O nas Skontaktuj się z nami Prześlij bom
RFQs(0)
polski
Zamknij menu
Pokaż wszystkie

Proszę zapoznać się z wersją angielską jako naszą oficjalną wersją.Powrót

Europa
France(Français) Germany(Deutsch) Italy(Italia) Russian(русский) Poland(polski) Netherlands(Nederland) Spain(español) Turkey(Türk dili) Israel(עִבְרִית) Denmark(Dansk) Switzerland(Deutsch) United Kingdom(English)
Azja/Pacyfik
Japan(日本語) Korea(한국의) Thailand(ภาษาไทย) Malaysia(Melayu) Singapore(Melayu) Philippines(Pilipino)
Afryka, Indie i Bliski Wschód
India(हिंदी)
Ameryka północna
United States(English) Canada(English) Mexico(español)
DomProduktyIzolatoryOptoisolatory - tranzystor, wyjście fotowoltaiczne

Optoisolatory - tranzystor, wyjście fotowoltaiczne

Znaleziono produkty 3,374

Lista produktów

1...32333435363738...68
Porównać Obraz Część # Producent Opis Inwentarz Model ECAD RoHS Vce Nasycenie (Max) Napięcie - Izolacja Czas narastania / spadku (typ) Napięcie - Wyjście (Max) Napięcie - Naprzód (Vf) (Typ) Prąd - przekierowanie DC (jeśli) (maks.) Obecny współczynnik przenikania (min) Obecny współczynnik przenikania (Max) Włączanie / Wyłączanie Czasu (Typ) Podstawowy numer produktu Pakiet Seria Typ wejścia temperatura robocza Rodzaj mocowania Typ wyjścia Liczba kanałów Package / Case Dostawca urządzeń Pakiet Obecny - Wyjście / Channel Ilość
HCPL-0454-500E HCPL-0454-500E Broadcom Limited OPTOISOLATOR 3.75KV TRANS 8-SO Na stanie38834 pcs - 3750Vrms - 20V 1.5V 25 mA 21% @ 16mA - 200ns, 300ns HCPL-0454 Tape & Reel (TR) - DC -55°C ~ 100°C Surface Mount Transistor 1 8-SOIC (0.154', 3.90mm Width) 8-SO 8mA
H11A1S H11A1S Lite-On Inc. OPTOISO 5KV TRANS W/BASE 6SMD Na stanie4080 pcs 400mV 5000Vrms 2.8µs, 4.5µs 30V 1.2V 60 mA 50% @ 10mA - - H11A Tube H11AX DC -55°C ~ 100°C Surface Mount Transistor with Base 1 6-SMD, Gull Wing 6-SMD 150mA
MOC8050M MOC8050M onsemi OPTOISO 4.17KV DARLINGTON 6DIP Na stanie167620 pcs - 4170Vrms - 80V 1.18V 60 mA 500% @ 10mA - 8.5µs, 95µs MOC8050 Tube - DC -40°C ~ 100°C Through Hole Darlington 1 6-DIP (0.300', 7.62mm) 6-DIP 150mA
SFH6106-4T SFH6106-4T Vishay Semiconductor Opto Division OPTOISOLATOR 5.3KV TRANS 4SMD Na stanie111020 pcs 400mV 5300Vrms 2µs, 2µs 70V 1.25V 60 mA 160% @ 10mA 320% @ 10mA 3µs, 2.3µs SFH6106 Tape & Reel (TR) - DC -55°C ~ 100°C Surface Mount Transistor 1 4-SMD, Gull Wing 4-SMD 50mA
TIL111M TIL111M Everlight Electronics Co Ltd OPTOISO 5KV TRANS W/BASE 6DIP Na stanie216100 pcs 400mV 5000Vrms 6µs, 8µs 80V 1.22V 60 mA - - - TIL111 Tube - DC -55°C ~ 110°C Through Hole Transistor with Base 1 6-DIP (0.400", 10.16mm) 6-DIP -
PC123ZY2J00F PC123ZY2J00F Sharp Microelectronics OPTOISOLATR 5KV TRANSISTOR 4-SMD Na stanie4400 pcs 200mV 5000Vrms 4µs, 3µs 70V 1.2V 50 mA 100% @ 5mA 250% @ 5mA - - Tape & Reel (TR) - DC -30°C ~ 100°C Surface Mount Transistor 1 4-SMD, Gull Wing 4-SMD 50mA
PS2802-1-F3-A PS2802-1-F3-A Renesas Electronics America Inc OPTOISOLATOR 2.5KV DARL 4SOIC Na stanie58150 pcs 1V 2500Vrms 200µs, 200µs 40V 1.1V 50 mA 200% @ 1mA - - PS2802 Tape & Reel (TR) NEPOC DC -55°C ~ 100°C Surface Mount Darlington 1 4-SOIC (0.173", 4.40mm Width) 4-SSOP 90mA
VO615A-7X007T VO615A-7X007T Vishay Semiconductor Opto Division OPTOISOLATR 5KV TRANSISTOR 4-SMD Na stanie396950 pcs 300mV 5000Vrms 3µs, 4.7µs 70V 1.43V 60 mA 80% @ 5mA 160% @ 5mA 6µs, 5µs VO615 Tape & Reel (TR) - DC -55°C ~ 110°C Surface Mount Transistor 1 4-SMD, Gull Wing 4-SMD 50mA
ISP814XSM ISP814XSM Isocom Components 2004 LTD OPTOISO 5.3KV TRANS 4SMD Na stanie272750 pcs 200mV 5300Vrms 4µs, 3µs 35V 1.2V 50 mA 20% @ 1mA 300% @ 1mA - ISP814 Tube - AC, DC -30°C ~ 100°C Surface Mount Transistor 1 4-SMD, Gull Wing 4-SMD 50mA
H11AV2M H11AV2M onsemi OPTOISO 7.5KV TRANS W/BASE 6DIP Na stanie5480 pcs 400mV 7500Vpk - 70V 1.18V 60 mA 50% @ 10mA - 15µs, 15µs H11A Tube - DC -40°C ~ 100°C Through Hole Transistor with Base 1 6-DIP (0.300', 7.62mm) 6-DIP -
PC457L0NIP0F PC457L0NIP0F SHARP/Socle Technology OPTOISO 3.75KV TRANSISTOR 5-SMD Na stanie47250 pcs - 3750Vrms - 20V 1.7V 25 mA 19% @ 16mA 50% @ 16mA 200ns, 400ns PC457L0 Tape & Reel (TR) OPIC™ DC -55°C ~ 85°C Surface Mount Transistor 1 6-SOIC (0.173", 4.40mm Width), 5 Leads 5-MFP 8mA
HCPL-5530 HCPL-5530 Broadcom Limited OPTOISO 1.5KV TRANS W/BASE 8DIP Na stanie537 pcs - 1500VDC - 20V 1.55V 20 mA 9% @ 16mA - 400ns, 1µs HCPL-5530 Tube - DC -55°C ~ 125°C Through Hole Transistor with Base 2 8-DIP (0.300', 7.62mm) 8-DIP 8mA
TCMT1117 TCMT1117 Vishay Semiconductor Opto Division OPTOISOLATOR 3.75KV TRANS 4SOP Na stanie133980 pcs 300mV 3750Vrms 3µs, 4µs 70V 1.15V 50 mA 80% @ 5mA 160% @ 5mA 5µs, 3µs TCMT1117 Tape & Reel (TR) - DC -40°C ~ 110°C Surface Mount Transistor 1 4-SOIC (0.173', 4.40mm Width) 4-SOP 50mA
HCPL2530 HCPL2530 onsemi OPTOISO 2.5KV 2CH TRANS 8DIP Na stanie17077 pcs - 2500Vrms - 20V 1.45V 25 mA 7% @ 16mA 50% @ 16mA 450ns, 500ns HCPL25 Tube - DC -55°C ~ 100°C Through Hole Transistor 2 8-DIP (0.300', 7.62mm) 8-DIP 8mA
LTV-8441S LTV-8441S Lite-On Inc. OPTOISO 5KV 4CH DARLINGTON 16SMD Na stanie3820 pcs 1V 5000Vrms 60µs, 53µs 35V 1.2V 50 mA 600% @ 1mA 7500% @ 1mA - LTV-844 Tube - AC, DC -30°C ~ 100°C Surface Mount Darlington 4 16-SMD, Gull Wing 16-SMD 80mA
ACPL-214-56AE ACPL-214-56AE Broadcom Limited OPTOISOLATOR 3KV TRANS 4SOIC Na stanie106460 pcs 400mV 3000Vrms 2µs, 3µs 80V 1.2V 50 mA 50% @ 1mA 250% @ 1mA 3µs, 3µs ACPL-214 Tape & Reel (TR) - AC, DC -55°C ~ 110°C Surface Mount Transistor 1 4-SOIC (0.173', 4.40mm Width) 4-SO 50mA
MOC8101 MOC8101 onsemi OPTOISOLATOR 5.3KV TRANS 6-DIP Na stanie4260 pcs 400mV 5300Vrms 1µs, 2µs 30V 1.15V 100 mA 50% @ 10mA 80% @ 10mA 2µs, 3µs MOC810 Tube - DC -55°C ~ 100°C Through Hole Transistor 1 6-DIP (0.300", 7.62mm) 6-DIP 50mA
MOC205M MOC205M onsemi OPTOISO 2.5KV TRANS W/BASE 8SOIC Na stanie130990 pcs 400mV 2500Vrms 3.2µs, 4.7µs 30V 1.15V 60 mA 40% @ 10mA 80% @ 10mA 7.5µs, 5.7µs MOC205 Tube - DC -40°C ~ 100°C Surface Mount Transistor with Base 1 8-SOIC (0.154', 3.90mm Width) 8-SOIC 150mA
HCPL-2503-000E HCPL-2503-000E Broadcom Limited OPTOISO 3.75KV TRANS W/BASE 8DIP Na stanie46544 pcs - 3750Vrms - 7V 1.5V 25 mA 15% @ 8mA - 1µs, 1.5µs HCPL-2503 Tube - DC -55°C ~ 100°C Through Hole Transistor with Base 1 8-DIP (0.300', 7.62mm) 8-DIP 8mA
HCPL-817-50AE HCPL-817-50AE Broadcom Limited OPTOISOLATOR 5KV TRANSISTOR 4SMD Na stanie121590 pcs 200mV 5000Vrms 4µs, 3µs 70V 1.2V 50 mA 80% @ 5mA 160% @ 5mA - HCPL-817 Tape & Reel (TR) - DC -30°C ~ 100°C Surface Mount Transistor 1 4-SMD, Gull Wing 4-SMD 50mA
ILQ620GB ILQ620GB Vishay Semiconductor Opto Division OPTOISO 5.3KV 4CH TRANS 16-DIP Na stanie21289 pcs 400mV 5300Vrms 20µs, 2µs 70V 1.15V 60 mA 100% @ 5mA 600% @ 5mA 3µs, 2.3µs ILQ620 Tube - AC, DC -55°C ~ 100°C Through Hole Transistor 4 16-DIP (0.300', 7.62mm) 16-DIP 50mA
TIL113M TIL113M Everlight Electronics Co Ltd OPTOISO 5KV DARL W/BASE 6DIP Na stanie71370 pcs 1.2V 5000Vrms - 55V 1.2V 60 mA 300% @ 10mA - 5µs, 100µs (Max) TIL113 Tube - DC -55°C ~ 100°C Through Hole Darlington with Base 1 6-DIP (0.400", 10.16mm) 6-DIP -
PS2503L-1-F3-A PS2503L-1-F3-A Renesas Electronics America Inc OPTOISOLATOR 5KV TRANS 4SMD Na stanie60770 pcs 250mV 5000Vrms 20µs, 30µs 40V 1.1V 80 mA 100% @ 1mA 400% @ 1mA - PS2503 Tape & Reel (TR) NEPOC DC -55°C ~ 100°C Surface Mount Transistor 1 4-SMD, Gull Wing 4-SMD 30mA
PS2503L-1-A PS2503L-1-A CEL OPTOISOLATOR 5KV TRANS 4SMD Na stanie4000 pcs 250mV 5000Vrms 20µs, 30µs 40V 1.1V 80 mA 100% @ 1mA 400% @ 1mA - - Tube NEPOC DC -55°C ~ 100°C Surface Mount Transistor 1 4-SMD, Gull Wing 4-SMD 30mA
FOD2711ASD FOD2711ASD Fairchild Semiconductor TRANSISTOR OUTPUT OPTOCOUPLER, 5 Na stanie67980 pcs 400mV 5000Vrms - 30V 1.5V (Max) - 100% @ 10mA 200% @ 10mA - - Bulk - DC -40°C ~ 85°C Surface Mount Transistor 1 8-SMD, Gull Wing 8-SMD 50mA
PVI5050 PVI5050 Infineon Technologies IC ISO PHOTOVOLTC 5V-OUT 8-DIP Na stanie5470 pcs - 2500Vrms - 5V - - - - - PVI5050 Tube PVI-NPbF DC - Through Hole Photovoltaic 1 8-DIP (0.300", 7.62mm), 6 Leads 8-DIP 5µA
PC451J00000F PC451J00000F SHARP/Socle Technology OPTOISOLATOR 3.75KV TRANS 4SMD Na stanie50350 pcs 300mV 3750Vrms 4µs, 5µs 350V 1.2V 50 mA 40% @ 5mA - - PC451 Tape & Reel (TR) - DC -25°C ~ 100°C Surface Mount Transistor 1 4-SMD, Gull Wing 4-Mini-Flat 50mA
H11A4TVM H11A4TVM onsemi OPTOISO 7.5KV TRANS W/BASE 6DIP Na stanie4300 pcs 400mV 7500Vpk - 30V 1.18V 60 mA 10% @ 10mA - 2µs, 2µs H11A Tube - DC -40°C ~ 100°C Through Hole Transistor with Base 1 6-DIP (0.400", 10.16mm) 6-DIP -
FODM453R1 FODM453R1 onsemi OPTOISO 3.75KV TRANSISTOR 5MFP Na stanie4980 pcs - 3750Vrms - 20V 1.6V 25 mA 20% @ 16mA 50% @ 16mA 400ns, 350ns FODM45 Tape & Reel (TR) - DC -40°C ~ 85°C Surface Mount Transistor 1 6-SOIC (0.173', 4.40mm Width), 5 Leads 5-Mini-Flat 8mA
4N35SR2VM 4N35SR2VM onsemi OPTOISO 4.17KV TRANS W/BASE 6SMD Na stanie104890 pcs 300mV 4170Vrms - 30V 1.18V 60 mA 100% @ 10mA - 2µs, 2µs 4N35 Tape & Reel (TR) - DC -40°C ~ 100°C Surface Mount Transistor with Base 1 6-SMD, Gull Wing 6-SMD -
SFH1690AT SFH1690AT Vishay Semiconductor Opto Division OPTOISOLATOR 3.75KV TRANS 4SOP Na stanie161210 pcs 400mV 3750Vrms 3µs, 4µs 70V 1.15V 50 mA 50% @ 5mA 150% @ 5mA 5µs, 3µs SFH1690 Tape & Reel (TR) - DC -55°C ~ 110°C Surface Mount Transistor 1 4-SMD, Gull Wing 4-SOP 50mA
HCPL0531 HCPL0531 onsemi OPTOCOUPLR TRANS 2CHAN HS 8SOIC Na stanie21456 pcs - 2500Vrms - 20V 1.45V 25 mA 19% @ 16mA 50% @ 16mA 450ns, 300ns HCPL05 Tube - DC -40°C ~ 85°C Surface Mount Transistor 2 8-SOIC (0.154', 3.90mm Width) 8-SOIC 8mA
MCT2SVM MCT2SVM onsemi OPTOISO 7.5KV TRANS W/BASE 6SMD Na stanie4750 pcs 400mV 7500Vpk 2µs, 1.5µs 30V 1.25V 60 mA 20% @ 10mA - 2µs, 2µs MCT2 Tube - DC -40°C ~ 100°C Surface Mount Transistor with Base 1 6-SMD, Gull Wing 6-SMD 50mA
FOD817B3S FOD817B3S Fairchild Semiconductor TRANSISTOR OUTPUT OPTOCOUPLER, 5 Na stanie5420 pcs 200mV 5000Vrms 4µs, 3µs 70V 1.2V 50 mA 130% @ 5mA 260% @ 5mA - - Bulk - DC -55°C ~ 110°C Surface Mount Transistor 1 4-SMD, Gull Wing 4-SMD 50mA
PS2705-1-V-F3-A PS2705-1-V-F3-A Renesas Electronics America Inc OPTOISOLATOR 3.75KV TRANS 4SMD Na stanie129140 pcs 300mV 3750Vrms 3µs, 5µs 40V 1.1V 50 mA 50% @ 5mA 300% @ 5mA - PS2705 Tape & Reel (TR) NEPOC AC, DC -55°C ~ 100°C Surface Mount Transistor 1 4-SMD, Gull Wing 4-SOP 80mA
LDA201STR LDA201STR IXYS Integrated Circuits Division OPTOISO 3.75KV 2CH TRANS 8SMD Na stanie4830 pcs 500mV 3750Vrms - 30V 1.2V 1 mA 33% @ 1mA 1000% @ 1mA 7µs, 20µs LDA201 Tape & Reel (TR) - DC -40°C ~ 85°C Surface Mount Transistor 2 8-SMD, Gull Wing 8-SMD -
FOD2711SD FOD2711SD onsemi OPTOISOLATOR 5KV TRANSISTOR 8SMD Na stanie4510 pcs 400mV 5000Vrms - 30V 1.5V (Max) - 100% @ 10mA 200% @ 10mA - FOD271 Tape & Reel (TR) - DC -40°C ~ 85°C Surface Mount Transistor 1 8-SMD, Gull Wing 8-SMD 50mA
HMA121F HMA121F onsemi OPTOISO 3.75KV TRANSISTOR 4SMD Na stanie4960 pcs 400mV 3750Vrms 3µs, 3µs 80V 1.3V (Max) 50 mA 100% @ 5mA 600% @ 5mA - HMA121 Box - DC -40°C ~ 100°C Surface Mount Transistor 1 4-SMD, Gull Wing 4-SMD 80mA
LDA202S LDA202S IXYS Integrated Circuits Division OPTOISO 3.75KV 2CH TRANS 8SMD Na stanie4010 pcs 500mV 3750Vrms - 30V 1.2V 1 mA 33% @ 1mA 1000% @ 1mA 7µs, 20µs LDA202 Tube - AC, DC -40°C ~ 85°C Surface Mount Transistor 2 8-SMD, Gull Wing 8-SMD -
ILD615-2 ILD615-2 Vishay Semiconductor Opto Division OPTOISOLTR 5.3KV 2CH TRANS 8-DIP Na stanie48580 pcs - 5300Vrms 2µs, 2µs 70V 1.15V 60 mA 63% @ 10mA 125% @ 10mA 3µs, 2.3µs ILD615 Tube - DC -55°C ~ 100°C Through Hole Transistor 2 8-DIP (0.300', 7.62mm) 8-DIP 50mA
TCLT1001 TCLT1001 Vishay Semiconductor Opto Division OPTOISOLATOR 5KV TRANS SOP-4L Na stanie212110 pcs 300mV 5000Vrms 3µs, 4.7µs 70V 1.25V 60 mA 40% @ 10mA 80% @ 10mA 6µs, 5µs TCLT1001 Tape & Reel (TR) - DC -40°C ~ 100°C Surface Mount Transistor 1 4-SMD, Gull Wing 4-SOP 50mA
PC851X PC851X Sharp Microelectronics OPTOISOLATOR 5KV TRANS 4DIP Na stanie3900 pcs 300mV 5000Vrms 4µs, 5µs 350V 1.2V 50 mA - - - - Tube - DC -25°C ~ 100°C Through Hole Transistor 1 4-DIP (0.300', 7.62mm) 4-DIP 50mA
PS2581AL1-A PS2581AL1-A CEL OPTOISOLATOR 5KV TRANS 4DIP Na stanie3780 pcs 300mV 5000Vrms 3µs, 5µs 70V 1.2V 30 mA 50% @ 5mA 400% @ 5mA - - Tube NEPOC DC -55°C ~ 100°C Through Hole Transistor 1 4-DIP (0.400', 10.16mm) 4-DIP 30mA
CNY17F-4X017T CNY17F-4X017T Vishay Semiconductor Opto Division OPTOISOLTR 5KV TRANSISTOR 6-SMD Na stanie129200 pcs 400mV 5000Vrms 2µs, 2µs 70V 1.39V 60 mA 160% @ 10mA 320% @ 10mA 3µs, 2.3µs CNY17 Tape & Reel (TR) - DC -55°C ~ 110°C Surface Mount Transistor 1 6-SMD, Gull Wing 6-SMD 50mA
HMA121 HMA121 onsemi OPTOISO 3.75KV TRANSISTOR 4SMD Na stanie3680 pcs 400mV 3750Vrms 3µs, 3µs 80V 1.3V (Max) 50 mA 50% @ 5mA 600% @ 5mA - HMA121 Box - DC -40°C ~ 100°C Surface Mount Transistor 1 4-SMD, Gull Wing 4-SMD 80mA
HCPL4502 HCPL4502 Fairchild Semiconductor OPTOISO 2.5KV TRANS W/BASE 8DIP Na stanie45390 pcs - 2500Vrms - 20V 1.45V 25 mA 19% @ 16mA 50% @ 16mA 450ns, 300ns - Tube - DC -55°C ~ 100°C Through Hole Transistor with Base 1 8-DIP (0.300", 7.62mm) 8-DIP 8mA
VOS615A-3X001T VOS615A-3X001T Vishay Semiconductor Opto Division OPTOISOLATOR 3.75KV TRANS 4-SSOP Na stanie234670 pcs 400mV 3750Vrms 3µs, 4µs 80V 1.2V 50 mA 100% @ 10mA 200% @ 10mA 5µs, 5µs VOS615 Tape & Reel (TR) - DC -55°C ~ 110°C Surface Mount Transistor 1 4-SOIC (0.173", 4.40mm Width) 4-SSOP 50mA
6N138-X007T 6N138-X007T Vishay Semiconductor Opto Division OPTOISO 5.3KV DARL W/BASE 8SMD Na stanie5270 pcs - 5300Vrms - 7V 1.4V 25 mA 300% @ 1.6mA - 2µs, 2µs 6N138 Tape & Reel (TR) - DC -55°C ~ 100°C Surface Mount Darlington with Base 1 8-SMD, Gull Wing 8-SMD 60mA
PS2706-1-F3-A PS2706-1-F3-A Renesas Electronics America Inc OPTOISOLATOR 3.75KV DARL 4SMD Na stanie55750 pcs 1V 3750Vrms 200µs, 200µs 40V 1.1V 50 mA 200% @ 1mA - - PS2706 Tape & Reel (TR) NEPOC AC, DC -55°C ~ 100°C Surface Mount Darlington 1 4-SMD, Gull Wing 4-SOP 200mA
VOL618A-3T VOL618A-3T Vishay Semiconductor Opto Division OPTOISOLATOR 5KV TRANS 4-LSOP Na stanie295810 pcs 400mV 5000Vrms 3.5µs, 5µs 80V 1.16V 60 mA 100% @ 1mA 200% @ 1mA 6µs, 5.5µs VOL618 Tape & Reel (TR) - DC -55°C ~ 110°C Surface Mount Transistor 1 4-SMD, Gull Wing 4-SOP 50mA
1...32333435363738...68
Allelco
O nas
Historia
Certyfikaty
Rekrutacja
Zasady
Zasady i Warunki
Polityka prywatności
Polityka Cookie
Usługi
Śledzenie zamówienia
Powrót i wymiana
Często Zadawane Pytania
Skontaktuj się z nami
Zamówienie
Wysyłka i dostawa
Metody Płatności
Moje konto
BlogiGorące częściZmień językAktualnościMapa witryny
Skontaktuj się z nami
Adres siedziby głównej:
Pokój C 13/F Harvard Commercial Building
105-111 Thomson Road Wan Chai
Hongkong
Service Tel: +852-91464856
E -mail usługi: info@allelco.com
Podążaj za nami
Copyright © 2012-2023 AllelcoElec.com.
Wszelkie prawa zastrzeżone.
0 RFQ
Wózek sklepowy (0 Items)
To jest puste.
Prześlij zapytanie
Porównaj listę (0 Items)
To jest puste.
Informacja zwrotna

Twoja opinia ma znaczenie!W Allelco cenimy wrażenia użytkownika i staramy się go stale ulepszać.
Proszę udostępnić nam swoje komentarze za pośrednictwem naszego formularza opinii, a my odpowiemy niezwłocznie.
Dziękujemy za wybranie Allelco.

Temat
E-mail
Komentarze
Captcha
Przeciągnij lub kliknij, aby przesłać plik
Przesyłanie pliku
Rodzaje: .xls, .xlsx, .doc, .docx, .jpg, .png i .pdf.
Max Rozmiar pliku: 10 MB