Part Number
    Please enter a valid full or partial manufacturer part number with a minimum of 3 letters or numbers

    BD621 Search Results

    BD621 Datasheets (34)

    Select Manufacturer
    Part ECAD Model Manufacturer Description Datasheet Type PDF PDF Size Page count
    BD621
    Philips Semiconductors PNP high-voltage transistor. Original PDF 49.23KB 8
    BD62105AFVM-TR
    ROHM Semiconductor BUILT-IN 1 CHANNEL H-BRIDGE MOTO Original PDF 1.32MB
    BD6210F
    ROHM H-bridge driver for DC brush motor Original PDF 263.15KB 5
    BD6210F
    ROHM H-bridge Driver Series for Brush Motors; Voltage resistance (V): 7; Output current (A): 0.5; CH: 1; Operating condition (V): 3 to 5.5; Input threshold voltage: 0.8; Output On resistance (O Typ.): 1; Output operation mode *: F/R/S/B; Package: SOP8; Mount size (mm2): 31; Original PDF 399.23KB 17
    BD6210F-E2
    ROHM IC H-BRIDGE DVR 7V 1CH .5A 8-SOP Original PDF 399.23KB 17
    BD6210F-E2
    ROHM PMIC - Motor, Bridge Drivers, Integrated Circuits (ICs), IC MOTOR DRIVER PAR 8SOP Original PDF 21
    BD6210HFP
    ROHM H-bridge Driver Series for Brush Motors; Voltage resistance (V): 7; Output current (A): 0.5; CH: 1; Operating condition (V): 3 to 5.5; Input threshold voltage: 0.8; Output On resistance (O Typ.): 1; Output operation mode *: F/R/S/B; Package: HRP7; Mount size (mm2): 99; Original PDF 399.23KB 17
    BD6210HFP-TR
    ROHM IC H-BRIDGE DVR 7V 1CH .5A HRP7 Original PDF 399.23KB 17
    BD6210HFP-TR
    ROHM PMIC - Motor, Bridge Drivers, Integrated Circuits (ICs), IC MOTOR DRIVER PAR HRP7 Original PDF 21
    BD62110AEFJ-E2
    Rohm Semiconductor Integrated Circuits (ICs) - PMIC - Motor Drivers, Controllers - 36V 1 CH DC BRUSH MOTOR DRIVERS Original PDF 917.14KB
    BD6211F
    ROHM H-bridge driver for DC brush motor Original PDF 261.51KB 5
    BD6211F
    ROHM H-bridge Driver Series for Brush Motors; Voltage resistance (V): 7; Output current (A): 1; CH: 1; Operating condition (V): 3 to 5.5; Input threshold voltage: 0.8; Output On resistance (O Typ.): 1; Output operation mode *: F/R/S/B; Package: SOP8; Mount size (mm2): 31; Original PDF 399.23KB 17
    BD6211F-E2
    ROHM IC H-BRIDGE DRIVER 1CH 1A SOP8 Original PDF 399.23KB 17
    BD6211F-E2
    ROHM PMIC - Motor, Bridge Drivers, Integrated Circuits (ICs), IC MOTOR DRIVER PAR 8SOP Original PDF 21
    BD6211HFP
    ROHM H-bridge driver for DC brush motor Original PDF 262.74KB 5
    BD6211HFP
    ROHM H-bridge Driver Series for Brush Motors; Voltage resistance (V): 7; Output current (A): 1; CH: 1; Operating condition (V): 3 to 5.5; Input threshold voltage: 0.8; Output On resistance (O Typ.): 1; Output operation mode *: F/R/S/B; Package: HRP7; Mount size (mm2): 99; Original PDF 399.23KB 17
    BD6211HFP-TR
    ROHM IC H-BRIDGE DVR 7V 1CH 1A HRP7 Original PDF 399.23KB 17
    BD6211HFP-TR
    ROHM PMIC - Motor, Bridge Drivers, Integrated Circuits (ICs), IC MOTOR DRIVER PAR HRP7 Original PDF 21
    BD62120AEFJ-E2
    ROHM Semiconductor BUILT-IN 1 CHANNEL H-BRIDGE MOTO Original PDF 1.26MB
    BD6212FP
    ROHM H-bridge Driver Series for Brush Motors; Voltage resistance (V): 7; Output current (A): 2; CH: 1; Operating condition (V): 3 to 5.5; Input threshold voltage: 0.8; Output On resistance (O Typ.): 0.5; Output operation mode *: F/R/S/B; Package: HSOP25; Mount size (mm2): 106; Original PDF 399.23KB 17
    SF Impression Pixel

    BD621 Price and Stock

    ROHM Semiconductor

    ROHM Semiconductor BD62105AFVM-TR

    IC: driver; H-bridge; PWM; MSOP8; 500mA; Iout max: 500mA
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    TME BD62105AFVM-TR 4,209 83
    • 1 -
    • 10 -
    • 100 $0.78
    • 1000 $0.64
    • 10000 $0.63
    Buy Now
    Arrow Electronics BD62105AFVM-TR Cut Strips 32 20 Weeks 1
    • 1 $1.38
    • 10 $1.06
    • 100 $0.86
    • 1000 $0.75
    • 10000 $0.67
    Buy Now
    Newark () BD62105AFVM-TR Cut Tape 1
    • 1 $1.56
    • 10 $1.14
    • 100 $0.92
    • 1000 $0.82
    • 10000 $0.79
    Buy Now
    BD62105AFVM-TR Tape & Reel 100
    • 1 -
    • 10 -
    • 100 $0.92
    • 1000 $0.82
    • 10000 $0.79
    Buy Now
    Quest Components BD62105AFVM-TR 3,367
    • 1 $2.22
    • 10 $2.22
    • 100 $2.22
    • 1000 $0.92
    • 10000 $0.83
    Buy Now
    Ameya Holding Limited BD62105AFVM-TR 3,000 1
    • 1 $1.89
    • 10 $1.61
    • 100 $1.27
    • 1000 $1.00
    • 10000 $0.85
    Buy Now

    ROHM Semiconductor BD62130AEFJ-E2

    IC: driver; PWM; SOIC8; 3A; 28V; Iout max: 3A; Usup: 8÷28V
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    TME BD62130AEFJ-E2 2,528 27
    • 1 -
    • 10 -
    • 100 $1.47
    • 1000 $1.25
    • 10000 $1.25
    Buy Now
    Arrow Electronics BD62130AEFJ-E2 Cut Strips 75 20 Weeks 1
    • 1 $1.57
    • 10 $1.20
    • 100 $0.98
    • 1000 $0.85
    • 10000 $0.80
    Buy Now
    Newark () BD62130AEFJ-E2 Cut Tape 3,730 1
    • 1 $1.80
    • 10 $1.32
    • 100 $1.07
    • 1000 $0.96
    • 10000 $0.93
    Buy Now
    BD62130AEFJ-E2 Tape & Reel 3,730 100
    • 1 -
    • 10 -
    • 100 $1.07
    • 1000 $0.96
    • 10000 $0.93
    Buy Now
    Ameya Holding Limited BD62130AEFJ-E2 5,946 1
    • 1 $3.06
    • 10 $2.61
    • 100 $2.05
    • 1000 $1.63
    • 10000 $1.38
    Buy Now
    Avnet Asia BD62130AEFJ-E2 24 Weeks 2,500
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Get Quote
    Avnet Silica BD62130AEFJ-E2 16 Weeks 2,500
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Get Quote
    Vyrian BD62130AEFJ-E2 15,997
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Get Quote
    Win Source Electronics BD62130AEFJ-E2 5,000
    • 1 -
    • 10 -
    • 100 $1.13
    • 1000 $0.75
    • 10000 $0.75
    Buy Now

    ROHM Semiconductor BD62120AEFJ-E2

    IC: driver; PWM; 2A; Iout max: 2A; 8÷36V; 3.75W
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    TME BD62120AEFJ-E2 2,500 90
    • 1 -
    • 10 -
    • 100 $0.94
    • 1000 $0.85
    • 10000 $0.85
    Buy Now
    Arrow Electronics BD62120AEFJ-E2 Cut Strips 88 20 Weeks 1
    • 1 $1.99
    • 10 $1.55
    • 100 $1.31
    • 1000 $1.17
    • 10000 $1.04
    Buy Now
    Bristol Electronics BD62120AEFJ-E2 1,720 1
    • 1 $2.22
    • 10 $1.66
    • 100 $1.37
    • 1000 $0.73
    • 10000 $0.73
    Buy Now
    Quest Components () BD62120AEFJ-E2 1,376
    • 1 $3.55
    • 10 $3.55
    • 100 $3.55
    • 1000 $1.33
    • 10000 $1.33
    Buy Now
    BD62120AEFJ-E2 1,376
    • 1 $2.95
    • 10 $2.95
    • 100 $2.95
    • 1000 $0.92
    • 10000 $0.81
    Buy Now
    BD62120AEFJ-E2 977
    • 1 $3.38
    • 10 $3.38
    • 100 $3.38
    • 1000 $1.86
    • 10000 $1.86
    Buy Now
    Ameya Holding Limited BD62120AEFJ-E2 5,250 1
    • 1 $2.55
    • 10 $2.17
    • 100 $1.71
    • 1000 $1.35
    • 10000 $1.15
    Buy Now
    Avnet Asia BD62120AEFJ-E2 24 Weeks 2,500
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Get Quote

    ROHM Semiconductor BD62120JEFJ-E2

    IC: driver; PWM; 2A; Iout max: 2A
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    TME BD62120JEFJ-E2 2,283 44
    • 1 -
    • 10 -
    • 100 $1.08
    • 1000 $0.91
    • 10000 $0.91
    Buy Now
    Arrow Electronics BD62120JEFJ-E2 Cut Strips 400 9 Weeks 1
    • 1 $1.72
    • 10 $1.33
    • 100 $1.13
    • 1000 $0.93
    • 10000 $0.93
    Buy Now
    Quest Components BD62120JEFJ-E2 1,826
    • 1 $3.15
    • 10 $3.15
    • 100 $3.15
    • 1000 $1.18
    • 10000 $1.18
    Buy Now
    Ameya Holding Limited BD62120JEFJ-E2 250 1
    • 1 $2.55
    • 10 $2.17
    • 100 $1.71
    • 1000 $1.35
    • 10000 $1.15
    Buy Now

    ROHM Semiconductor BD6210F-E2

    IC: driver; MOSFET; SOP8; 500mA; Iout max: 500mA; 3÷5.5V; 680mW
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    TME BD6210F-E2 1,834 34
    • 1 -
    • 10 -
    • 100 $1.15
    • 1000 $0.97
    • 10000 $0.97
    Buy Now
    Verical () BD6210F-E2 1,600 48
    • 1 -
    • 10 -
    • 100 $1.35
    • 1000 $1.28
    • 10000 $1.28
    Buy Now
    BD6210F-E2 234 48
    • 1 -
    • 10 -
    • 100 $1.47
    • 1000 $1.47
    • 10000 $1.47
    Buy Now
    BD6210F-E2 160 40
    • 1 -
    • 10 -
    • 100 $1.58
    • 1000 $1.58
    • 10000 $1.58
    Buy Now
    BD6210F-E2 90 51
    • 1 -
    • 10 -
    • 100 $1.66
    • 1000 $1.66
    • 10000 $1.66
    Buy Now
    BD6210F-E2 48 2
    • 1 -
    • 10 $1.58
    • 100 $1.31
    • 1000 $1.07
    • 10000 $1.07
    Buy Now
    Arrow Electronics BD6210F-E2 Cut Strips 48 26 Weeks 1
    • 1 $2.04
    • 10 $1.58
    • 100 $1.31
    • 1000 $1.07
    • 10000 $1.07
    Buy Now
    Quest Components () BD6210F-E2 1,467
    • 1 $3.10
    • 10 $3.10
    • 100 $3.10
    • 1000 $1.71
    • 10000 $1.55
    Buy Now
    BD6210F-E2 133
    • 1 $1.89
    • 10 $1.89
    • 100 $1.14
    • 1000 $1.02
    • 10000 $1.02
    Buy Now
    Ameya Holding Limited BD6210F-E2 107 1
    • 1 $1.58
    • 10 $1.48
    • 100 $1.38
    • 1000 $1.09
    • 10000 $0.99
    Buy Now
    Component Electronics, Inc BD6210F-E2 104
    • 1 $2.31
    • 10 $2.31
    • 100 $1.73
    • 1000 $1.50
    • 10000 $1.50
    Buy Now
    Win Source Electronics BD6210F-E2 30,000
    • 1 -
    • 10 -
    • 100 $0.69
    • 1000 $0.46
    • 10000 $0.46
    Buy Now

    BD621 Datasheets Context Search

    Catalog Datasheet Type Document Tags PDF

    HSOP-M28

    Abstract: BD6216FM BD6222 BD6232 24GND
    Contextual Info: For brush motors H-bridge drivers 7V max. BD6210, BD6211, BD6212, BD6215, BD6216, BD6217 No.09007ECT01  Overview These H-bridge drivers are full bridge drivers for brush motor applications. Each IC can operate at a wide range of power supply voltages (from 3V to 36V), supporting output currents of up to 2A. MOS transistors in the output stage allow for


    Original
    bd6210bd6211bd6212bd6215+9bd6216bd621709007ect01r0039ahsop-m28bd6216fmbd6222bd623224gnd PDF

    bd622d

    Abstract: BD623d RPI-441C1E BD6221F BA6287 BD6387 BD6222 BD6222HFP BD6230F bd62
    Contextual Info: Power Products Energy-saving PWM drivers H-bridge Drivers for DC Brush Motors ÎPWM BD621 □ / BD622D / BD623D series ROHM's easy-to-use high efficiency H-bridge drivers for DC brush motors enable speed control while driving by performing switching lïïik v


    OCR Scan
    bd621bd622dbd623dpmr03+14pmr10pmr18pmr25pmr50pmr100-rpi-246erpi-441c1ebd6221fba6287bd6387bd6222bd6222hfpbd6230fbd62 PDF

    basic motor reverse forward electrical diagram BD

    Abstract: BD6220F
    Contextual Info: H-bridge Drivers for Brush Motors 18V max. H-bridge Drivers BD621X Series No.11007EET02 ●Description These H-bridge drivers are full bridge drivers for brush motor applications. Each IC can operate at a range of power supply voltages from 6V to 15V , supporting output currents of up to 2A. MOS transistors in the output stage allow for PWM signal


    Original
    bd621x11007eet0220khz100khz+3r1120abasic motor reverse forward electrical diagram bdbd6220f PDF

    Contextual Info: BD6225FP H-bridge Drivers for Brush Motors 18V max. H-bridge Drivers BD621X Series No.11007EET02 ●Description These H-bridge drivers are full bridge drivers for brush motor applications. Each IC can operate at a range of power supply voltages from 6V to 15V , supporting output currents of up to 2A. MOS transistors in the output stage allow for PWM signal


    Original
    bd6225fpbd621x11007eet0220khz+2100khzr1120a PDF

    Contextual Info: Datasheet DC Brush Motor Drivers 7V max. BD621xxx Series ●General Description These H-bridge drivers are full bridge drivers for brush motor applications. Each IC can operate at a power supply voltage range of 3.0V to 5.5V, with output currents of up to 2A. MOS transistors in the output stage


    Original
    bd621xxx PDF

    BD6222

    Contextual Info: H-bridge Drivers for Brush Motors 7V Max. H-bridge Drivers BD621X Series No.11007EDT01 ●Description These H-bridge drivers are full bridge drivers for brush motor applications. Each IC can operate at a range of power supply voltages from 3.0V to 5.5V , supporting output currents of up to 2A. MOS transistors in the output stage allow for PWM


    Original
    bd621x11007edt0120khz100khz+2r1120abd6222 PDF

    BD6222

    Contextual Info: BD6220F H-bridge Drivers for Brush Motors 18V max. H-bridge Drivers BD621X Series No.11007EET02 ●Description These H-bridge drivers are full bridge drivers for brush motor applications. Each IC can operate at a range of power supply voltages from 6V to 15V , supporting output currents of up to 2A. MOS transistors in the output stage allow for PWM signal


    Original
    bd6220fbd621x11007eet0220khz+3100khzr1120abd6222 PDF

    BD6222

    Abstract: BD6210HFP BD621X
    Contextual Info: BD6210F H-bridge Drivers for Brush Motors 7V Max. H-bridge Drivers BD621X Series No.11007EDT01 ●Description These H-bridge drivers are full bridge drivers for brush motor applications. Each IC can operate at a range of power supply voltages from 3.0V to 5.5V , supporting output currents of up to 2A. MOS transistors in the output stage allow for PWM


    Original
    bd6210fbd621x11007edt0120khz+4100khzr1120abd6222bd6210hfp PDF

    Transistors Diodes 2011

    Contextual Info: BD6211F H-bridge Drivers for Brush Motors 7V Max. H-bridge Drivers BD621X Series No.11007EDT01 ●Description These H-bridge drivers are full bridge drivers for brush motor applications. Each IC can operate at a range of power supply voltages from 3.0V to 5.5V , supporting output currents of up to 2A. MOS transistors in the output stage allow for PWM


    Original
    bd6211fbd621x11007edt0120khz+3100khzr1120atransistors diodes 2011 PDF

    Contextual Info: BD6221F H-bridge Drivers for Brush Motors 18V max. H-bridge Drivers BD621X Series No.11007EET02 ●Description These H-bridge drivers are full bridge drivers for brush motor applications. Each IC can operate at a range of power supply voltages from 6V to 15V , supporting output currents of up to 2A. MOS transistors in the output stage allow for PWM signal


    Original
    bd6221fbd621x11007eet0220khz+2100khzr1120a PDF

    Contextual Info: Datasheet DC Brush Motor Drivers 7V Max BD621xxx Series General Description Key Specifications • ■ ■ ■ ■ ■ These H-bridge drivers are full bridge drivers for brush motor applications. Each IC can operate at a power supply voltage range of 3.0V to 5.5V, with output currents


    Original
    bd621xxx PDF

    Transistors Diodes 2011

    Contextual Info: BD6212HFP H-bridge Drivers for Brush Motors 7V Max. H-bridge Drivers BD621X Series No.11007EDT01 ●Description These H-bridge drivers are full bridge drivers for brush motor applications. Each IC can operate at a range of power supply voltages from 3.0V to 5.5V , supporting output currents of up to 2A. MOS transistors in the output stage allow for PWM


    Original
    bd6212hfpbd621x11007edt0120khz+3100khzr1120atransistors diodes 2011 PDF

    Contextual Info: For brush motors H-bridge drivers 7V max. BD6210, BD6211, BD6212, BD6215, BD6216, BD6217 No.09007EBT01  Overview These H-bridge drivers are full bridge drivers for brush motor applications. Each IC can operate at a wide range of power supply voltages (from 3V to 36V), supporting output currents of up to 2A. MOS transistors in the output stage allow for


    Original
    bd6210bd6211bd6212bd6215+6bd6216bd621709007ebt0120khz100khzr0039a PDF

    FR4 epoxy glass 1.6mm substrate

    Abstract: BD6231 SSOP-B24 BD6222 BD6232 BD6211F FR4 substrate 1.6mm
    Contextual Info: TECHNICAL NOTE For brush motors H-bridge drivers 7V max. BD6210, BD6211, BD6212, BD6215, BD6216, BD6217 zOverview These H-bridge drivers are full bridge drivers for brush motor applications. Each IC can operate at a wide range of power-supply voltages (from 3V to 36V), supporting output currents of up to 2A. MOS transistors in the output stage allow


    Original
    bd6210bd6211bd6212bd6215+10bd6216bd621720khzfr4 epoxy glass 1.6mm substratebd6231ssop-b24bd6222bd6232bd6211ffr4 substrate 1.6mm PDF

    Contextual Info: ROHM Motor Driver IC Solutions Evaluation Board: H-Bridge Motor Drivers For DC Brush Motors No.0000000012 BD6212FP, BD6222FP, BD6232FP 2A / 5.5V, 15V, 32V ●Introduction This application note will provide the steps necessary to operate and evaluate ROHM’s H-Bridge motor drivers using the BD62x2 evaluation


    Original
    bd6212fpbd6222fpbd6232fpbd62x2+1bd62x2fp PDF

    Contextual Info: Datasheet DC Brush Motor Drivers 7V max. BD621xxx Series ●General Description These H-bridge drivers are full bridge drivers for brush motor applications. Each IC can operate at a power supply voltage range of 3.0V to 5.5V, with output currents of up to 2A. MOS transistors in the output stage


    Original
    bd621xxxhsop25 PDF

    Transistors Diodes 2011

    Contextual Info: BD6211HFP H-bridge Drivers for Brush Motors 7V Max. H-bridge Drivers BD621X Series No.11007EDT01 ●Description These H-bridge drivers are full bridge drivers for brush motor applications. Each IC can operate at a range of power supply voltages from 3.0V to 5.5V , supporting output currents of up to 2A. MOS transistors in the output stage allow for PWM


    Original
    bd6211hfpbd621x11007edt0120khz+3100khzr1120atransistors diodes 2011 PDF

    Contextual Info: BD6222HFP H-bridge Drivers for Brush Motors 18V max. H-bridge Drivers BD621X Series No.11007EET02 ●Description These H-bridge drivers are full bridge drivers for brush motor applications. Each IC can operate at a range of power supply voltages from 6V to 15V , supporting output currents of up to 2A. MOS transistors in the output stage allow for PWM signal


    Original
    bd6222hfpbd621x11007eet0220khz+2100khzr1120a PDF

    Contextual Info: BD6212FP H-bridge Drivers for Brush Motors 7V Max. H-bridge Drivers BD621X Series No.11007EDT01 ●Description These H-bridge drivers are full bridge drivers for brush motor applications. Each IC can operate at a range of power supply voltages from 3.0V to 5.5V , supporting output currents of up to 2A. MOS transistors in the output stage allow for PWM


    Original
    bd6212fpbd621x11007edt0120khz+2100khzr1120a PDF

    Contextual Info: BD6222FP H-bridge Drivers for Brush Motors 18V max. H-bridge Drivers BD621X Series No.11007EET02 ●Description These H-bridge drivers are full bridge drivers for brush motor applications. Each IC can operate at a range of power supply voltages from 6V to 15V , supporting output currents of up to 2A. MOS transistors in the output stage allow for PWM signal


    Original
    bd6222fpbd621x11007eet0220khz+2100khzr1120a PDF

    BD621X

    Abstract: BD6210F-E2 BD6211 BD6210F 2OUT16 BD6211F BD6211FE2
    Contextual Info: DC Brush Motor Drivers 7V max. BD621x Series ●General Description These H-bridge drivers are full bridge drivers for brush motor applications. Each IC can operate at a range of power supply voltages (from 3.0V to 5.5V), supporting output currents of up to 2A. MOS transistors in the


    Original
    bd621xbd6210f-e2bd6211bd6210f+32out16bd6211fbd6211fe2 PDF

    Contextual Info: BD6226FP H-bridge Drivers for Brush Motors 18V max. H-bridge Drivers BD621X Series No.11007EET02 ●Description These H-bridge drivers are full bridge drivers for brush motor applications. Each IC can operate at a range of power supply voltages from 6V to 15V , supporting output currents of up to 2A. MOS transistors in the output stage allow for PWM signal


    Original
    bd6226fpbd621x11007eet0220khz+2100khzr1120a PDF

    BD6212FP

    Abstract: HSOP25
    Contextual Info: no H m 1/3 STRUCTURE Silicon monolithic integrated circuit PRODUCT SERIES H-bridge driver for DC brush motor TYPE BD6212FP FEATURES • Voltage setting pin enables for PWM duty control • Supports PWM control signal input O ABSOLUTE MAXIMUM RATINGS Ta=25°C


    OCR Scan
    bd6212fphsop25 PDF

    Contextual Info: TECHNICAL NOTE For brush motors H-bridge drivers 7V max. BD6210, BD6211, BD6212, BD6215, BD6216, BD6217 zOverview These H-bridge drivers are full bridge drivers for brush motor applications. Each IC can operate at a wide range of power-supply voltages (from 3V to 36V), supporting output currents of up to 2A. MOS transistors in the output stage allow


    Original
    bd6210bd6211bd6212bd6215+4bd6216bd621720khz100khzent PDF