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

    TS820 Search Results

    TS820 Datasheets (46)

    Select Manufacturer
    Part ECAD Model Manufacturer Description Datasheet Type PDF PDF Size Page count
    TS820
    STMicroelectronics 8A SCRs Original PDF 164.6KB 9
    TS820-400B
    STMicroelectronics SENSITIVE SCR Original PDF 71.66KB 6
    TS820-400T
    STMicroelectronics SENSITIVE SCR Original PDF 71.66KB 6
    TS820-400T
    Teccor Electronics Cross Reference Data to Teccor Part Numbers (See datasheet appendix) Original PDF 2.72MB 224
    TS820-600
    STMicroelectronics 8A SCRs Original PDF 164.59KB 9
    TS820-600B
    STMicroelectronics SCRs - Single, Discrete Semiconductor Products, SCR 8A 20MA 600V DPAK Original PDF 17
    TS820-600B
    STMicroelectronics 8 A SCR Original PDF 164.59KB 9
    TS820-600B
    STMicroelectronics 8A SCRS Original PDF 133.23KB 12
    TS820-600B
    STMicroelectronics 8A SCRS Original PDF 108.49KB 9
    TS820-600B
    Teccor Electronics Cross Reference Data to Teccor Part Numbers (See datasheet appendix) Original PDF 2.72MB 224
    TS820-600B-TR
    STMicroelectronics SCRs - Single, Discrete Semiconductor Products, SCR 8A 600V DPAK Original PDF 17
    TS820-600BTR
    STMicroelectronics 8A SCR Original PDF 108.49KB 9
    TS820-600B-TR
    STMicroelectronics 8 A SCR Original PDF 164.59KB 9
    TS820-600B-TR
    STMicroelectronics 8A SCRS Original PDF 133.23KB 12
    TS820-600FP
    STMicroelectronics SCRs - Single, Discrete Semiconductor Products, SCR 600V 8A TO220FPAB Original PDF 17
    TS820-600H
    STMicroelectronics SCRs - Single, Discrete Semiconductor Products, SCR 8A 20MA 600V IPAK Original PDF 17
    TS820-600H
    STMicroelectronics 8 A SCR Original PDF 164.59KB 9
    TS820-600H
    STMicroelectronics 8A SCRS Original PDF 133.23KB 12
    TS820-600H
    Teccor Electronics Cross Reference Data to Teccor Part Numbers (See datasheet appendix) Original PDF 2.72MB 224
    TS820-600HTR
    STMicroelectronics 8A SCR Original PDF 108.49KB 9
    SF Impression Pixel

    TS820 Price and Stock

    Select Manufacturer

    STMicroelectronics TS820-600B-TR

    Thyristor SCR 600V 73A 3-Pin(2+Tab) DPAK T/R
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    Verical TS820-600B-TR 20,000 2,500
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.21
    Buy Now
    Mouser Electronics TS820-600B-TR 2,445
    • 1 $1.30
    • 10 $0.81
    • 100 $0.54
    • 1000 $0.38
    • 10000 $0.30
    Buy Now
    Arrow Electronics TS820-600B-TR 20,000 15 Weeks 2,500
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.21
    Buy Now
    STMicroelectronics TS820-600B-TR 2,445 1
    • 1 $1.26
    • 10 $0.79
    • 100 $0.52
    • 1000 $0.41
    • 10000 $0.41
    Buy Now
    Bristol Electronics TS820-600B-TR 50
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Get Quote
    TME TS820-600B-TR 876 1
    • 1 $1.15
    • 10 $0.84
    • 100 $0.51
    • 1000 $0.36
    • 10000 $0.36
    Buy Now
    Ameya Holding Limited TS820-600B-TR 25,523
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Get Quote
    Avnet Silica TS820-600B-TR 45,000 16 Weeks 2,500
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Buy Now
    EBV Elektronik TS820-600B-TR 16 Weeks 2,500
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Get Quote

    STMicroelectronics TS820-600B

    Thyristor SCR 600V 73A 3-Pin(2+Tab) DPAK Tube
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    Verical TS820-600B 1,363 29
    • 1 -
    • 10 -
    • 100 $0.26
    • 1000 $0.22
    • 10000 $0.22
    Buy Now
    Mouser Electronics TS820-600B 2,965
    • 1 $1.30
    • 10 $0.56
    • 100 $0.50
    • 1000 $0.34
    • 10000 $0.30
    Buy Now
    Arrow Electronics TS820-600B 1,384 15 Weeks 1
    • 1 $0.28
    • 10 $0.28
    • 100 $0.26
    • 1000 $0.23
    • 10000 $0.22
    Buy Now
    Newark TS820-600B Bulk 1,427 1
    • 1 $1.21
    • 10 $0.91
    • 100 $0.60
    • 1000 $0.48
    • 10000 $0.39
    Buy Now
    STMicroelectronics TS820-600B 2,965 1
    • 1 $1.26
    • 10 $0.55
    • 100 $0.49
    • 1000 $0.40
    • 10000 $0.40
    Buy Now
    TME TS820-600B 335 1
    • 1 $1.09
    • 10 $0.64
    • 100 $0.47
    • 1000 $0.36
    • 10000 $0.27
    Buy Now
    Avnet Silica TS820-600B 14,325 16 Weeks 75
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Buy Now
    EBV Elektronik TS820-600B 1,050 16 Weeks 75
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Buy Now

    STMicroelectronics TS820-600T

    Thyristor SCR 600V 73A 3-Pin(3+Tab) TO-220AB Tube
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    Verical TS820-600T 750 324
    • 1 -
    • 10 -
    • 100 -
    • 1000 $0.96
    • 10000 $0.86
    Buy Now
    STMicroelectronics TS820-600T 14 1
    • 1 $1.71
    • 10 $0.98
    • 100 $0.80
    • 1000 $0.73
    • 10000 $0.73
    Buy Now
    Rochester Electronics TS820-600T 750 1
    • 1 -
    • 10 -
    • 100 $0.93
    • 1000 $0.77
    • 10000 $0.69
    Buy Now
    Vyrian TS820-600T 4,585
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Get Quote

    STMicroelectronics TS820-600FP

    Thyristor SCR 600V 73A 3-Pin(3+Tab) TO-220FPAB Tube
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    Verical TS820-600FP 140 20
    • 1 -
    • 10 -
    • 100 $0.38
    • 1000 $0.38
    • 10000 $0.38
    Buy Now
    Mouser Electronics TS820-600FP 6,097
    • 1 $1.65
    • 10 $0.78
    • 100 $0.70
    • 1000 $0.50
    • 10000 $0.44
    Buy Now
    Arrow Electronics TS820-600FP 150 15 Weeks 1
    • 1 $0.40
    • 10 $0.40
    • 100 $0.38
    • 1000 $0.38
    • 10000 $0.38
    Buy Now
    STMicroelectronics TS820-600FP 6,097 1
    • 1 $1.65
    • 10 $0.78
    • 100 $0.70
    • 1000 $0.55
    • 10000 $0.55
    Buy Now
    TME TS820-600FP 407 1
    • 1 $1.35
    • 10 $0.83
    • 100 $0.61
    • 1000 $0.47
    • 10000 $0.36
    Buy Now
    EBV Elektronik TS820-600FP 16 Weeks 50
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Get Quote
    Vyrian TS820-600FP 6,290
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Get Quote

    Samtec Inc JW-02-04-T-S-820-050

    - Bulk (Alt: JW-02-04-T-S-820-050)
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    Avnet Americas JW-02-04-T-S-820-050 Bulk 1 Weeks, 2 Days 1
    • 1 $0.76
    • 10 $0.76
    • 100 $0.76
    • 1000 $0.31
    • 10000 $0.16
    Buy Now
    Sager JW-02-04-T-S-820-050 1
    • 1 $0.79
    • 10 $0.79
    • 100 $0.50
    • 1000 $0.33
    • 10000 $0.29
    Buy Now
    Master Electronics JW-02-04-T-S-820-050
    • 1 -
    • 10 -
    • 100 $0.61
    • 1000 $0.38
    • 10000 $0.25
    Buy Now

    TS820 Datasheets Context Search

    Catalog Datasheet Type Document Tags PDF

    Contextual Info: TS820-B/T SENSITIVE SCR FEATURES • It rm s = 8A ■ V drm /V rrm = 400, 600V, 700V ■ Ig t < 200^A ■ SMD PACKAGE DESCRIPTION The TS820-B/T series of SCR use a high perform­ ance TOPGLASS PNPN technology. The parts are intended for general purpose appli­


    OCR Scan
    ts820-b/t PDF

    Contextual Info: STEVAL-ILD003V1 Analog wall dimmer for CFL/LED lamps based on the TS820 EU version 220 V Data brief Features • Operation for 2-wire wall dimmer ■ Leading-edge control (compatible with all lamps commonly found on the market) ■ Operation on 230 V line rms voltage


    Original
    steval-ild003v1ts820 PDF

    Contextual Info: STEVAL-ILD003V2 Analog wall dimmer for CFL/LED lamps based on the TS820 USA version 110 V Data brief Features • Operation for 2-wire wall dimmer ■ Leading-edge control (compatible with all lamps commonly found on the market) ■ Operation on 120 V line rms voltage


    Original
    steval-ild003v2ts820 PDF

    TYN604 scr

    Abstract: scr TYN604 BTW69-1000N TYN656 X0405XF tyn610 TYN116 tyn112 TYN256 TN1625-800G
    Contextual Info: SCR & TRIAC SCRs D2PAK DPAK SOT 223 SOT23 SURFACE MOUNT SCRs Tj max = 125 °C except TS820-xxxB and TS420-xxxB: 110 °C Type IT(RMS) Ta (1) Tl (2) Tc (3) Ttab (4) (A) (°C) VRRM VDRM ITSM (V) (A) IRRM @ IDRM @ Tj max max (mA) Tj = 25°C dv/dt di/dt 67% V


    Original
    ts820-xxxbts420-xxxbot223p0102xl+16p0109xlp0102xnx0202xnts420-400bts420-600bts820-400btyn604 scrscr tyn604btw69-1000ntyn656x0405xftyn610tyn116tyn112tyn256tn1625-800g PDF

    triac sot23

    Abstract: TYN604 BTW66-400 SCR tyn612 TYN816 TYN058 TYN656 TYN658 TN2540-600G tyn610
    Contextual Info: SCR & TRIAC fZT SGS-THOMSON ^ 7/ SCRs [ID fflm itM M D C g l SOT23 SOT 223 DPAK D2PAK SURFACE MOUNT SCRs Tj max = 1 25 °C except TS820-xxxB and TS420-xxxB : 110 °C It (rm s ) Ta (A ) (1) Tl (2) Tc (3) Ttab (4) (°C) P0102xL P0109xL 0,2 P0102xN X0202xN


    OCR Scan
    ts820-xxxbts420-xxxbp0102xlp0109xl+14p0102xnot223x0202xe81734triac sot23tyn604btw66-400scr tyn612tyn816tyn058tyn656tyn658tn2540-600gtyn610 PDF

    TS820 600T

    Contextual Info: TN805, TN815 TS820, TYN608 Sensitive and standard 8 A SCRs Features A A • On-state rms current, IT RMS 8 A ■ Repetitive peak off-state voltage, VDRM/VRRM 600 and 800 V ■ K G K Triggering gate current, IGT 0.2 to 15 mA G IPAK TS820-600H A Description


    Original
    tn805tn815ts820tyn608+5ts820-600htn805-600btn815-x00bts820-600bts820 600t PDF

    rgk 20/2

    Abstract: TS820-B TS820-T TS820 ts820b
    Contextual Info: TS820-B/T  SENSITIVE SCR FEATURES A IT RMS =8A VDRM/VRRM = 400, 600V, 700V IGT < 200µA SMD PACKAGE A A DESCRIPTION G K K The TS820-B/T series of SCR use a high performance TOPGLASS PNPN technology. The parts are intended for general purpose applications using surface mount or through hole technology.


    Original
    ts820-b/to-220abts820-tts820-b+410micationsrgk 20/2ts820ts820b PDF

    Contextual Info: TS820-B  SENSITIVE SCR FEATURES IT RMS = 8A VDRM/VRRM = 400 to 600V IGT < 200µA A DESCRIPTION A The TS820-B series of SCR use a high performance TOPGLASS PNPN technology. The parts are intended for general purpose applications using surface mount technology.


    Original
    ts820-b PDF

    600B

    Abstract: TS820-B
    Contextual Info: TS820-B  SENSITIVE SCR FEATURES IT RMS =8A VDRM/VRRM = 400 or 600V IGT < 200µA SMD PACKAGE A A G DESCRIPTION K The TS820-B series of SCR use a high performance TOPGLASS PNPN technology. The parts are intended for general purpose applications using surface mount technology.


    Original
    ts820-b600b PDF

    TYN608

    Abstract: TYN808 SCR 600V, 8A, 15mA Igt 7476 TN805 TN815 TS820 TYN08 TYN1008
    Contextual Info: TN805, TN815, TS820 TYN608, TYN808, TYN1008 Sensitive and standard 8 A SCRs Features A • On-state rms current, IT RMS 8 A ■ Repetitive peak off-state voltage, VDRM/VRRM 600 to 1000 V ■ A G A Triggering gate current, IGT 0.2 to 15 mA K K A G Description


    Original
    tn805tn815ts820tyn608+9tyn808tyn1008tn805-xxxbtn815-xxxbts820-xxxbtn805-xxxhscr 600v, 8a, 15ma igt7476tyn08 PDF

    TS820600T

    Abstract: TYN608RG TS820-600B TS820-600BTR TS8206 TYN608 TS820-600T TS820-600 TYN608 scr ts820600b
    Contextual Info: TN805, TN815 TS820, TYN608 Sensitive and standard 8 A SCRs Features A A • On-state rms current, IT RMS 8 A ■ Repetitive peak off-state voltage, VDRM/VRRM 600 and 800 V ■ K G K Triggering gate current, IGT 0.2 to 15 mA G IPAK TS820-600H A Description


    Original
    tn805tn815ts820tyn608+10ts820-6dts820600ttyn608rgts820-600bts820-600btrts8206ts820-600tts820-600tyn608 scrts820600b PDF

    TYN08

    Contextual Info: TN805, TN815, TS820, TYN608 Sensitive and standard 8 A SCRs Datasheet - production data A Description K Available either in sensitive TS8 or standard (TN8 / TYN) gate triggering levels, the 8 A SCR series is suitable to fit all modes of control found in applications such as overvoltage crowbar


    Original
    tn805tn815ts820tyn608+4o-220abo-220fpabdocid7476tyn08 PDF

    BTB04-600SAP

    Abstract: S0817MH S1217NH BTA12-700BW BTB04 600SAP BTB04-600SAP equivalent BTB06-700SW btb04600sap s1217mh BTA06-400GP
    Contextual Info: Thyristors 4-Quadrant Triacs - continued 4-Quadrant Triacs - continued Thyristors ST Microelectronics Cross Reference Guide Silicon Controlled Rectifiers SCRs - continued VDRM (V) IGT (mA) Package ST Part NXP Part 800 35/35/35/70 SOT78 / TO220AB Z0109NN


    Original
    o220abz0109nnz0109sabt131-800e+12z0109naz0109snbtb04-600saps0817mhs1217nhbta12-700bwbtb04 600sapbtb04-600sap equivalentbtb06-700swbtb04600saps1217mhbta06-400gp PDF

    bta41-600b application

    Abstract: po130aa BTA41-600B TYN616 BTA41-800B BTB24-600BW BTA06-600B bta40 circuit TYN1012 BTA26-800B internal circuit
    Contextual Info: Thyristors Advanced Power Switching Reference Guide SENSITIVE GATE SCRs IT RMS (A) VRRM / VDRM (V) P/N ITSM* (A) IGT max (µA) IH max (mA) 0.25 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 4 4 4 4 4 4 4


    Original
    p0102blp0102dap0102dnp0111da+16p0111dnp0118dap0118dnxl0840p0102map0102mnbta41-600b applicationpo130aabta41-600btyn616bta41-800bbtb24-600bwbta06-600bbta40 circuittyn1012bta26-800b internal circuit PDF

    TYN616

    Abstract: 100-6 scr Transistor 2p4m SCR 2P4M
    Contextual Info: Products Search Home About Us Products Category Product News Application Message to Us Contact Us You are Here : >Home>Product Showcase > Transistors/IC Products Show Diode Bridge Superfast Diode Ultrafast Diode FRD Diode STD Diode Schottky Diode Transil/TVS


    Original
    o-202ts82060/16ao-220+6bt15175/23atyn616100-6 scrtransistor 2p4mscr 2p4m PDF

    transistors C106

    Abstract: TO202 package transistor 2p4m
    Contextual Info: Products Search Home Products Category About Us Product News Application Message to Us Contact Us You are Here : >Home>Product Showcase > Transistors/IC Products Show Diode Bridge Superfast Diode Ultrafast Diode FRD Diode STD Diode Schottky Diode Transil/TVS


    Original
    o-20260/16ao-220bt151+475/23atransistors c106to202 packagetransistor 2p4m PDF

    TRIAC zo 607 MA

    Abstract: ZO 607 TRIAC Westinghouse SCR handbook tl-130 transformer BRX49 equivalent 800w class d circuit diagram schematics triac MAC 97 AB triac MAC 97 A6 ZO 103 TRIAC 1N5760
    Contextual Info: DL137/D Rev. 7, May-2000 Thyristor Device Data TRIACs, SCRs, Surge Suppressors, and Triggers ON Semiconductor Thyristor Device Data TRIACs, SCRs, Surge Suppressors, and Triggers DL137/D Rev. 7, May–2000  SCILLC, 2000 Previous Edition  1995 “All Rights Reserved’’


    Original
    dl137/dmay-2000r14525triac zo 607 ma+9zo 607 triacwestinghouse scr handbooktl-130 transformerbrx49 equivalent800w class d circuit diagram schematicstriac mac 97 abtriac mac 97 a6zo 103 triac1n5760 PDF

    rgk 20/2

    Abstract: TN805 TN815 TS820 SCR TYN Series SCR 600V, 8A, 15mA Igt TYN series
    Contextual Info: TN8, TS8 and TYNx08 Series 8A SCRs SENSITIVE & STANDARD MAIN FEATURES: A Symbol Value Unit IT RMS 8 A VDRM/VRRM 600 to 1000 V IGT 0.2 to 15 mA G K A A K A G DESCRIPTION K DPAK (TS8-B) (TN8-B) Available either in sensitive (TS8) or standard (TN8 / TYN) gate triggering levels, the 8A SCR


    Original
    tynx08rgk 20/2tn805tn815+4ts820scr tyn seriesscr 600v, 8a, 15ma igttyn series PDF

    schematic diagram atx Power supply 500w

    Abstract: pioneer PAL 012A 1000w inverter PURE SINE WAVE schematic diagram 600va numeric ups circuit diagrams winbond bios 25064 TLE 9180 infineon smsc MEC 1300 nu TBE schematic diagram inverter 2000w DK55 circuit diagram of luminous 600va UPS
    Contextual Info: QUICK INDEX NEW IN THIS ISSUE! Detailed Index - See Pages 3-24 Digital Signal Processors, iCoupler , iMEMS® and iSensor . . . . . 805, 2707, 2768-2769 Connectors, Cable Assemblies, IC Sockets . . . . . . . . . . . 28-568 RF Connectors . . . . . . . . . . . . . . . . . . . . . . Pages 454-455


    Original
    p462-ndp463-ndlng295lfcp2ulng395mftp5u+11us2011schematic diagram atx power supply 500wpioneer pal 012a1000w inverter pure sine wave schematic diagram600va numeric ups circuit diagramswinbond bios 25064tle 9180 infineonsmsc mec 1300 nutbe schematic diagram inverter 2000wdk55circuit diagram of luminous 600va ups PDF

    ACST107C

    Abstract: bta40 circuit TRIAC BTA16 - 600BWRG triac acs tp 300 ignition module SCR tyn612 BTW69-1200 triac bta12 800 triggering TYN616 thyristors TYN1012
    Contextual Info: Thyristors and AC switches Advanced power switching Selection guide July 2008 STMicroelectronics - July 2008 - Printed in Italy - All rights reserved The STMicroelectronics corporate logo is a registered trademark of the STMicroelectronics group of companies. All other names are the property of their respective owners.


    Original
    sgthy0608acst107cbta40 circuittriac bta16 - 600bwrg+7triac acstp 300 ignition modulescr tyn612btw69-1200triac bta12 800 triggeringtyn616 thyristorstyn1012 PDF

    FSQ510 Equivalent

    Abstract: BTA12 6008 bta16 6008 ZIGBEE interface with AVR ATmega16 Precision triac control thermostat thyristor t 558 f eupec gw 5819 diode transistor a564 A564 transistor BSM25GP120 b2
    Contextual Info: SEMICONDUCTORS MCU/MPU/DSP Atmel. . . . . . . . . 167, 168, 169, 170, 171, 172 Blackhawk. . . . . . . . . . . . . . . . . . . . . . . . . 173 Cyan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174 Cypress. . . . . . . . . . . . . . . 175, 176, 177, 178


    Original
    gp-20fsq510 equivalentbta12 6008bta16 6008+7zigbee interface with avr atmega16precision triac control thermostatthyristor t 558 f eupecgw 5819 diodetransistor a564a564 transistorbsm25gp120 b2 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
    Contextual Info: 573 Technical portal and online community for Design Engineers - www.element-14.com Discrete & Power Devices Page 700 Bridge Rectifiers . . . . . . . . . . . . . . . . . . . . . . . . Diodes Schottky . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .


    Original
    element-14f155-6af155-10af165-15a+11f175-25airfb4115bty79 equivalentdiode skn 21-04marking code w04 sot-23bbc 598 479 diodemw 137 600gtfk 401 s 673vishay telefunken tfk transistorinfineon transistor marking w31jys marking transistor PDF

    IR 444 H

    Contextual Info: BUCHANAN Catalog 1308389 Terminal Blocks Revised 12-02 14.5MM PITCH, 65A— SERIES TSB2000 P h y s ic a l P r o p e r t ie s Housing: P o ly a m ic e fi UL94V-2 H o u s in g M a t e r i a l : F l a m m a b il it y : C o lo r : Natural off whit« Terminal:


    OCR Scan
    tsb2000ul94v-2tb82q0010ts8200q1qqs+2e63810ir 444 h PDF

    TS82000

    Abstract: tsb200
    Contextual Info: BUCHANAN Catalog 1 3 08 38 9 Revised 12-02 Terminal Blocks 14.5MM PITCH, 65A HIGH V O LT A G E VERSION— SER IES TSB2000.US P h y s ic a l P r o p e r t ie s Housing: H o u s in g M a t e r ia l : Polyamide 6 F la m m a b ilit y : UL94V-2 C o l o r : Natural off white


    OCR Scan
    tsb2000ul94v-210dsus11dsus+5ts8200012dsuslr28387e63810tsb200 PDF