A heat sink is a device that incorporates a fan or another mechanism to reduce the temperature of a hardware component (e.g., processor). There are two heat sink types: active and passive. The picture is an example of a heat sink with both active and passive cooling mechanisms.
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Mosfet Heatsink,Aluminum Alloy Mosfet Heatsink,1000W Mosfet Heatsink,High Voltage Mosfet Timeplex Industrial Limited , https://www.catimeplexhk.com
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The material used partly determines the extent of thermal conductivity. Copper and aluminum are the most widely used materials, though aluminum is the more common choice because copper is more expensive and heavier. Aluminum 6061 and 6063 are widely used with a thermal resistance of 166 and 201 W / mK, respectively.
The product name specification material steel factory/origin price (yuan/ton) is Φ6.5mm higher than yesterday's last month. General line Φ6.5mm Q235 Handan Steel 5050 10 30 -120 Common line Φ8mm Q235 Handan Steel 5040 10 20 -130 Common line Φ10mm Q235 韶Steel 5090 10 30 -80 High Line Φ6.5mm Q235 Guangzhou Steel 5100 20 50 -60 High Line Φ6.5mm Q235 Handan Steel 5110 30 30 -70 High Line Φ6.5mm Q335 Beitai 5030 10 10 -110 High Line Φ6.5mm Q335 Ping Steel 5060 0 10 -110 Rebar Φ12mm HRB335 Ma Steel 5360 20 20 -40 Rebar Φ12mm HRB335 Tang Steel 5360 20 20 -40 Rebar Φ18-25mm HRB335 Ma Steel 5220 60 60 10 Rebar Φ16-25mm HRB335 Tang Steel 5160 20 20 -40 Rebar Φ18-25mm HRB335 Liuzhou Steel 5180 20 20 -50 Rebar Φ18-25mm HRB335 Pinggang 5210 0 0-50 Rebar Φ18-25mm HRB335 Jianlong 5100 30 30 -60 Rebar Φ18-25mm HRB335 Shougang 5100 30 30 -60 Rebar Φ16-25mm HRB335 Xinfu 5110 20 40 -50 Rebar Φ16-25mm HRB335 Guangzhou Steel 5230 30 60 -20 Rebar Φ12mm HRB335 Handan Steel 5470 20 30 -60 Rebar Φ14mm HRB335 Handan Steel 5330 20 30 -40 Rebar Φ16mm HRB335 Handan Steel 5250 40 50 -70 Rebar Φ18-25mm HRB335 Handan Steel 5230 10 50 -30 Welded steel Φ16-25mm HRB335 Yufeng 5150 30 50 -70 Rebar Φ16-25mm HRB335 Cold steel 5210 10 10 -40 Rebar Φ16-25mm HRB335 Wanxin 5170 20 20 -60 III Rebar Φ12mm HRB400 Masteel 5480 30 30 0 Grade III rebar Φ14mm HRB400 Magang 5480 30 30 0 Grade III rebar Φ16-25mm HRB400 Masteel 5410 70 70 30 Grade III rebar Φ16-25mm HRB400 Grade 5220 60 60 -130 Grade III rebar Φ16-25mm HRB400 Guangzhou Steel 5500 50 50 -100 Grade III Rebar Φ18-25mm HRB400 Tang Steel 5380 40 40 0 ​​Grade III Rebar Φ18-Φ25mm HRB400 Ping Steel 5370 20 20 -10 Hot Roll 2.75mm*1250*C Q235 Tonggang 5630 0 80 -20 Hot rolled coil 2.75mm*1250*C Q235 Bead steel 5650 0 70 0 Hot rolled coil 2.75mm*1250*C Q235 Handan Steel 5650 0 70 0 Hot rolled coil 2.75mm*1250*C Q235 Tangsteel 5630 0 80 -20 Hot rolled coil 3.0mm*1250*C Q235 Angang/Shangang 5600 0 50 0 Hot rolled coil 3.0mm*1500*C Q235 Tangsteel 5550 0 50 -50 Hot rolled coil 4.75mm*1500*C Q235 Tangang Steel 5400 0 50 30 Hot rolled coil 4.75mm*1500*C Q235 Bengang 5400 0 50 30 Hot rolled coil 5.5mm*1500*C Q235 Tangsteel 5400 0 50 30 Hot rolled coil 5.75mm*1500*C Q235 Liugang 5400 0 50 30 Hot rolled coil 5.75mm*1500*C Q2 35 Angang/Benc 5400 0 50 30 Hot Roll 5.75mm*1500*C Q235 Ma Steel 5600 0 50 100 Hot Roll 7.5mm*1500*C Q235 Ben Steel 5400 0 50 30 Hot Roll 7.5mm*1500*C Q235 Tangsteel 5400 0 50 30 Hot rolled coil 11.5*1500*C Q235 Tangshan Steel 5400 0 50 30 Steel strip 183-232mm*2.5 DF01 Steel half 5080 0 40 0 ​​Strip steel 295-355mm*2.5 DF01 Ruifeng 5080 0 40 0 Strip 295-352mm*2.5 Q195L Tangshan Jianlong 5000 0 50 20 Strip 275mm*2.5 Q195L Gangue Steel 5090 0 30 10 Strip 240-255mm*2.5 Q195 Steel 4950 0 20 -30 Strip 255mm*2.5 Q235 Tianjin Rolling A 5050 0 40 40 Strip 352mm*2.75 Q235 Steel 5020 0 0 -30 Strip 434mm*3.0 Q235 Steel 5020 0 0 90 Strip 680-720mm*5.0 HG5 North Taiwan 5100 0 0 0 Strip 438-520mm*2.75 HG5 Industrial 5030 0 0 -20 Strip 680-735mm*5.0 HG5 Tingting 5000 0 0 0 Strip 505-700mm*2.75 HG5 Latitude 5250 0 0 -30 Cold rolled coil 1.0mm*1250*2500 SPCC Angang 6550 0 0 0 Cold rolled coil 1.2mm*1250*2500 ST12 Angang 6550 0 0 0 Cold rolled coil 2.0mm*1250*2500 ST12/DC01 Angang 6550 0 0 0 Cold rolled coil 3.0mm*1250*2500 ST12/DC01 Angang 6550 0 0 0 Cold rolled coil 1.0mm*1500*C SPCC Ben Steel 6480 0 30 -20 Cold rolled Volume 1.0*1250*2500 SPCC Wuhan Steel 6480 0 30 -20 Cold rolled coil 1.5mm*1250*2500 ST12 Wugang 6480 0 30 -20 Cold rolled coil 2.0mm*1250*2500 ST12 Wugang 6480 0 30 -20 Cold rolled sheet Volume 3.0mm*1250*2500 ST12 Wuhan Iron and Steel 6480 0 30 -20 Cold rolled coil 1.0mm*1250*c ST12 Kunming Steel 6400 0 0 -30 Cold rolled coil 1.0mm*1250*c ST12 Masteel 6400 0 0 -30 Cold-rolled coils 1.0mm*1250*c ST12 Handan 6340 0 40 10 Puzhong 6mm Q235B Xinyu 6640 0 90 90 Puzhong 8mm Q235A Handan Steel 6590 0 90 90 Puzhong 10mm Q235A Handan Steel 6290 0 90 90 Medium Plate 14-20mm Q235A Handan Steel 6120 0 90 90 Medium Plank 22-28mm Q235B Handan Steel 6120 0 90 90 Medium Plate 10mm Q235A Liuzhou Steel 6290 0 90 90 Medium Plate 12mm Q235A Liuzhou Steel 6170 0 90 90 Puzhong Plate 14-20mm Q235A Liuzhou Steel 6120 0 90 90 Puzhong Board 8mm Q235A Xinyu 6590 0 90 90 Puzhong Board 10mm Q235A Xinyu 6290 0 90 90 Puzhong Board 12mm Q235A Xinyu 6170 0 90 90 Puzhong Board 14-20mm Q235A Xinyu 6120 0 90 90 low-alloy steel plate 8mm Q345 silicon steel 6720 0 70 70 low alloy plate 10mm Q345 silicon steel 6470 0 70 70 low alloy plate 12mm Q345 silicon steel 6300 0 50 50 low alloy plate 20mm Q345 silicon steel 6300 0 70 70 boiler plate 6 Mm 20g Xinyu 6800 0 0 0 Boiler plate 8mm 20g Liujiang 6700 0 0 Boiler plate 10mm 20g Liuzhou Steel 6450 0 0 Boiler plate 12mm 20g Liujiang 6200 0 0 0 Boiler plate 14mm 20g Liujiang 6200 0 0 0 Boiler plate 20 -39mm 20g Liuzhou Steel 6500 0 0 0 Container Plate 8mm 16MnR Liu Steel 7030 0 0 200 Container Plate 10mm 16MnR Liu Steel 6850 0 0 200 Container Plate 12mm 16MnR Liuzhou Steel/Shougang 6750 0 0 200 Container Plate 14-20mm 16MnR Liu Gang/ Shougang 6700 0 0 200 Container Plate 22-30mm 16MnR Liuzhou Steel / Shougang 6750 0 0 200 Container Plate 8mm 16MnR Xinyu 7000 0 0 200 Container Plate 10mm 16MnR Xinyu 6800 0 0 200 Container Plate 12mm 16MnR Xinyu 6650 0 0 200 Container Plate 14- 20mm 16MnR Xinyu 6600 0 0 200 Seamless pipe Φ25*2.5 20# Wuxi 7600 0 0 300 Seamless pipe Φ38*3 20# Xinyu 6850 0 0 300 Seamless pipe Φ48*4 20# Xinyu 6850 0 0 300 Seamless pipe Φ57 *3.5 20# Xinyu 6800 0 0 300 Seamless pipe Φ60*4 20# Xinyu 6800 0 0 300 Seamless pipe Φ89*4.5 20# Guangxi 6750 0 0 250 Seamless pipe Φ108*4.5 20# Ansteel 6750 0 0 250 Seamless Tube Φ219*7 20# Steel 6700 0 0 150 Seamless Pipe Φ219*7 20# Steel 6650 0 0 150 I Beam 18#/a Q235 Sea Steel 5150 0 0 300 I Beam 25#/a Q235 Laiwu Steel 5200 0 0 100 I Beam 25#/b Q235 Wu Steel 5310 0 0 100 I Beam 25#/b Q235 Lai Steel 5210 0 0 100 I Beam 36#/b Q235 Lay Steel 5260 0 0 100 I Beam 40#/b Q235 Laiwu Steel 5280 0 0 100 Channel Steel 16#a Q235 Ma Steel 5300 0 0 100 Channel Steel 16#a Q235 Ma Steel 5200 0 0 270 Channel Steel 20# Q235 Ma Steel 5300 0 0 100 Channel Steel 16# a Q235 Ma Steel 5320 0 0 100 Channel 20# Q235 Ma Steel 5120 0 0 -200 Angle Steel 40*5mm Q235 Tong Steel 5500 0 0 170 Angle Steel 50*50*5mm Q235 Ma Steel 5500 0 0 170 Angle Steel 50*50*5mm Q235 Tong Steel 5400 0 0 100 Angle Steel 140*140*5mm Q235 Ma Steel 5400 0 0 100 Galvanized Roll 0.7mm*1000*C ST02Z Angang 6600 0 0 0 Galvanized Roll 1.0mm*1000*C ST02Z Ansteel 6450 0 0 50 Galvanized coil 0.7mm*1000*C ST02Z Benxi Steel 6580 0 0 0 Galvanized coil 1.0mm*1000*C ST02Z Bengang 6430 0 0 30 Galvanized coil 1.0mm*1000*C DC51D+Z Bengang 6430 0 0 30 Galvanized coil 1.0mm*1000*C DC51D+Z Masteel 6780 0 0 0 Color coated coil 0.326mm*1200*C SGCC Taiwan Shenghui 8400 0 0 0 Color coated coil 0.376mm*1000*C SGCC Taiwan Yonghui 8300 0 0 0 Color Coil 0.5mm*1000*C SGCC Baosteel 8400 0 0 0 Color Coil 0.426mm*1000*C CGCC Shunpu 8030 0 0 130 Color Coil 0.476mm*1 000*C CGCC Shunpu 7880 0 0 180