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

    SKHU Search Results

    SF Impression Pixel

    SKHU Price and Stock

    Alpine Electronics (Asia) Ltd SKHUALE010

    SWITCH TACTILE SPST-NO 0.05A 12V
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey SKHUALE010 Reel 12,000 3,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.4242
    Buy Now
    SKHUALE010 Cut Tape 1,776 1
    • 1 $0.82
    • 10 $0.788
    • 100 $0.6393
    • 1000 $0.49995
    • 10000 $0.49995
    Buy Now
    SKHUALE010 Digi-Reel 1
    • 1 $0.82
    • 10 $0.788
    • 100 $0.6393
    • 1000 $0.49995
    • 10000 $0.49995
    Buy Now
    Avnet Americas SKHUALE010 Reel 20 Weeks 3,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.12852
    Buy Now
    Mouser Electronics SKHUALE010 2,667
    • 1 $0.82
    • 10 $0.737
    • 100 $0.582
    • 1000 $0.5
    • 10000 $0.383
    Buy Now
    Verical SKHUALE010 1,828 140
    • 1 -
    • 10 -
    • 100 -
    • 1000 $0.5233
    • 10000 $0.5233
    Buy Now
    Newark SKHUALE010 Cut Tape 2,883 10
    • 1 $0.707
    • 10 $0.707
    • 100 $0.707
    • 1000 $0.707
    • 10000 $0.707
    Buy Now
    Avnet Abacus SKHUALE010 Reel 15,000 19 Weeks 3,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Buy Now
    Chip1Stop SKHUALE010 Cut Tape 2,637
    • 1 -
    • 10 $0.505
    • 100 $0.368
    • 1000 $0.307
    • 10000 $0.307
    Buy Now
    SKHUALE010 Cut Tape 819
    • 1 -
    • 10 $0.357
    • 100 $0.29
    • 1000 $0.267
    • 10000 $0.267
    Buy Now
    CoreStaff Co Ltd SKHUALE010 1,829
    • 1 $0.428
    • 10 $0.377
    • 100 $0.365
    • 1000 $0.358
    • 10000 $0.358
    Buy Now

    Alpine Electronics (Asia) Ltd SKHUAME010

    SWITCH TACTILE SPST-NO 0.05A 12V
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey SKHUAME010 Reel 6,000 3,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.4242
    Buy Now
    SKHUAME010 Cut Tape 2,184 1
    • 1 $0.82
    • 10 $0.788
    • 100 $0.6393
    • 1000 $0.49995
    • 10000 $0.49995
    Buy Now
    SKHUAME010 Digi-Reel 1
    • 1 $0.82
    • 10 $0.788
    • 100 $0.6393
    • 1000 $0.49995
    • 10000 $0.49995
    Buy Now
    Avnet Americas SKHUAME010 Reel 20 Weeks 3,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.12852
    Buy Now
    Mouser Electronics SKHUAME010 3,291
    • 1 $0.52
    • 10 $0.502
    • 100 $0.454
    • 1000 $0.429
    • 10000 $0.375
    Buy Now
    Verical SKHUAME010 3,000 140
    • 1 -
    • 10 -
    • 100 -
    • 1000 $0.4366
    • 10000 $0.4366
    Buy Now
    Newark SKHUAME010 Cut Tape 3,214 10
    • 1 $0.39
    • 10 $0.39
    • 100 $0.39
    • 1000 $0.39
    • 10000 $0.39
    Buy Now
    Avnet Abacus SKHUAME010 Reel 51,000 19 Weeks 3,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Buy Now
    Avnet Asia SKHUAME010 10 Weeks 3,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Get Quote
    Chip1Stop SKHUAME010 Cut Tape 1,019
    • 1 -
    • 10 $0.204
    • 100 $0.191
    • 1000 $0.183
    • 10000 $0.183
    Buy Now
    SKHUAME010 Cut Tape 826
    • 1 -
    • 10 $0.235
    • 100 $0.22
    • 1000 $0.214
    • 10000 $0.214
    Buy Now
    CoreStaff Co Ltd SKHUAME010 92
    • 1 $0.736
    • 10 $0.377
    • 100 $0.365
    • 1000 $0.358
    • 10000 $0.358
    Buy Now

    Alpine Electronics (Asia) Ltd SKHUAKE010

    SWITCH TACTILE SPST-NO 0.05A 12V
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey SKHUAKE010 Reel 6,000 3,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.4242
    Buy Now
    SKHUAKE010 Cut Tape 5,428 1
    • 1 $0.82
    • 10 $0.788
    • 100 $0.6393
    • 1000 $0.49995
    • 10000 $0.49995
    Buy Now
    SKHUAKE010 Digi-Reel 1
    • 1 $0.82
    • 10 $0.788
    • 100 $0.6393
    • 1000 $0.49995
    • 10000 $0.49995
    Buy Now
    Avnet Americas SKHUAKE010 Reel 20 Weeks 3,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Get Quote
    Mouser Electronics SKHUAKE010 3,841
    • 1 $0.82
    • 10 $0.735
    • 100 $0.582
    • 1000 $0.5
    • 10000 $0.382
    Buy Now
    Verical SKHUAKE010 3,000 140
    • 1 -
    • 10 -
    • 100 -
    • 1000 $0.5233
    • 10000 $0.5078
    Buy Now
    Newark SKHUAKE010 Cut Tape 12,662 10
    • 1 $0.876
    • 10 $0.876
    • 100 $0.876
    • 1000 $0.876
    • 10000 $0.876
    Buy Now
    SKHUAKE010 Reel 3,000
    • 1 $0.184
    • 10 $0.184
    • 100 $0.184
    • 1000 $0.184
    • 10000 $0.184
    Buy Now
    Avnet Abacus SKHUAKE010 Reel 19 Weeks 15,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Buy Now
    Avnet Asia SKHUAKE010 10 Weeks 4,800
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Get Quote
    Chip1Stop SKHUAKE010 Cut Tape 2,624
    • 1 -
    • 10 $0.481
    • 100 $0.377
    • 1000 $0.324
    • 10000 $0.324
    Buy Now
    CoreStaff Co Ltd SKHUAKE010 3,000
    • 1 $0.428
    • 10 $0.377
    • 100 $0.365
    • 1000 $0.358
    • 10000 $0.358
    Buy Now
    SKHUAKE010 77
    • 1 $0.428
    • 10 $0.377
    • 100 $0.365
    • 1000 $0.358
    • 10000 $0.358
    Buy Now

    Alpine Electronics (Asia) Ltd SKHUBHE010

    SWITCH TACTILE SPST-NO 0.05A 12V
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey SKHUBHE010 Reel 3,000 3,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.56449
    Buy Now
    SKHUBHE010 Cut Tape 2,852 1
    • 1 $1.09
    • 10 $1.045
    • 100 $0.8488
    • 1000 $0.66902
    • 10000 $0.66902
    Buy Now
    SKHUBHE010 Digi-Reel 1
    • 1 $1.09
    • 10 $1.045
    • 100 $0.8488
    • 1000 $0.66902
    • 10000 $0.66902
    Buy Now
    Avnet Americas SKHUBHE010 Reel 20 Weeks 3,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Get Quote
    Mouser Electronics SKHUBHE010 5,730
    • 1 $1.09
    • 10 $0.571
    • 100 $0.518
    • 1000 $0.518
    • 10000 $0.517
    Buy Now
    Verical SKHUBHE010 6,000 110
    • 1 -
    • 10 -
    • 100 -
    • 1000 $0.665
    • 10000 $0.628
    Buy Now
    SKHUBHE010 516 110
    • 1 -
    • 10 -
    • 100 -
    • 1000 $0.6875
    • 10000 $0.6875
    Buy Now
    Newark SKHUBHE010 Cut Tape 973 10
    • 1 -
    • 10 $0.672
    • 100 $0.539
    • 1000 $0.539
    • 10000 $0.539
    Buy Now
    Avnet Abacus SKHUBHE010 Reel 12,000 19 Weeks 3,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Buy Now
    Chip1Stop SKHUBHE010 Cut Tape 894
    • 1 -
    • 10 $0.316
    • 100 $0.314
    • 1000 $0.31
    • 10000 $0.31
    Buy Now
    CoreStaff Co Ltd SKHUBHE010 6,000
    • 1 $0.556
    • 10 $0.474
    • 100 $0.463
    • 1000 $0.455
    • 10000 $0.455
    Buy Now
    SKHUBHE010 556
    • 1 $0.556
    • 10 $0.474
    • 100 $0.463
    • 1000 $0.455
    • 10000 $0.455
    Buy Now

    Alpine Electronics (Asia) Ltd SKHUQHE010

    Switch Tactile N.O. SPST Round Button J-Bend 0.05A 12VDC 1.57N SMD Embossed T/R - Tape and Reel (Alt: SKHUQHE010)
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    Avnet Americas SKHUQHE010 Reel 20 Weeks 3,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Get Quote
    Verical SKHUQHE010 200 91
    • 1 -
    • 10 -
    • 100 $0.9047
    • 1000 $0.9047
    • 10000 $0.9047
    Buy Now
    Avnet Abacus SKHUQHE010 Reel 19 Weeks 15,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Buy Now
    Chip1Stop SKHUQHE010 Cut Tape 5,600
    • 1 -
    • 10 $0.334
    • 100 $0.313
    • 1000 $0.302
    • 10000 $0.302
    Buy Now
    CoreStaff Co Ltd SKHUQHE010 200
    • 1 $0.841
    • 10 $0.706
    • 100 $0.556
    • 1000 $0.554
    • 10000 $0.554
    Buy Now
    SKHUQHE010 29
    • 1 $0.841
    • 10 $0.706
    • 100 $0.556
    • 1000 $0.554
    • 10000 $0.554
    Buy Now

    SKHU Datasheets (3)

    Part ECAD Model Manufacturer Description Curated Type PDF
    SKHUAD ALPS Electromechanical Switch, TACT Switch Original PDF
    SKHUAFE010 ALPS Electromechanical Switch, 6.2x6.5mm Square Type TACT Switch Original PDF
    SKHUPBE010 ALPS Electromechanical Switch, 6.2x6.5mm TACT Switch (SMD), Wide Varieties Such Dust Protection Type Suitable For High Density Mounting Original PDF

    SKHU Datasheets Context Search

    Catalog Datasheet MFG & Type PDF Document Tags

    Untitled

    Abstract: No abstract text available
    Text: TACT SwitchTM List of Varieties Sharp Feeling Type SKHU Series Detector SKSC SKRE SKRT SKRV SKRH SKQU SKRG SKQK SKQN SKRC Photo Push Type Surface mount Slide Dust–proof type is available Features Encoders Operating direction Rotary Low–profile Horizontal type


    Original
    PDF

    SKHUBHE010

    Abstract: SKHUAKE010 2.5mm "Slide Switch" 2.5mm "Slide Switch" push
    Text: TACT SwitchTM G 6.2 6.3mm Surface Mount Type SKHU Series A wide variety of products including dust-proof type. Detector Push Slide Rotary Encoders Power Product Line Vertical Type Product No. Operating Operating Travel Rating Rating Operating life Initial contact Stem


    Original
    PDF SKHUAKE010 SKHUALE010 SKHUAME010 000cycles 350max. EC-19S-8 SKHUBHE010 SKHUAKE010 2.5mm "Slide Switch" 2.5mm "Slide Switch" push

    SKHU

    Abstract: No abstract text available
    Text: 6.2x6.3mm Type Surface Mount SKHU Series A wide variety of products including dust proof type. Applications FP-TV, DVD player PC & peripherals Product Line * For details information, click on the 'part number' Vertical type Part number Type Operating force


    Original
    PDF SKHUAKE010 SKHUALE010 SKHUAME010 SKHUBHE010 SKHUQHE010 SKHUQGE010 SKHU

    SKHUAME010 datasheet

    Abstract: skhubhe010 SKHUAKE010 SKRAAQ SKRV SKHUALE010 SKHUQ
    Text: TACT SwitchTM 6.2x6.5mm Surface mount type SKHU Series A wide variation of products including dust proof type. Features Detector ● Push ● Slide ● ● Rotary ● 6.2G6.5mm dimensions with 2.5 - 3.1mm height suitable for high density mounting. Reflow solderable.


    Original
    PDF SKHUAKE010 330mm SKHUAME010 datasheet skhubhe010 SKHUAKE010 SKRAAQ SKRV SKHUALE010 SKHUQ

    Untitled

    Abstract: No abstract text available
    Text: タクトスイッチR バラエティ一覧 シャープフィーリングタイプ SKHU シリーズ 検出 SKSC SKRE SKRT SKRV SKRH SKQU SKRG SKQK SKQN SKRC 写真 プッシュ タイプ 表面実装 スライド 防塵タイプ 有り 特長 薄型・


    Original
    PDF

    TACT SWITCH

    Abstract: No abstract text available
    Text: TACT SwitchTM 产品系列一览 敏感型 系列 检测 SKHU SKSC SKRE SKRT SKRV SKRH SKQU SKRG SKQK SKQN SKRC 照片 按动 型 表面贴装 径向 滑动 特长 旋转 编码器 操 作 方 向 有防尘型 薄型•横型 横型 ¡ 竖型 横型 ¡ ¡ ¡


    Original
    PDF 10Hz/, TACT SWITCH

    Untitled

    Abstract: No abstract text available
    Text: 22/11/2013 SKHU Series - Basic information ALPS Manufacturer of Electronic Components/Parts Catalog 6.2x6.3mm T y pe Surfa ce Mount SKHU Series Det a il Top push type Part number SKHUALE010 Type Surface mount Operating force 1.57N Operating direction Top push


    Original
    PDF SKHUALE010 10Hz/min. /E/HTML/Tact/SurfaceMount/SKHU/SKHUALE010 330mm

    Untitled

    Abstract: No abstract text available
    Text: 6.2x6.5mm TACT Switch SMD SKHU Series Wide varieties such dust protection type suitable for high density mounting. Power Car Use Push Slide Rotary Encoders Detector Features ● ● ● ● ● Applications 6.2×6.5mm dimension with 2.5 to 3.1mm height is suitable


    Original
    PDF

    SKHUBHE010

    Abstract: SKHUAKE010 SKHUPLE010 2V625
    Text: TACT SwitchTM 6.2x6.3mm(表面贴装) SKHU系列 具有防尘型等丰富的种类。 检测 按动 滑动 旋转 编码器 电源 产品一览 竖型 切换式 产品编号 TACT SwitchTM 特别定做 产品 动作力 操作方向 行程 操作寿命


    Original
    PDF SKHUAKE010 SKHUALE010 000cycles SKHUAME010 SKHUPKE010 SKHUPLE010 SKHUPME010 SKHUBHE010 SKHUPLE010 2V625

    SKQC

    Abstract: SKHUBHE010 tact switch smd SKHUAKE010 SKHUQGE010
    Text: TACT SwitchTM 6.2x6.5mm SMD Type SKHU Series Car Use RoHS applicable Wide varieties such dust protection type suitable for high density mounting. Features ● ● ● ● ● Detector 6.2×6.5mm dimension with 2.5 to 3.1mm height is suitable for high density mounting.


    Original
    PDF

    SKHUQEE010

    Abstract: SKHUADE010 SKHUBBE010 SKHUABE010 jog-shuttle SKHUAFE010 SKHUPBE010 SKHUBB 157N SKHUQBE010
    Text: 6.2x6.5mm Square Type TACT Switch SKHU Series Surface mounting type for high density mounting and available in wide varieties, including a dust-proof type. Power Lead Free Push Slide Car Use Rotary Encoders Features ● ● ● ● ● Jog Shuttle Applications


    Original
    PDF

    SKHUQEE010

    Abstract: SKHUADE010 tact switch smd SKHUBBE010 SKHUABE010 skhubb SKHUAFE010 SKHUPBE010 skhuab
    Text: 6.2x6.5mm TACT Switch SMD SKHU Series Wide varieties such dust protection type suitable for high density mounting. Power Car Use Push Slide Rotary Encoders Jog Shuttle Telephone -hook Features ● Detector ● Vibration Sensors ● Dual-in-line Package Type


    Original
    PDF

    Untitled

    Abstract: No abstract text available
    Text: 5/19/2014 SKHU Series - Basic information ALPS Manufacturer of Electronic Components/Parts Catalog 6.2x6.3mm T y p e Surfa ce Mount SKHU Series Det a il Dust-proof type Part number SKHUBHE010 Type Surface mount Operating force 1.57N Operating direction


    Original
    PDF SKHUBHE010 10Hz/min. 330mm /E/HTML/Tact/SurfaceMount/SKHU/SKHUBHE010

    SKHUBHE010

    Abstract: SKHUAKE010
    Text: TACT SwitchTM 6.2x6.3mm Surface Mount Type SKHU Series A wide variation of products including dust-proof type. Detector Push Slide Rotary Encoders Power Product Line Dual-in-line Package Type TACT SwitchTM CustomProducts Vertical Type Product No. Operating Operating Travel Rating Rating Operating life Initial contact Stem


    Original
    PDF SKHUAKE010 SKHUALE010 SKHUAME010 000cycles EC-19S-8 SKHUBHE010 SKHUAKE010

    SKRTLAE010

    Abstract: SKRTLBE010 EC-19S-8 soft TACTILE SWITCH SKRTL
    Text: TACT SwitchTM 4.5x3.55mm SidepushTM Surface Mount Type SKRT Series Horizontal push with high solder strengh & tactile feeling. Detector Push Slide Rotary Encoders Power Product Line Product No. Operating force Operating Travel Rating Rating Operating life Initial contact


    Original
    PDF SKRTLAE010 SKRTLBE010 000cycles 350max. EC-19S-8 SKRTLAE010 SKRTLBE010 soft TACTILE SWITCH SKRTL

    TRANSISTOR SMD K23

    Abstract: B DIN 5463
    Text: User's Guide SLAU296 – October 2009 ADS54RF63-ADX4 Single-channel, 12-bit, 2.2 GSPS Evaluation Module EVM 1 2 3 4 5 6 7 8 9 10 Contents Introduction . 2


    Original
    PDF SLAU296 ADS54RF63-ADX4 12-bit, TRANSISTOR SMD K23 B DIN 5463

    nRF24Z1

    Abstract: nRF24Z1-EVB CS5333 eeprom programmer usb male connector pcb mounted nRF24Z1-EVKIT J101 J102 nRF24Z1-EVBOARD N-7075
    Text: USER MANUAL nRF24Z1 Evaluation board 1. nRF24Z1-EVB General description This document describes the nRF24Z1-EVBOARD and its use with the Nordic Semiconductor nRF24Z1 Single Chip 2.4 GHz RF Audio streamer. Figure 1: The nRF24Z1-EVBOARD There are two versions of the nRF24Z1-EVBOARD. One is fitted with the nRF24Z1 in audio


    Original
    PDF nRF24Z1 nRF24Z1-EVB nRF24Z1-EVBOARD N-7075 CS5333 eeprom programmer usb male connector pcb mounted nRF24Z1-EVKIT J101 J102

    SKRGABD010

    Abstract: No abstract text available
    Text: TACT SwitchTM 6.2mm Diameter Round Terminal Radial Type SKRG Series Round terminal vertical type with excellent PC board mounting performance. Detector Push Slide Rotary Encoders Product Line Power Product No. Operating Operating Travel Rating Rating Operating life Initial contact


    Original
    PDF SKRGAAD010 SKRGABD010 000cycles SKRGACD010 SKRGAED010 SKRGALD010 SKRGAMD010 SKRGAND010 SKRGAQD010 SKRGARD010 SKRGABD010

    SCDA1A0900

    Abstract: RP5A U200B VCC33 SKHUAFE010 ADV7125KSTZ140 QTLP650D5TR 35CS08B-M75NA RP15C ATSTK1000
    Text: 5 4 3 2 1 VCC5.0 VCC3.3 VCC2.5 VCC1.8 RESET_N VCC5.0 VCC3.3 VCC2.5 VCC1.8 GND D D GND PS2_B_CLOCK PS2_B_DATA PS2_A_CLOCK PS2_A_DATA VCC3.3 VCC2.5 GND VCC3.3 VCC2.5 GND TWI_CLK TWI_DATA GPIO[0:31] TWI_CLK TWI_DATA UART_A_CLK UART_A_CLK UART_A_CTS UART_A_RTS


    Original
    PDF N-7075 ATSTK1000 T0241 SCDA1A0900 RP5A U200B VCC33 SKHUAFE010 ADV7125KSTZ140 QTLP650D5TR 35CS08B-M75NA RP15C

    SKRGADD010

    Abstract: SKRGAMD010 SKRG
    Text: タクトスイッチR V 6.2mm丸端子ラジアルタイプ SKRGシリーズ 実装性に優れた丸端子タイプ。 検出 プッシュ スライド ロータリ エンコーダ 製品一覧 動作寿命 初期接触 ステム 作動力 操作方向 移動量 最大定格 最小定格


    Original
    PDF SKRGAAD010 SKRGABD010 SKRGACD010 SKRGADD010 000cycles SKRGALD010 SKRGAND010 SKRGAQD010 SKRGARD010 SKRGADD010 SKRGAMD010 SKRG

    SKQMAQE010

    Abstract: SKQC TACT SWITCH datasheet skpm tact switch smd EC-19S-8 SKQMASE010
    Text: TACT SwitchTM 6x3.5mm Compact SMD Type SKQM Series Car Use RoHS applicable Compact size contributing to high density mounting. Features ● ● ● Detector The same external dimensions as conventional SKHL series products. Reflow solderable. Packaged with a 12mm wide embossed taping.


    Original
    PDF SKQMBAE010 SKQMAQE010 SKQMAQE010 SKQC TACT SWITCH datasheet skpm tact switch smd EC-19S-8 SKQMASE010

    EC-19S-8

    Abstract: No abstract text available
    Text: TACT SwitchTM 9mm Diameter Water-proof with Round Terminals Radial Type SKRC Series A round terminal type with highly efficient PC board mouting with excellent dustproof and water-proof performance. Detector Push Slide Rotary Product Line Encoders Product No.


    Original
    PDF SKRCACD010 SKRCADD010 000cycles EC-19S-8

    P372

    Abstract: No abstract text available
    Text: TACT SwitchTM 1.5mm Side-pushTM SMD Type SKRE Series RoHS applicable Horizontal type with 3.9x3.55×1.5mm dimension. Features Detector ● Push ● Slide ● 3.9×3.55mm outer dimension with 1.5mm height suitable for high density mounting. Horizontal type capable of operating in horizontal to PC board.


    Original
    PDF SKRELHE010 SKRELFE010 SKRELJE010 SKRELGE010 P372

    Untitled

    Abstract: No abstract text available
    Text: NEW PRODUCTS TACTile Keyswitch - Mechanical, 6 x 6 , SMD H Features Miniature 6 x 6 mm outline size , SMD type Sharp "click" feel with positive tactile feedback Reflow solderable SKHU D D I r Configuration P/N Operate Force SKHUBB 160 gF ± 50 Life Stem Color


    OCR Scan
    PDF