document number: 51019 revision 19- j ul-02 www.vishay.com 44 P8P vishay sfernice for technical questions, contact sfer@vishay.com fully sealed container cermet trimmers features military and professional grade 1 watt at 70c, P8Pt 0.5 watt at 70c, P8Px - P8Px cecc 41 101-002 (a, b) gam t1 fully sealed P8P series are available in three mounting configuations: - P8Px, side adjust with pins - P8Py, top adjust with pins - P8Pt, panel mount with solder lugs excellent stability multifinger wiper contact in precious metal models P8Px and P8Py feature a t o-5 transistor type, rugged metal case housing. the cermet track is printed to an alumina substrate allowing high dissipation and ensuring reliable performance under extreme environmental conditions. models P8Px and P8Py are qualified pc 39 and pc 19 respec- tively according to cecc 41 101-002 mod. a and b. outlets pcb mounting } circuit diagram a c b cw (2) (3) (1) P8Px - (pc 39) b P8Pt P8Py - (pc 19) a tolerance unless otherwise specified : 0.5 consult vishay sfernice for panel sealed type dimensions in millimeters slot 0.6 wide x 0.7 deep ? 8.5 2.54 2.54 7.62 ground 3.5 min 8.9 4.7 ? 8.5 0.5 0.5 x 0.4 2.54 8 max 5 min slot 0.6 wide x 0.7 deep 2.54 2.54 b ca 2.54 0.5 8.6 2.54 2.54 ? 11 a b c thread m7 x 0.75 3.2 0.2 shim washers 3.4 0.2 7.8 1 4.5 1 ? 8.6 - 0.1 - 0 0.4 panel thickness 1 2 3 1 2 3 0.5 min 0.5 to 2.5 2.5 to 4 max b c a
www.vishay.com 45 P8P vishay sfernice document number: 51019 revision 19- j ul-02 for technical questions, contact sfer@vishay.com requirements mechanical specifications mechanical travel 300 5 operating torque (max. ncm) 3 end stop torque (max. ncm) 6 unit weight (max. g) 1... 3.1 environmental specifications temperature range ? 55 c + 125 c climatic category 55/125/56 sealing fully sealed container ip67 fully sealed container cermet trimmers electrical specifications resistive element cermet electrical travel 270 15 resistance range 10 ? to 2.2m ? standard series e3 1 - 2.2 - 4.7 and on request 1 - 2 - 5 tolerance standard 10% on request 5% power rating linear 0.5w at 70 c P8Pt 1w at 70 c temperature coefficient see standard resistance element table limiting element voltage (linear law) 250v contact resistance variation 2% rn or 1 ? end resistance (typical) 1 ? dielectric strength (rms) 1000v insulation resistance (500vdc) 10 6 m ? power rating chart rated power in watt 1 0.5 0 0 20 40 60 70 80 100 125 140 P8Pt P8Px - P8Py ambient temperature in degrees celsius 2% 3% 0.5% 1% 1% 2% 0.1% 0.5% 2% 3% dielectric strength: 700v insulation resistance: > 100m ? 0.5% 1% dielectric strength: 1000v insulation resistance: > 10 4 m ? 2% contact res. variat.: < 5% rn 1% contact res. variat.: < 2% rn 2% 3% contact res. variat.: < 5% rn 1% 2% contact res. variat.: < 1% rn typical values and drifts tests climatic sequence long term damp heat rotational life load life rapid temperature change shock vibration conditions 10-55hz 0.75mm or 10 g during 6 hours 50g 11ms 3 successive shocks in 3 directions 5 cycles ? 55 c to + 125 c 1000h at rated power 90 ? /30 ? - ambient temp. 70 c 200 cycles 56 days phase a dry heat 125 c phase b damp heat phase c cold ? 55 c phase d damp heat 5 cycles cecc 41100 ? v 1-2 1.5% v 1-3 ? v 1-2 0.2% v 1 - 3 performance (%) ? r t ? r 1 - 2 r t r 1-2 (%) 1% ? v 1-2 1% v 1-3 2% ? r t ? r 1-2 r t r 1-2 (%) (%) 0.5% ? v 1-2 0.2% v6 0.5%
document number: 51019 revision 19- j ul-02 www.vishay.com 46 P8P vishay sfernice for technical questions, contact sfer@vishay.com marking printed : ? vishay trademark ? nf type if applicable ? series ? style ? ohmic value (in ? , k ? , m ? ) ? tolerance (in %) ? manufacturing date ? marking of terminal : 3. series p8 p grade of quality ohmic value 10k ? tolerance 10% standard resistance values max. power at 70 c max. working voltage linear law v w 10 22 47 100 220 470 1k 2.2k 4.7k 10k 22k 47k 100k 220k 470k 1m 2.2m 0.5 0.5 0.28 0.13 0.06 0.028 2.2 3.3 4.8 7 10.5 15.3 22.4 33.2 48.5 70.7 105 153 224 250 250 250 250 224 150 103 70 47 32 22 15 10 7 4.8 3.2 2.2 1.1 1.53 0.25 0.11 0 + 200 100 ma ppm/ c max. cur. through element t.c. ? 55 c +125 c ? fully sealed container cermet trimmers standard resistance element data style y ordering information ? plastic box of 100 pieces for P8Px and P8Py. ? plastic box of 24 pieces for P8Pt. packaging packaging bl100 P8Px and P8Py: bl100 P8Pt: bl24
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