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

    100D08 Search Results

    SF Impression Pixel

    100D08 Price and Stock

    TDK Corporation CGA3E2C0G1H100D080AA

    CAP CER 10PF 50V C0G 0603
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey CGA3E2C0G1H100D080AA Reel 164,000 4,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.0233
    Buy Now
    Avnet Americas CGA3E2C0G1H100D080AA Ammo Pack 16 Weeks, 4 Days 1
    • 1 $0.137
    • 10 $0.137
    • 100 $0.035
    • 1000 $0.035
    • 10000 $0.035
    Buy Now
    CGA3E2C0G1H100D080AA Reel 24 Weeks 4,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.01562
    Buy Now
    Mouser Electronics CGA3E2C0G1H100D080AA 46,561
    • 1 $0.14
    • 10 $0.052
    • 100 $0.036
    • 1000 $0.031
    • 10000 $0.02
    Buy Now
    Newark CGA3E2C0G1H100D080AA Reel 24,000 4,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.02
    Buy Now
    CGA3E2C0G1H100D080AA Cut Tape 7,970 1
    • 1 $0.021
    • 10 $0.021
    • 100 $0.021
    • 1000 $0.021
    • 10000 $0.021
    Buy Now
    TTI CGA3E2C0G1H100D080AA Reel 4,000 4,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.0192
    Buy Now
    TME CGA3E2C0G1H100D080AA 1,970 1
    • 1 $0.1161
    • 10 $0.072
    • 100 $0.0428
    • 1000 $0.0267
    • 10000 $0.0185
    Buy Now
    Avnet Abacus CGA3E2C0G1H100D080AA Reel 29 Weeks 4,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Buy Now
    Avnet Asia CGA3E2C0G1H100D080AA 20,000 24 Weeks 4,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.00978
    Buy Now
    Chip One Stop CGA3E2C0G1H100D080AA Cut Tape 3,800
    • 1 -
    • 10 -
    • 100 $0.0444
    • 1000 $0.029
    • 10000 $0.0289
    Buy Now

    TDK Corporation C1608C0G1H100D080AA

    CAP CER 10PF 50V C0G 0603
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey C1608C0G1H100D080AA Reel 84,000 4,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.01787
    Buy Now
    Mouser Electronics C1608C0G1H100D080AA 10,800
    • 1 $0.11
    • 10 $0.045
    • 100 $0.027
    • 1000 $0.02
    • 10000 $0.016
    Buy Now
    Newark C1608C0G1H100D080AA Cut Tape 10,841 10
    • 1 -
    • 10 $0.044
    • 100 $0.026
    • 1000 $0.026
    • 10000 $0.026
    Buy Now
    Bristol Electronics C1608C0G1H100D080AA 4,109
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Get Quote
    C1608C0G1H100D080AA 2,000 45
    • 1 -
    • 10 -
    • 100 $0.1125
    • 1000 $0.0338
    • 10000 $0.0338
    Buy Now
    TTI C1608C0G1H100D080AA Reel 104,000 4,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.0135
    Buy Now
    TME C1608C0G1H100D080AA 4,817 1
    • 1 $0.0984
    • 10 $0.0603
    • 100 $0.0254
    • 1000 $0.0178
    • 10000 $0.0131
    Buy Now
    Velocity Electronics C1608C0G1H100D080AA 3,914
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Get Quote
    Avnet Abacus C1608C0G1H100D080AA Reel 29 Weeks 4,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Buy Now
    Chip One Stop C1608C0G1H100D080AA Cut Tape 510
    • 1 -
    • 10 -
    • 100 $0.0251
    • 1000 $0.0179
    • 10000 $0.0179
    Buy Now

    TDK Corporation C1608C0G2A100D080AA

    CAP CER 10PF 100V C0G 0603
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey C1608C0G2A100D080AA Digi-Reel 11,384 1
    • 1 $0.14
    • 10 $0.08
    • 100 $0.0483
    • 1000 $0.03153
    • 10000 $0.03153
    Buy Now
    C1608C0G2A100D080AA Cut Tape 11,384 1
    • 1 $0.14
    • 10 $0.08
    • 100 $0.0483
    • 1000 $0.03153
    • 10000 $0.03153
    Buy Now
    C1608C0G2A100D080AA Reel 8,000 4,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.0233
    Buy Now
    Avnet Americas C1608C0G2A100D080AA Reel 16 Weeks 4,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.01944
    Buy Now
    Mouser Electronics C1608C0G2A100D080AA 10,934
    • 1 $0.13
    • 10 $0.056
    • 100 $0.036
    • 1000 $0.028
    • 10000 $0.02
    Buy Now
    Newark C1608C0G2A100D080AA Cut Tape 10
    • 1 -
    • 10 $0.058
    • 100 $0.038
    • 1000 $0.038
    • 10000 $0.038
    Buy Now
    TME C1608C0G2A100D080AA 4,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.0198
    Get Quote
    Avnet Abacus C1608C0G2A100D080AA Reel 41 Weeks 4,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Buy Now

    TDK Corporation C1608NP01H100D080AA

    CAP CER 10PF 50V NP0 0603
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey C1608NP01H100D080AA Cut Tape 11,102 1
    • 1 $0.17
    • 10 $0.095
    • 100 $0.0574
    • 1000 $0.03785
    • 10000 $0.03785
    Buy Now
    C1608NP01H100D080AA Digi-Reel 11,102 1
    • 1 $0.17
    • 10 $0.095
    • 100 $0.0574
    • 1000 $0.03785
    • 10000 $0.03785
    Buy Now
    C1608NP01H100D080AA Reel 8,000 4,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.02824
    Buy Now
    Avnet Americas C1608NP01H100D080AA Reel 172,000 16 Weeks 4,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.00278
    Buy Now
    Mouser Electronics C1608NP01H100D080AA 10,394
    • 1 $0.16
    • 10 $0.066
    • 100 $0.038
    • 1000 $0.035
    • 10000 $0.025
    Buy Now
    TME C1608NP01H100D080AA 4,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.0211
    Get Quote
    Avnet Abacus C1608NP01H100D080AA Reel 29 Weeks 4,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Buy Now

    TDK Corporation C1608CH2A100D080AA

    CAP CER 10PF 100V CH 0603
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey C1608CH2A100D080AA Digi-Reel 5,568 1
    • 1 $0.14
    • 10 $0.08
    • 100 $0.0483
    • 1000 $0.03153
    • 10000 $0.03153
    Buy Now
    C1608CH2A100D080AA Cut Tape 5,568 1
    • 1 $0.14
    • 10 $0.08
    • 100 $0.0483
    • 1000 $0.03153
    • 10000 $0.03153
    Buy Now
    C1608CH2A100D080AA Reel 4,000 4,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.02554
    Buy Now
    Avnet Americas C1608CH2A100D080AA Reel 36 Weeks 4,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.01944
    Buy Now
    Mouser Electronics C1608CH2A100D080AA 4,963
    • 1 $0.14
    • 10 $0.056
    • 100 $0.036
    • 1000 $0.028
    • 10000 $0.021
    Buy Now

    100D08 Datasheets (8)

    Part ECAD Model Manufacturer Description Curated Datasheet Type PDF
    100D0896 Daico Industries DAICO_Phase Shifters Original PDF
    100D0896-60MHZ-BNC Daico Industries Phase Shifter 6 Section Original PDF
    100D0896-60MHZ-SMA Daico Industries Phase Shifter 6 Section Original PDF
    100D0896-60MHZ-TNC Daico Industries Phase Shifter 6 Section Original PDF
    100D0898 Daico Industries DAICO_Phase Shifters Original PDF
    100D0898-60MHZ-BNC Daico Industries Phase Shifter 8 Section Original PDF
    100D0898-60MHZ-SMA Daico Industries Phase Shifter 8 Section Original PDF
    100D0898-60MHZ-TNC Daico Industries Phase Shifter 8 Section Original PDF

    100D08 Datasheets Context Search

    Catalog Datasheet MFG & Type Document Tags PDF

    Untitled

    Abstract: No abstract text available
    Text: F EAT U R E S MODEL NO. 100D08 9 8 30 - 300 MHz User Selectable Center Frequency 1.41° LSB, 358.59° Range TTL Driver SMA, BNC, or TNC Connectors 8 BIT P h a se Sh if te r 8 Section PART IDENTIFICATION 11.50 ±.03 .375 ±.03 180° 10.75 J1 CONNECTOR, 15 PIN


    Original
    100D08 M24308/3-2 100D0898 PDF

    100D0896

    Abstract: BNC T connectors phase shifter "Phase Shifter" transistor 375
    Text: MODEL NUMBER 100D0896 Phase Shifter 6 Section FEATURES • 30-300 MHz • 5.625° LSB, 354.375° Range • TTL Driver • SMA, BNC, or TNC Connectors 6 BIT DAICO Industries 310.507.3242 • FAX 310.507.5701 • www.daico.com 263


    Original
    100D0896 100D0896 BNC T connectors phase shifter "Phase Shifter" transistor 375 PDF

    100D0898

    Abstract: phase shifter "Phase Shifter" TNC connectors
    Text: MODEL NUMBER 100D0898 Phase Shifter 8 Section FEATURES • 30-300 MHz • 1.4° LSB, 358.6° Range • TTL Driver • SMA, BNC, or TNC Connectors 8 BIT DAICO Industries 310.507.3242 • FAX 310.507.5701 • www.daico.com 265


    Original
    100D0898 100D0898 phase shifter "Phase Shifter" TNC connectors PDF

    M24308/3-2

    Abstract: 100D0898
    Text: F EAT U R E S MODEL NO. 100D08 9 8 30 - 300 MHz 1.4° LSB, 358.6° Range TTL Driver SMA, BNC, or TNC Connectors 8 BIT P h a se Sh if te r 8 Section PART IDENTIFICATION 14.50 ±.03 .375 ±.03 180° 13.75 J1 CONNECTOR, 15 PIN M24308/3-2 .50 ±.03 J1 2.813°


    Original
    100D08 M24308/3-2 100D0898 M24308/3-2 PDF

    M24308/3-2

    Abstract: 100D0896
    Text: F E AT U R E S MODEL NO. 100D08 96 30 - 300 MHz 5.625° LSB, 354.375° Range TTL Driver SMA, BNC, or TNC Connectors 6 BIT P h a se Sh if te r 6 Section PART IDENTIFICATION 11.50 ±.03 .375 ±.03 10.75 22.5° CONNECTOR, 15 PIN M24308/3-2 .50 ±.03 11.25° 5.625°


    Original
    100D08 M24308/3-2 100D0896 M24308/3-2 PDF

    Untitled

    Abstract: No abstract text available
    Text: F E AT U R E S MODEL NO. 100D08 96 30 - 300 MHz User Selectable Center Frequency 5.625° LSB, 354.375° Range TTL Driver SMA, BNC, or TNC Connectors 6 BIT P h a se Sh if te r 6 Section PART IDENTIFICATION 11.50 ±.03 .375 ±.03 10.75 22.5° CONNECTOR, 15 PIN


    Original
    100D08 M24308/3-2 100D0896 PDF

    Untitled

    Abstract: No abstract text available
    Text: & FEA TU R ES • 3 0 -3 0 0 MHz ■ User Selectable Center Frequency ■ 5.625° LSB, 354.375° Range MODEL NO. 100D0896 6 Section Phase Shifter ■ TTL Driver ■ SMA, BNC, or TNC Connectors 6 BIT I I > -J - TYPICAL PERFORMANCE GUARANTEED PERFORMANCE AT 25° C


    OCR Scan
    100D0896 C0NTR01 100D0896 PDF

    Untitled

    Abstract: No abstract text available
    Text: FEATURES • 3 0 -3 0 0 MHz -3 ■ User Selectable Center Frequency t c MODEL NO. 100D0898 ■ 1.41° LSB, 358.59° Range 8 Section Phase Shifter ■ t t l Driver ■ SMA, BNC, or TNC Connectors 8 BI T TYPICAL PERFORMANCE GUARANTEED PERFORMANCE AT 25° C PARAMETER


    OCR Scan
    100D0898 IANDW101H PDF

    relay 5 volt - SPST

    Abstract: DA0035 DA0775 DA0784-1 DA0786 DS0028 DS0052 DS0073 DS0778 P35-4101
    Text: DAICO INDUSTRIES INC blE D • Eb04TEQ OQQlfllb 552 ■ DAI FEATURES ■ 0.5 - 3.5 GHz Frequency Range ■ Self Biased. No Separate Gate Supply Req. ■ +22 dBm Output Power Capability ■ Matched to 50 Q .400 MAX BOND PAD CONFIGURATION — .21 — • .180 SQ


    OCR Scan
    Eb04TEQ P35-4101 DS0990 DA0769 DA0996 relay 5 volt - SPST DA0035 DA0775 DA0784-1 DA0786 DS0028 DS0052 DS0073 DS0778 P35-4101 PDF

    DA0035

    Abstract: DA0775 DA0784-1 DA0786 DS0028 DS0052 DS0073 DS0778 P35-4100 P35-4100-0
    Text: D A I C O I N D U S T R I E S INC tl E D DAI E b O ^ E D OQOlfilS bib FEATURES • 0.05 - 3.5 GHz Frequency Range ■ ■ Flat Frequency Response With Direct Gain Control +22 dBm Output Power Capability ■ Matched to 50 Q Æ mm 5% äti'is iS «®sms: .400 MAX


    OCR Scan
    P35-4100 DS0990 DA0769 DA0996 DA0035 DA0775 DA0784-1 DA0786 DS0028 DS0052 DS0073 DS0778 P35-4100 P35-4100-0 PDF

    Untitled

    Abstract: No abstract text available
    Text: DAICO I N D U S T R I E S INC tlE D DAI Eti04TEQ OGOlfllb 552 FEATURES • 0.5 - 3.5 GHz Frequency Range Self Biased. No Separate Gate Supply Req. +22 dBm Output Power Capability Matched to 50 Q .400 MAX BOND PAD CONFIGURATION — .21 — - .180 SQ rfr; .0 5 0 |


    OCR Scan
    Eti04TEQ D4T50 PDF

    Untitled

    Abstract: No abstract text available
    Text: Bi-Phase Modulators • +17 dBm • Broadband • Low Insertion Loss • Low Current • Full Military Screening Available See Page 320 Phase Shifters • GaAs MMIC, PIN Diode, Relay Types DAICO INDUSTRIES • MIC & Connectorized • Full Military Screening Available


    OCR Scan
    DBP0938 DBP0738 DPMB9058 DPS52181 DP0891 DP0921 100D0896 100D0898 DPS89032 DPS89082 PDF

    Untitled

    Abstract: No abstract text available
    Text: FEA TU R ES • 3 0 -3 0 0 MHz ■ User Selectable Center Frequency ■ 5.625° LSB, 354.375° Range ■ TTL Driver ■ SMA, BNC, or TNC Connectors G BIT | “ - TYPICAL PERFORMANCE GUARANTEED PERFORMANCE AT 25° C PARAMETER MIN OPERATING FREQUENCY TYP DC CURRENT


    OCR Scan
    100D0896 PDF

    PLA relay

    Abstract: ds0097 pla relay 8 pin 9 v dc
    Text: DAICO INDUSTRIES INC blE D • EhD4T5D □□□1S37 537 ■ DAI FEATURES J ■ 10-3000 MHz ■ ■ -30 to -10 dBm Dynamic Range Adjustable Threshold Level ■ ■ Stable Over Temperature See DTD01939 for T0-8 Version MODEL NO. DTD05039 tH r Threshold Detector


    OCR Scan
    DTD01939 DTD05039 04T20 PLA relay ds0097 pla relay 8 pin 9 v dc PDF

    Untitled

    Abstract: No abstract text available
    Text: blE D DAICO INDUSTRIES INC 2b04T20 OOOlfll? 4TT DAI FEA TU R ES • 0.05 - 3.0 GHz Frequency Range ■ 18 dB Gain ■ 35 dB Reverse Isolation ■ +13 dB Output Power Capability ■ Cascadable ■ Matched to 50 Q .400 M A X — .21 — .180 S Q B O N D P A D C O N FIG U R A T IO N


    OCR Scan
    2b04T20 PDF

    ceramic attenuator MHz

    Abstract: No abstract text available
    Text: DAICO INDUSTRIES INC blE D • ZbOM^O 000153 3 340 ■ DAI FEATURES ■ 10-3000 MHz ^3 ■ -30 to -10 dBm Dynamic Range t* } ■ Adjustable Threshold Level ■ Stable Over Temperature ■ See DTD05039 for Surface Mount Version MODEL NO. DTD01939 Threshold Detector


    OCR Scan
    DTD05039 DTD01939 04T20 ceramic attenuator MHz PDF

    5V SPST RELAY

    Abstract: ceramic attenuator MHz TTL transfer switch diode daico SPST RELAY 2 pin flange RF termination 50 AT-15 DA0035 DA0775 8 PIN pin diode attenuator DA0786
    Text: DAICO INDUSTRIES INC blE D • 0001b77 OT1 ■ FEATURES ■ 1 -250 MHz ■ One Watt Power Handling ■ Very High Intercept Points ■ Low Insertion Loss & DAI MODEL NO. DS0800 PIN Diode SP2T RF2 7 RF COM RF1 1 11 A ô 3 +5V 5 8 -15V +15V 9 4 CONT " 10 12 13 14


    OCR Scan
    0001b77 DS0800 DS0990 DA0769 DA0996 5V SPST RELAY ceramic attenuator MHz TTL transfer switch diode daico SPST RELAY 2 pin flange RF termination 50 AT-15 DA0035 DA0775 8 PIN pin diode attenuator DA0786 PDF

    X band attenuator

    Abstract: 5V SPST RELAY P35-1110 gaas fet gm pin s for 5V DPDT RELAY GEC Marconi DA0035 DA0784-1 DA0786 DS0052
    Text: DAICO INDUSTRIES INC blE D • ZbDMTEO 0001fl3D *122 ■ DAI FEATURES ■ General Purpose Amplifier In PIN FET Receiver Clï ■ Transim pedance Amplifier For W ide Band PIN FE T Receiver ■ High Gm, Typically 45 mS ■ Low G ate Leakage Current, Typically 10nA At -5 Volts


    OCR Scan
    0001fl3D p35-1110 DS0990 DA0769 DA0996 X band attenuator 5V SPST RELAY P35-1110 gaas fet gm pin s for 5V DPDT RELAY GEC Marconi DA0035 DA0784-1 DA0786 DS0052 PDF

    9 Volt DPDT Relay

    Abstract: t1l 119 DA0035 DA0775 DA0784-1 DA0786 DS0028 DS0052 DS0073 DS0778
    Text: DAICO INDUSTRIES blE D INC 2b04T20 OOOlfll? 4TT DAI FEA TU R ES • 0.05 - 3.0 GHz Frequency Range ■ 18 dB Gain ■ 35 dB Reverse Isolation ■ +13 dB Output Power Capability ■ Cascadable ■ Matched to 50 Q .400 M A X — .21 — .180 S Q B O N D P A D C O N FIG U R A T IO N


    OCR Scan
    P35-4104 DS0990 DA0769 DA0996 9 Volt DPDT Relay t1l 119 DA0035 DA0775 DA0784-1 DA0786 DS0028 DS0052 DS0073 DS0778 PDF

    DS0602

    Abstract: 100D0688 DA0795 DA0285 CDP0827 ceramic attenuator MHz DP0560 DA0035 DA0775 DA0784-1
    Text: DAICO INDUSTRIES INC blE D • EhDHTSD □□□1S37 507 ■ DAI FEATURES MODEL NO. DTD05039 ■ 10-3000 MHz ■ -30 to -10 dBm Dynamic Range ■ Adjustable Threshold Level ■ Stable Over Temperature ■ See D T D 0 1 939 for T0-8 Version & Threshold Detector


    OCR Scan
    lfl37 DTD05039 DTD01939 DS0990 DA0769 DA0996 DS0602 100D0688 DA0795 DA0285 CDP0827 ceramic attenuator MHz DP0560 DA0035 DA0775 DA0784-1 PDF

    DECO RELAY

    Abstract: phase shifter ds0097 B 240 MIC
    Text: blE D DAICO I N D U S T R I E S INC • a t O M IS D OOOlflSS flSb ■ DAI FEATURES MODEL NO P35-4160-0 ■ 3 - 6 GHz Frequency Range d r ■ 20 dB Gain ■ Low Noise Figure < 3 dB GaAs MMIC Low Noise ■ Low Input VSW R 1.8/1 ■ +17 dBm Output Power Capability


    OCR Scan
    P35-4160-0 D4T50 DECO RELAY phase shifter ds0097 B 240 MIC PDF

    5BD4

    Abstract: DA0930 5bd4ciao 10 db attenuator Voltage Controlled Attenuator DA0035 DA0775 DA0784-1 DA0786 DA0975
    Text: DAICO INDUSTRIES INC blE D • 5bD4TS0 00017^8 707 ■ DAI FEA TU RES ■ 10-1000 MHz ■ 75Q. Impedance ■ 28 dB Range ■ TO-8 Package ■ Low Cost +15V Ô CONT VOLTAGE -XX = .02 .xxx = .010 1 I TYPICAL PERFORMANCE - GUARANTEED PERFORMANCE A T 25° C PARAM ETER


    OCR Scan
    DA0975 DS0990 DA0769 DA0996 5BD4 DA0930 5bd4ciao 10 db attenuator Voltage Controlled Attenuator DA0035 DA0775 DA0784-1 DA0786 DA0975 PDF

    Untitled

    Abstract: No abstract text available
    Text: DAICO INDUSTRIES INC blE D • ZbDMTEO 0001fl3D *122 ■ DAI FEATURES ■ Transim pedance Amplifier For W ide Band PIN FE T Receiver ■ High Gm, Typically 45 mS ■ Low G ate Leakage Current, Typically 10nA At -5 Volts ■ No Selection Required ■ Low Cgs, Typically 0.4 pF


    OCR Scan
    0001fl3D P35-1110 D4T50 PDF

    Biphase

    Abstract: No abstract text available
    Text: Bi-Phase Modulators +17 dBm Broadband Low Insertion Loss Low Current Full Military Screening Available See Page 270 Phase Shifters GaAs MMIC, PIN Diode, Relay Types MIC & Connectorized Full Military Screening Available (See Page 270) DAICO INDUSTRIES Bi-PHASE MODULATOR/PHASE SHIFTER SPECIFICATION TABLE


    OCR Scan
    DBP0938 DBP0738 DPMB9O50 DP0881 CDP0827 DP0891 DP0921 Biphase PDF