ntc thermistor tcf type lead frame for temperature sensing/compensation thinking electronic industrial co., ltd. 1 www.thinking.com.tw 2008.03 features 1. rohs compliant 2. body size 3mm 3. radial lead resin coated 4. -40 ~ +100 operating temperature range 5. wide resistance range 6. cost effective 7. agency recognition: ul /cul recommended applications 1. home appliances (air conditioner, refrigerator, electric fan, electric cooker, washing machine, microwave oven, drinking machine, ctv, radio.) 2. automotive electronics 3. computers 4. digital meter part number code 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 structure and dimensions product type tcf thinking ntc thermistor tcf type size 3 3mm zero power resistance at 25 (r 25 ) 102 1k 103 10k 473 47k tolerance of r 25 f 1% g 2% h 3% j 5% k 10% b value first two digits 30 31 32 U 40 41 U 30 31 32 U 40 41 U b value last two digits 0 a 1 b 2 U h 8 j 9 k 00 05 10 15 20 U 75 80 85 90 95 tolerance of b value 1 1% 2 2% 3 3% optional suffix y rohs compliant appearance a 0.5 x 0.2mm straight lead definition of b value a b 25/85 b b 25/50 3.8max. (unit:mm) 0.5 0.05 2.5 0.5 2.4max. tiebarcut 0.7 0.05 0.2 0.02
ntc thermistor tcf type lead frame for temperature sensing/compensation thinking electronic industrial co., ltd. 2 www.thinking.com.tw 2008.03 electrical characteristics zero power resistance at 25c tolerance of r 25 b 25/85 value tolerance of b value max. power rating at 25c dissipation factor thermal time constant operating temperature range safety approvals part no. r 25 (k ) ( %) (k) (%) p max (mw) (mw/c) (sec.) t l ~t u (c) ul cul tcf3a202 318* 2 3180 ? tcf3a502 33c* 5 3325 ? ? tcf3a103 34d* 10 3435 ? ? tcf3a123 347* 12 3470 ? ? tcf3a203 40b* 20 4015 ? ? tcf3a303 409* 30 4090 ? ? tcf3a333 409* 33 4090 ? ? tcf3a473 409* 47 4090 ? ? tcf3a503 406* 50 4060 ? ? tcf3a104 419* 100 1 2 3 5 10 4190 1 2 3 150 approx. 2 approx. 12 -40~+100 ? ? note 1: = tolerance of r 25 , * = tolerance of b value note 2: ul/ cul file no e138827 power derating curve 100 0 25 t u 0 t l ambient temperature ( ) max power rating (%) t u maximum operating temperature ( ) t l minimum operating temperature ( ) for example ambient temperature(ta)=55 maximum operating temperature(t u ) 100 p ta =(t u -ta)/(t u -25) pmax 60% pmax
ntc thermistor tcf type lead frame for temperature sensing/compensation thinking electronic industrial co., ltd. 3 www.thinking.com.tw 2008.03 0.1 1 10 100 1000 10000 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 r-t characteristic curves (representative) soldering recommendation wave soldering profile recommended reworking conditions with soldering iro n item conditions temperature of soldering iron-tip 360 (max.) soldering time 3 sec (max.) distance from thermistor ? 2 mm (min.) tcf3a202 318*~tcf3a104 419* resistance(k ? ) (k temperature ( ) tcf3a104 419* tcf3a473 409* tcf3a303 409* tcf3a203 40b* tcf3a123 347* tcf3a103 34d* tcf3a502 33c* tcf3a202 318* temperature 13020 260 max tamb cooling time soldering preheating 30~90 sec. 1 sec. 10 sec. note 1 note 2 note 3 note 1: (1~3 )/sec note 2: approx. 200 /sec note 3: 5 /sec. (max)
ntc thermistor tcf type lead frame for temperature sensing/compensation thinking electronic industrial co., ltd. 4 www.thinking.com.tw 2008.03 reliability item standard test conditions / methods specifications tensile strength of terminals iec60068-2-21 gradually applying the force specified and keeping the unit fixed for 101 sec terminal cross-sectional area force (mm2) (kg) 0.1 ntc thermistor tcf type lead frame for temperature sensing/compensation thinking electronic industrial co., ltd. 5 www.thinking.com.tw 2008.03 packaging bulk packing 1000 pcs/ bag storage conditions of products storage conditions 1. storage temperature -10 ~+40 2. relative humidity Q 75%rh 3. keep away from corrosive atmosphere and sunlight . period of storage 1 year
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