Pogledaj sve

Molimo vas da englesku verziju pogledate kao našu službenu verziju.Povratak

France(Français) Germany(Deutsch) Italy(Italia) Russian(русский) Poland(polski) Czech(Čeština) Luxembourg(Lëtzebuergesch) Netherlands(Nederland) Iceland(íslenska) Hungarian(Magyarország) Spain(español) Portugal(Português) Turkey(Türk dili) Bulgaria(Български език) Ukraine(Україна) Greece(Ελλάδα) Israel(עִבְרִית) Sweden(Svenska) Finland(Svenska) Finland(Suomi) Romania(românesc) Moldova(românesc) Slovakia(Slovenská) Denmark(Dansk) Slovenia(Slovenija) Slovenia(Hrvatska) Croatia(Hrvatska) Serbia(Hrvatska) Montenegro(Hrvatska) Bosnia and Herzegovina(Hrvatska) Lithuania(lietuvių) Spain(Português) Switzerland(Deutsch) United Kingdom(English) Japan(日本語) Korea(한국의) Thailand(ภาษาไทย) Malaysia(Melayu) Singapore(Melayu) Vietnam(Tiếng Việt) Philippines(Pilipino) United Arab Emirates(العربية) Iran(فارسی) Tajikistan(فارسی) India(हिंदी) Madagascar(malaɡasʲ) New Zealand(Maori) Brazil(Português) Angola(Português) Mozambique(Português) United States(English) Canada(English) Haiti(Ayiti) Mexico(español)
DomproizvodiIntegrirani krugovi (IC)Linearna - pojačala - instrumentacija, optima

Linearna - pojačala - instrumentacija, optima

Pronađeni proizvodi 15,274

Lista proizvoda

1...207208209210211212213...306
Usporedite Slika Dio # Proizvođač Opis Inventar ECAD model RoHS -3 dB Širina pojasa Paket Broj osnovnog proizvoda Napon - raspon napajanja (max) Napon - raspon napajanja (min) Napon - odstupanje ulaza Trenutačno - ulazna pristranost Povećajte propusnost proizvoda Slaba stopa Trenutni - izlaz / kanal Vrsta pojačala Broj strujnih krugova Paket uređaja za dobavljače Paket / slučaj Vrsta izlaza Vrsta montaže Radna temperatura Tekuće - opskrba Niz Količina
MAX4383ESE+T MAX4383ESE+T Analog Devices Inc./Maxim Integrated IC OPAMP VFB 4 CIRCUIT 16SOIC Na lageru13200 pcs 210 MHz Tape & Reel (TR) MAX4383 11 V 4.5 V 3 mV 8.5 µA - 485V/µs 75 mA Voltage Feedback 4 16-SOIC 16-SOIC (0.154", 3.90mm Width) Rail-to-Rail Surface Mount -40°C ~ 85°C 7.5mA (x4 Channels) -
LM6134AIN LM6134AIN Texas Instruments IC OPAMP GP 4 CIRCUIT 14DIP Na lageru16340 pcs - Tube LM6134 24 V 1.8 V 1.7 mV 125 nA 11 MHz 14V/µs 3.5 mA General Purpose 4 14-PDIP 14-DIP (0.300", 7.62mm) Rail-to-Rail Through Hole -40°C ~ 85°C 390µA (x4 Channels) -
CLC449AJE CLC449AJE Texas Instruments IC OP AMP MONO 1.2GHZ 8-SOIC Na lageru1327 pcs 1.1 GHz Bulk CLC449 12 V 10 V 3 mV 6 µA - 2500V/µs 90 mA Current Feedback 1 8-SOIC 8-SOIC (0.154", 3.90mm Width) - Surface Mount -40°C ~ 85°C 12mA -
MAX4080SASA+T MAX4080SASA+T Analog Devices Inc./Maxim Integrated IC CURRENT SENSE 1 CIRCUIT 8SOIC Na lageru17033 pcs 250 kHz Tape & Reel (TR) MAX4080 76 V 4.5 V 100 µV 5 µA - - - Current Sense 1 8-SOIC 8-SOIC (0.154", 3.90mm Width) - Surface Mount -40°C ~ 125°C 75µA -
AD8565AKS-REEL7 AD8565AKS-REEL7 Analog Devices Inc. IC OPAMP GP R-R 5MHZ 35MA SC70-5 Na lageru17130 pcs - Bulk AD8565 16 V 4.5 V 2 mV 80 nA 5 MHz 6V/µs 35 mA General Purpose 1 SC-70-5 5-TSSOP, SC-70-5, SOT-353 Rail-to-Rail Surface Mount -40°C ~ 85°C 700µA -
TLV2461AIDR TLV2461AIDR Texas Instruments IC OPAMP GP 1 CIRCUIT 8SOIC Na lageru21404 pcs - Tape & Reel (TR) TLV2461 6 V 2.7 V 500 µV 1.3 nA 6.4 MHz 1.6V/µs 80 mA General Purpose 1 8-SOIC 8-SOIC (0.154", 3.90mm Width) Rail-to-Rail Surface Mount -40°C ~ 125°C 550µA -
AD847AQ AD847AQ Analog Devices Inc. IC OPAMP GP 1 CIRCUIT 8CERDIP Na lageru5090 pcs - Tube AD847 36 V 9 V 500 µV 3.3 µA 50 MHz 300V/µs 32 mA General Purpose 1 8-CERDIP 8-CDIP (0.300", 7.62mm) - Through Hole -40°C ~ 85°C 5.3mA -
MCP6283T-E/CH MCP6283T-E/CH Microchip Technology IC OPAMP GP 1 CIRCUIT SOT23-6 Na lageru101480 pcs - Tape & Reel (TR) MCP6283 6 V 2.2 V 3 mV 1 pA 5 MHz 2.5V/µs 25 mA General Purpose 1 SOT-23-6 SOT-23-6 Rail-to-Rail Surface Mount -40°C ~ 125°C 450µA -
LT1636CDD#TRPBF LT1636CDD#TRPBF Analog Devices Inc. IC OPAMP GP 1 CIRCUIT 8DFN Na lageru10593 pcs - Tape & Reel (TR) LT1636 44 V 2.7 V 125 µV 4 nA 220 kHz 0.075V/µs 30 mA General Purpose 1 8-DFN (3x3) 8-WFDFN Exposed Pad Rail-to-Rail Surface Mount 0°C ~ 70°C 50µA Over-The-Top®
TLC2262IDR TLC2262IDR Texas Instruments IC CMOS 2 CIRCUIT 8SOIC Na lageru39416 pcs - Tape & Reel (TR) TLC2262 16 V 4.4 V 300 µV 1 pA 730 kHz 0.55V/µs 50 mA CMOS 2 8-SOIC 8-SOIC (0.154", 3.90mm Width) Rail-to-Rail Surface Mount -40°C ~ 125°C 425µA (x2 Channels) LinCMOS™
AD8479ARZ AD8479ARZ Analog Devices Inc. IC OPAMP GP 1 CIRCUIT 8SOIC Na lageru8868 pcs 130 kHz Tube AD8479 36 V 5 V 500 µV - - 8V/µs 55 mA General Purpose 1 8-SOIC 8-SOIC (0.154", 3.90mm Width) Rail-to-Rail Surface Mount -40°C ~ 125°C 550µA -
OPA655U OPA655U Texas Instruments IC VOLTAGE FEEDBACK 1 CIRC 8SOIC Na lageru5380 pcs - Tube OPA655 10.5 V 9.5 V 1 mV 5 pA 240 MHz 295V/µs 60 mA Voltage Feedback 1 8-SOIC 8-SOIC (0.154", 3.90mm Width) - Surface Mount -40°C ~ 85°C 25mA -
AD8607AR-REEL AD8607AR-REEL Analog Devices Inc. IC OPAMP GP R-R CMOS DUAL 8SOIC Na lageru6510 pcs - Bulk AD8607 5 V 1.8 V 12 µV 0.2 pA 400 kHz 0.1V/µs 70 mA CMOS 2 8-SOIC 8-SOIC (0.154", 3.90mm Width) Rail-to-Rail Surface Mount -40°C ~ 125°C 40µA (x2 Channels) -
AD8202YRZ AD8202YRZ Analog Devices Inc. IC OPAMP DIFF 1 CIRCUIT 8SOIC Na lageru15162 pcs - Tube AD8202 12 V 3.5 V 1 mV 40 nA 50 kHz 0.28V/µs - Differential 1 8-SOIC 8-SOIC (0.154", 3.90mm Width) - Surface Mount -40°C ~ 125°C 250µA -
LM358NG LM358NG onsemi IC OPAMP GP 2 CIRCUIT 8DIP Na lageru16160 pcs - Tube LM358 32 V 3 V 2 mV 45 nA 1 MHz - 40 mA General Purpose 2 8-PDIP 8-DIP (0.300", 7.62mm) - Through Hole 0°C ~ 70°C 800µA (x2 Channels) -
AD526CD AD526CD Analog Devices Inc. IC OPAMP PGA 1 CIRCUIT 16CDIP Na lageru9240 pcs 4 MHz Tube AD526 33 V 9 V 250 µV 50 pA - 24V/µs 10 mA Programmable Gain 1 16-CDIP 16-CDIP (0.300", 7.62mm) - Through Hole -40°C ~ 85°C 10mA -
THS4022CDGNR THS4022CDGNR Texas Instruments IC OPAMP VFB 2 CIRCUIT 8HVSSOP Na lageru4582 pcs 350 MHz Tape & Reel (TR) THS4022 32 V 9 V 500 µV 3 µA 350 MHz 470V/µs 100 mA Voltage Feedback 2 8-HVSSOP 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad - Surface Mount 0°C ~ 70°C 7.8mA (x2 Channels) -
TL082CD TL082CD STMicroelectronics IC OPAMP JFET 2 CIRCUIT 8SOIC Na lageru14759 pcs - Tube TL082 36 V 6 V 3 mV 20 pA 3 MHz 16V/µs 10 mA J-FET 2 8-SOIC 8-SOIC (0.154", 3.90mm Width) - Surface Mount 0°C ~ 70°C 1.4mA Automotive, AEC-Q100
INA180B1IDBVT INA180B1IDBVT Texas Instruments IC CURR SENSE 1 CIRCUIT SOT23-5 Na lageru40680 pcs 350 kHz Tape & Reel (TR) INA180 5.5 V 2.7 V 100 µV 80 µA - 2V/µs - Current Sense 1 SOT-23-5 SC-74A, SOT-753 Rail-to-Rail Surface Mount -40°C ~ 125°C 260µA -
TL084CD TL084CD Texas Instruments IC OPAMP JFET 4 CIRCUIT 14SOIC Na lageru105810 pcs - Tube TL084 30 V 10 V 3 mV 30 pA 3 MHz 13V/µs 10 mA J-FET 4 14-SOIC 14-SOIC (0.154", 3.90mm Width) - Surface Mount 0°C ~ 70°C 1.4mA (x4 Channels) -
NJU7057RB1-TE2 NJU7057RB1-TE2 Nisshinbo Micro Devices Inc. IC CMOS 2 CIRCUIT 8TVSP Na lageru44247 pcs - Tape & Reel (TR) NJU7057 5.5 V 1.8 V 800 µV 1 pA 2.1 MHz 0.8V/µs - CMOS 2 8-TVSP 8-VSSOP, 8-MSOP (0.110", 2.80mm Width) Rail-to-Rail Surface Mount -40°C ~ 125°C 520µA -
AD8030ARJZ-REEL7 AD8030ARJZ-REEL7 Analog Devices Inc. IC OPAMP GP 2 CIRCUIT SOT23-8 Na lageru21964 pcs 125 MHz Tape & Reel (TR) AD8030 12 V 2.7 V 1.6 mV 700 nA - 63V/µs 170 mA General Purpose 2 SOT-23-8 SOT-23-8 Rail-to-Rail Surface Mount -40°C ~ 125°C 1.4mA (x2 Channels) -
TLC2254CN TLC2254CN Texas Instruments IC OPAMP GP 4 CIRCUIT 14DIP Na lageru24087 pcs - Tube TLC2254 16 V 4.4 V 200 µV 1 pA 210 kHz 0.12V/µs 50 mA General Purpose 4 14-PDIP 14-DIP (0.300", 7.62mm) Rail-to-Rail Through Hole 0°C ~ 70°C 160µA (x4 Channels) LinCMOS™
ICL7652CPA ICL7652CPA Analog Devices Inc./Maxim Integrated IC OPAMP CHOPPER/STABLE 8-DIP Na lageru9047 pcs - Tube ICL7652 - - - - - 0.5V/µs - General Purpose 1 8-PDIP 8-DIP (0.300", 7.62mm) - Through Hole - - *
OPA2846IDR OPA2846IDR Texas Instruments IC VOLTAGE FEEDBACK 2 CIRC 8SOIC Na lageru6711 pcs - Tape & Reel (TR) OPA2846 12 V 5 V 150 µV 10 µA 1.65 GHz 600V/µs 80 mA Voltage Feedback 2 8-SOIC 8-SOIC (0.154", 3.90mm Width) - Surface Mount -40°C ~ 85°C 25.2mA -
OP113ESZ-REEL7 OP113ESZ-REEL7 Analog Devices Inc. IC OPAMP GP 1 CIRCUIT 8SOIC Na lageru3850 pcs - Tape & Reel (TR) OP113 36 V 4 V 75 µV 240 nA 3.4 MHz 1.2V/µs 40 mA General Purpose 1 8-SOIC 8-SOIC (0.154", 3.90mm Width) - Surface Mount -40°C ~ 85°C 3mA -
MC33202P MC33202P onsemi IC OPAMP DUAL R-R LOW VOLT 8DIP Na lageru16160 pcs - Tube MC33202 12 V 1.8 V 8 mV 80 nA 2.2 MHz 1V/µs 80 mA General Purpose 2 8-PDIP 8-DIP (0.300", 7.62mm) Rail-to-Rail Through Hole -40°C ~ 105°C 900µA (x2 Channels) -
INA131AP INA131AP Texas Instruments IC INST AMP 1 CIRCUIT 8DIP Na lageru4521 pcs 70 kHz Tube INA131 36 V 4.5 V 25 µV 500 pA - 0.7V/µs 20 mA Instrumentation 1 8-PDIP 8-DIP (0.300", 7.62mm) - Through Hole -40°C ~ 85°C 2.2mA -
MC33072PG MC33072PG onsemi IC OPAMP JFET 2 CIRCUIT 8DIP Na lageru14400 pcs - Tube MC33072 44 V 3 V 1 mV 100 nA 4.5 MHz 13V/µs 30 mA J-FET 2 8-PDIP 8-DIP (0.300", 7.62mm) - Through Hole -40°C ~ 85°C (TA) 1.9mA (x2 Channels) -
TL062ACP TL062ACP Texas Instruments IC OPAMP JFET 2 CIRCUIT 8DIP Na lageru130970 pcs - Tube TL062 30 V 10 V 3 mV 30 pA 1 MHz 3.5V/µs 20 mA J-FET 2 8-PDIP 8-DIP (0.300", 7.62mm) - Through Hole 0°C ~ 70°C 200µA (x2 Channels) -
MAX419EPD MAX419EPD Analog Devices Inc./Maxim Integrated IC OPAMP QUAD 1.2UA MAX 14-DIP Na lageru3380 pcs - Tube MAX419 10 V 2.5 V 1 mV 0.1 pA 150 kHz 0.08V/µs 600 µA General Purpose 4 14-PDIP 14-DIP (0.300", 7.62mm) Rail-to-Rail Through Hole -40°C ~ 85°C 1µA (x4 Channels) -
MAX9915EXT+T MAX9915EXT+T Analog Devices Inc./Maxim Integrated IC OPAMP GP 1 CIRCUIT SC70-6 Na lageru48430 pcs - Tape & Reel (TR) MAX9915 5.5 V 1.8 V 200 µV 1 pA 1 MHz 0.5V/µs - General Purpose 1 SC-70-6 6-TSSOP, SC-88, SOT-363 Rail-to-Rail Surface Mount -40°C ~ 85°C 20µA -
MCP6L4T-E/ST MCP6L4T-E/ST Microchip Technology IC OPAMP GP 4 CIRCUIT 14TSSOP Na lageru31800 pcs - Tape & Reel (TR) MCP6L4 6 V 2.7 V 1 mV 1 pA 2.8 MHz 2.3V/µs 20 mA General Purpose 4 14-TSSOP 14-TSSOP (0.173", 4.40mm Width) Rail-to-Rail Surface Mount -40°C ~ 125°C 200µA (x4 Channels) -
MCP6002-I/P MCP6002-I/P Microchip Technology IC OPAMP GP 2 CIRCUIT 8DIP Na lageru107650 pcs - Tube MCP6002 6 V 1.8 V 4.5 mV 1 pA 1 MHz 0.6V/µs 23 mA General Purpose 2 8-PDIP 8-DIP (0.300", 7.62mm) Rail-to-Rail Through Hole -40°C ~ 85°C (TA) 100µA (x2 Channels) -
LT1352CN8#PBF LT1352CN8#PBF Analog Devices Inc. IC VOLTAGE FEEDBACK 2 CIRC 8DIP Na lageru4364 pcs - Tube LT1352 30 V 5 V 200 µV 20 nA 3 MHz 200V/µs 14 mA Voltage Feedback 2 8-PDIP 8-DIP (0.300", 7.62mm) - Through Hole -40°C ~ 85°C 250µA (x2 Channels) LT®
NJU7008F2-TE1 NJU7008F2-TE1 Nisshinbo Micro Devices Inc. IC OPAMP GP 1 CIRCUIT SC88A Na lageru11120 pcs - Tape & Reel (TR) - 5.5 V 1 V 4 mV 1 pA 1 MHz 2.4V/µs 200 µA General Purpose 1 SC-88A 5-TSSOP, SC-70-5, SOT-353 - Surface Mount -40°C ~ 85°C 200µA -
OP90GS OP90GS Analog Devices Inc./Maxim Integrated IC OPAMP GP 1 CIRCUIT 8SOIC Na lageru4650 pcs - Tube OP90 36 V 1.6 V 125 µV 4 nA - 0.012V/µs 5 mA General Purpose 1 8-SOIC 8-SOIC (0.154", 3.90mm Width) - Surface Mount 0°C ~ 70°C 14µA -
TS274CDT TS274CDT STMicroelectronics IC CMOS 4 CIRCUIT 14SO Na lageru72690 pcs - Tape & Reel (TR) TS274 16 V 3 V 1.1 mV 1 pA 3.5 MHz 5.5V/µs 45 mA CMOS 4 14-SO 14-SOIC (0.154", 3.90mm Width) - Surface Mount 0°C ~ 70°C 1mA -
TL082ID TL082ID Texas Instruments IC OPAMP JFET 2 CIRCUIT 8SOIC Na lageru110780 pcs - Tube TL082 30 V 10 V 3 mV 30 pA 4 MHz 13V/µs 40 mA J-FET 2 8-SOIC 8-SOIC (0.154", 3.90mm Width) - Surface Mount -40°C ~ 85°C 1.4mA (x2 Channels) -
OPA4820IPWR OPA4820IPWR Texas Instruments IC OPAMP VFB 4 CIRCUIT 14TSSOP Na lageru10689 pcs 650 MHz Tape & Reel (TR) OPA4820 12.6 V 4 V 250 µV 9 µA 250 MHz 240V/µs 85 mA Voltage Feedback 4 14-TSSOP 14-TSSOP (0.173", 4.40mm Width) Differential Surface Mount -40°C ~ 85°C 22.6mA -
LTC2057HS8#TRPBF LTC2057HS8#TRPBF Analog Devices Inc. IC OPAMP ZER-DRIFT 1CIRC 8SO Na lageru20612 pcs - Tape & Reel (TR) LTC2057 36 V 4.75 V 0.5 µV 30 pA 1.5 MHz 0.45V/µs - Zero-Drift 1 8-SO 8-SOIC (0.154", 3.90mm Width) Rail-to-Rail Surface Mount -40°C ~ 125°C 900µA -
INA215BIRSWR INA215BIRSWR Texas Instruments IC CURR SENSE 1 CIRCUIT 10UQFN Na lageru114840 pcs - Tape & Reel (TR) INA215 26 V 2.7 V 1 µV 28 µA 40 kHz 0.4V/µs - Current Sense 1 10-UQFN (1.8x1.4) 10-UFQFN Single-Ended Surface Mount -40°C ~ 125°C 65µA Zero-Drift
LT1991CMS#TRPBF LT1991CMS#TRPBF Analog Devices Inc. IC OPAMP PGA 1 CIRCUIT 10MSOP Na lageru17522 pcs 110 kHz Tape & Reel (TR) LT1991 36 V 2.7 V 25 µV 2.5 nA 560 kHz 0.12V/µs 21 mA Programmable Gain 1 10-MSOP 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Rail-to-Rail Surface Mount 0°C ~ 70°C 130µA -
TS931AILT TS931AILT STMicroelectronics IC OPAMP GP 1 CIRCUIT SOT23-5 Na lageru48500 pcs - Tape & Reel (TR) TS931 10 V 2.7 V 5 mV 1 pA 100 kHz 0.05V/µs 5 mA General Purpose 1 SOT-23-5 SC-74A, SOT-753 Rail-to-Rail Surface Mount -40°C ~ 105°C 20µA -
MAX4080TASA MAX4080TASA Analog Devices Inc./Maxim Integrated IC CURRENT SENSE 1 CIRCUIT 8SOIC Na lageru12400 pcs 250 kHz Tube MAX4080 76 V 4.5 V 100 µV 5 µA - - - Current Sense 1 8-SOIC 8-SOIC (0.154", 3.90mm Width) - Surface Mount -40°C ~ 125°C 75µA -
TLV2464AQPWRQ1 TLV2464AQPWRQ1 Texas Instruments IC OPAMP GP 4 CIRCUIT 14TSSOP Na lageru19559 pcs - Tape & Reel (TR) TLV2464 6 V 2.7 V 150 µV 1.3 nA 6.4 MHz 1.6V/µs 80 mA General Purpose 4 14-TSSOP 14-TSSOP (0.173", 4.40mm Width) Rail-to-Rail Surface Mount -40°C ~ 125°C 550µA (x4 Channels) Automotive, AEC-Q100
TSV851IYLT TSV851IYLT STMicroelectronics IC OPAMP GP 1 CIRCUIT SOT23-5 Na lageru46220 pcs - Tape & Reel (TR) TSV851 5.5 V 2.5 V 4 mV 27 nA 1.3 MHz 0.7V/µs 70 mA General Purpose 1 SOT-23-5 SC-74A, SOT-753 Rail-to-Rail Surface Mount -40°C ~ 125°C 130µA Automotive, AEC-Q100
LT6202IS5#TRMPBF LT6202IS5#TRMPBF Analog Devices Inc. IC OPAMP GP 1 CIRCUIT TSOT23-5 Na lageru9945 pcs - Tape & Reel (TR) LT6202 12.6 V 2.5 V 2.6 mV 3.8 µA 100 MHz 25V/µs 40 mA General Purpose 1 TSOT-23-5 SOT-23-5 Thin, TSOT-23-5 Rail-to-Rail Surface Mount -40°C ~ 85°C 2.8mA -
LTC6362IDD#PBF LTC6362IDD#PBF Analog Devices Inc. IC OPAMP DIFF 1 CIRCUIT 8DFN Na lageru9695 pcs 34 MHz Tube LTC6362 5.25 V 2.8 V 75 µV 75 nA 180 MHz 45V/µs - Differential 1 8-DFN (3x3) 8-WFDFN Exposed Pad Differential, Rail-to-Rail Surface Mount -40°C ~ 85°C 1mA -
ISL28271FAZ ISL28271FAZ Renesas Electronics America Inc IC INST AMP 2 CIRCUIT 16QSOP Na lageru13220 pcs 180 kHz Tube ISL28271 5.5 V 2.4 V 35 µV 10 pA - 0.5V/µs 31 mA Instrumentation 2 16-QSOP 16-SSOP (0.154", 3.90mm Width) Rail-to-Rail Surface Mount -40°C ~ 125°C 120µA -
1...207208209210211212213...306
0 RFQ
Košarica za kupnju (0 Items)
Prazan je.
Usporedite popis (0 Items)
Prazan je.
Povratne informacije

Vaše povratne informacije su bitne!Na Allelco cijenimo korisničko iskustvo i nastojimo ga stalno poboljšati.
Podijelite svoje komentare s nama putem našeg obrasca za povratne informacije, a mi ćemo odmah odgovoriti.
Hvala vam što ste odabrali Allelco.

Subjekt
E-mail
komentari
Kapetan
Povucite ili kliknite za prijenos datoteke
Datoteka za prijenos
Vrste: .xls, .xlsx, .doc, .docx, .jpg, .png i .pdf.
Max File Veličina: 10MB