PTFT vishay dale www.vishay.com 40 document number 33014 revision 29-jul-02 for technical questions, contact thermistor1@vishay .com standard resistance values 10 120 1.5k 12 150 1.8k 15 180 2.2k 18 220 2.7k 22 270 3.3k 27 330 3.9k 33 390 4.7k 39 470 5.6k 47 560 6.8k 56 680 8.2k 68 820 10k 82 1k 12k 100 1.2k 15k part number power rating maximum working voltage rcwv 1 PTFT 0603 75mw 30v dc PTFT 0805 100mw 40v dc PTFT 1206 125mw 50v dc 1 rated continuous working voltage is maximum working voltage or square root of the power rating times resistance value, whicheve r is less. linear ptc thermistors, surface mount chip features solderable wraparound terminations. alumina substrate base with ptc thick film element. 0603, 0805, and 1206 sizes available. available in tape and reel packaging. standard tolerances: 5%, 10%. contact factory for non-standard tolerance. linear from - 55 c to + 125 c. maximum linear deviation: 0.01%/ c. standard electrical specifications tcr lot tcr* ppm tolerance - 55 c to + 125 c ppm 3500 300 3300 300 3100 300 2900 300 2700 300 2500 300 2300 300 r 25 ? value range (5% and 10% tolerance)** 0603 0805 1206 min. max. min. max. min. max. 10 - 22 10 - 39 10 - 47 27 - 120 47 - 180 56 - 220 150 - 270 220 - 330 270 - 470 330 - 560 390 - 680 560 - 1k 680 - 1.2k 820 - 1.5k 1.2k - 3.9k 1.5k - 5.6k 1.8k - 6.8k 4.7k - 8.2k 6.8k - 10k 8.2k - 10k 10k - 15k *contact vishay dale if closer tcr lot tolerance is desired. **other r 25 values and tolerances are available upon request. ordering information PTFT model 1206 (e.i.a.) dimension 1002 r 25 k tolerance k = 10% j= 5% l linear example: PTFT 1206 l 1002 k first 3 digits are significant figures, 4th digit is the multiplier standard technical specifications
www.vishay.com 41 PTFT vishay dale document number 33014 revision 29-jul-02 for technical questions, contact thermistor1@vishay .com performance* 1k and below above 1k high temperature exposure (100 hours @ 125 c) 1% 1% effects of bonding (10 sec. solder dip @ 260 c) 1% 1% thermal shock (30 min. @ - 65 c, 30 min. @ 125 c, 5 cycles) 1% 5% low temperature operation (maximum rated power for 2 hours @ - 65 c) 1% 10% short time overload (2.5 x rcwv for 5 seconds) 1% 20% moisture resistance (240 hours, 10 cycles) 4% 5% load life (1000 hours 70 c, maximum rated power 1.5 hours on, 5 hours off) 2% 10% load humidity (1000 hours @ 85 c, 85% rh, and 10% rcwv) 5% 15% solderability (95% coverage p/f) p p leaching (physical damage p/f) p p test*** maximum % ? r** *environmental performance specifications use test procedures as outlined in mil-r-23648d and mil-std-202. **PTFT s are esd sensitive. ***test reading accuracy of 0.3%. linear ptc thermistors, surface mount chip overglaze thermistor alumina substrate inner electrode nickel barrier solderable coating dimensions in inches [millimeters] part number PTFT0603 PTFT0805 PTFT1206 ab cd e 0.063 0.006 0.031 + 0.006 - 0.002 0.020 0.004 0.012 0.008 0.012 0.008 [1.60 0.15] [0.80 + 0.15 - 0.05] [0.50 0.10] [0.30 0.20] [0.30 0.20] 0.079 0.006 0.049 0.006 0.020 0.006 0.016 0.010 0.016 0.010 [2.00 0.15] [1.25 0.15] [0.50 0.15] [0.40 0.25] [0.40 0.25] 0.124 0.006 0.063 0.006 0.022 0.006 0.020 0.010 0.020 0.010 [3.15 0.15] [1.60 0.15] [0.56 0.15] [0.50 0.25] [0.50 0.25] a b d c e construction
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