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

    SMCG64 Search Results

    SF Impression Pixel

    SMCG64 Price and Stock

    Microchip Technology Inc MSMCG64A

    TVS DIODE 64VWM 103VC SMCG
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey MSMCG64A Bulk 68 1
    • 1 $1.61
    • 10 $1.61
    • 100 $1.61
    • 1000 $1.61
    • 10000 $1.61
    Buy Now
    Avnet Americas MSMCG64A Reel 40 Weeks 500
    • 1 $1.76
    • 10 $1.76
    • 100 $1.63
    • 1000 $1.58
    • 10000 $1.58
    Buy Now
    MSMCG64A Bulk 40 Weeks 600
    • 1 $1.5778
    • 10 $1.5778
    • 100 $1.45275
    • 1000 $1.4453
    • 10000 $1.4453
    Buy Now
    Mouser Electronics MSMCG64A 219
    • 1 $1.61
    • 10 $1.61
    • 100 $1.61
    • 1000 $1.49
    • 10000 $1.43
    Buy Now
    Newark MSMCG64A Bulk 600
    • 1 -
    • 10 -
    • 100 -
    • 1000 $1.43
    • 10000 $1.43
    Buy Now
    Microchip Technology Inc MSMCG64A 389 40 Weeks
    • 1 $1.61
    • 10 $1.61
    • 100 $1.49
    • 1000 $1.35
    • 10000 $1.35
    Buy Now
    NAC MSMCG64A 219
    • 1 $1.75
    • 10 $1.75
    • 100 $1.58
    • 1000 $1.42
    • 10000 $1.42
    Buy Now
    Master Electronics MSMCG64A
    • 1 -
    • 10 -
    • 100 -
    • 1000 $1.56
    • 10000 $1.56
    Buy Now

    Littelfuse Inc SMCG64A-HR

    TVS DIODE 64VWM 103VC DO215AB
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey SMCG64A-HR Reel 1,500
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $13.75
    Buy Now
    Mouser Electronics SMCG64A-HR
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $13.99
    Get Quote
    Newark SMCG64A-HR Reel 1,500
    • 1 -
    • 10 -
    • 100 -
    • 1000 $13.09
    • 10000 $13.09
    Buy Now
    TTI SMCG64A-HR Reel 1,500
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $13.76
    Buy Now
    Ozdisan Elektronik SMCG64A-HR
    • 1 $25.89379
    • 10 $25.89379
    • 100 $25.89379
    • 1000 $25.89379
    • 10000 $24.1998
    Get Quote

    Microchip Technology Inc MSMCG64AE3

    TVS DIODE 64VWM 103VC SMCG
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey MSMCG64AE3 Bulk 600
    • 1 -
    • 10 -
    • 100 -
    • 1000 $1.48
    • 10000 $1.48
    Buy Now
    Newark MSMCG64AE3 Bulk 600
    • 1 -
    • 10 -
    • 100 -
    • 1000 $1.41
    • 10000 $1.41
    Buy Now
    Microchip Technology Inc MSMCG64AE3 40 Weeks
    • 1 $1.59
    • 10 $1.59
    • 100 $1.48
    • 1000 $1.34
    • 10000 $1.34
    Buy Now
    NAC MSMCG64AE3 221
    • 1 $1.74
    • 10 $1.74
    • 100 $1.57
    • 1000 $1.41
    • 10000 $1.41
    Buy Now
    Master Electronics MSMCG64AE3
    • 1 -
    • 10 -
    • 100 -
    • 1000 $1.55
    • 10000 $1.55
    Buy Now

    Littelfuse Inc SMCG64A-HRA

    TVS DIODE 64VWM 103VC DO215AB
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey SMCG64A-HRA Reel 1,500
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $12.5
    Buy Now
    Mouser Electronics SMCG64A-HRA
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $12.72
    Get Quote
    Newark SMCG64A-HRA Reel 1,500
    • 1 -
    • 10 -
    • 100 -
    • 1000 $11.9
    • 10000 $11.9
    Buy Now
    TTI SMCG64A-HRA Reel 1,500
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $12.5
    Buy Now
    Ozdisan Elektronik SMCG64A-HRA
    • 1 $23.53989
    • 10 $23.53989
    • 100 $23.53989
    • 1000 $23.53989
    • 10000 $21.9999
    Get Quote

    Microchip Technology Inc MSMCG64CAE3

    TVS DIODE 64VWM 103VC SMCG
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey MSMCG64CAE3 Bulk 600
    • 1 -
    • 10 -
    • 100 -
    • 1000 $1.56
    • 10000 $1.56
    Buy Now
    Avnet Americas MSMCG64CAE3 Bulk 40 Weeks 600
    • 1 $1.67
    • 10 $1.67
    • 100 $1.56
    • 1000 $1.5
    • 10000 $1.5
    Buy Now
    Microchip Technology Inc MSMCG64CAE3 40 Weeks
    • 1 $1.67
    • 10 $1.67
    • 100 $1.56
    • 1000 $1.4
    • 10000 $1.4
    Buy Now
    NAC MSMCG64CAE3 206
    • 1 $1.86
    • 10 $1.86
    • 100 $1.68
    • 1000 $1.51
    • 10000 $1.51
    Buy Now
    Master Electronics MSMCG64CAE3
    • 1 -
    • 10 -
    • 100 -
    • 1000 $1.66
    • 10000 $1.66
    Buy Now

    SMCG64 Datasheets (25)

    Part ECAD Model Manufacturer Description Curated Datasheet Type PDF
    SMCG64 General Semiconductor SURFACE MOUNT TRANSZORB TRANSIENT VOLTAGE SUPPRESSOR Original PDF
    SMCG64 Microsemi Unidirectional and Bidirectional Surface Mount Transient Absorption Zeners 1500 Watts Scan PDF
    SMCG64A General Semiconductor SURFACE MOUNT TRANSZORB TRANSIENT VOLTAGE SUPPRESSOR Original PDF
    SMCG64A Microsemi Unidirectional and Bidirectional Surface Mount Transient Absorption Zeners 1500 Watts Scan PDF
    SMCG64A-E3/57T Vishay Semiconductors TVS - Diodes, Circuit Protection, TVS DIODE 64VWM 103VC SMC Original PDF
    SMCG64A-E3/9AT Vishay Semiconductors TVS - Diodes, Circuit Protection, TVS DIODE 64VWM 103VC SMC Original PDF
    SMCG64AHE3/57T Vishay Semiconductors TVS - Diodes, Circuit Protection, TVS DIODE 64VWM 103VC SMC Original PDF
    SMCG64AHE3/9AT Vishay Semiconductors TVS - Diodes, Circuit Protection, TVS DIODE 64VWM 103VC SMC Original PDF
    SMCG64A-HR Littelfuse Circuit Protection - TVS - Diodes - TVS DIODE 64V 103V DO215AB Original PDF
    SMCG64A-HRA Littelfuse Circuit Protection - TVS - Diodes - TVS DIODE 64V 103V DO215AB Original PDF
    SMCG64A-M3/57T Vishay Semiconductor Diodes Division Circuit Protection - TVS - Diodes - TVS DIODE 64V 103V DO215AB Original PDF
    SMCG64A-M3/9AT Vishay Semiconductor Diodes Division Circuit Protection - TVS - Diodes - TVS DIODE 64V 103V DO215AB Original PDF
    SMCG64ATR Microsemi 1500 W Transient Voltage Suppressor Original PDF
    SMCG64C Microsemi 1500 W Transient Voltage Suppressor Original PDF
    SMCG64C Microsemi Unidirectional and Bidirectional Surface Mount Transient Absorption Zeners 1500 Watts Scan PDF
    SMCG64CA Microsemi Unidirectional and Bidirectional Surface Mount Transient Absorption Zeners 1500 Watts Scan PDF
    SMCG64CA-E3/57T Vishay Semiconductors TVS - Diodes, Circuit Protection, TVS DIODE 64VWM 103VC SMC Original PDF
    SMCG64CA-E3/9AT Vishay Semiconductors TVS - Diodes, Circuit Protection, TVS DIODE 64VWM 103VC SMC Original PDF
    SMCG64CAHE3/57T Vishay Semiconductors TVS - Diodes, Circuit Protection, TVS DIODE 64VWM 103VC SMC Original PDF
    SMCG64CAHE3/9AT Vishay Semiconductors TVS - Diodes, Circuit Protection, TVS DIODE 64VWM 103VC SMC Original PDF

    SMCG64 Datasheets Context Search

    Catalog Datasheet MFG & Type PDF Document Tags

    marking ghm

    Abstract: JESD22-B102 J-STD-002 SMCG10 SMCG10A gex 96 a
    Text: SMCG5.0 thru SMCG188CA Vishay General Semiconductor Surface Mount TRANSZORB Transient Voltage Suppressors FEATURES • Low profile package • Ideal for automated placement • Glass passivated chip junction • Available in uni-directional and bi-directional


    Original
    PDF SMCG188CA J-STD-020, 2002/95/EC 2002/96/EC DO-215AB 11-Mar-11 marking ghm JESD22-B102 J-STD-002 SMCG10 SMCG10A gex 96 a

    MXC5

    Abstract: MAC36 0-170A 1N6267 5KE200CA IEC61000-4-4 MIL-PRF19500 SMCG170CA SMCJ170CA SA3-43
    Text: SMCJ5.0 thru SMCJ170CA, e3 and SMCG5.0 thru SMCG170CA, e3 SURFACE MOUNT 1500 Watt Transient Voltage Suppressor SCOTTSDALE DIVISION APPEARANCE The SMCJ5.0-170A or SMCG5.0-170A series of 1500 W Transient Voltage Suppressors TVSs protects a variety of voltage-sensitive components. It is


    Original
    PDF SMCJ170CA, SMCG170CA, DO-214AB DO-215AB IEC61000-4-5 DO-215AB SA3-43, 170CA, DO-214AB MXC5 MAC36 0-170A 1N6267 5KE200CA IEC61000-4-4 MIL-PRF19500 SMCG170CA SMCJ170CA SA3-43

    Untitled

    Abstract: No abstract text available
    Text: SMCG5.0A thru SMCG188CA www.vishay.com Vishay General Semiconductor Surface Mount TRANSZORB Transient Voltage Suppressors FEATURES • Low profile package • Ideal for automated placement • Glass passivated chip junction • Available in uni-directional and bi-directional


    Original
    PDF SMCG188CA DO-215AB J-STD-020, 2002/95/EC. 2002/95/EC 2011/65/EU. JS709A 02-Oct-12

    XD 105 94V-0

    Abstract: BFM 41A Zener diode smd marking code 39c transistor 1BW GENERAL SEMICONDUCTOR TVS CJ 53B 30 097 transistor 110 3CG
    Text: VISHAY INTERTECHNOLOGY , INC . INTERACTIVE data book transient voltage suppressors vishay general semiconductor vse-db0002-1102 Notes: 1. To navigate: a Click on the Vishay logo on any datasheet to go to the Contents page for that section. Click on the Vishay logo on any Contents


    Original
    PDF vse-db0002-1102 XD 105 94V-0 BFM 41A Zener diode smd marking code 39c transistor 1BW GENERAL SEMICONDUCTOR TVS CJ 53B 30 097 transistor 110 3CG

    clare 951

    Abstract: PS 307 5A SMCG DO-215AB
    Text: SMCG5.0 – SMCG170CA, SMCJ5.0 – SMCJ170CA Available Surface Mount 1500 Watt Transient Voltage Suppressor DESCRIPTION The SMC 5.0 through SMC 170A series of 1500 watt Transient Voltage Suppressors TVSs protects a variety of voltage-sensitive components. The gull-wing design (SMCG) in the DO-215AB


    Original
    PDF SMCG170CA, SMCJ170CA DO-215AB DO-214AB IEC61000-4-5 DO-214AB) RF01116, DO-215AB) clare 951 PS 307 5A SMCG DO-215AB

    Untitled

    Abstract: No abstract text available
    Text: SMCG5.0A thru SMCG188CA www.vishay.com Vishay General Semiconductor Surface Mount TRANSZORB Transient Voltage Suppressors FEATURES • • • • • • • • Low profile package Ideal for automated placement Glass passivated chip junction Available in uni-directional and bi-directional


    Original
    PDF SMCG188CA J-STD-020, AEC-Q101 DO-215AB 2002/95/EC. 2002/95/EC 2011/65/EU. JS709A 02-Oct-12

    TRANSISTOR SMD MARKING CODE 1BW

    Abstract: SmD TRANSISTOR 1bw transistor SMD 5BW TRANSISTOR SMD MARKING CODE 1AM 5bw smd smd code marking 5bw KL SN 102 94v-0 smd transistor marking 3bw smd transistor 1AM yx 801
    Text: VISHAY INTERTECHNOLOGY , INC . INTERACTIVE data book transient voltage suppressors vishay general semiconductor vse-db0002-0710 Notes: 1. To navigate: a Click on the Vishay logo on any datasheet to go to the Contents page for that section. Click on the Vishay logo on any Contents


    Original
    PDF vse-db0002-0710 TRANSISTOR SMD MARKING CODE 1BW SmD TRANSISTOR 1bw transistor SMD 5BW TRANSISTOR SMD MARKING CODE 1AM 5bw smd smd code marking 5bw KL SN 102 94v-0 smd transistor marking 3bw smd transistor 1AM yx 801

    jantx SMCJ5.0A

    Abstract: C36C 0-170A 1N6267 5KE200CA IEC61000-4-4 MIL-PRF19500 SMCG170CA SMCJ170CA C36CA
    Text: SMCJ5.0 thru SMCJ170CA and SMCG5.0 thru SMCG170CA SURFACE MOUNT 1500 Watt Transient Voltage Suppressor SCOTTSDALE DIVISION APPEARANCE The SMCJ5.0-170A or SMCG5.0-170A series of 1500 W Transient Voltage Suppressors TVSs protects a variety of voltage-sensitive components from


    Original
    PDF SMCJ170CA SMCG170CA DO-214AB DO-215AB IEC61000-4-5 DO-215AB DO-214AB jantx SMCJ5.0A C36C 0-170A 1N6267 5KE200CA IEC61000-4-4 MIL-PRF19500 SMCG170CA SMCJ170CA C36CA

    GGG 92

    Abstract: DO214AB DO215AB SMCJ170CA GDZ Series marking GFQ BFQ 540 application
    Text: SMCG AND SMCJ5.0 THRU 170CA SURFACE MOUNT TRANSZORB TRANSIENT VOLTAGE SUPPRESSOR Stand-off Voltage - 5.0 - 170 Volts Peak Pulse Power - 1500 Watts DO-214AB FEATURES MODIFIED J-BEND 0.126 3.20 0.114 (2.90) ♦ Plastic package has Underwriters Laboratory Flammability Classification 94V-0


    Original
    PDF 170CA DO-214AB 50mVp-p GGG 92 DO214AB DO215AB SMCJ170CA GDZ Series marking GFQ BFQ 540 application

    MXC5

    Abstract: SMCG170A 1.5KE200CA SMC MSMCJ170CA
    Text: MSMCJ5.0A thru MSMCJ170CA, e3 and MSMCG5.0A thru MSMCG170CA, e3 SURFACE MOUNT 1500 Watt Transient Voltage Suppressor IRELAND DIVISION APPEARANCE The MSMCJ5.0A-170A or MSMCG5.0CA-170CA series of 1500 W Transient Voltage Suppressors TVSs protects a variety of voltage-sensitive


    Original
    PDF MSMCJ170CA, MSMCG170CA, A-170A 0CA-170CA DO-214AB DO-215AB IEC61000-4-5 DO-215AB DO-214AA) MXC5 SMCG170A 1.5KE200CA SMC MSMCJ170CA

    GENERAL SEMICONDUCTOR MARKING bfm

    Abstract: general semiconductor marking code GFX 9AT1 transzorb marking code GEM BFR 90
    Text: SMCG5.0A thru SMCG188CA www.vishay.com Vishay General Semiconductor Surface Mount TRANSZORB Transient Voltage Suppressors FEATURES • • • • • • • • Low profile package Ideal for automated placement Glass passivated chip junction Available in uni-directional and bi-directional


    Original
    PDF SMCG188CA J-STD-020, AEC-Q101 DO-215AB 2011/65/EU 2002/95/EC. 2002/95/EC 2011/65/EU. 12-Mar-12 GENERAL SEMICONDUCTOR MARKING bfm general semiconductor marking code GFX 9AT1 transzorb marking code GEM BFR 90

    gez F

    Abstract: marking ghm GFZ 51 SMCG14A gfx 77
    Text: SMCG5.0 thru SMCG188CA Vishay General Semiconductor Surface Mount TRANSZORB Transient Voltage Suppressors FEATURES • Low profile package • Ideal for automated placement • Glass passivated chip junction • Available in uni-directional and bi-directional


    Original
    PDF SMCG188CA DO-215AB J-STD-020C, 2002/95/EC 2002/96/EC 18-Jul-08 gez F marking ghm GFZ 51 SMCG14A gfx 77

    GGG 92

    Abstract: general semiconductor marking code GER
    Text: SMCG5.0A thru SMCG188CA www.vishay.com Vishay General Semiconductor Surface Mount TRANSZORB Transient Voltage Supressors FEATURES • Low profile package • Ideal for automated placement • Glass passivated chip junction • Available in uni-directional and bi-directional


    Original
    PDF SMCG188CA DO-215AB J-STD-020, 2011/65/EU 2002/95/EC. 2002/95/EC 2011/65/EU. 12-Mar-12 GGG 92 general semiconductor marking code GER

    Untitled

    Abstract: No abstract text available
    Text: SMCG5.0 thru SMCG188CA Vishay General Semiconductor Surface Mount TRANSZORB Transient Voltage Suppressors FEATURES • Low profile package • Ideal for automated placement • Glass passivated chip junction • Available in uni-directional and bi-directional


    Original
    PDF SMCG188CA DO-215AB J-STD-020C, 2002/95/EC 2002/96/EC 08-Apr-05

    106 35k. 241

    Abstract: marking codes 543 gdt 106 35K Bel 188 bel 188 transistor GGZ 47 ghr 11 SMCG10 SMCJ10C SMCJ10CA
    Text: SMCG5.0 thru 188CA Vishay Semiconductors formerly General Semiconductor Surface Mount TRANSZORB Transient Voltage Suppressors d e d n nge e t x E e Ra g a t l Vo DO-215AB SMCG Cathode Band 0.050 (1.27) Dimensions in inches and (millimeters) 0.280 (7.11)


    Original
    PDF 188CA DO-215AB 08-Apr-05 106 35k. 241 marking codes 543 gdt 106 35K Bel 188 bel 188 transistor GGZ 47 ghr 11 SMCG10 SMCJ10C SMCJ10CA

    0-170A

    Abstract: No abstract text available
    Text: SMCJ5.0 thru SMCJ170CA and SMCG5.0 thru SMCG170CA SURFACE MOUNT 1500 Watt Transient Voltage Suppressor SCOTTSDALE DIVISION APPEARANCE The SMCJ5.0-170A or SMCG5.0-170A series of 1500 W Transient Voltage Suppressors TVSs protects a variety of voltage-sensitive components from


    Original
    PDF SMCJ170CA SMCG170CA DO-214AB DO-215AB IEC61000-4-5 DO-215AB 0-170A

    Untitled

    Abstract: No abstract text available
    Text: SMCG5.0A thru SMCG188CA www.vishay.com Vishay General Semiconductor Surface Mount TRANSZORB Transient Voltage Suppressors FEATURES • • • • • • • • Low profile package Ideal for automated placement Glass passivated chip junction Available in uni-directional and bi-directional


    Original
    PDF SMCG188CA J-STD-020, AEC-Q101 DO-215AB 2002/95/EC. 2002/95/EC 2011/65/EU. JS709A 02-Oct-12

    gez F

    Abstract: general semiconductor marking code GER general semiconductor marking code GFX
    Text: SMCG5.0 thru SMCG188CA Vishay General Semiconductor Surface Mount TRANSZORB Transient Voltage Suppressors FEATURES • Low profile package • Ideal for automated placement • Glass passivated chip junction • Available in uni-directional and bi-directional


    Original
    PDF SMCG188CA J-STD-020, 2002/95/EC 2002/96/EC 2011/65/EU 2002/95/EC. 2011/65/EU. 12-Mar-12 gez F general semiconductor marking code GER general semiconductor marking code GFX

    GENERAL SEMICONDUCTOR MARKING bfm

    Abstract: transzorb marking code GEM GFM 57, TVS bel 188 transistor marking ghm SMCG10 SMCJ10C SMCJ10CA marking BFP marking code GGt
    Text: SMCG5.0 thru 188CA Vishay Semiconductors formerly General Semiconductor Surface Mount TRANSZORB Transient Voltage Suppressors d e d n nge e t x E e Ra g a t l Vo DO-215AB SMCG Cathode Band 0.050 (1.27) Dimensions in inches and (millimeters) 0.280 (7.11)


    Original
    PDF 188CA DO-215AB 50mVp-p 24-Jul-03 GENERAL SEMICONDUCTOR MARKING bfm transzorb marking code GEM GFM 57, TVS bel 188 transistor marking ghm SMCG10 SMCJ10C SMCJ10CA marking BFP marking code GGt

    SMCJ

    Abstract: No abstract text available
    Text: Bi-Directional TVS Part Number TSB 1.5KE82CA CD6293CA 1.5KCD91C 1.5KE91C CD6294C SMCG58C SMCG58CA SMCJ58C SMCJ58CA 1.5KCD91CA 1.5KE91CA CD6294CA SMCG6.0C SMCG6.0CA SMCJS.OC SMCJ6.0CA 1.5KCD100C 1.5KE100C CD6295C SMCG64C SMCG64CA SMCJ64C SMCJ64CA 1.5KCD100CA


    OCR Scan
    PDF TSB-28 SMCJ

    jantx1n6164

    Abstract: No abstract text available
    Text: Transient Voltage Suppressors Part Number JANTXV1N6164 JANTXV1N6164US 1N6164A 1N6164AUS JAN1N6164A JAN1N6164AUS JANTX1N6164A JANTX1N6164AUS JANTXV1N6164A JANTXV1N6164AUS SP6164A LC64 LC64A LCE64 LCE64A SMCG64 SMCG64A SMCJ64 SMCJ64A 1N6060A JAN1N6060A JANTX1N6060A


    OCR Scan
    PDF DO-13 jantx1n6164

    gex 15a

    Abstract: GEZ 55A
    Text: GENERAL SEMICONDUCTOR 3918590 G EN ER AL ~^5 95D SEMICONDUCTOR DE I Bci l ñ S ,i D 000E033 02033 SURFACE MOUNT ^ General ^ Semiconductor • Industries, Inc, T ra n s Z o rb SMC SERIES 5.0 THRU 170.0 VOLTS 1500 WATTS 5 Q U H H E n CD M PHN Y UNIDIRECTIONAL


    OCR Scan
    PDF 000E033 10/1000us) gex 15a GEZ 55A

    Untitled

    Abstract: No abstract text available
    Text: SMCG AND SMCJ5.0 THRU 170CA SURFACE MOUNT T r a n s Z o r b TRANSIENT VOLTAGE SUPPRESSOR Stand-off Voltage - 5.0 - 170 Volts DO-214AB Peak Pulse Power - 1500 Watts _ FEATURES_ MODIFIED J-BEND Plastic package has Underwriters Laboratory Flammability Classification 94V-0


    OCR Scan
    PDF 170CA DO-214AB

    KL SN 102 94v-0

    Abstract: diode EGP 30D circuit diagram of 5kw smps full bridge MELF ZENER DIODE color bands blue y-349 diode GI 2W06G DO-213AB smd diode color marking code 6j 507 SMD TRANSISTOR smd diode marking g2a zener Marking BJ9
    Text: General Instrument / Power Semiconductor Division / I * r .jr > / INTRODUCTION General Instrument Corporation is a world leader in developing technology, systems and product solutions for the interactive delivery o f video and data. G l’s success results


    OCR Scan
    PDF