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

    3GT30 Search Results

    SF Impression Pixel

    3GT30 Price and Stock

    JRH Electronics EW-14-13-G-T-300

    CONN HDR 42POS 0.1 STACK T/H
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey EW-14-13-G-T-300 Bulk 1
    • 1 $14.02
    • 10 $12.964
    • 100 $9.2
    • 1000 $9.2
    • 10000 $9.2
    		Buy Now

    Samtec Inc EW-14-13-G-T-300

    CONN HDR 42POS 0.1 STACK T/H
    Free Sample
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey EW-14-13-G-T-300 Bulk 1
    • 1 $10.35
    • 10 $10.35
    • 100 $10.35
    • 1000 $10.35
    • 10000 $10.35
    		Buy Now
    Avnet Americas EW-14-13-G-T-300 Bulk 1
    • 1 $7.71
    • 10 $7.13
    • 100 $5.06
    • 1000 $5.06
    • 10000 $5.06
    		Buy Now
    Mouser Electronics EW-14-13-G-T-300
    • 1 $7.71
    • 10 $7.13
    • 100 $5.06
    • 1000 $3.63
    • 10000 $2.67
    		Get Quote
    Sager EW-14-13-G-T-300 147 1
    • 1 $7.71
    • 10 $7.13
    • 100 $5.06
    • 1000 $4.58
    • 10000 $4.58
    		Buy Now

    Samtec Inc TW-28-03-G-T-300-100

    CONN BRD STACK 2.00 84POS
    Free Sample
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey TW-28-03-G-T-300-100 Bulk 1
    • 1 $14.76
    • 10 $14.76
    • 100 $14.76
    • 1000 $14.76
    • 10000 $14.76
    		Buy Now
    Avnet Americas TW-28-03-G-T-300-100 Bulk 1
    • 1 $12.84
    • 10 $12.57
    • 100 $9.69
    • 1000 $9.69
    • 10000 $9.69
    		Buy Now
    Mouser Electronics TW-28-03-G-T-300-100
    • 1 $12.84
    • 10 $12.57
    • 100 $9.69
    • 1000 $4.36
    • 10000 $4.36
    		Get Quote
    Newark TW-28-03-G-T-300-100 Bulk 1
    • 1 $15.63
    • 10 $14.47
    • 100 $11.13
    • 1000 $10.18
    • 10000 $10.18
    		Buy Now
    Master Electronics TW-28-03-G-T-300-100
    • 1 -
    • 10 $16.86
    • 100 $10.64
    • 1000 $4.57
    • 10000 $4.57
    		Buy Now
    Sager TW-28-03-G-T-300-100 53 1
    • 1 $12.84
    • 10 $12.57
    • 100 $9.69
    • 1000 $7.81
    • 10000 $7.81
    		Buy Now

    JRH Electronics TW-28-03-G-T-300-100

    STACKING BOARD CONNECTOR, TW SER
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey TW-28-03-G-T-300-100 Bulk 1
    • 1 $26.84
    • 10 $26.84
    • 100 $26.84
    • 1000 $26.84
    • 10000 $26.84
    		Buy Now

    Samtec Inc TW-18-03-G-T-300-085

    CONN BRD STACK 2.00 54POS
    Free Sample
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey TW-18-03-G-T-300-085 Bulk 1
    • 1 $10.02
    • 10 $10.02
    • 100 $10.02
    • 1000 $10.02
    • 10000 $10.02
    		Buy Now
    Avnet Americas TW-18-03-G-T-300-085 Bulk 1
    • 1 $8.71
    • 10 $8.33
    • 100 $6.23
    • 1000 $6.23
    • 10000 $6.23
    		Buy Now
    Mouser Electronics TW-18-03-G-T-300-085
    • 1 $8.71
    • 10 $8.33
    • 100 $6.23
    • 1000 $3.65
    • 10000 $2.81
    		Get Quote
    Sager TW-18-03-G-T-300-085 1
    • 1 $8.71
    • 10 $8.33
    • 100 $6.23
    • 1000 $5.02
    • 10000 $5.02
    		Buy Now
    Find more 3GT30 price and stock on Findchips.com

    3GT30 Datasheets Context Search

    Catalog Datasheet MFG & Type PDF Document Tags

    Assembly instruction 57 A

    Abstract: smb14 SMC1421A1-3GT30G-5-50 SMC1421G1-NT30G-5-50 1a50 SMB1421A1-NT30G-14-50
    Text: Right Angle Solder Plug - Semi-Rigid Cable P.N. SMB6182A1-NT30G-11-50 SMB6182A1-3GT30G-11-50 SMB6182A1-3GT30G-13-50 Cable Group Plt. Ins. Imp. Crimp Tool 11 11 13 Nickel Gold Gold Teflon Teflon Teflon 50 50 50 N/A N/A N/A SMB6182A1-NT30G-11-50, SMB6182A1-3GT30G-11-50


    Original     		PDF SMB6182A1-NT30G-11-50 SMB6182A1-3GT30G-11-50 SMB6182A1-3GT30G-13-50 SMB6182A1-NT30G-11-50, SMB1421A1-002-NT30G-5-50 SMB1421A1-NT30G-3-50 SMB1421A1-3GT30G-5-50 SMZ1421G6-3GT30G-6-75 Assembly instruction 57 A smb14 SMC1421A1-3GT30G-5-50 SMC1421G1-NT30G-5-50 1a50 SMB1421A1-NT30G-14-50

    SMC 50

    Abstract: SMC1251B1-NT30G-50 SMB1251B1-3GT30G-50 SMB1251B1-NT30G-50 SMB6251B1-3GT30G-50 SMB6251B1-NT30G-50 SMC1251B1-3GT30G-50 SMC6251B1-3GT30G-50 SMC6251B1-NT30G-50 SMS1251B1-3GT30G-50
    Text: SMB/SMC/SMZ Coaxial Connectors Printed Circuit Board Connectors Straight Plug for P.C. Board Cable Group Plt. Ins. Imp. Crimp Tool SMB6251B1-NT30G-50 SMB6251B1-3GT30G-50 N/A N/A Nickel Gold Teflon Teflon 50 50 N/A N/A SMC Connectors SMC6251B1-NT30G-50 SMC6251B1-3GT30G-50


    Original     		PDF SMB6251B1-NT30G-50 SMB6251B1-3GT30G-50 SMC6251B1-NT30G-50 SMC6251B1-3GT30G-50 SMB1251B1-NT30G-50 SMB1251B1-3GT30G-50 SMS1251B1-3GT30G-50 SMZ1251B6-002-3GT30G-75 SMC 50 SMC1251B1-NT30G-50 SMB1251B1-3GT30G-50 SMB1251B1-NT30G-50 SMB6251B1-3GT30G-50 SMB6251B1-NT30G-50 SMC1251B1-3GT30G-50 SMC6251B1-3GT30G-50 SMC6251B1-NT30G-50 SMS1251B1-3GT30G-50

    SMC 50

    Abstract: SMC1251B1-3GT30G-50 sck 123 ntc SMB1251B1-3GT30G-50 SMB1251B1-NT30G-50 SMB6251B1-3GT30G-50 SMB6251B1-NT30G-50 SMC1251B1-NT30G-50 SMC6251B1-3GT30G-50 SMC6251B1-NT30G-50
    Text: SMB/SMC/SMZ Coaxial Connectors Printed Circuit Board Connectors Straight Plug for P.C. Board Cable Group Plt. Ins. Imp. Crimp Tool SMB6251B1-NT30G-50 SMB6251B1-3GT30G-50 N/A N/A Nickel Gold Teflon Teflon 50 50 N/A N/A SMC Connectors SMC6251B1-NT30G-50 SMC6251B1-3GT30G-50


    Original     		PDF SMB6251B1-NT30G-50 SMB6251B1-3GT30G-50 SMC6251B1-NT30G-50 SMC6251B1-3GT30G-50 SMB1251B1-NT30G-50 SMB1251B1-3GT30G-50 SMS1251B1-3GT30G-50 SMZ1251B6-002-3GT30G-75 SMC 50 SMC1251B1-3GT30G-50 sck 123 ntc SMB1251B1-3GT30G-50 SMB1251B1-NT30G-50 SMB6251B1-3GT30G-50 SMB6251B1-NT30G-50 SMC1251B1-NT30G-50 SMC6251B1-3GT30G-50 SMC6251B1-NT30G-50

    SMB6112A1

    Abstract: SMB1121A1-3GT30G-5-50 SMB6112D1-3GT30G-5-50 SMC1121G1-3GT30G-5-50 SMC1121G1-NT30G-5-50 female amphenol connectors 5A50 SMB6112A1-3GT30G-5A-50 SMB6112A1-NT30G-14-50 3GT30G-5-50
    Text: SMB/SMC/SMZ Coaxial Connectors Crimp Attachment for Flexible Cable and Direct Solder for Semi-Rigid Cable Straight Crimp Jack - Flexible Cable Cable Group Plt. Ins. Imp. Crimp Tool SMB1121A1-NT30G-5-50 SMZ1121A6-NT30G-6-75 SMB1121A1-3GT30G-5-50 SMZ1121A6-3GT30G-6-75


    Original     		PDF SMB1121A1-NT30G-5-50 SMZ1121A6-NT30G-6-75 SMB1121A1-3GT30G-5-50 SMZ1121A6-3GT30G-6-75 SMB1121A1-NT30G-5A-50 SMB1121A1-3GT30G-5A-50 SMB1121A1-NT30G-14-50 SMB1121A1-3GT30G-14-50 SMZ1121A6-3GT30G-19-75 SMC1121G1-NT30G-5-50 SMB6112A1 SMB1121A1-3GT30G-5-50 SMB6112D1-3GT30G-5-50 SMC1121G1-3GT30G-5-50 SMC1121G1-NT30G-5-50 female amphenol connectors 5A50 SMB6112A1-3GT30G-5A-50 SMB6112A1-NT30G-14-50 3GT30G-5-50

    SMB1252B1-3GT30G-50

    Abstract: SMB6252B1-NT30G-50 smb14 SMC6252B1-3GT30G-50 SMB1451B1-004-NT30G-50
    Text: SMB/SMC/SMZ Coaxial Connectors Printed circuit Board Connectors Straight Bulkhead Jack for P.C. Board Cable Group Plt. Ins. Imp. Crimp Tool SMB1451B1-004-NT30G-50 Slide-On N/A Nickel Teflon 50 N/A SMB1451B1-003-NT30G-50 SMB1451B1-003-3GT30G-50 N/A N/A Nickel


    Original     		PDF SMB1451B1-004-NT30G-50 SMB1451B1-003-NT30G-50 SMB1451B1-003-3GT30G-50 SMB6252B1-NT30G-50 SMB6252B1-3GT30G-50 SMZ6252B1-3GT30G-75 SMC6252B1-NT30G-50 SMC6252B1-3GT30G SMC6252B1-3GT30G-50 SMB1252B1-3GT30G-50 SMB6252B1-NT30G-50 smb14 SMC6252B1-3GT30G-50 SMB1451B1-004-NT30G-50

    Teflon

    Abstract: SMZ6121A6-3GT30G-6-75 SMB6121A1-NT30G-5A-50 3GT30 SMB6121A1-3GT30G-14-50 SMC 50 SMZ6121A6-002-N/3GT30G-6-75 SMC6121A1-NT30G-5-50 SMB6121A1-003-3GT30G-5-5A-50 SMB6121A1-003-NT30G-5-50
    Text: SMB/SMC/SMZ Coaxial Connectors SMB/SMC/SMZ Coaxial Connectors All bodies, unless otherwise noted, are machined brass, gold-plated 3µ”. All insulators are Teflon. All center contacts are 30µ” gold plated. All dimensions in millimeters and [inches]. Plug Crimp Attachment for Flexible Cable and Direct Solder for Semi-Rigid Cable


    Original     		PDF SMB6121A2-NT30G-1-50 SMB6121A2-3GT30G-1-50 SMB6121A2-NT30G-1A-50 SMB6121A2-3GT30G-1A-50 SMB6121A1-003-NT30G-5-50 SMZ6121A6-002-N/3GT30G-6-75 SMB6121A1-003-3GT30G-5-5A-50 SMZ6121A6-3GT30G-6-75 SMB6121A1-NT30G-5A-50 SMB6121A1-3GT30G-5A-50 Teflon SMZ6121A6-3GT30G-6-75 SMB6121A1-NT30G-5A-50 3GT30 SMB6121A1-3GT30G-14-50 SMC 50 SMC6121A1-NT30G-5-50

    Untitled

    Abstract: No abstract text available
    Text: 1 I 2 I 3 I 4 I I 5 I 6 7 I 8 R E V IS IO NS IS5 D E S C R I P T IO N ^ ER ZO NE R E Q U E S T \D A T E F E C PCB M O UNTING HO LE N O TE S: F IN IS H P L A T IN G T H IC K N E S S M IC R O -IN C H E S 1. B R A S S P E R Q Q - B - 6 2 6 2 . G O LD P L. 3 M IN . TH IC K OVER N IC K E L P L. 1 0 0 M IN. T H IC K


    OCR Scan     		PDF X6252N 3GT30

    Untitled

    Abstract: No abstract text available
    Text: 2 4 6 5 7 R E V I5I0 N S ISS ZONE DE5CRIPTIQN\ PER REQUEST\DATE F F E F D D C C PCB MOUNTING HOLE NOTES: FINISH P^\TING TH IC KN ESS IN M IC R O - IN C H ES 1. BRASS PER Q Q - B - 6 2 6 2. GOLD PL, 3 MIN. THIC K OVER N IC KEL PL, 1 0 0 MIN. THICK OVER C O PPER S TR IKE


    OCR Scan     		PDF G--50 B7700-3-A -3GT30G

    Untitled

    Abstract: No abstract text available
    Text: 1 I 2 I 3 I 4 I 5 I 6 I 7 I 8 REVISIONS ISS ZONE DESCRIPTION\PER REQUEST\DATE PCB NOTES: FINISH (PLATING THICKNESS IN M ICRO -INC HE5 1. BRASS PER Q Q - B - 6 2 6 2. GOLD P L 3 MIN. THICK OVER N ICKEL PL. 100 MIN. THICK OVER COPPER STRIKE 3. GOLD P L 3 0 MIN. THICK OVER N ICKEL PL, 100 MIN, THICK


    OCR Scan     		PDF 12ABG 251A4\5D\3GT30G AAE44GE5F

    Untitled

    Abstract: No abstract text available
    Text: THIRD AN G LE PROJ. NOTES: 1. MATERIALS AND FINISHES BODY - BRASS, GOLD PLATING CONTACT - BERYLLIUM COPPER, GOLD PLATING 5. ELECTRICAL: A. IMPEDANCE: 50 OHM B. FREQUENCY RANGE: DC 0 - 4 GHz C. DIELECTRIC WITHSTANDING VOLTAGE: MECHANICAL: A. DURABILITY: 500 CYCLES MIN.


    OCR Scan     		PDF 0g-0ct-02 03-Aug- OB-Aug-03 RG-174/U 18BA/U, 316/U) SSMB6121A1-3GT3QG-316U-50 ug-03 156121AAA36GE5F 904-11OP-51SX

    Untitled

    Abstract: No abstract text available
    Text: 8 REVISIONS ISS ZONE DESCRIPTION\PER REQUEST\DATE E E 1. CRIMPED FERRULE HEX CRIMP SIZE .1 5 1 ” 2. CONTACT PIN TO SOLDER D D NOTES: FINISH PLATING THICKNESS IN M IC R O -IN C HES 1. BRASS PER Q Q - B - 6 2 6 2. GOLD PL. 3 MIN. THICK OVER NICKEL PL. 1 0 0 MIN. THICK


    OCR Scan     		PDF B5090â BD12AAF02A B5000â SMB6112A1 3GT30Gâ 126112ABPA1GE5F

    Untitled

    Abstract: No abstract text available
    Text: 4 7 REVISIONS I5S ZONE DE5CRllPTI0 N\ PER REO UEST/D ATE - o .5- 2.2 • =- 8.C-*- F F RECOMMENDED CABLE STRIPPING DIM'S E E D D NOTES: 1. 2. 3. 4. C 5. 6. 7. 8. 12 FINISH (PLATING TH IC KN ESS IN M IC RO - IN C H ES BRASS PER 0 0 - B - 6 2 6 BRASS PER Q Q - B - 6 1 3


    OCR Scan     		PDF 5M061 B50D3-8-75 KJ-SMB61 3GT30G

    Untitled

    Abstract: No abstract text available
    Text: 4 7 REVISIONS ISS ZONE d e s c r ip t io n K p e p p e q u e s t \d a te REMARK: 5 5 . 1-»j - H T T - T U S h -8 . 3 - H 7 LO RECOMMENDED CABLE STRIPPING DIM’S NO.2 MUST WITHSTAND A 4 lbs. MIN. PUSHOUT FORCE FROM NO.1 ARTER STAKING OPERATION REMARK 1 IS MAINTAINED BV STAMPING THE


    OCR Scan     		PDF -32UNIF-2A 412A1 3GT30G

    Untitled

    Abstract: No abstract text available
    Text: NOTES: 1. MATERIALS AND FINISHES PLATING THICKNESS IN MICRO-INCHES : BODY - BERYLLIUM COPPER , GOLD PLATING CONTACT - BERYLLIUM COPPER , GOLD PLATING INSULATOR - TEFLON 2. ELECTRICAL: A. IMPEDANCE: 50 OHM B. FREQUENCY RANGE: DC 0 - 6 GHz C. VSWR(RETURN LOSS): 1.3 MAX.


    OCR Scan     		PDF 919-N 109J-51P 10RECOMMENDED MCX6251B1 --3GT30G--50 \DWG\CNPD\919\NM109J\51

    Untitled

    Abstract: No abstract text available
    Text: 4 2 5 7 6 RE V IS IO N S ZONE D E 5 C R IP T I0 N \P E R R E Q U E S T \D A T E 4 - 0 - CO O LO xh LO eg PCB MOUNTING HOLE N O T E S : F IN IS H P L A T IN G T H IC K N E S S IN M IC R O - IN C H E S 1. BRASS PER Q Q - B - 6 2 6 2 . G O LD P L. 3 M IN . T H IC K O VE R N IC K E L P L . 1 0 0 M IN . T H IC K


    OCR Scan     		PDF B1252B1 3GT30G

    Untitled

    Abstract: No abstract text available
    Text: NOTES: 1. MATERIALS AND FINISHES PLATING THICKNESS IN MICRO-INCHES : HOUSING - BRASS, GOLD PLATING BODY - BERYLLIUM COPPER, GOLD PLATING CONTACT - BRASS, GOLD PLATING INSULATOR - PTFE 2 . ELECTRICAL: A. IMPEDANCE: 50 OHM B. FREQUENCY RANGE: DC 0 - 6 GHz C. DIELECTRIC WITHSTANDING VOLTAGE: 1000 VRMS, MIN.


    OCR Scan     		PDF CHANGED\RD--DM89011401B 1040601R3 CX1181A1 1181AAA45GE5F 919--120P-- \DWG\MCX\1181A1\085-50\3GT30GSZ-C

    3604BD

    Abstract: 3604B KW-001 JIS H3250 FA1N
    Text: 3 4 5 7 R E V IS IO N S ISS ZONE D E S C R IP T IO N \ P E R PEO UEST\ DATE F CO NFIGURATION NO CHANGES PPAP CONTROL: PERMITTED TO QUALIFIED DRAWING WITHOUT C U STO M ER A P P R O V A L + 0.2 E PCB TABLE KEY C FA1 —NASP —P C B - 1 FI-: L C 1 020 1 A FA1—N B S P - P C B — 1 F h L C 1 0 2 0 2 A


    OCR Scan     		PDF BW--001 CW--001 0G--50 00-0032T-50 3GT30G 3604BD 3604B KW-001 JIS H3250 FA1N

    Untitled

    Abstract: No abstract text available
    Text: 3 6 4 7 J REVISIONS ISS ZONE DESCRIPTION\PER REQUEST\DATE RECOMMENDED CABLE STRIPPING DIM’S •1 2.7 - 20.2 NOTES: FINISH PLATING THICKNESS IN MICRO-INCHES 1. BRASS PER QQ-B-626 2. GOLD PL. 3 MIN. THICK OVER NICKEL PL. 100 MIN. THICK OVER COPPER STRIKE


    OCR Scan     		PDF QQ-B-626 MIL--P--19468 -51/445X127 121AA-50 121AA-43 121AA-3T75 121AA-2T75 121AA-1 -56/5X19RAL

    Untitled

    Abstract: No abstract text available
    Text: 3 2 6 4 7 8 REVISIONS ISS DESCRIPTION\PER REQUEST\DATE ZONE F STAKE IN 4 PLACES EQUALLY SPACED 9 0 “ APART f m ii 90- (SEE REMARK 1,2) LO E E -e D PCB MOUNTING 1. MAX. NOTES: 1. 2. 3. C 4. 5. 6. 7. B A D HOLE PANEL THICKNESS = 9 m m FINISH (PLATING THICKNESS IN MICRO-INCHES)


    OCR Scan     		PDF -B-626 -B-613 -B-750 -5X05-T NS00AGM09A CP00ALP01A CP12ADV01A SMB1251S1 I2AEL01A B1252PF-001-3G

    Untitled

    Abstract: No abstract text available
    Text: 6 4 7 REVISIONS I5S DESC RI PTI0 N\PER REQUEST\DATE ZONE F RECOMMENDED C A B L E S T R IP P IN G DIM'S RECOMMENDED M O U N T IN G HOLE E D C N O T E S : F IN IS H P L A T IN G 1. B R A S S 2. BRASS J . GOLD O VE R PER PER T H IC K N E S S PL. 3 MI LI T H IC K


    OCR Scan     		PDF -ES-626 O-B-61 0-C-53D 12D--315 1MCX6421A1 --3GT30G 121A1-3 MMCX612 -316U MMCX6421A1

    Untitled

    Abstract: No abstract text available
    Text: 6 4 I5S ZONE REVISIONS D ESC RI PTI0 N \P E R REQUEST\DATE 7 F F E E D D RECOMMENDED CABLE STRIPPING DIM’ C c LO ò NOTES: FINISH P^ TIN G THICKNESS IN MICRO-INCHES 1. BRASS PER Q Q -B -6 2 6 2. BRASS PER Q D -B -B 1 3 3. GOLD PL. 3 MIN. THICK OVER NICKEL PL, 100 MIN. THICK


    OCR Scan     		PDF 12D--315 T30G-- --3GT30G

    Untitled

    Abstract: No abstract text available
    Text: 2 4 6 5 7 REVI5IO NS ISS ZONE DE5CRIPTIQN\ PER REQUEST\DATE F E 4 - 1 .0 2 SQ. D 5.08 ? SQ« - C PC B MOUNTING HOLE NOTES: FINISH PLATING TH IC K N ES S IN M IC RO -IN C H ES 1 . BRASS PE R Q Q - B - 6 2 6 2. GOLD PL. 3 MIN. THICK O VER NIC KEL PL. 1 0 0 MIN. THICK


    OCR Scan     		PDF Z1251B6-3G B7700-3-A B6--3GT30G-75

    Untitled

    Abstract: No abstract text available
    Text: 4 6 7 REVISIONS I5S ZONE o.: DESCRIPTIONXPER REQUEST\DATE F F E E D D C C NOTES: 1. Z. 3. FINISH PLATING THICKNESS MICRO-INCHES BRASS PER Q C - B - 6 2 6 BRASS PER Q O -B -B 1 3 GOLD PL 3 MIKE THICK OVER NICKEL PL. 100 MIN. THICK OVER COPPER STRIKE +. BERYLLIUM COPPER PER Q Q -C -5 3 U


    OCR Scan     		PDF 3GT30G--

    Untitled

    Abstract: No abstract text available
    Text: REVISIONS THIRD ANGLE PROJ. NOTES: 1. MATERIALS AND FINISHES: BODY - BRASS, GOLD PLATING CONTACT - BERYLLIUM COPPER, GOLD PLATING INSULATOR - PTFE 2 . ELECTRICAL: A. IMPEDANCE: 5 0 OHM B. FREQUENCY RANGE: DC 0 - 6 GHz C. DIELECTRIC WITHSTANDING VOLTAGE: 5 0 0 VRMS, MIN.


    OCR Scan     		PDF 10040701T1 05-Mar-03 11-Aug-08 30-Apr-09 \DWG\MMCX\6251N3\50\3GT30G-DSZ 1AAG56GE5F