riedon inc. 300 cypress avenue alhambra ca 91801 (626) 284-9901 (626) 284-1704 www.riedon.com 07/13 ? to-126 pad dimensions ? extremely low profle ? resistances from 0.1 ohm to 51kohms ? power rating to 25 watts ? resistance tolerances to 1% ? tcr to 100ppm/c ? isolated back plate pfc series type pfc10 (to-126) power rating with heatsink 25w ( 2.5w on simple solder pad ) thermal resistance rthj-c 3.6 k/w resistance range 0.1 - 51k ohms e12+ (includes 2.5, 4.0, 5.0, 8.0, and 16) tolerances (others upon request) 1% / 5% temperature coeffcient 100 ppm/k operating temperature -55c to 155c max operating voltage (p * r) capacitance 1.44 pf inductance 8.38 nh withstanding voltage 1500 vac insulation resistance over 1,000 megohm resistor material thick film test conditions results load life 1% 90 min on, 30 min off, 1000 hrs @ 25c humidity 1% 90-95% rh, 0.1w, 1000 hrs @ 40c temperature cycle 0.25% -55c for 30 min, +155c for 30 min, 5 cycles solder heat 0.1% 350c 5c for 3 seconds vibration 0.25% iec60068-2-6 specifications part description: part type - resistance - tolerance pfc10 10 ohms 1% ordering information thick film power smd resistors
riedon inc. 300 cypress avenue alhambra ca 91801 (626) 284-9901 (626) 284-1704 www.riedon.com 07/13 dimensions specifications (continued) pfc series thick film power smd resistors pfc10 (to-126) dimension mm tol. (mm) inches tol. (inches) a 8.2 0.2 0.323 0.008 b 12.0 0.2 0.472 0.008 c 1.0 0.05 0.039 0.002 d 5.08 0.1 0.2 0.004 e 0.75 0.05 0.030 0.002 f 1.78 0.05 0.070 0.002 g 8.51 - 0.335 - h 8.80 - 0.346 - i 14.10 - 0.555 - j 5.08 - 0.2 - k 2.00 - 0.079 - l 3.8 - 0.150 - note: back plate is isolated from both pins. chip construction (exploded view)
riedon inc. 300 cypress avenue alhambra ca 91801 (626) 284-9901 (626) 284-1704 www.riedon.com 07/13 derating power rating notes - the pfc series resistors must be attached to a suitable heat - sink. the maximum internal resistor temperature is 155c. to specify an appropriate heatsink use the following formula : r qh = t max - ( p x r qr ) - t a p where: r qh = thermal resistance of heatsink ( k/w ) r qr = thermal resistance of resistor ( k/w ) t max = maximum temperature of resistor t a = ambient temperature of heatsink ( c ) p = power through resistor ( w ) heatsink temperature (c) 0 25 50 75 100 125 150 175 200 0 20 40 60 80 100 120 power ( % ) power derating curve specifications (continued) copper insert improves thermal conductivity to heatsink. power ratings of 25w can be achieved through active cooling of the heatsink. for more general information on heatsinking please see our training mod - ule on heatsinking by clicking here. pfc series thick film power smd resistors copper insert via-holes
|
