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

    V 821 Search Results

    V 821 Result Highlights (5)

    Part ECAD Model Manufacturer Description Download Buy
    LM2917MX/NOPB Texas Instruments Frequency to Voltage Converter 14-SOIC -40 to 85 Visit Texas Instruments Buy
    LM2907MX/NOPB Texas Instruments Frequency to Voltage Converter 14-SOIC -40 to 85 Visit Texas Instruments Buy
    LM2917M/NOPB Texas Instruments Frequency to Voltage Converter 14-SOIC -40 to 85 Visit Texas Instruments Buy
    LM2907M/NOPB Texas Instruments Frequency to Voltage Converter 14-SOIC -40 to 85 Visit Texas Instruments Buy
    LM2917N-8/NOPB Texas Instruments Frequency to Voltage Converter 8-PDIP -40 to 85 Visit Texas Instruments Buy
    SF Impression Pixel

    V 821 Price and Stock

    STMicroelectronics LMV821AILT

    IC OPAMP GP 1 CIRCUIT SOT23-5
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey LMV821AILT Digi-Reel 7,929 1
    • 1 $1.3
    • 10 $0.947
    • 100 $0.7592
    • 1000 $0.66099
    • 10000 $0.66099
    Buy Now
    LMV821AILT Cut Tape 7,929 1
    • 1 $1.3
    • 10 $0.947
    • 100 $0.7592
    • 1000 $0.66099
    • 10000 $0.66099
    Buy Now
    LMV821AILT Reel 6,000 3,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.63229
    Buy Now
    Newark LMV821AILT Cut Tape 4,713 1
    • 1 $1.55
    • 10 $1.33
    • 100 $0.914
    • 1000 $0.579
    • 10000 $0.579
    Buy Now
    STMicroelectronics LMV821AILT 4,878 1
    • 1 $1.27
    • 10 $0.84
    • 100 $0.7
    • 1000 $0.64
    • 10000 $0.64
    Buy Now
    Bristol Electronics LMV821AILT 177
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Get Quote
    Rochester Electronics LMV821AILT 72,000 1
    • 1 $0.7556
    • 10 $0.7556
    • 100 $0.7103
    • 1000 $0.6423
    • 10000 $0.6423
    Buy Now
    ComSIT USA LMV821AILT 3,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Get Quote
    Avnet Silica LMV821AILT 17 Weeks 3,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Buy Now
    EBV Elektronik LMV821AILT 3,000 21 Weeks 3,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Buy Now

    Texas Instruments DRV8212DRLR

    IC MOTOR DRIVER DC 11V SOT-563
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey DRV8212DRLR Reel 4,000 4,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.38891
    Buy Now
    TME DRV8212DRLR 974 1
    • 1 $0.736
    • 10 $0.578
    • 100 $0.469
    • 1000 $0.375
    • 10000 $0.375
    Buy Now
    Win Source Electronics DRV8212DRLR 39,100
    • 1 -
    • 10 -
    • 100 $0.5573
    • 1000 $0.3716
    • 10000 $0.3716
    Buy Now

    Texas Instruments DRV8213RTER

    DRV8213RTER
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey DRV8213RTER Cut Tape 2,763 1
    • 1 $1.17
    • 10 $0.844
    • 100 $0.6746
    • 1000 $0.5857
    • 10000 $0.5857
    Buy Now
    DRV8213RTER Digi-Reel 2,763 1
    • 1 $1.17
    • 10 $0.844
    • 100 $0.6746
    • 1000 $0.5857
    • 10000 $0.5857
    Buy Now
    Mouser Electronics DRV8213RTER 2,754
    • 1 $1.17
    • 10 $0.764
    • 100 $0.633
    • 1000 $0.586
    • 10000 $0.529
    Buy Now

    Panasonic Electronic Components EEU-FR1V821L

    CAP ALUM 820UF 20% 35V RADIAL TH
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey EEU-FR1V821L Bulk 1,423 1
    • 1 $1.22
    • 10 $0.761
    • 100 $1.22
    • 1000 $0.38799
    • 10000 $0.33534
    Buy Now
    RS EEU-FR1V821L Bulk 61 3
    • 1 -
    • 10 $0.97
    • 100 $0.82
    • 1000 $0.68
    • 10000 $0.68
    Buy Now
    Bristol Electronics EEU-FR1V821L 300 7
    • 1 -
    • 10 $0.825
    • 100 $0.3094
    • 1000 $0.3094
    • 10000 $0.3094
    Buy Now
    TTI EEU-FR1V821L Bulk 1,192 12
    • 1 -
    • 10 -
    • 100 $0.384
    • 1000 $0.324
    • 10000 $0.324
    Buy Now
    Master Electronics EEU-FR1V821L 2,800
    • 1 -
    • 10 -
    • 100 -
    • 1000 $0.3649
    • 10000 $0.3269
    Buy Now
    Ozdisan Elektronik EEU-FR1V821L
    • 1 $0.64262
    • 10 $0.64262
    • 100 $0.64262
    • 1000 $0.5588
    • 10000 $0.5588
    Get Quote

    Nichicon Corporation UPJ1V821MHD

    CAP ALUM 820UF 20% 35V RADIAL TH
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey UPJ1V821MHD Bulk 798 1
    • 1 $0.98
    • 10 $0.711
    • 100 $0.5068
    • 1000 $0.38013
    • 10000 $0.31677
    Buy Now
    TME UPJ1V821MHD 800
    • 1 -
    • 10 -
    • 100 -
    • 1000 $0.305
    • 10000 $0.305
    Get Quote
    Avnet Abacus UPJ1V821MHD 26 Weeks 3,200
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Buy Now
    Chip1Stop UPJ1V821MHD Bulk 126
    • 1 $0.539
    • 10 $0.391
    • 100 $0.242
    • 1000 $0.242
    • 10000 $0.242
    Buy Now

    V 821 Datasheets (6)

    Part ECAD Model Manufacturer Description Curated Datasheet Type PDF
    V821 NEC Semiconductor Selection Guide 1995 Original PDF
    V82131500000G Amphenol Anytek Connectors, Interconnects - Terminal Blocks - Headers, Plugs and Sockets - TERM BLOCK PLUG 21POS STR 3.81MM Original PDF
    V82131510000G Amphenol Anytek Connectors, Interconnects - Terminal Blocks - Headers, Plugs and Sockets - TERM BLOCK PLUG 21POS STR 3.81MM Original PDF
    V82151500000G Amphenol Anytek Connectors, Interconnects - Terminal Blocks - Headers, Plugs and Sockets - TERM BLOCK PLUG 21POS STR 5.08MM Original PDF
    V82151510000G Amphenol Anytek Connectors, Interconnects - Terminal Blocks - Headers, Plugs and Sockets - TERM BLOCK PLUG 21POS STR 5.08MM Original PDF
    V82151520000G Amphenol Anytek Connectors, Interconnects - Terminal Blocks - Headers, Plugs and Sockets - TERM BLOCK PLUG 21POS STR 5.08MM Original PDF

    V 821 Datasheets Context Search

    Catalog Datasheet MFG & Type PDF Document Tags

    PED relay

    Abstract: No abstract text available
    Text: 53+,3|4 =?/8696.>?<2 69>2<8216.>2 ;:A2< <27.B 3FCPQNFO V 87C lpbm\abg` \ZiZ[bebmr V 87dV bfinel^ pbmalmZg] ohemZ`^ /[^mp^^g \hbe Zg] \hgmZ\ml0 V M^^ml VFG 7=:8 k^bg_hk\^ bglneZmbhg V Jb`aer ^_b\b^gm fZ`g^mb\ \bk\nbm _hk ab`a l^glbmbobmrA 977fW V Gqmk^f^er lfZee _hhmikbgm nmbebsbg` PED Zk^Z


    Original
    PDF 977fW SgO93 PED relay

    *f6p02

    Abstract: NTMS4700NR2
    Text: ON Semiconductor Selector Guide − Power MOSFET Products MOSFET − Surface Mount RDS on Max (W) @ VGS = VDSS (V) 10 V 4.5 V/5.0 V* 2.5 V/2.7 V* 1.8 V QT Typ (nC) @ VGS = 4.5 V (5.0 V)/10 V* ID (A) PD (W) 12 6.5 2 NTMD6N02 Max Rating Config. Page No. D 758


    Original
    PDF NTMD2P01 NTMS10P02 NTMS5P02 NTMD6P02 MMSF3P028* NTMD6N02 NTMS4N01 MMDF3N02HD NTMS4503N NTMS4700NR2 *f6p02

    82AD

    Abstract: 82ad marking for MSOP-8 Si9182 Si9182DH-15-T1 Si9182DH-18-T1 Si9182DH-20-T1 Si9182DH-25-T1 Si9182DH-285-T1 Si9182DH-28-T1 Si9182DH-29-T1
    Text: Si9182 Vishay Siliconix Micropower 250-mA CMOS LDO Regulator With Error Flag/Power-On-Reset FEATURES D D D D D D D Fixed 1.5-V, 1.8-V, 2.0-V, 2.5-V, 2.8-V, 2.85-V, 2.9-V, 3.0-V, 3.3-V, 5.0-V, or Adjustable Output Voltage Options D Other Output Voltages Available by Special Order


    Original
    PDF Si9182 250-mA 105-mV 500-mA 100-mV 25-kW 150-kW 01-mF 82AD 82ad marking for MSOP-8 Si9182 Si9182DH-15-T1 Si9182DH-18-T1 Si9182DH-20-T1 Si9182DH-25-T1 Si9182DH-285-T1 Si9182DH-28-T1 Si9182DH-29-T1

    10 16s capacitor smd

    Abstract: 226 smd capacitor RSM 2322 2222 632 series capacitor MOV 103 M 3 KV 336 smd CAPACITOR 2312 344 7 SMD resistor 474 2222 631 series capacitor SMD electrolytic capacitor
    Text: Information New products and highlights i Ceramic capacitors Information Page Multilayer ceramic capacitors, NP0 10 V - 4000 V Multilayer ceramic capacitors, X7R 10 V - 2000 V Multilayer ceramic capacitors, Y5V 10 V - 250 V General purpose, high voltage capacitors 1000 V to 3000 V X7R and Y5V


    Original
    PDF

    Untitled

    Abstract: No abstract text available
    Text: SEMiX904GB126HDs Absolute Maximum Ratings Symbol Conditions Values Unit IGBT VCES IC Tj = 150 °C 1200 V Tc = 25 °C 821 A Tc = 80 °C 572 A 600 A ICnom ICRM SEMiX 4s Trench IGBT Modules SEMiX904GB126HDs VGES tpsc Tj ICRM = 2xICnom VCC = 600 V VGE ≤ 20 V


    Original
    PDF SEMiX904GB126HDs SEMiX904GB126HDs E63532

    Untitled

    Abstract: No abstract text available
    Text: wiecon PC board connector, inverted plug / solder version Spacing: 5.08 mm codable Rated current: 12 A 250 V/4 kV/3 – Overvoltage category III *690 V/4 kV/2 – Overvoltage category II 1000 V/4 kV/1 – Overvoltage category I Type 8213 BL/. G Type 8213 BL/. W


    Original
    PDF 24pole

    82ad

    Abstract: Si9182DH-33-T1 TA 8215 Si9182 Si9182DH-15-T1 Si9182DH-18-T1 Si9182DH-20-T1 Si9182DH-25-T1 Si9182DH-28-T1 Si9182DH-30-T1
    Text: Si9182 New Product Vishay Siliconix Micropower 250-mA CMOS LDO Regulator With Error Flag/Power-On-Reset FEATURES D D D D D D D Fixed 1.5-V, 1.8-V, 2.0-V, 2.5-V, 2.8-V, 3.0-V, 3.3-V, 5.0-V, or Adjustable Output Voltage Options D Other Output Voltages Available by Special Order


    Original
    PDF Si9182 250-mA 105-mV 500-mA 100-mV 25-kW 150-kW 01-mF 82ad Si9182DH-33-T1 TA 8215 Si9182 Si9182DH-15-T1 Si9182DH-18-T1 Si9182DH-20-T1 Si9182DH-25-T1 Si9182DH-28-T1 Si9182DH-30-T1

    Si9182

    Abstract: Si9182DH-15-T1 Si9182DH-18-T1 Si9182DH-20-T1 Si9182DH-25-T1 Si9182DH-28-T1 Si9182DH-30-T1 Si9182DH-33-T1 Si9182DH-50-T1 82AD
    Text: Si9182 New Product Vishay Siliconix Micropower 250-mA CMOS LDO Regulator With Error Flag/Power-On-Reset FEATURES D D D D D D D Fixed 1.5-V, 1.8-V, 2.0-V, 2.5-V, 2.8-V, 3.0-V, 3.3-V, 5.0-V, or Adjustable Output Voltage Options D Other Output Voltages Available by Special Order


    Original
    PDF Si9182 250-mA 105-mV 500-mA 100-mV 25-kW 150-kW 01-mF Si9182 Si9182DH-15-T1 Si9182DH-18-T1 Si9182DH-20-T1 Si9182DH-25-T1 Si9182DH-28-T1 Si9182DH-30-T1 Si9182DH-33-T1 Si9182DH-50-T1 82AD

    T1078N

    Abstract: T1258N T348N T398N T828N
    Text: B6C - Schaltung ~~~ Anschlußspannung Bemessungs-Gleichspannung Sperrspannung Bauelement n. VDE 0558 VDRM/RRM 60 Veff 125 Veff 180 Veff 80 V 200 V 165 V 400 V 240 V 600 V Temp. tA Satzstrom Id [°C] [A] Verlustl. P d Luftmen. v L Schaltung pro KB [W] + -


    Original
    PDF T398N T828N T1258N T1078N T348N T1078N T1258N T348N T398N T828N

    T1078N

    Abstract: T1258N T348N T398N T828N DSA003136
    Text: B6C - Schaltung ~~~ Anschlußspannung Bemessungs-Gleichspannung Sperrspannung Bauelement n. VDE 0558 VDRM/RRM 60 Veff 125 Veff 180 Veff 80 V 200 V 165 V 400 V 240 V 600 V Temp. tA Satzstrom Id [°C] [A] Verlustl. P d Luftmen. v L Schaltung pro KB [W] + -


    Original
    PDF T398N T828N T1258N T1078N T1078N T1258N T348N T398N T828N DSA003136

    2222 655 2222

    Abstract: 2222 654 10109 2222 654 10229 2222 10229 2222 682 09338
    Text: Miniature plate, class 2/63 V/100 V/500 V/1000 V Ceramic capacitors Product information Rated DC voltage UR 63 V 100 V 500 V 1000 V Dielectric K 14 000 K 2000 K 5000 K 2000 K 2000 3 K 5000 3) material Z5V Y5P 4) X5U Y5P 4) Y5P 4) X5U –55 °C to +150 °C


    Original
    PDF N1500 2222 655 2222 2222 654 10109 2222 654 10229 2222 10229 2222 682 09338

    3636

    Abstract: T1078N T1258N T348N T398N T828N
    Text: M3.2C - Schaltung ~ Anschlußspannung Bemessungs-Gleichspannung Sperrspannung Bauelement n. VDE 0558 VDRM/RRM 60 Veff 125 Veff 180 Veff 35 V 200 V 70 V 400 V 100 V 600 V ~ ~ ~ ~ ~ + Kühlblöcke für Luftselbstkühlung Temp. tA Satzstrom Id Verlustl. P d Luftmen. v L


    Original
    PDF T398N T828N T1258N T1078N T348N 3636 T1078N T1258N T348N T398N T828N

    Untitled

    Abstract: No abstract text available
    Text: wiecon wiecon Insulated header PCB G G 28,5 T 22 5,00 5,08 20,00 20,32 28,5 3,2 250 V/4 kV/3 – Overvoltage category III 400 V/4 kV/2 – Overvoltage category III 400 V/4 kV/2 – Overvoltage category II >PBT< 8213 SEG 22 Rated current: 10 A 10,00 10,16 5,00


    Original
    PDF 24pole

    P102K

    Abstract: st330c14c0 87105 T70RIA120 25RIA scr stud 218 IRKH26-12 IRKT41-12 T50RIA20 irkt71
    Text: International Rectifier Phase Control SCR Part Number V RRM V DRM V I T(RMS) (A) I T(AV) (A) @T (C) (°C) I TSM 50 Hz 60 Hz (A) (A) I V GT GT (V) (mA) V @I TM TM (V) (A) R Θ dv/dt (V/µs) (°C/W) Notes Fax-on-Demand D2Pak Thyristors D2Pak 16TTS08S 800 16


    Original
    PDF 16TTS08S 16TTS12S 16TTS16S 25TTS08S 25TTS12S 25TTS16S 16TTS08 16TTS12 16TTS16 25TTS08 P102K st330c14c0 87105 T70RIA120 25RIA scr stud 218 IRKH26-12 IRKT41-12 T50RIA20 irkt71

    N 821 Diode

    Abstract: transistor IRF 450 821 transistor ON 823 D 823 transistor transistor D 822 irf transistor 822FI SC-0241 tr 821
    Text: rz 7 A 7#. SCS-THOMSON IRF 820/FI-821/FI mnmglliigmiBiMnigi_ IRF 822/FI-823/FI N - CHANNEL ENHANCEMENT MODE POWER MOS TRANSISTORS TYPE V DSS RdS OI1 IRF820 IRF820FI 500 V 500 V 3.0 ß 3.0 ß IRF821 IRF821FI 450 V 450 V 3.0 ß 3.0 n 2.5 A 2.0 A IRF822


    OCR Scan
    PDF IRF820 IRF820FI IRF821 IRF821FI IRF822 IRF822FI IRF823 IRF823FI 820/FI-821/FI 822/FI-823/FI N 821 Diode transistor IRF 450 821 transistor ON 823 D 823 transistor transistor D 822 irf transistor 822FI SC-0241 tr 821

    irc820

    Abstract: irf transistors IRF 820 i821
    Text: SGS-THOMSON ¡L IOT iOûS IRF820/FI-821/FI IRF822/FI N - CHANNEL ENHANCEMENT MODE POWER MOS TRANSISTORS TYPE IRF820 IRF820FI V dss I 500 500 R DS(on Id 3 Q 3 a 3 A 2.2 A 3 1) 3 a 3 A 2.2 A 4 n 4 il 2 .8 A V V IRF821 IRF821FI 450 V 450 V IRF822 IRF822FI 500


    OCR Scan
    PDF IRF820/FI-821/FI IRF822/FI IRF820 IRF820FI IRF821 IRF821FI IRF822 IRF822FI O-220 ISOWATT220 irc820 irf transistors IRF 820 i821

    ts26

    Abstract: DIODE ED 11 T188F TS18 25G30
    Text: Fast Thyristors Type Vdrm I trmsm ' tsm V RRM V A kA V dsM~Vdrm, 10 ms, V rsM=V rrm + T v| max ! VT/ I T V TO rT (di/dt) cr (d v /d t)cr V gt ¡GT ^thJC V/kA V m Q A /ps V/|js V mA ° c /w max T ,= Tv¡ = 25°C 25°C 180° el sin °c T vj max DIN IEC 747-6


    OCR Scan
    PDF

    MAX8212

    Abstract: MAX8211 METAL CAN TO-99 8 LEAD MAX821 MAX8211C MAX8211E MAX8211M MAX8212C MAX8212E VRA13
    Text: - M A X 8211 ,M A X 8 2 1 2 1 .1 5 V « E ttU H ü ft ty p * r t * L ! t C - M O S « i g < D S E ^ m @ i S T * , F U -y - / * V+ M A X 8211 l i T H R E S H O L D i S m c M n S t i ± 0 « < V oU T 0 « < V h ys V th It * 5 t t t i U # '? — 'y J r 'y - tZ - a j * - > v i ^ S t f i 7m A


    OCR Scan
    PDF MAX8211 MAX8212 MAX8211 ICL8211/8212 MAX821 MAX8212 METAL CAN TO-99 8 LEAD MAX8211C MAX8211E MAX8211M MAX8212C MAX8212E VRA13

    IC 8212

    Abstract: TAA 521 A maxb211 MAX8212 MAX8211 8212T yf-ta TAA 521 MAX8211C MAX8211E
    Text: - M A X 8211 ,M A X 8212 1 .1 5 V typ « E ttU H ü ft * r t * L ! t C - M O S « ig < D S E ^ m i S m @ iS T * , F U -y - / * V+ t tt iU # '? — 'y J r'y -tZ - * 5 ti c M n S ± a j * - > v i^ S t f i M A X 8 2 1 2 ± T H R E S H O L D 0 .5 V to + 1 8 V


    OCR Scan
    PDF MAX8211 MAX8212 MAX8211 ICL8211/8212 MAX821 500mW IC 8212 TAA 521 A maxb211 MAX8212 8212T yf-ta TAA 521 MAX8211C MAX8211E

    T510S

    Abstract: T691S
    Text: Fast Thyristors Type Schnelle Thyristoren continued/ Fortsetzung V d rm It r m s m l/TSM V T /I t V TO rT (di/dt)cr (dv/dt)cr V gt I gt R th J C T v j max V rrm V A kA V/kA V{TO) mw A/ps MS V/ps V mA °C/W °C Tvj = Tvj = DIN typ. DINIEC Tvj = Tvj = 180° el


    OCR Scan
    PDF T510S T510S T691S

    82AD

    Abstract: SILICONIX MARKING 82ad marking MARKING 8215 8PIN 82ad marking for MSOP-8
    Text: SÌ9182 VISHAY Vishay Siliconix New Product Micropower 250-mA CMOS LDO Regulator With Error Flag/Power-On-Reset FEATURES • Fixed 1.5-V, 1.8-V, 2.0-V, 2.5-V, 2.8-V, 3.0-V, 3.3-V, 5.0-V, or Adjustable Output Voltage Options • Other Output Voltages Available by Special Order


    OCR Scan
    PDF 250-mA 105-mV 500-mA 25-kQ 150-kfi S-01484-- 03-Jul-00 82AD SILICONIX MARKING 82ad marking MARKING 8215 8PIN 82ad marking for MSOP-8

    T308

    Abstract: T930S C122B T188F
    Text: Fast Thyristors T yp e V drm V RRM V It r m s m Itsm It a v m ^ c V TO It (d i/d t)cr A kA A 2s A /°C V m il A /p s 10 ms, 10ms, Wj max ^vj max 180° el sin ^vj max ^vj max DIN I EC 747-6 72/85 1,25 1,8 200 V dsm= V drm , V rsm=V rrm+ 100 V T 72 F 200. 800


    OCR Scan
    PDF F4/61 0QQ2175 000517b T308 T930S C122B T188F

    Untitled

    Abstract: No abstract text available
    Text: Fast Asymmetric Thyristors T ype V drm V rrm Itrsm Itsm l i 2dt Itavm^ c V V A kA A2s 10ms 10ms tvj max tvj max *103 A /°C 180° el sin V dsm = V drm V rrm C tq=1 pS A 158 S 600. 1300* 15(50) 400 2,5 30 V(TO) rT (d i/d t)cr V m i2 A / jjs tvj = tvi = DIN I EC


    OCR Scan
    PDF 0D021A4

    D 823 transistor

    Abstract: transistor IRF 450 821 transistor irf transistors irf821 IRF820 IRF820FI IRF821FI IRF822 IRF822FI
    Text: 30E D M 7cj5ci237 OQETflQ? 0 • ¿ Z T SGS-THOMSON ^7# RiöD [S IiIL[l©¥ S®Rflö©i S 6 S-THOMSON TYPE IRF820 IRF820FI IRF821 IRF821FI IRF822 IRF822FI IRF823 IRF823FI Voss 500 V 500 V 450 V 450 V 500 V 500 V 450 V 450 V ^DS(on 3.0 n 3.0 fi 3.0 fi


    OCR Scan
    PDF 820/FI-821/FI 822/FI-823/FI IRF820 IRF820FI IRF821 IRF821FI IRF822 IRF822FI IRF823 IRF823FI D 823 transistor transistor IRF 450 821 transistor irf transistors