chart A. Right or left-hand available. See Chart A. Taper Tolerance ±20% of nominal resistance @ 50%; ±3% of mechanical rotation ±20% of nominal resistance @ 50%; ±3% of mechanical rotation Voltage Coefficient .008%/Volt maximum. .008%/Volt maximum Dielectric Withstanding Voltage 750 Vac for 60 seconds @ ATM pressure. 350 Vac for 6 seconds @ 3.4 in. Hg. 900 Vac for 60 seconds @ ATM pressure. 350 Vac for 6 seconds @ 3.4 in. Hg. Series 308/309 Mechanical Specifications Mechanical Rotation 295º ±5º Push Momentary Switch S.P.S.T., 125ma, 28Vdc, push momentary switch. Type DJ Stop Torque 3 lb. in. minimum (metal shaft) Other torque options available. Please contact State Electronics. Rotary Switch S.P.S.T. or S.P.D.T., CCW or CW, 125ma, 28Vdc. Type AL Torque Range .20 to 3.0 oz. in. (Single); .3 to 3.5 oz. in. (Dual); .4 to 4.5 oz. in. (Triple). Other torque options available. Please contact State Electronics. Torque Variation Within control .5 oz. in. maximum Bushing Material: Brass nickel plated Diameters: Supplied in .250" – 32 NEF 2A thread (6.35mm) and .375" –32 NEF 2A thread (9.53mm) Lengths Available in .250" (6.35mm), .375"(9.53mm), and .500" (12.7mm). Styles: Plain, locking and trimmer Shafts Material: Brass nickel plated and stainless steel Diameters: Single shaft: .125" (3.18mm) and .250"(6.35mm) Concentric: .078"/.125" (1.98/3.18mm) and .125:/.250" (3.18/6.35mm) Lengths: Maximum of 3" (76.2mm) from bushing mounting surface; .025"(.635mm) minimum on trimmer or bushing Styles: Plain, slotted flatted and concentric Center Detent Indent device which provides an indexing position. Indent torque: .6 to 3 oz. in. Rotational torque: .3 to 2.5 oz. in. Indent position: Single at 50% mechanical rotation Rotational life: 25,000 cycles Housing Thermoplastic polyester, blue. (U.L. SE-O rating) Hardware Nut: brass, nickel-plated Lockwasher: phosphorous bronze, nickel-plated Solvent Resistance Housing resistant to trichlorethylene, *Chlorethene NU, Freon TMS, **Freon TMC, toluene, MEK, ethyl acetate and gasoline. For solvents not listed, please consult Factory. Note: Units not immersion sealed Terminals Gold-coated PC terminals or solder hook style. PC pins fit .100 grid spacing. Terminal mounting options available Weight (approx.) Metal shaft & bushing: (Single) .19 oz., (Dual) .27 oz., (Triple) .35 oz. * T.M. Dow Chemical Co. **T.M. Dupont Mechanical Specifications continued, next column Page 2 © State Electronics • 36 Route 10, E. Hanover, NJ 07936 973-887-2550 • Toll Free 1-800-688-9711 • Fax 973-887-1940 Internet http://www.potentiometers.com Series 308/309 Operational Specifications AL Switch Specifications Rating 125ma 28Vdc (dry circuit) Operating Temperature Range Series 308: -40ºC to +120ºC Series 309: -40ºC to +150ºC Rotational Life 25,000 cycles under rated load Storage Temperature Range Series 308: -55ºC to +120ºC Series 309: -55ºC to +150ºC BL and BLM Switch Specifications Rotational Life Series 308: linear control, 50,000 cycles under load, (plain bushing). Change not to exceed 10% R. Trimmer life under load is 5,000 cycles. Series 309: linear control, 25,000 cycles under load, (plain bushing). Change not to exceed 5% R. Trimmer life under load is 5,000 cycles. Rating 125ma 30Vdc (dry circuit) Rotational Life 15,000 cycles under rated load Figure 1 Figure 2 Chart A Chart B POWER DERATING GRAPH 100 100 90 90 80 REVERSE Z S 80 60 RATED POWER IN PERCENT % RESISTANCE 70 50 Z 40 30 20 70 60 50 40 10 30 0 0 10 Curves Standard 20 30 40 50 60 70 80 90 100 % EFFECTIVE ROTATION CLOCKWISE 20 10 The “S” taper is linear, the change in resistance value being directly proportional to the degree of rotation. It can be used either as righthand or left-hand taper. The “Z” taper attains 10% resistance value at 50% of clockwise rotation (left hand). 0 0 40 80 120 180 TEMPERATURE IN DEGREES CENTIGRADE The reverse “Z” taper attains 10% resistance value at 50% of counter-clockwise rotation (right-hand). For conformity and special output curves, contact State Electronics. © State Electronics • 36 Route 10, E. Hanover, NJ 07936 973-887-2550 • Toll Free 1-800-688-9711 • Fax 973-887-1940 Internet http://www.potentiometers.com Page 3 Figure 3 Tolerance specifications apply to all layout drawings unless otherwise specified: fractions ±1/64 in. (.379mm); ±1/32 in. (.794mm) over 1 in. (25.4mm); decimals ±.005 in. (.127mm); PC board layout ±.010 in. (.254mm). Chart C Maximum Percent Temporary Resistance Change From 25º Nominal -40ºC 0ºC +25ºC +85ºC +105ºC +120ºC Resistance -55ºC ±5.0 ±4.0 ±1.5 0 ±1.5 ±2.0 ±3.5 100 Ohms +5.5 +2.0 0 ±1.5 ±2.5 ±5.5 +7.0 10K Ohms +6.0 +2.5 0 ±2.0 ±3.5 ±6.0 100K Ohms +8.0 +8.0 +3.0 0 ±2.5 ±4.0 ±7.5 1 Megohm +10.0 For non-linear tapers, multiply chart values by 1.25 Figure 4 Series 308/309 Single, Dual or Triple (Second or Third Section May Be AL Series Rotary Switch) Printed Circuit – Type B-22 “C” Terminal Length: .875” (22.3mm) Maximum Standard PC Terminal Length: .250” (6.36mm) 1.090 ± .015 [27.69 ± 0.38mm] MOUNTING SURFACE BUSHING LENGTH ±.016 [0.41mm] .790 ± .015 [20.07 ± 0.38mm] SHAFT LENGTH ± .037 [0.94mm ] .490 ± .015 [12.45 ± 0.38mm] .500 ± .031 [12.70 ±0.79mm] .031 [0.79mm] + .010 [0.25mm] – .000 .016x45° [.04mm ] CHAMFER LOC. PIN NO. 1 .125 ± .001 DIA. [3.17 ± 0.02mm ] .500 ± .031 [12.70 ± 0.79mm] .531 [13.49mm] "C" ± .015 [0.38mm] 1/4–32–NEF–2A [6.35mm] THREAD .025 [0.63mm] LOC. PIN NO. 2 .025 [0.63mm] .016 [0.41mm] .100 [2.54mm] .200 [5.06mm] .300 [7.62mm] .080 ± .005 [2.03mm] .040 [1.02mm] .031 [0.79mm] + .010 [0.25mm] – .000 .300 [7.62mm] .100 [2.54mm] SERIES 308 - 309 Figure 5 Figure 6 Series 308/309 Solder Lug Terminals Series 308/309 Bushingless Trimmer .530 ±.016 [13.89 ± 0.40mm] .025 [0.63mm] .547 [13.89mm] .484 [12.30mm] .070 [1.78mm] .200 [5.08mm] HOOK WILL ACCEPT 3 NO. 22 AWG WIRES .055 [1.40mm] Page 4 MTG. SURFACE © State Electronics • 36 Route 10, E. Hanover, NJ 07936 973-887-2550 • Toll Free 1-800-688-9711 • Fax 973-887-1940 Internet http://www.potentiometers.com Figure 7 Series 308/309 Single, Dual, or Triple with Panel and Rear Support Plates, Horizontal Mounting .025 [0.63mm] MAX "A" ±.015 [0.38mm] "C" ±.015 [0.38mm] .100 [2.54mm] .040 [1.02mm] .125 ± .005 [3.17 ± 0.13 mm] .015 [0.38mm] P.C. BOARD MTG. SURFACE .400 [10.16mm] SERIES 308-309 – P.C. TYPE B-24 – SINGLE, DUAL OR TRIPLE – PANEL AND REAR SUPPORT PLATES – HORIZONTAL MOUNTING TYPE B24A-1 B24A-1 B24A-1 B24A-1 B24A-1 B24A-1 B24A-1 B24A-1 "A" PLATE .375 [ 9.52mm ] .500 [ 12.70mm ] .625 [ 15.87mm ] .750 [ 19.05mm ] .255* [ 6.47mm ] .300 [ 7.62mm ] .437 [ 11.10mm ] .562 [ 14.27mm ] .200 [5.08mm] "C" TERMINAL .100 [2.54mm] .400 [10.16mm] .250 STD. [ 6.35mm] .375 [ 9.52mm] .500 [ 12.70mm] .625 [ 15.87mm] .125 [ 3.17mm] .175 [ 4.44mm] .315 [ 8.00mm] .425 [ 10.79mm] .100 [2.54mm] .160 [4.06mm] .400 [10.16mm] .450 [11.43mm] * NOT USED AS MTG. SURFACE, PROVIDES STABILITY ONLY FOR P.C. BOARD MTG. .700 [17.78mm] P.C. BOARD LAYOUT Figure 8 Series 308/309 Single or Dual with Center Detent .920 ±.015 [23.37 ± 0.38mm] .600 ±.015 [15.24 ± 0.38mm] .125 ± .001 DIA. [3.17 ± 0.02mm ] .230 [5.84mm] 1/4–32–NEF–2A [6.35mm] THREAD M.S. .035 [0.89mm] .300 [7.62mm] .025 [0.63mm] .100 [2.54mm] .260 [6.60mm] .790 [20.07mm] .059 DIA. [1.50mm] TYP. .400 [10.16mm] .560 [14.22mm] .490 [12.54mm] .260 [6.60mm] .035 DIA. [0.89mm] TYP. .400 .300 [10.16mm] [7.62mm] .100 [2.54mm] © State Electronics • 36 Route 10, E. Hanover, NJ 07936 973-887-2550 • Toll Free 1-800-688-9711 • Fax 973-887-1940 Internet http://www.potentiometers.com .200 [5.08mm] .200 [5.08mm] SINGLE OR DUAL W/ .250 [6.35mm] DIA. BUSHING .125 [3.12mm] DIA. SHAFT P/C OR SOLDER HOOK TERM. AVAILABLE OPTIONS AL ROTARY SWITCH DETENT AT CENTER VARIABLE LOCATING PINS Page 5 Figure 9 Series 308/309 Single or Dual with Center Detent .920 ±.015 [23.37 ± 0.38mm] .600 ±.015 [15.24 ± 0.38mm] .250 [6.35] .230 [5.84mm] .375–32 NEF–2A [9.52mm] THREAD M.S. .035 [0.89mm] .300 [7.62mm] .025 [0.63mm] .100 [2.54mm] .260 [6.60mm] .790 [20.07mm] .200 [5.08mm] .400 [10.16mm] .560 [14.22mm] .490 [12.54mm] .260 [6.60mm] .059 DIA. [1.50mm] TYP. .035 DIA. [0.89mm] TYP. SINGLE OR DUAL W/ .375 [6.52mm] DIA. BUSHING .250 [6.35mm] DIA. SHAFT P/C OR SOLDER HOOK TERM. .400 .300 [10.16mm] [7.62mm] .100 [2.54mm] AVAILABLE OPTIONS AL ROTARY SWITCH DETENT AT CENTER VARIABLE LOCATING PINS .200 [5.08mm] Figure 10 Series 308/309 Single or Triple with High Rotational Torque 1.120 ±.015 [28.45 ± 0.38mm] .800 ±.015 [20.32 ± 0.38mm] .485 ±.015 [12.32 ± 0.38mm] .230 [5.84mm] .300 [7.62mm] .250 [6.35] .375–32 NEF–2A [9.52mm] THREAD M.S. .035 [0.89mm] .025 [0.63mm] .100 [2.54mm] .160 [4.06mm] .990 [25.15mm] .760 [19.30mm] .690 [17.53mm] .460 [14.22mm] .059 DIA. [1.50mm] TYP. .035 DIA. [0.89mm] TYP. .400 [10.16mm] .390 [12.54mm] .160 [6.60mm] .400 .300 [10.16mm] [7.62mm] .100 [2.54mm] Page 6 .200 [5.08mm] SINGLE OR DUAL W/ .375 [6.52mm] DIA. BUSHING .250 [6.35mm] DIA. SHAFT P/C OR SOLDER HOOK TERM. AVAILABLE OPTIONS HIGH ROTATIONAL TORQUE VARIABLE LOCATING PINS .200 [5.08mm] © State Electronics • 36 Route 10, E. Hanover, NJ 07936 973-887-2550 • Toll Free 1-800-688-9711 • Fax 973-887-1940 Internet http://www.potentiometers.com Figure 11 Series 308/309 Dual Concentric .125 ±.001 DIA. [3.17 ± 0.02mm] .078 ±.001 DIA. [1.98 ± 0.02mm] Figure 12 Series 308/309 Type C-10A Printed Circuit Terminals .109 [2.77mm] DIA. ON 2 .400 [10.16mm] .100 [2.54mm] .500 [12.70mm] .100 [2.54mm] .250 [6.35mm] .300 [7.62mm] .035 DIA (ON 6) [0.89mm] P.C. BOARD LAYOUT M.S. .125 [3.17mm] .100 [2.54mm] .300 [7.62mm] Figure 13 Series 308/309 Type A-18A Printed Circuit Terminals .300 [7.62mm] .250 [6.35mm] or .375 [9.52mm] .300 [7.62mm] .100 [2.54mm] .156 [3.99mm] .100 [2.54mm] P.C. BOARD LAYOUT © State Electronics • 36 Route 10, E. Hanover, NJ 07936 973-887-2550 • Toll Free 1-800-688-9711 • Fax 973-887-1940 Internet http://www.potentiometers.com .035 DIA. (ON 3) [0.89mm] Page 7 Figure 14 Series 308/309 Type C-8A Printed Circuit Terminals .300 [7.62mm] .109 [2.77mm] DIA. (ON 2) .500 [12.70mm] .100 [2.54mm] .100 [2.54mm] .250 [6.35mm] .035 DIA (ON 6) [0.89mm] P.C. BOARD LAYOUT .125 [3.17mm] .025 [0.63mm] MAX. .300 [7.62mm] Figure 15 Series 308/309 Type C-9A Printed Circuit Terminals .300 [7.62mm] .300 [7.62mm] .500 [12.70mm] .100 [2.54mm] .100 [2.54mm] .250 [6.35mm] .035 DIA (ON 6) [0.89mm] .025 [0.63mm] MAX. .109 [2.77mm] DIA. (ON 2) .125 [3.17mm] .300 [7.62mm] P.C. BOARD LAYOUT .300 [7.62mm] Series 308/309 Standard Resistance Values Series 308/309 How to Order Stock Values (Ohms) Example: D308-N-PPS-100-Z 308N 100 250 500 D308 1000 2500 5000 10K 25K 50K 100K 250K 500K 1Meg 2.5Meg 5Meg Series 308 = D308 = 308N - PC 100 1000 250 2500 500 5000 308L 500 1000 5000 309N 100 250 500 10K 25K 50K 100K 250K 500K 1Meg 2.5Meg 5Meg 309 = D309 = 10K 25K 50K 1000 2500 5000 100K 250K 500K 10K 25K 50K T309 = 100K 250K 500K 1Meg 2.5Meg 5Meg 309L/D308/T308/D309/T309 Please contact State Electronics for price and delivery Page 8 T308 = N Single Conductive Plastic - 1/2 watt Dual Conductive Plastic - 1/2 watt Triple Conductive Plastic - 1/2 watt Single Cermet - 1 watt Dual Cermet - 1 watt Triple Cermet - 1 watt PPS 100K Z Resistance Value (Ohms) Taper Z = Log RZ = Reverse Log S = Linear Switches S = Rotary switch S.P.D.T. PM = Push Momentary S.P.S.T. PPS = Push/pull switch S.P.D.T. No switch requirement = Blank Shaft & Bushing N = Shaft: 1/8 in (3.18mm) diameter x 3/4 in. (19.05mm) FMS screwdriver slotted Bushing: 1/4 in. (6.35mm) diameter x 1/4 in (6.35mm) length L = Shaft: 1/8 in (3.17mm) diameter x 7/16 in. (11.11mm) FMS screwdriver slotted Locking Bushing: 3/8 in. (9.52mm) x 1/4 in (6.35mm) – 32-NEF 2A thread © State Electronics • 36 Route 10, E. Hanover, NJ 07936 973-887-2550 • Toll Free 1-800-688-9711 • Fax 973-887-1940 Internet http://www.potentiometers.com