toll free: (888) sei-seis www.seielect.com email: marketing@seielect.com 59 (888) 734-7347 rev 08/07 cf / cfm series ? carbon film resistors * lesser of pr or maximum working voltage. features ? general purpose resistor ideal fo r commercial/industrial applications ? flame retardant coatings standard, flameproof optional (contact factory) ? panasert available on selected sizes (contact factory) ? auto sequencing/insertion compatible ? cfm (mini) an ideal choice when size constraints apply ? cut and formed product is available on select sizes; contact factory for details ? standard lead wire for cf/cfm is coppe r plated steel, with 100% tin overplate ? 100% tin plate on copper wire is available as type cfq/cfqm ? rohs compliant / lead-free electrical specifications type / code power rating (watts) @ 70c maximum working voltage* maximum pulse voltage dielectric withstanding voltage ohmic range and tolerance 2% 5% cf 1/8 0.125w 250v 500v 300v 10 ? ? 4.7m ? 1 ? ? 22m ? cf 1/4 0.250w 350v 600v 500v 1 ? ? 4.7m ? 1 ? ? 22m ? cf 1/2 0.500w 350v 700v 700v 10 ? ? 4.7m ? 1 ? ? 22m ? cf 1 1.000w 500v 1,000v 1,000v 1 ? ? 10m ? 1 ? ? 22m ? cf 2 2.000w 500v 1,000v 1,000v 10 ? ? 1m ? 1 ? ? 22m ? cfm 1/4 0.250w 250v 500v 500v 10 ? ? 1m ? 1 ? ? 22m ? cfm 1/2 0.500w 350v 600v 500v 10 ? ? 4.7m ? 1 ? ? 22m ? how to order cf 1/2 4.7k 5% r sei type code nominal resistance tolerance packaging type description code tolerance values sei types qty description code cf eia standard 1/8 2% e24 cf 1/8, cf 1/4, cf 1/2, cfm 1/4, cfm 1/2 5,000 tap e r cfm mini 1/4 5% e24 cf 1 2,000 pcf panasert cf 1/4 1/2 cf 2 1,000 pcfm panasert cfm 1/2 1 cf 1/4; cfm 1/2 2,000 ammo q cfq tin plating on copper wire 2 cf 1/8, cf 1/4, cfm 1/4, cfm 1/2 5,000 t cfqm tin plating on copper wire (mini) cf 1/2 2,000 cf 1, cf 2 1,000 cf 1/4; cfm 1/2 5,000 panasert p all 1,000 bulk a
toll free: (888) sei-seis www.seielect.com email: marketing@seielect.com cf / cfm series ? carbon film resistors 60 (888) 734-7347 rev 08/07 operating temperature range : -55c to +155c mechanical specifications type / code a body length b body diameter c lead length (bulk) d lead diameter units cf 1/8 0.13 + 0.01/-0 3.2 + 0.2/-0 0.07 0.01 1.8 0.2 1.10 0.12 28.0 3.0 0.018 0.002 0.45 0.05 inches mm cf 1/4 0.26 0.02 6.5 0.5 0.09 0.01 2.3 0.2 1.10 0.12 28.0 3.0 0.022 0.002 0.56 0.05 inches mm cf 1/2 0.33 0.02 8.5 0.50 0.11 0.02 2.7 0.5 1.10 0.12 28.0 3.0 0.024 0.002 0.60 0.05 inches mm cf 1 0.43 0.04 11.0 1.0 0.18 0.02 4.5 0.5 1.18 0.12 30.0 3.0 0.031 0.004 0.80 0.1 inches mm cf 2 0.59 0.04 15.0 1.0 0.20 0.02 5.0 0.5 1.18 0.12 30.0 3.0 0.031 0.004 0.80 0.1 inches mm cfm 1/4 0.13 + 0.01/-0 3.2 + 0.2/-0 0.07 0.01 1.8 0.2 1.10 0.12 28.0 3.0 0.018 0.002 0.45 0.05 inches mm cfm 1/2 0.26 0.02 6.5 0.5 0.09 0.01 2.3 0.2 1.10 0.12 28.0 3.0 0.022 0.002 0.56 0.05 inches mm performance characteristics test standard / method requirement short time overload eia-rs-172-b 3.2.6 0.5% resistance to solder heat mil-std 202, method 210 0.5% dielectric withstanding voltage jis c 5202 5.6 0.5% load life mil-std 202, method 108 1.0% terminal strength mil-std 202, method 211 0.2% moisture resistance mil-std 202, method 106 0.5%
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