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

    24144 Search Results

    SF Impression Pixel

    24144 Price and Stock

    Bourns Inc CWF2414-4R7K

    IND,2.2X1.4X1.3MM,4.7UH10%,0.84A
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey CWF2414-4R7K Cut Tape 3,990 1
    • 1 $0.13
    • 10 $0.107
    • 100 $0.13
    • 1000 $0.07233
    • 10000 $0.07233
    		Buy Now
    CWF2414-4R7K Digi-Reel 3,990 1
    • 1 $0.13
    • 10 $0.107
    • 100 $0.13
    • 1000 $0.07233
    • 10000 $0.07233
    		Buy Now
    CWF2414-4R7K Reel 2,000 2,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.05949
    		Buy Now
    Avnet Americas CWF2414-4R7K Reel 12 Weeks 2,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.0529
    		Buy Now
    Mouser Electronics CWF2414-4R7K 1,980
    • 1 $0.13
    • 10 $0.098
    • 100 $0.084
    • 1000 $0.066
    • 10000 $0.055
    		Buy Now
    Newark CWF2414-4R7K Cut Tape 1,835 5
    • 1 $0.198
    • 10 $0.13
    • 100 $0.1
    • 1000 $0.1
    • 10000 $0.1
    		Buy Now
    Avnet Abacus CWF2414-4R7K Reel 13 Weeks 2,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    		Buy Now
    Master Electronics CWF2414-4R7K
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.0581
    		Buy Now

    Pasternack Enterprises PE3W02414-48

    COAX CABLE TNC TO TNC 4'
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey PE3W02414-48 278 1
    • 1 $82.15
    • 10 $82.15
    • 100 $70.6472
    • 1000 $70.6472
    • 10000 $70.6472
    		Buy Now
    Pasternack Enterprises US PE3W02414-48 278 1
    • 1 $78.99
    • 10 $78.99
    • 100 $67.93
    • 1000 $67.93
    • 10000 $67.93
    		Buy Now

    HARTING Technology Group 09300241441

    CONN HOOD TOP ENTRY SZ24B PG29
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey 09300241441 Bulk 106 1
    • 1 $35.5
    • 10 $30.172
    • 100 $25.65
    • 1000 $24.0462
    • 10000 $24.0462
    		Buy Now
    TTI 09300241441 Each 1
    • 1 $30.34
    • 10 $25.81
    • 100 $23.2
    • 1000 $22.74
    • 10000 $22.74
    		Buy Now
    TME 09300241441 1
    • 1 $26.06
    • 10 $26.06
    • 100 $20.85
    • 1000 $19.16
    • 10000 $19.16
    		Get Quote
    Interstate Connecting Components 09300241441 5
    • 1 $36.44
    • 10 $30.3667
    • 100 $29.3871
    • 1000 $29.3871
    • 10000 $29.3871
    		Buy Now
    Neutron USA 09300241441 50
    • 1 $105.18
    • 10 $105.18
    • 100 $105.18
    • 1000 $105.18
    • 10000 $105.18
    		Buy Now

    Amphenol SV Microwave 1112-4144

    SMP FEMALE TO FEMALE BULLET, SPR
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey 1112-4144 Tray 49 1
    • 1 $146.35
    • 10 $124.411
    • 100 $111.0714
    • 1000 $111.0714
    • 10000 $111.0714
    		Buy Now
    Interstate Connecting Components 1112-4144
    • 1 $130.4494
    • 10 $123.4921
    • 100 $120.2845
    • 1000 $120.2845
    • 10000 $120.2845
    		Buy Now
    PEI Genesis 1112-4144 1 1
    • 1 $108.93
    • 10 $108.93
    • 100 $108.93
    • 1000 $108.93
    • 10000 $108.93
    		Buy Now
    Richardson RFPD 1112-4144 50
    • 1 -
    • 10 -
    • 100 $107.47
    • 1000 $99.97
    • 10000 $99.97
    		Buy Now
    FDH Electronics 1112-4144 50 1
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    		Get Quote
    Master Electronics 1112-4144 100
    • 1 $142.47
    • 10 $126.19
    • 100 $117.4
    • 1000 $117.4
    • 10000 $117.4
    		Buy Now

    HARTING Technology Group 24144080000

    HA-VIS ECON 2080GX-I-A - UNMANAG
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey 24144080000 Bulk 24 1
    • 1 $419.64
    • 10 $419.64
    • 100 $419.64
    • 1000 $419.64
    • 10000 $419.64
    		Buy Now
    Mouser Electronics 24144080000 1
    • 1 $475.58
    • 10 $475.58
    • 100 $475.58
    • 1000 $475.58
    • 10000 $475.58
    		Buy Now
    Verical 24144080000 4 1
    • 1 $228.116
    • 10 $228.116
    • 100 $228.116
    • 1000 $228.116
    • 10000 $228.116
    		Buy Now
    Newark 24144080000 Bulk 4 1
    • 1 $545.78
    • 10 $545.78
    • 100 $545.78
    • 1000 $545.78
    • 10000 $545.78
    		Buy Now
    RS 24144080000 Bulk 5 3 Weeks 1
    • 1 $395.71
    • 10 $395.71
    • 100 $395.71
    • 1000 $395.71
    • 10000 $395.71
    		Buy Now
    Find more 24144 price and stock on Findchips.com

    24144 Datasheets (11)

    Part ECAD Model Manufacturer Description Curated Datasheet Type PDF
    24144050000 HARTING Technology Group HA-VIS ECON 2050GX-I-A - UNMANAG Original PDF
    24144050001 HARTING Technology Group HA-VIS ECON 2050GX-I-AW - UNMANA Original PDF
    24144080000 HARTING Technology Group HA-VIS ECON 2080GX-I-A - UNMANAG Original PDF
    2414-4314-AL RAF Electronic Hardware HEX STANDOFFPLAIN ALUMINUM5/8 HE Original PDF
    2414-4314-B RAF Electronic Hardware HEX STANDOFFPLAIN BRASS5/8 HEX X Original PDF
    2414-4314-N RAF Electronic Hardware HEX STANDOFFNO FINISH - NYLON5/8 Original PDF
    2414-4314-S RAF Electronic Hardware HEX STANDOFFPLAIN STEEL5/8 HEX X Original PDF
    2414-4314-SS RAF Electronic Hardware HEX STANDOFFPLAIN STAINLESS STEE Original PDF
    241-4-48 Signal Transformer Power Transformers, Transformers, XFRMR LAMINATED 6VA CHAS MOUNT Original PDF
    241-4-48A18 Pulse Engineering Power Transformers, Transformers, XFRMR LAMINATED 6VA CHAS MOUNT Original PDF
    241-4-48L Signal Transformer Power Transformers, Transformers, XFRMR LAMINATED 6VA CHAS MOUNT Original PDF

    24144 Datasheets Context Search

    Catalog Datasheet MFG & Type Document Tags PDF

    3TF44

    Abstract: 3TF52 3tf42 3TF46 3TF4222 3TF4422 simoreg 6ra24 3TF4222-0A 3TF4822 3TF5222-0AK6
    Text: 2. Parts & Service Page 2-1 2.1 Power Module Part Numbers: 5 to 300 HP @ 500 VDC RATING (Amps DC) 1Q PART NUMBER 1Q TYPE (MLFB) 4Q PART NUMBER 4Q TYPE (MLFB) 15 30 60 90 123 175 255 510 A1-116-110-503 A1-116-110-504 A1-116-110-505 A1-116-110-506 A1-116-110-508


    Original     		A1-116-110-503 A1-116-110-504 A1-116-110-505 A1-116-110-506 A1-116-110-508 A1-116-110-509 A1-116-110-511 A1-116-110-513 6RA2413-1FS22 6RA2418-1FS22 3TF44 3TF52 3tf42 3TF46 3TF4222 3TF4422 simoreg 6ra24 3TF4222-0A 3TF4822 3TF5222-0AK6 PDF

    M24308

    Abstract: FC8122D M24308/4-11F DD15M10000-50-799 M24308/2-14 fc6018d FC8022D-14 m24308/25-6F M24308/24-2p M24308/23-76
    Text: Catalog C-001 Rev. B POSITRONIC INDUSTRIES About Us Founded in 1966, Positronic Industries is a vertically integrated manufacturer of high quality interconnect products. Positronic has earned the worldwide reputation as a service oriented, quick-reaction, top quality connector supplier. We


    Original     		C-001 M24308 FC8122D M24308/4-11F DD15M10000-50-799 M24308/2-14 fc6018d FC8022D-14 m24308/25-6F M24308/24-2p M24308/23-76 PDF

    sGCT

    Abstract: "symmetrical gate commutated thyristor" Allen-Bradley VFD Powerflex 700 thyristor 6-pulse full wave firing circuit siemens VFD availability SGCTs symmetrical gate commutated thyristor sGCT function how a three phase vfd works EN61000-2-4
    Text: Medium Voltage AC Drives Selection Guide PowerFlex 7000 • Direct-to-Drive Technology • Air-Cooled • Liquid-Cooled POWERFLEX 7000 MEDIUM VOLTAGE AC DRIVES Improve efficiency and maximize profitability with a single solution for all your motor control applications from 200 hp to 34,000 hp


    Original     		7000-SG010C-EN-P 7000-SG010B-EN-P sGCT "symmetrical gate commutated thyristor" Allen-Bradley VFD Powerflex 700 thyristor 6-pulse full wave firing circuit siemens VFD availability SGCTs symmetrical gate commutated thyristor sGCT function how a three phase vfd works EN61000-2-4 PDF

    20A4

    Abstract: 241-6-20A34 241-4-10A11 241-5-10A21 241-6-10A31 241-7-10A41 241-8-10A51 241-3-10A1 241-3-12A2
    Text: POWER TRANSFORMERS Low Frequency Laminated — Chassis-Tran Series AGENCY APPROVALS „ UL, 506, File E73539 „ UL 1446, File E80130 „ CSA 22.2#66, File LR68051-2 „ UL Recognized Class B Channel frame mounting Split bobbin. High isolation 2500V . 2500VRMS Hipot


    Original     		E73539 E80130 LR68051-2 2500VRMS PC2005 20A4 241-6-20A34 241-4-10A11 241-5-10A21 241-6-10A31 241-7-10A41 241-8-10A51 241-3-10A1 241-3-12A2 PDF

    Untitled

    Abstract: No abstract text available
    Text: Two-4-One Power Transformers Chassis Mount with Lead Wires SM Split Bobbin with High Isolation Signal’s 241-L transformers use a split bobbin that provides superior isolation and low capacitive coupling. General Specifications • Power - 2.4 VA to 100 VA


    Original     		241-L E66312 UL1015, 18AWG PDF

    signal transformer 4-44-5016

    Abstract: pss 3056 4-44-4020 spw-055 transformer 4-44-6024 4-49-8230 4-44-5016 4-44-3012 4-44-3010 4-49-6024
    Text: Cross Reference Chart Competitor Part No. 4-44-5010 4-44-5012 4-44-5016 4-44-5020 4-44-5024 4-44-5028 4-44-5036 4-44-3010 4-44-3012 4-44-3016 4-44-3020 4-44-3024 4-44-3028 4-44-3036 4-44-6010 4-44-6012 4-44-6016 4-44-6020 4-44-6024 4-44-6028 4-44-6036 4-44-7010


    Original     		ST-3-28 ST-3-36 ST-3-48 ST-3-56 ST-4-10 ST-4-12 ST-4-120 ST-4-16 ST-4-20 ST-4-24 signal transformer 4-44-5016 pss 3056 4-44-4020 spw-055 transformer 4-44-6024 4-49-8230 4-44-5016 4-44-3012 4-44-3010 4-49-6024 PDF

    SPW 078

    Abstract: pst 39 transformer Wabash Transformer spw -136 spw+-079+transformer 4-07-7016 MT12/SPW 078 spw -055 transformer pc-24-450 TRANSFORMER 4-44-5010
    Text: WabashTransformer.com ● Class 2, VDE, UL, CSA Recognized ● Zero Defect, 100 % Tested ● Competitive Prices ● Standard & Custom Designs ● 2 Year Warranty Table of Contents Product Description Class 2 CL UL5085-3 Transformer International Power Transformer


    Original     		UL5085-3 SPW 078 pst 39 transformer Wabash Transformer spw -136 spw+-079+transformer 4-07-7016 MT12/SPW 078 spw -055 transformer pc-24-450 TRANSFORMER 4-44-5010 PDF

    FRL-644

    Abstract: 572.741.022.0 CDQ2B63-50D Rexroth 7860 CT032U0025AE AA-0058G 70PYES0033 AF3000-03 8L502-102 JA1040
    Text: Issued November 1997 262-1435 Data Pack G Pneumatic cross reference Data Sheet Listing products from COMPAIR MAXAM CROUZET DOMNICK HUNTER LEGRIS MANNESMANN REXROTH NORGREN ORIGA SMC WATSON SMITH with a cross reference to the RS stock number. Products not listed can be obtained via the RS Pneumatics searchline


    Original     		PDF

    SKIIP 33 nec 125 t2

    Abstract: skiip 613 gb 123 ct RBS 6302 ericsson SKIIP 513 gb 173 ct THERMISTOR ml TDK 150M pioneer PAL 010a Project Report of smoke alarm using IC 555 doc SKiip 83 EC 125 T1 ericsson RBS 6000 series INSTALLATION MANUAL Ericsson Installation guide for RBS 6302
    Text: Discontinued and Superseded Stock Number History. This document contains Discontinued and Superseded Stock Number History. The information is listed in the following format: Stock Number: The original RS Stock Number of the item. Brief Description: The Invoice Description of the item.


    Original     		734TL UWEB-MODEM-34 HCS412/WM TLV320AIC10IPFB 100MB NEON250 GA-60XM7E BLK32X40 BLK32X42 SKIIP 33 nec 125 t2 skiip 613 gb 123 ct RBS 6302 ericsson SKIIP 513 gb 173 ct THERMISTOR ml TDK 150M pioneer PAL 010a Project Report of smoke alarm using IC 555 doc SKiip 83 EC 125 T1 ericsson RBS 6000 series INSTALLATION MANUAL Ericsson Installation guide for RBS 6302 PDF

    Siecor 62.5

    Abstract: SIECOR Fiber patch panel k514 C8831 Corning Infinicor 300 ofnp ZA-2385 ZA-1457 K5141 K3116 c9131
    Text: Cable Assemblies OptiFit Node Assembly | Photo CAPSS1721 Corning Cable Systems FC Ultra PC 12-Fiber | Photo CCA30 Description As the industry’s leading supplier of single-mode cable assemblies, Corning Cable Systems offers the most complete line of connectors and factory-terminated cables.


    Original     		CAPSS1721 12-Fiber CCA30 EVO-29-EN Siecor 62.5 SIECOR Fiber patch panel k514 C8831 Corning Infinicor 300 ofnp ZA-2385 ZA-1457 K5141 K3116 c9131 PDF

    DP-241-8-24

    Abstract: 36VCT DP-241-7-24 DP-241-6-24 DP-241-8-28 Signal Transformer dp-241-7-12 DP-241-4-12 DP-241-5-12 signal transformer 241-8-36 51265
    Text: Two-4-One Power Transformers Chassis Mount SM Split Bobbin with High Isolation CV Signal’s 241 transformers use a split bobbin that provides superior isolation and low capacitive coupling. General Specifications • Power – 2.4 VA to 100 VA ■ Dielectric Strength – 2500VRMS Hipot


    Original     		2500VRMS 115/230V E63829) 115/230V 24hrs) DP-241-8-24 36VCT DP-241-7-24 DP-241-6-24 DP-241-8-28 Signal Transformer dp-241-7-12 DP-241-4-12 DP-241-5-12 signal transformer 241-8-36 51265 PDF

    Untitled

    Abstract: No abstract text available
    Text: FIBER OPTIC CABLE SELECTION GUIDE PRODUCT TYPE Construction Options Fiber Count Part Number* Catalog Page 1 Fiber xxyyySNR3.0 40 2 Fibers xxyyyZNR3.0 40 1 Fiber xxyyySNU3.0 40 PRODUCT TYPE Construction Options Fiber Count Part Number* Catalog Page Single Jacket


    Original     		SMF-28e+ DAT-0096-R0112 PDF

    Untitled

    Abstract: No abstract text available
    Text: IND 006 Effective: 11/15/2011 PREFERRED DISTRIBUTOR PRICE LIST Copper will escalate/de-escalate at time of order shipment Comex Copper Base $3.25 PART NUMBER AWG SIZE Copper Weight/MFT PRICE/MFT 9 12 17 30 12 18 25 46 18 27 37 71 $225 $266 $349 $551 $272 $335


    Original     		PDF

    Untitled

    Abstract: No abstract text available
    Text: IND 005 Effective: 3/7/2011 PREFERRED DISTRIBUTOR PRICE LIST Copper will escalate/de-escalate at time of order shipment Comex Copper Base $4.50 PART NUMBER AWG SIZE Copper Weight/MFT PRICE/MFT 9 12 17 30 12 18 25 46 18 27 37 71 $205 $242 $317 $501 $248 $304


    Original     		PDF

    sony ps3 eye camera

    Abstract: 6d40 engine diagram sgx530* vector graphics manual dsi CVBS BTA 16 6008 PowerVR SGX series 5 "cmos camera "mc 7258 wiring diagram ccd camera mc 7218 wiring diagram ET 439 power module fuji
    Text: Public Version AR Y OMAP OMAP34xx Multimedia Device Silicon Revision 3.1, 3.1.1 Texas Instruments OMAP™ Family of Products EL IM IN Version R PR Technical Reference Manual Literature Number: SWPU114R July 2007 – Revised April 2009 Public Version www.ti.com


    Original     		OMAP34xx SWPU114R sony ps3 eye camera 6d40 engine diagram sgx530* vector graphics manual dsi CVBS BTA 16 6008 PowerVR SGX series 5 "cmos camera "mc 7258 wiring diagram ccd camera mc 7218 wiring diagram ET 439 power module fuji PDF

    DST4-36B26

    Abstract: No abstract text available
    Text: LAMINATED Transformers pulseelectronics.com LT2012 4/12 PRODUCT OVERVIEW: LAMINATED TRANSFORMERS Pulse ofers power ratings from 1.1 VA to 175 VA, open frame transformers, with a wide variety of domestic and international agency approvals. Pulse is truly


    Original     		LT2012 DST4-36B26 PDF

    DP-241-7-24

    Abstract: DP-241-6-24 241-7-24 DP-241-7-48 DP-241-4-12 DP-241-7-20 241-4-24 Signal Transformer dp-241-7-12 signal transformer 241-8-36 DP-241-5-12
    Text: Two-4-One Power Transformers Chassis Mount Split Bobbin Construction Providing Superior Isolation. SM Signal’s 241 transformers use a split bobbin construction that provides superior isolation and low capacitive coupling. General Specifications • Power - 2.4 VA to 100 VA


    Original     		E66312 E63829 115/230V DP-241-7-24 DP-241-6-24 241-7-24 DP-241-7-48 DP-241-4-12 DP-241-7-20 241-4-24 Signal Transformer dp-241-7-12 signal transformer 241-8-36 DP-241-5-12 PDF

    irfb4115

    Abstract: BTY79 equivalent diode skn 21-04 marking CODE W04 sot-23 bbc 598 479 DIODE mw 137 600g TFK 401 S 673 Vishay Telefunken tfk transistor INFINEON transistor marking W31 JYs marking transistor
    Text: 573 Technical portal and online community for Design Engineers - www.element-14.com Discrete & Power Devices Page 700 Bridge Rectifiers . . . . . . . . . . . . . . . . . . . . . . . . Diodes Schottky . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .


    Original     		element-14 F155-6A F155-10A F165-15A F175-25A irfb4115 BTY79 equivalent diode skn 21-04 marking CODE W04 sot-23 bbc 598 479 DIODE mw 137 600g TFK 401 S 673 Vishay Telefunken tfk transistor INFINEON transistor marking W31 JYs marking transistor PDF

    MCF5253

    Abstract: CBM 4080 IEC958 IEC958-3 Bi-Phase Mark modulated samsung S4 TMM 24105
    Text: MCF5253 Reference Manual Document Number: MCF5253RM Rev. 1 08/2008 How to Reach Us: Home Page: www.freescale.com E-mail: support@freescale.com USA/Europe or Locations Not Listed: Freescale Semiconductor Technical Information Center, CH370 1300 N. Alma School Road


    Original     		MCF5253 MCF5253RM CH370 32-bit MCF5253 CBM 4080 IEC958 IEC958-3 Bi-Phase Mark modulated samsung S4 TMM 24105 PDF

    M24308

    Abstract: M24308/24-77 PWB 24227 M24308_24_75 MIL-DTL-24308/23 MIL-DTL-24308G mil-dtl-24308 5935 - connectors electrical ITT M24308 M24308/24-62
    Text: DEFENSE LOGISTICS AGENCY DEFENSE SUPPLY CENTER, COLUMBUS POST OFFICE BOX 3990 COLUMBUS, OHIO 43218-3990 IN REPLY REFER TO DSCC -VAI Mr. Antonelli/ (DSN 850 614-692-0576/ra) 5 October 2007 SUBJECT: Initial Drafts of MIL-DTL-24308G and specification sheets /1 through /8 and /23 through /28,


    Original     		614-692-0576/ra) MIL-DTL-24308G MIL-DTL-24308/24H M24308 M24308/24-77 PWB 24227 M24308_24_75 MIL-DTL-24308/23 mil-dtl-24308 5935 - connectors electrical ITT M24308 M24308/24-62 PDF

    DP-241-5-24L

    Abstract: DP-241-4-12 DP-241-7-24 120VCT UL1015 hook up wire DP-241-8-120 24174 DP-241-8-24 241-7-24L 241-4-10L
    Text: Two-4-One Power Transformers Chassis Mount with Lead Wires Split Bobbin with High Isolation SM Signal’s 241-L transformers use a split bobbin that provides superior isolation and low capacitive coupling. General Specifications • Power - 2.4 VA to 100 VA


    Original     		241-L E66312 UL1015, 18AWG DP-241-5-24L DP-241-4-12 DP-241-7-24 120VCT UL1015 hook up wire DP-241-8-120 24174 DP-241-8-24 241-7-24L 241-4-10L PDF

    1.5A 15va transformer

    Abstract: ee20 current transformer
    Text: Laminated Transformers TABLE of CONTENTS 01 - Mini-Line EE20 - 0.08VA-0.5VA EE20 / 4 - 0.08VA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 EE20 / 6.1 - 0.35VA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3


    Original     		08VA-0 LT2010 1.5A 15va transformer ee20 current transformer PDF

    Untitled

    Abstract: No abstract text available
    Text: LC 382040-401* LC 241440-101* O 0 o o o .o .o .o i o 0 - 0 o fO .O fO .O * w J-L 38 -* k LC 382232-700* LC 522232-300* - - - -J 2 7 i am t * 0 m U ' U


    OCR Scan     		PDF

    VIDELEC LCD

    Abstract: 513040 videlec LC554731-311 513031 LC11402600-310 LC382080-411
    Text: This Material Copyrighted By Its Respective Manufacturer N AUER PHILIPS/DISCRETE A m p e r e ;T-41-38 bbSBTBl OOCHÖ? 4 7 07» D x Videlec Liquid Crystal Display: STANDARD TYRE RANGE AND GLASS SIZES LC 241440-101* LC 382040-401’ ÎO 0-0 o O O O Ö l u j .u .u


    OCR Scan     		T-41-38 VIDELEC LCD 513040 videlec LC554731-311 513031 LC11402600-310 LC382080-411 PDF