STAM MN TELL LUM gt) CUT CAI) Gla 1/2 in. sq. 0.5 Watt Series 409 Sealed Potentiometer 1/2 in. sq. 1.0 Watt 408: Modular Style, Conductive Plastic 409: Modular Style, Thick-Film Cermet Description The series 408 and 409 are high-performance potentiometers, designed to meet wave soldering applications for mounting to PC boards. They are also available with S.P.S.T. or S.P.D.T. rotary switch modules, S.P.D.T. push-pull or momentary switch modules and/or potentiometer modules in multiple sections up to three sections. Features * Compact - 1/2 in. (12.7mm) miniature, totally sealed, modular size. * Precision Made - screen-printed conductive plastic and thick-film cermet elements. + Cost-effective - Elimination of hand soldering. * Rugged - 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. * Stability - Series 408 - 40C to +120C; Series 409 - 40C to 150C operating temperature. Resistance Tolerance Resistance Range End Resistance Power Rating Effective Rotation Dynamic Noise Series 408 Electrical Specifications Series 409 Electrical Specifications 100Q to 5 Megohms, linear; 500Q to 2 Megohms, non-linear Linear, thru 500KQ, +10%; above 500K to 5 Megohms, +20%. Non-linear thru 1OOKQ, +10%; above 100Q +20%. Linear, 4922 maximum each end. Taper low side. 42 maximum. High side 1% of total R. 5 watt @70C. Derated linearly to zero watts at 120C. See Chart B, page 37. For non linear tapered units or PC mounting, derate by 50%. Trimmer style, derate by 50%. 265 5 without rotary switch; 240 +5 with rotary switch. 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%. 35 Linear: SQ to 5 Megohms Taper: 100Q to 2 Megohms +10% standard; +5% special. Trimmers +20%. 2Q maximum, 59 to 2500Q. 4Q. maximum, 5KQ and above. 1 watt @ 85C. Derate linearly to zero watts at 150C. For tapered units, trimmers or PC mounting, derate 50%. 250 +10 -5 without rotary switch; 225 +10 -5 with rotary switch. 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 pageElectrical Specifications continued Electrical Rotation Working Voltage Resistance Temperature Characteristics Linearity Non-linear Tapers Taper Tolerance 295 +5 350 Vde across end terminals, but power not to exceed rating. See Chart C, page 38. +5% independent Right or left-hand available. See Chart A, page 37. +20% of nominal resistance @ 50% +3% of mechanical rotation. 295 +5 350 Vdc across end terminals, but power not to exceed rating. See Chart C, page 38. +5% independent Right or left-hand available. See Chart A, page 37. +20% of nominal resistance @ 50% +3% of mechanical rotation. Voltage Coefficient .008%/Volt maximum .008%/Volt maximum Dielectric Withstanding 750 Vac for 60 seconds @ ATM 900 Vac for 60 seconds @ ATM Voltage pressure. 350 Vac for 6 seconds @ pressure. 350 Vac for 60 seconds @ 3.4 in. Hg. 3.4 in. Hg. Series 408/409 Mechanical Specifications Mechanical Rotation 295 +5 Stop Torque 3 Ib. in. minimum (metal shaft) 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 consult Factory. Torque Variation Within control .5 oz. in. maximum Bushing Lengths .25 in. (6.35mm), .375 in, (9.53mm), .5 in. (12.7mm) Shafts, Standard .125 in. (3.18mm) diameter; brass, nickel-plated Shaft Lengths Lengths from mounting surface to 3 in. (76.2mm) in 1/64 in. (.397mm) increments Push-Pull and Momentary Switch S.P.D.T., 250ma, 30Vdc, push-pull (type BL). Momentary (type BLM). Rotary Switch S.P.S.T. or S.P.D.T., CCW or CW, 125ma, 28Vdc. (Type AL). Mechanical Specifications continued, next column Mechanical Specifications continued Seal O-ring shaft seal standard all styles, and the complete unit is sealed for wave solder and wash processing. The shaft seal withstands 3 PSI pressure. Mounting seals are available. See Chart D, page 38. 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, toulene, MEK, ethyl acetate and gasoline. For solvents not listed, please consult Factory. 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 0z., (Triple) .35 oz. *T.M. Dow Chemical Co. **T.M. DuPont 36Series 408/409 Operational Specifications Operating Temperature Range Series 408: -40C to +120C Series 409: -40C to +150C Storage Temperature Range Series 408: -55 to +120C Series 409: -55C to +150C Rotational Life Series 408: linear control, 50,000 cycles under load, (plain bushing). Change not to exceed 10% R. Trimmer life under load is 5,000 cycles. Series 409: linear control, 25,000 cycles under load, (plain bushing). Change not to exceed 5% R. Trimmer life under load is 5,000 cycles. AL Switch Specifications Rating 125ma 28Vdc (dry circuit) Rotational Life 25,000 cycles under rated load BL and BLM Switch Specifications Rating 250ma 30Vdc (dry circuit) Rotational Life 15,000 cycles under rated load Figure 1 Chart A AN i % RESISTANCE & 4 PJ . / . Z , V ; a PL .o 0 2 7 8 D2 OO MD BO % EFFECTIVE ROTATION CLOCKWISE Curves Standard The "S" taper is linear, the change in resistance value being directly proportional to the degree of rotation. It can be used either as right- hand or left-hand taper. The "Z" taper attains 10% resistance value at 50% of clockwise rotation (left-hand), The reverse "Z" taper attains 10% resistance values at 50% of counter-clockwise rotation (right-hand). For conformity and special output curves, consult Factory Figure 2 Chart B POWER DERATING GRAPH RATED POWER IN PERCENT a 0 L 120 160 TEMPERTURE IN DEGREES CENTIGRADE 37Figure 3 Figure 4 Chart C Chart D Nominal | Maximum Percent Temporary Resistance Change From 25 | | Resistance | -55C | -40C | OC | +25C | +55C | +85C | +120C +e] | wwe souer 100 Ohms | +5.0 | +4.0 +15 0 +15 #2.0 | +3.5 MS 10k Ohms | +7.0 | +5.5 +2.0 0 +15 2.5 45.5 100k Ohms) +8.0 | +6.0 | +2.5 | 0 +2.0 | +3.5 | +60 | 1 Megohm | +10.0 | +8.0 | +30 | 0 #25 | +40 | +7.5 | MS E For non-linear tapers, multiply chart values by 1.25. TI ry ee oe ms WASH n fe [ip ol Nes ps.) = BAKE ORY 7= 18 B 14 Tolerance specifications apply to all layout drawings unless otherwise specified: fractions +1/64 in. (.379mm); +1/32 in. (.794mm) over | in. (25.4mm); decimals +.005 in. (.127mm); PC board layout +.010 in. (.254mm). Figure 5 Series 408/409 Single, Dual or Trip! le (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 1/16 1/4 = MOUNTING SURFACE om oh p ft it a }- 15/32 + 1/64 1 [11.91mm] ive 1/32 + 1/64 = [0.7mm] ee eee eee f of. f f [0.41mm] I 1 1 I | hae 300 00 ba eat TIME, MINUTES Wave Solder and Board Wash Parameters Recommended Profile, Temperature on PC Board Process Limits Temp. Time Preheat Maximum 195F 1 Min. Solder Temperature Maximum -550F Maximum Differential Temperature After Solder Into Wash (3/4T) 72F Wash Temperature Dry Tempurature 150-160F 1-1/2Min. 160-220F 2 Min. 1/2 1/32 [12.70mm] .040 [1.02rm] 080 + .005Figure 6 Series 408/409 Solder Lug Terminals Figure 7 Series 408/409 Bushingless Trimmer o 17/32 + 1/64 025 [13.40mm] [0.64mm] 35/64 _ [13.89mm] L MOUNTING SURFACE Figure 8 Series 408/409 Single, Dual, or Triple with Panel and Rear Support Plates, Horizontal Mounting ,025 [0.640] =E>) PC Board Layout 035 DA. TYPICAL Doh 050 DIAMETER TYPICAL [1.50r] yr rte teint | gh gf dS te | --O ~ T_.100 [254] i | Lj 150 [0.38] | [10.16en) (nase) | [17 Jame) ae |, a SSSSsgeSSSSSSSSSSs "Kk *c TYPE (PLATE) (TERMINAL) B-24-1 3/8 [9.52mm] .250 [6.35mm] STANDARD B-24-2 1/2 [12.70mm] 375 [9.40mm] B-24-3 5/8 [15.88mm] 500 [12.70mm] B-24-4 3/4 [19.05mm] .625 [15.88mm] B-24-5 255 [648mm] 125 [3.18mm] 39a Series 408/409 Pot and BL Series Push-Pull or BLM Momentary Switch Printed Circuit Board Layout (Available with B-24 Support Plates) ; + 1/64 [20.64mm] | | 003 TYPICAL TRAVEL _ [2.36mm] r _J 250 [1.50mi] DAMETER (OH 4) (sz eee Sip -} es Figure 10 Series 408/409 Type C-10 Printed Circuit Terminals P.C. BOARD LAYOUT Bie ow. fon 2 [1270] TT -{_- 250 r MOUNTING SURFACE [635mm 125 [3.18mm] ~t- t 300=| jf .100 [7.62mm] [254mm] 40Figure 11 Series 408/409 Type A-18 Printed Circuit Terminals 300 [an P.C. BOARD LAYOUT ; 300 rammed) 1 -100 [2.54mm] File --4-fo# 1 rT -T | To } MOUNTING SURFACE 035 DIAMETER (ON 3) [254mm] 0.89mm. Figure 12 - Series 408/409 Type C-8 Printed Circuit Terminals PC BOARD LAYOUT | ne tou __ er _ -100 [254mm] - MOUNTING SURFACE ~ yr T f iC ted J [3.18] on [24m] [6-58] O35 DIAMETER (ON 3) | 300 | {0.80rm] [7.62mm] 7/64 DMETER (ON 2) [278mm] Figure 13 7 Series 408/409 Type C-9 Printed Circuit Terminals P.C. BOARD LAYOUT | | TH | = _e--|_-_e-+ i 100 [254mm] [12.70] -+-;- FE tum) TL ~ et - | og se it )_|_cpeeataagre suse oes wasn J l OS, METER (0 5) ee ae 8 [782m] (7.82m0 (2-ree] 41Figure 14 Series 408/409 ( see Figure 4 for other dimensions) 1/4 in. (6.35 mm) Diameter Shaft 3/8 in. (9.53 mm) Diameter Bushing [115m] Series 408/409 Standard Resistance Values Standard Resistance Values continued D408N(RZ) (Same resistance & taper in both sections) 500 10K IK 25K 50K 100K D408N (Z/RZ) (Same resistance both sections. Panel Z taper, rear RZ taper.) 1K 10K 50K 5K 25K 409N 100 2.5K 50K IMeg 250 5K 100K 2.5Meg 500 10K 250K 5Meg 1K 25K 500K 409N(Z) 1K 5K 50K 2.5K 10K SUPPORT MOUNTING (Optional)* Catalog A Number (Plate) B-24A-1 375 B-24A-2 500 B-24A-3 625 B-24A-4 750 B-24A-5 255 *Rear plate only. Cc (Terminal) 250 375 500 -625 125 See TTC UM eli MOO Lat Cle Example: - oT Series 408 = Single D408 = Dual 409 = Single Shaft & Bushing N = Shaft: 1/8 in. (3.18mm) S Resistance Value (Ohms) Taper Z= Log RZ = Reverse Log Linear = Blank diameter x 3/4 in, (19.05mm) FMS screwdriver slotted. Bushing: 1/4 in. (6.35mm) diameter x 1/4 in, (6.35mm) length Switches 8 = Rotary switch $8.P.D.T. PPS = Push/pull switch $.P.D.T. No switch requirement = Blank Stock Values (Ohms) 408N ; 100 2.5K 50K Meg 250 5K 100K 2.5Meg 500 10K 250K 5Meg IK 25K 500K 408N(Z) 1K 10K 50K 5K 25K 100K 408N(RZ) _ 500 10K 50K IK 25K 100K 408NS 100 IK 10K 100K 500 5K 50K 408NS(Z) a IK 10K 50K 5K 25K 100K 408NPPS 100 IK 10K 50K 500 5K 25K 100K 408NPPS(Z) 500 5K 25K 100K IK 10K 50K D408N (Same resistance in both sections) 100 2.5K 50K 1Meg 250 5K 100K 2.5Mg 500 10K 250K 5Meg Ik 25K 500K D408N(Z) (Same resistance & taper in both sections) 500 5K 25K 100K IK 10K 50K Standard Resi: e Values continued, next col: 42