FC4T Series Metal Foil Low Value Chip The FC4T chip features four terminals, also known as a “Kelvin” configuration. This configuration enables current to be applied through two opposite terminals and a sensing voltage to be measured across the other two terminals, eliminating the resistance and temperature coefficient of the terminals for a more accurate current measurement. Ohmite’s proprietary Metal Foil technology offers an excellent Temperature Coefficient of Resistance (TCR) even for very low resistance values ( down to 50ppm). S e r i e s S p e c i f i c at i o n s Pkg. Series Size FC4T 1206 Power Resistance Rating Range TCR (W @70°C) (Ω) (ppm/°C) 0.5W 0.005-0.100 50ppm Tolerance 0.5%, 1% c h a r a ct e r i st i cs Resistance Tolerance 0.5% and 1% standard Temperature Coefficient within ±50ppm, ±100ppm for 5mΩ Coating Material Epoxy resin Terminals Cu/Ni/Sn Max. Current √(Max. power÷ Resistance value) Res. of Electrodes <5mΩ Derating 100 Percent Rated Power Resistance 0.005-0.100 Operating Temp. Range -55°C to +155°C Rated Power 0.5 watt 80 -55° 70° 60 40 20 155° 0 0 -75 -50 50 100 150 175° Ambient Temperature, °C Construction Epoxy resin marking Cu-alloy resistor Alumina Substrate Epoxy resin protection coat Peeling Strength of Seal Tape F = Peel-back force: 0.1 - 0.7N (10 - 71gf) 165°~180° F Electrode (Cu+Ni+Sn) (continued) 12 1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • [email protected] FC4T Series Metal Foil Low Value Chip p e r f o r m a n c e c h a r a ct e r i st i cs Test Items Performance Short time overload ±(1.0%+0.5mΩ) High Temp. Exposure ±(1.0%+0.5mΩ) Test Methods P= 2.5Pr; T=25 ±2ºC, t=5sec.; IEC60115-1 4.13 T=+170 ±2ºC; t=1000h; IEC60115-1 4.25 Low Temp. Storage ±(1.0%+0.5mΩ) Moisture Load Life ±(2.0%+0.5mΩ) T=-55 ±2ºC; t=1000h; IEC60115-1 4.25 Thermal Shock ±(1.0%+0.5mΩ) Load Life at 70ºC ±(2%+0.5mΩ) Solderability The covered area >95% Resistance to Solder Heat ±(1.0%+0.5mΩ) Mechanical Shock ±(1.0%+0.5mΩ) Vtest=Vmax; T=60 ±2ºC; RH=95%; t= 90min ON, 30min OFF, 1000h; IEC60115-1 4.25 (60℃, 95%RH) -55ºC 30min. / R.T. 3min. / +150ºC 30min. / R.T. 3min ], 100cycles; IEC60115-1 4.19 Vtest=Vmax; T=70 ±2ºC; t=90min ON; IEC60115-1 4.25 Dip into solder at T=245 ±5ºC, t=3 ±0.5sec.; IEC60115-1 4.17 Through Reflow T=275 ±5ºC, t=20 ±1sec.; IEC60115-1 4.18 a=100G, t=11ms, 5 times shock; IEC60115-1 4.21 Substrate Bending ±(1.0%+0.5mΩ) Span between fulcrums 90mm; bend width 2mm; test board glass-epoxy; Thickness=1.6mm; IEC60115-1 4.33 dimensions (mm ±0.2) L b c d e W V a Part FC4T Schematic f t V Layout for illustration only, part can be rotated 180° without effect to the circuit. I I V = sensing terminal (voltage) I = current terminal g L W a b c t d e f g 3.2 1.6 0.6 0.55 0.3 0.6 1.10 0.30 1.2 1.8 Tape and Reel T K P D0 Direction of feed P2 E F D1 T1 Part FC4T W P 8.00 ±0.30 4.00 ±0.10 B N A W A P A 178 ±5 W1 9 ±1 N 60 ±2 W1 P2 A B D0 F E T T1 K 2.00 ±0.10 2.05 ±0.20 3.65 ±0.20 1.50 ±0.10 3.50 ±0.10 1.75 ±0.10 0.20 ±0.10 Max. 0.1 0.85 ±0.20 ORDERIN G IN F ORMA T ION RoHS Compliant FC4TR010DER Series Ohms Tolerance Tape & Reel F= 1% 5000/reel D = 0.5% Standard Part Numbers 1% FC4TR005FER FC4TR010FER FC4TR015FER FC4TR050FER FC4TR100FER 0.5% FC4TR010DER FC4TR015DER FC4TR050DER FC4TR100DER rev 1/18-3 1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • [email protected] 13