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

    UMC3NT1 Search Results

    SF Impression Pixel

    UMC3NT1 Price and Stock

    Rochester Electronics LLC UMC3NT1

    TRAN NPN/PNP 50V 100MA SC88A
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey UMC3NT1 Bulk 54,000 5,323
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.06
    		Buy Now

    onsemi UMC3NT1G

    TRANS PREBIAS NPN/PNP 50V SC88A
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey UMC3NT1G Digi-Reel 6,238 1
    • 1 $0.27
    • 10 $0.167
    • 100 $0.27
    • 1000 $0.06754
    • 10000 $0.06754
    		Buy Now
    UMC3NT1G Cut Tape 6,238 1
    • 1 $0.27
    • 10 $0.167
    • 100 $0.27
    • 1000 $0.06754
    • 10000 $0.06754
    		Buy Now
    UMC3NT1G Reel 3,000 3,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.0562
    		Buy Now
    Avnet Americas UMC3NT1G Reel 4 Weeks 9,728
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.03701
    		Buy Now
    UMC3NT1G Reel 8 Weeks 21,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    		Buy Now
    Mouser Electronics UMC3NT1G 5,900
    • 1 $0.27
    • 10 $0.163
    • 100 $0.071
    • 1000 $0.064
    • 10000 $0.039
    		Buy Now
    Verical UMC3NT1G 4,850 268
    • 1 -
    • 10 -
    • 100 -
    • 1000 $0.022
    • 10000 $0.022
    		Buy Now
    UMC3NT1G 414 195
    • 1 -
    • 10 -
    • 100 -
    • 1000 $0.1254
    • 10000 $0.1254
    		Buy Now
    Arrow Electronics UMC3NT1G 4,850 1
    • 1 $0.1242
    • 10 $0.0761
    • 100 $0.0354
    • 1000 $0.0278
    • 10000 $0.022
    		Buy Now
    UMC3NT1G Cut Strips 414 8 Weeks 1
    • 1 $0.2349
    • 10 $0.1438
    • 100 $0.1339
    • 1000 $0.1254
    • 10000 $0.1254
    		Buy Now
    Newark UMC3NT1G Cut Tape 3,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 $0.045
    • 10000 $0.045
    		Buy Now
    UMC3NT1G Reel 6,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.048
    		Buy Now
    Onlinecomponents.com UMC3NT1G
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.0352
    		Buy Now
    Rochester Electronics UMC3NT1G 1,587,450 1
    • 1 $0.0375
    • 10 $0.0375
    • 100 $0.0352
    • 1000 $0.0319
    • 10000 $0.0319
    		Buy Now
    TME UMC3NT1G 10
    • 1 -
    • 10 $0.1185
    • 100 $0.0628
    • 1000 $0.0498
    • 10000 $0.0465
    		Get Quote
    Avnet Asia UMC3NT1G 8 Weeks 21,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    		Buy Now
    Avnet Silica UMC3NT1G 24,000 9 Weeks 3,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    		Buy Now
    Chip1Stop UMC3NT1G 4,850
    • 1 -
    • 10 -
    • 100 $0.0354
    • 1000 $0.0278
    • 10000 $0.0253
    		Buy Now
    UMC3NT1G 414
    • 1 -
    • 10 $0.1438
    • 100 $0.1339
    • 1000 $0.1254
    • 10000 $0.1254
    		Buy Now
    EBV Elektronik UMC3NT1G 10 Weeks 3,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    		Buy Now
    Flip Electronics UMC3NT1G 125,970
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    		Get Quote

    onsemi NSVUMC3NT1G

    TRANS NPN/PNP PREBIAS 0.15W SC88
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey NSVUMC3NT1G Digi-Reel 1
    • 1 $0.39
    • 10 $0.39
    • 100 $0.39
    • 1000 $0.39
    • 10000 $0.39
    		Buy Now
    NSVUMC3NT1G Reel 3,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.10401
    		Buy Now
    NSVUMC3NT1G Cut Tape 1
    • 1 $0.39
    • 10 $0.39
    • 100 $0.39
    • 1000 $0.39
    • 10000 $0.39
    		Buy Now
    Avnet Americas NSVUMC3NT1G Reel 0 Weeks, 2 Days 7,576
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.09504
    		Buy Now
    NSVUMC3NT1G Reel 4 Weeks 3,800
    • 1 $0.09738
    • 10 $0.09738
    • 100 $0.09738
    • 1000 $0.09738
    • 10000 $0.09738
    		Buy Now
    NSVUMC3NT1G Reel 10 Weeks 9,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.09738
    		Buy Now
    Mouser Electronics NSVUMC3NT1G 2,957
    • 1 $0.4
    • 10 $0.398
    • 100 $0.398
    • 1000 $0.398
    • 10000 $0.096
    		Buy Now
    Newark NSVUMC3NT1G Reel 3,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.114
    		Buy Now
    Rochester Electronics NSVUMC3NT1G 15,000 1
    • 1 $0.096
    • 10 $0.096
    • 100 $0.0902
    • 1000 $0.0816
    • 10000 $0.0816
    		Buy Now
    Avnet Silica NSVUMC3NT1G 11 Weeks 3,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    		Buy Now
    EBV Elektronik NSVUMC3NT1G 12 Weeks 3,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    		Buy Now
    Flip Electronics NSVUMC3NT1G 72,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    		Get Quote

    Flip Electronics NSVUMC3NT1G

    TRANS NPN/PNP PREBIAS 0.15W SC88
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey NSVUMC3NT1G Reel 10,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.09
    		Buy Now

    onsemi UMC3NT1

    Trans Digital BJT NPN/PNP 50V 100mA 5-Pin SC-70 T/R - Tape and Reel (Alt: UMC3NT1)
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    Avnet Americas UMC3NT1 Reel 4 Weeks 6,411
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.05616
    		Buy Now
    Bristol Electronics UMC3NT1 1,529
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    		Get Quote
    Rochester Electronics UMC3NT1 54,000 1
    • 1 $0.0569
    • 10 $0.0569
    • 100 $0.0535
    • 1000 $0.0484
    • 10000 $0.0484
    		Buy Now
    Find more UMC3NT1 price and stock on Findchips.com

    UMC3NT1 Datasheets (6)

    Part ECAD Model Manufacturer Description Curated Datasheet Type PDF
    UMC3NT1 On Semiconductor UMC3 - TRANSISTOR 100 mA, 50 V, 2 CHANNEL, NPN AND PNP, Si, SMALL SIGNAL TRANSISTOR, CASE 419A-02, SC-88A, SC-70, 5 PIN, BIP General Purpose Small Signal Original PDF
    UMC3NT1 On Semiconductor Dual Bias Resistor Transistors Original PDF
    UMC3NT1 On Semiconductor Dual Common Base-Collector Bias Resistor Transistors Original PDF
    UMC3NT1 On Semiconductor Dual Common Base-Collector Bias Resistor Transistor Original PDF
    UMC3NT1G On Semiconductor UMC3NT1 - TRANSISTOR 100 mA, 50 V, 2 CHANNEL, NPN AND PNP, Si, SMALL SIGNAL TRANSISTOR, HALOGEN FREE AND ROHS COMPLIANT, CASE 419A, SC-88A, 5 PIN, BIP General Purpose Small Signal Original PDF
    UMC3NT1G On Semiconductor TRANS DIGITAL BJT NPN/PNP 50V 100MA 5SOT-353 T/R Original PDF

    UMC3NT1 Datasheets Context Search

    Catalog Datasheet MFG & Type PDF Document Tags

    Untitled

    Abstract: No abstract text available
    Text: UMC2NT1, UMC3NT1, UMC5NT1 Preferred Devices Dual Common Base-Collector Bias Resistor Transistors http://onsemi.com NPN and PNP Silicon Surface Mount Transistors with Monolithic Bias Resistor Network 3 1 R1 The BRT Bias Resistor Transistor contains a single transistor with


    Original     		PDF

    Untitled

    Abstract: No abstract text available
    Text: UMC2NT1, UMC3NT1, UMC5NT1 Preferred Devices Dual Common Base−Collector Bias Resistor Transistors http://onsemi.com NPN and PNP Silicon Surface Mount Transistors with Monolithic Bias Resistor Network 3 The Bias Resistor Transistor BRT contains a single transistor with


    Original     		PDF OT-353

    Untitled

    Abstract: No abstract text available
    Text: UMC2NT1G, UMC3NT1G, UMC5NT1G Dual Common Base-Collector Bias Resistor Transistors http://onsemi.com NPN and PNP Silicon Surface Mount Transistors with Monolithic Bias Resistor Network 3 2 R1 The Bias Resistor Transistor BRT contains a single transistor with


    Original     		PDF OT-353

    Untitled

    Abstract: No abstract text available
    Text: UMC2NT1G, NSVUMC2NT1G, UMC3NT1G, UMC3NT1G, UMC5NT1G, NSVUMC5NT2G http://onsemi.com Dual Common Base-Collector Bias Resistor Transistors SC−88A/SOT−353 CASE 419A STYLE 6 NPN and PNP Silicon Surface Mount Transistors with Monolithic Bias Resistor Network


    Original     		PDF

    SMD310

    Abstract: No abstract text available
    Text: UMC2NT1, UMC3NT1, UMC5NT1 Preferred Devices Dual Common Base-Collector Bias Resistor Transistors http://onsemi.com NPN and PNP Silicon Surface Mount Transistors with Monolithic Bias Resistor Network 3 1 R1 The BRT Bias Resistor Transistor contains a single transistor with


    Original     		PDF r14525 SMD310

    SC-88A npn

    Abstract: No abstract text available
    Text: UMC2NT1G, UMC3NT1G, UMC5NT1G Preferred Devices Dual Common Base-Collector Bias Resistor Transistors http://onsemi.com NPN and PNP Silicon Surface Mount Transistors with Monolithic Bias Resistor Network 3 The Bias Resistor Transistor BRT contains a single transistor with


    Original     		PDF OT-353 SC-88A npn

    UMC3NT1

    Abstract: SMD310
    Text: UMC2NT1, UMC3NT1, UMC5NT1 Preferred Devices Dual Common Base-Collector Bias Resistor Transistors http://onsemi.com NPN and PNP Silicon Surface Mount Transistors with Monolithic Bias Resistor Network 3 1 R1 The BRT Bias Resistor Transistor contains a single transistor with


    Original     		PDF r14525 UMC3NT1 SMD310

    Untitled

    Abstract: No abstract text available
    Text: UMC2NT1, UMC3NT1, UMC5NT1 Preferred Devices Dual Common Base−Collector Bias Resistor Transistors http://onsemi.com NPN and PNP Silicon Surface Mount Transistors with Monolithic Bias Resistor Network 3 1 R1 The BRT Bias Resistor Transistor contains a single transistor with


    Original     		PDF OT-353

    Untitled

    Abstract: No abstract text available
    Text: UMC2NT1, UMC3NT1, UMC5NT1 Preferred Devices Dual Common Base-Collector Bias Resistor Transistors http://onsemi.com NPN and PNP Silicon Surface Mount Transistors with Monolithic Bias Resistor Network 3 1 R1 The BRT Bias Resistor Transistor contains a single transistor with


    Original     		PDF r14525

    Untitled

    Abstract: No abstract text available
    Text: UMC2NT1, UMC3NT1, UMC5NT1 Preferred Devices Dual Common Base-Collector Bias Resistor Transistors http://onsemi.com NPN and PNP Silicon Surface Mount Transistors with Monolithic Bias Resistor Network 3 1 R1 The BRT Bias Resistor Transistor contains a single transistor with


    Original     		PDF

    Untitled

    Abstract: No abstract text available
    Text: UMC2NT1, UMC3NT1, UMC5NT1 Preferred Devices Dual Common Base-Collector Bias Resistor Transistors http://onsemi.com NPN and PNP Silicon Surface Mount Transistors with Monolithic Bias Resistor Network 3 The Bias Resistor Transistor BRT contains a single transistor with


    Original     		PDF OT-353

    Untitled

    Abstract: No abstract text available
    Text: UMC2NT1, UMC3NT1, UMC5NT1 Preferred Devices Dual Common Base−Collector Bias Resistor Transistors http://onsemi.com NPN and PNP Silicon Surface Mount Transistors with Monolithic Bias Resistor Network 3 1 R1 The BRT Bias Resistor Transistor contains a single transistor with


    Original     		PDF OT-353

    Untitled

    Abstract: No abstract text available
    Text: UMC2NT1, UMC3NT1, UMC5NT1 Preferred Devices Dual Common Base−Collector Bias Resistor Transistors http://onsemi.com NPN and PNP Silicon Surface Mount Transistors with Monolithic Bias Resistor Network 3 The Bias Resistor Transistor BRT contains a single transistor with


    Original     		PDF OT-353

    NSVUMC2NT1G

    Abstract: NSVUMC2 UMC3NT1G SC marking code NPN transistor
    Text: UMC2NT1G, NSVUMC2NT1G, UMC3NT1G, UMC3NT1G, UMC5NT1G, NSVUMC5NT2G http://onsemi.com Dual Common Base-Collector Bias Resistor Transistors SC−88A/SOT−353 CASE 419A STYLE 6 NPN and PNP Silicon Surface Mount Transistors with Monolithic Bias Resistor Network


    Original     		PDF OT-353 NSVUMC2NT1G NSVUMC2 UMC3NT1G SC marking code NPN transistor

    2N3906 Darlington transistor

    Abstract: BC337 MPS5172 "cross-reference" low noise transistors bc638 transistor mpf102 LOW NOISE BC638 SOT-346 431 BC237 BC307 BC212
    Text: CHAPTER 1 Selector Guide http://onsemi.com 5 Small–Signal Bipolar Transistors, JFETs, and Diodes In Brief . . . Page Bipolar Transistors General–Purpose Transistors . . . . . . . . . . . . . . . . . 8 General–Purpose Multiple Transistors . . . . . . . . 11


    Original     		PDF M1MA151AT1 M1MA151KT1 M1MA152AT1 M1MA152KT1 M1MA151WAT1 M1MA151WKT1 M1MA152WAT1 M1MA152WKT1 BAS16WT1 M1MA141KT1 2N3906 Darlington transistor BC337 MPS5172 "cross-reference" low noise transistors bc638 transistor mpf102 LOW NOISE BC638 SOT-346 431 BC237 BC307 BC212

    mps2112

    Abstract: UC3842 smps design with TL431 MPS2111 dc motor speed control tl494 TRANSISTOR MPS2112 ic equivalent book ncp1203 mosfet triggering circuit USING TL494 smps with uc3842 and tl431 SG3526 tip122 tip127 mosfet audio amp
    Text: SG388/D Rev. 4, May-2002 Master Components Selector Guide Master Components Selector Guide ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC SCILLC . SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular


    Original     		PDF SG388/D May-2002 r14525 SG388 mps2112 UC3842 smps design with TL431 MPS2111 dc motor speed control tl494 TRANSISTOR MPS2112 ic equivalent book ncp1203 mosfet triggering circuit USING TL494 smps with uc3842 and tl431 SG3526 tip122 tip127 mosfet audio amp

    CS5170

    Abstract: mps2112 MPS2112ZL1 100A 300V IGBT MC3346P CS4124YDW16 ON Semiconductor PRICE BOOK 12V to 220V smps inverter bd234 igbt ac motor speed control
    Text: SGD501/D REV 8, January 5, 2002 NORTH AMERICA SALES AND DISTRIBUTION ON Semiconductor PRICE BOOK THIS BOOK IS IN COMPUTER SORT PRODUCT CLASSIFICATION – Please see General Information Section EFFECTIVE DATE: JANUARY 5, 2002 General Information Elimination Of Ozone Depleting Chemicals . . . .


    Original     		PDF SGD501/D Janua667 CS5170 mps2112 MPS2112ZL1 100A 300V IGBT MC3346P CS4124YDW16 ON Semiconductor PRICE BOOK 12V to 220V smps inverter bd234 igbt ac motor speed control

    TRANSISTOR AH-16

    Abstract: TRANSISTOR bH-16 equivalent of transistor bc212 bc 214 transistor marking code SOT-23 2FX 2907A PNP bipolar transistors SILICON TRANSISTOR FS 2025 marking JV SOD323 bf245 replacement GI 312 diode msd601
    Text: DL126/D Rev. 7, Nov-2001 Small-Signal Device Data Bipolar Transistors, JFETs and Diodes Small-Signal Device Data ON Semiconductor and are trademarks of Semiconductor Components Industries, LLC SCILLC . SCILLC reserves the right to make changes without further


    Original     		PDF DL126/D Nov-2001 r14525 DL126 TRANSISTOR AH-16 TRANSISTOR bH-16 equivalent of transistor bc212 bc 214 transistor marking code SOT-23 2FX 2907A PNP bipolar transistors SILICON TRANSISTOR FS 2025 marking JV SOD323 bf245 replacement GI 312 diode msd601

    BC237

    Abstract: BC847BPDW1T1 Series BC548 low noise transistors bc638 cbc550c BC307 2N5550* surface mount BC212 BSR58LT1 NSDEMN11XV6T1
    Text: Numeric Data Sheet Listing Data Sheet Function Page 1SS383T1 Dual Schottky Diode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 2N3819 JFET VHF/UHF Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53


    Original     		PDF 1SS383T1 2N3819 2N3903, 2N3904 2N3906 2N4401 2N4403 2N5087 2N5088, 2N5089 BC237 BC847BPDW1T1 Series BC548 low noise transistors bc638 cbc550c BC307 2N5550* surface mount BC212 BSR58LT1 NSDEMN11XV6T1

    low noise transistors bc638

    Abstract: BC548 MPS5172 "cross-reference" BC237 LOW NOISE BC638 BC449 "cross-reference" bc307b DTC114E SERIES 2N6520 DIODES MPF4856
    Text: CHAPTER 4 Index http://onsemi.com 1121 http://onsemi.com 1122 Subject Index B J Bias Resistor Transistors BRTs . . . . . . . . . . . . . . . . . . . 17 JFETs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Switches and Choppers . . . . . . . . . . . . . . . . . . . . . . . . . 22


    Original     		PDF MUN5313DW1T1 MUN5314DW1T1 MUN5315DW1T1 MUN5316DW1T1 MUN5330DW1T1 MUN5331DW1T1 MUN5332DW1T1 MUN5333DW1T1 MUN5334DW1T1 MUN5335DW1T1 low noise transistors bc638 BC548 MPS5172 "cross-reference" BC237 LOW NOISE BC638 BC449 "cross-reference" bc307b DTC114E SERIES 2N6520 DIODES MPF4856

    1500w audio amplifier circuit

    Abstract: Schottky Diode 80V 6A 1500w PWM 220v C106MG marking code SS SOT23 tl494cn inverter datasheet smps 1500W MMSZ5231BT1G dc 220v motor speed control circuit with scr NCP1200P60G
    Text: SGD501/D REV 19, October 9, 2004 NORTH AMERICA SALES AND DISTRIBUTION ON Semiconductor PRICE BOOK THIS BOOK IS IN COMPUTER SORT PRODUCT CLASSIFICATION − Please see General Information Section EFFECTIVE DATE: OCTOBER 9, 2004  General Information ON Semiconductor Standard Policies


    Original     		PDF SGD501/D 74VCX16373DT 74VCX16373DTR 74VCX16374DT 16BIT 74VCX16374DTR 80SQ045N 80SQ045NRL 1500w audio amplifier circuit Schottky Diode 80V 6A 1500w PWM 220v C106MG marking code SS SOT23 tl494cn inverter datasheet smps 1500W MMSZ5231BT1G dc 220v motor speed control circuit with scr NCP1200P60G

    ANA 618

    Abstract: voltage regulator ana 618 NZSMB15CAT3 GP 809 DIODE 1500w audio amplifier circuit SPEED CONTROL of DC MOTOR tda1085c CS5170 ANA 618* voltage regulator 12 VOLT 2 AMP smps diode 1n4007 MIC MAKE
    Text: SGD501/D REV 13, April 12, 2003 NORTH AMERICA SALES AND DISTRIBUTION ON Semiconductor PRICE BOOK THIS BOOK IS IN COMPUTER SORT PRODUCT CLASSIFICATION - Please see General Information Section EFFECTIVE DATE: APRIL 12, 2003  General Information Elimination Of Ozone Depleting Chemicals . . . .


    Original     		PDF SGD501/D ANA 618 voltage regulator ana 618 NZSMB15CAT3 GP 809 DIODE 1500w audio amplifier circuit SPEED CONTROL of DC MOTOR tda1085c CS5170 ANA 618* voltage regulator 12 VOLT 2 AMP smps diode 1n4007 MIC MAKE

    BC327 BC337 noise figure

    Abstract: BC337 Transistor BC307b MPS5172 "cross-reference" BC237 BC307 BC212
    Text: CHAPTER 1 Selector Guide http://onsemi.com 5 http://onsemi.com 6 Small–Signal Bipolar Transistors, JFETs, and Diodes In Brief . . . Page Bipolar Transistors General–Purpose Transistors . . . . . . . . . . . . . . . . . 8 General–Purpose Multiple Transistors . . . . . . . . 11


    Original     		PDF M1MA151AT1 M1MA151KT1 M1MA152AT1 M1MA152KT1 M1MA151WAT1 M1MA151WKT1 M1MA152WAT1 M1MA152WKT1 BAS16WT1 M1MA141KT1 BC327 BC337 noise figure BC337 Transistor BC307b MPS5172 "cross-reference" BC237 BC307 BC212

    marking 513 SOD-323

    Abstract: transistor marking code SOT-23 2FX BC449 equivalent DTD113 BC548 hie hre hfe steel package MPSW45A replacement BC449A equivalent 2n4401 free transistor equivalent book power tmos BF256
    Text: DL126/D Rev. 7, Nov-2001 Small-Signal Device Data Bipolar Transistors, JFETs and Diodes Small-Signal Device Data ON Semiconductor and are trademarks of Semiconductor Components Industries, LLC SCILLC . SCILLC reserves the right to make changes without further


    Original     		PDF DL126/D Nov-2001 r14525 DL126/D marking 513 SOD-323 transistor marking code SOT-23 2FX BC449 equivalent DTD113 BC548 hie hre hfe steel package MPSW45A replacement BC449A equivalent 2n4401 free transistor equivalent book power tmos BF256