power ntc thermistors nsp power type ntc thermistors * introduction: ??vatronics is suitable for the use in switching power supply, ups power supply, electric heaters, electronic energy-saving lighting, electronic ballast and electronic devices for power supply circuit protection; and for the use in color video tube, incandescent bulb and other lighting devices for filament protection; it features small size, high power, strong resistance to surge current, quick response, high b value, low residue resistance, long service life, high reliability, high security and wide applications. * applications: ??suitable for the use in switching power supply, ups power supply, electric heaters, electronic energy-saving lighting, electronic ballast and electronic devices for power supply circuit protection; and for the use in color video tube, incandescent bulb and other lighting devices for filament protection. * features: ??? small size, high power and strong resistance to surge current; ??- quick response; ??? high in b value and low in residual resistance; ?? long service life and high reliability; ?? high security and wide applications. vatronics part number system ntc 5d 13 (1) (2) (3) (1)product type: ntc (2)risistor value at 25c =5c (3)diameter =13mm file:///c|/index/varistor/powerntcthermistors-p.htm (1 / 5) [2003-12-17 11:01:57]
power ntc thermistors code (chip diameter) a chip diameter max b lead wire length min c pitch d chip thickness max e ? lead wire diameter f distance from lead wire to chip max g - molding distance h - post- molding pitch min 20 22 25 7.51/101 7 1.0 4 283.5 4.5 15 16.5 25 7.51/101 6 1.0 4 243.5 4.5 13 14.5 25 7.51 6 0.8 4 223.0 4.5 11 12.5 25 51 5 0.8 4 202.0 3.0 9 10.5 25 51 5 0.6 4 182.0 3.0 note: ? "e" value may be 0.6 for resistors for which the chip's diameter is f13and the working current is 2a. - "g" column and "h" column stand for bend dimensions of the lead. specifications list model number r 25 20% (w) max. current (a) approx. resistance in max. current at 25? ( w) dissipation power (mw/?) time constant ?s? operating temperature ??? ntc3d-9 3 4 0.12 11 35 ntc4d-9 4 3 0.19 11 35 ntc5d-9 5 3 0.21 11 34 ntc6d-9 6 2 0.315 11 34 ntc8d-9 8 2 0.4 11 32 ntc10d-9 10 2 0.458 11 32 ntc12d-9 12 1 0.652 11 32 ntc16d-9 16 1 0.802 11 31 ntc20d-9 20 1 0.864 11 30 ntc30d-9 30 1 1.022 11 30 ntc50d-9 50 1 1.252 11 30 ntc80d-9 80 0.8 2.01 11 30 ntc2r5d-11 2.5 5 0.095 13 43 file:///c|/index/varistor/powerntcthermistors-p.htm (2 / 5) [2003-12-17 11:01:57]
power ntc thermistors -55~+200 ntc3d-11 3 5 0.1 13 43 ntc4d-11 4 4 0.15 13 44 ntc5d-11 5 4 0.156 13 45 ntc6d-11 6 3 0.24 13 45 ntc8d-11 8 3 0.255 13.5 47 ntc10d-11 10 3 0.275 14 47 NTC12D-11 12 2 0.426 14 48 ntc16d-11 16 2 0.47 14 50 ntc20d-11 20 2 0.512 15 52 ntc30d-11 30 1.5 0.667 15 52 ntc50d-11 50 1.5 1.021 15 51 ntc80d-11 80 1.2 1.656 15 51 ntc1r3d-13 1.3 7 0.062 13 60 ntc1r5d-13 1.5 7 0.073 13 60 ntc2r5d-13 2.5 6 0.088 13 60 ntc3d-13 3 6 0.092 14 60 ntc4d-13 4 5 0.12 15 67 ntc5d-13 5 5 0.125 15 68 ntc6d-13 6 4 0.17 15 65 ntc7d-13 7 4 0.188 15 65 ntc8d-13 8 4 0.194 15 60 ntc10d-13 10 4 0.206 15 65 ntc12d-13 12 3 0.316 16 65 ntc15d-13 15 3 0.335 16 60 ntc16d-13 16 3 0.338 16 60 ntc20d-13 20 3 0.372 16 65 ntc30d-13 30 2.5 0.517 16 65 ntc1r3d-15 1.3 8 0.048 18 68 ntc1r5d-15 1.5 8 0.052 19 69 file:///c|/index/varistor/powerntcthermistors-p.htm (3 / 5) [2003-12-17 11:01:57]
power ntc thermistors ntc2r5d-15 2.5 7 0.07 19 79 ntc3d-15 3 7 0.075 18 76 ntc4d-15 4 6 0.097 20 76 ntc5d-15 5 6 0.112 20 76 ntc6d-15 6 5 0.155 20 80 ntc7d-15 7 5 0.173 20 80 ntc8d-15 8 5 0.178 20 80 ntc10d-15 10 5 0.18 20 75 ntc12d-15 12 4 0.25 20 75 ntc15d-15 15 4 0.268 21 85 ntc16d-15 16 4 0.276 21 70 ntc20d-15 20 4 0.288 17 86 ntc30d-15 30 3.5 0.438 18 75 ntc0r7d-20 0.7 12 0.018 25 89 ntc1r3d-20 1.3 9 0.037 24 88 ntc3d-20 3 8 0.055 24 88 ntc5d-20 5 7 0.087 23 87 ntc6d-20 6 6 0.113 25 103 ntc8d-20 8 6 0.142 25 105 ntc10d-20 10 6 0.162 24 102 ntc12d-20 12 5 0.195 24 100 ntc16d-20 16 5 0.212 25 100 note: vatronics power type ntc thermistor comes with optional chip diameter of f 7, 8, 9, 10, 11, 13, 15, 18, 20, 22, 25, 30, 35, etc. for required specifications not shown, please do not hesitate to contact us. file:///c|/index/varistor/powerntcthermistors-p.htm (4 / 5) [2003-12-17 11:01:57]
power ntc thermistors a--chip diameter, b--lead wire length, c--pitch, d--chip thickness, e--lead wire diameter, f--distance from lead wire to chip, g--molding distance, h--post-molding pitch vatroncis technologies limited http://www.vatronics.com sales@vatronics.com file:///c|/index/varistor/powerntcthermistors-p.htm (5 / 5) [2003-12-17 11:01:57]
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