规格:包装 散装 ,
专业代理销售st(意法)全系列产品
关于我们
|
联系我们
库存查询
ST产品选型
产品
制造商
联系我们
美国1号分类选型
新加坡2号分类选型
英国10号分类选型
英国2号分类选型
日本5号分类选型
在本站结果里搜索:
热门搜索词:
电容器
Vicor
MXP7205VW
STM32F103C8T6
1379658-1
UVX
美国1号仓库
产品分类
(1620989)
音频产品
(3443)
电缆,电线
(302)
电缆,电线 - 管理
(2855)
电容器
(163549)
电路保护
(35315)
计算机,办公室 - 元件,配件
(71)
连接器,互连器件
(910413)
晶体,振荡器,谐振器
(17477)
分立半导体产品
(29143)
滤波器
(3828)
硬件,紧固件,配件
(1280)
电感器,线圈,扼流圈
(17704)
集成电路(IC)
(4304)
隔离器
(361)
套件
(227)
存储卡,模块
(37)
网络解决方案
(787)
光电元件
(12558)
电位计,可变电阻器
(9055)
电源 - 板安装
(198764)
电源 - 外部/内部(外接)
(1134)
继电器
(11362)
电阻器
(153998)
射频/IF 和 RFID
(6341)
传感器,变送器
(8705)
静电控制,ESD,无尘室产品
(5)
开关
(25979)
胶带,粘合剂
(592)
测试与测量
(259)
工具
(3)
变压器
(1138)
筛选品牌
3M(10556)
3M (TC)(3060)
4D Systems Pty Ltd(2)
Aavid Thermalloy(7)
Abracon LLC(3174)
Acme Electric/Amveco/Actown(5)
Adafruit Industries LLC(116)
Adesto Technologies(18)
Advanced Linear Devices Inc.(6)
Advantech Corp(7)
Aearo Technologies, LLC(4134)
Aeroflex Metelics, Division of MACOM(240)
AKM Semiconductor Inc.(21)
Alcatel Components(1)
Allegro MicroSystems, LLC(269)
Alliance Memory, Inc.(12)
Alpha & Omega Semiconductor Inc.(16)
Alpha Wire(114)
Altera(1)
American Electrical Inc.(121)
American Technical Ceramics(1)
Ametherm(497)
Amgis, LLC(111)
Amphenol Advanced Sensors(23325)
Amphenol Aerospace Operations(16977)
Amphenol Anytek(25885)
Amphenol Commercial Products(117184)
Amphenol FCI(46708)
Amphenol Industrial Operations(15493)
Amphenol LTW(75)
Amphenol PCD(6094)
Amphenol RF Division(3556)
Amphenol Sine Systems Corp(1297)
Amphenol SV Microwave(5087)
Ampleon USA Inc.(60)
Amprobe(6)
ams(20)
Analog Devices Inc.(405)
Antenova(33)
APEM Inc.(870)
Apex Microtechnology(27)
API Delevan Inc.(8288)
API Technologies Corp(1394)
Arduino(4)
Aries Electronics(5022)
Artaflex Inc.(7)
Artesyn Embedded Technologies(647)
Assmann WSW Components(2277)
ATOP Technologies(5)
AVX Corp/Kyocera Corp(2956)
AVX Corporation(4474)
B&B SmartWorx, Inc.(380)
Bel Fuse Inc.(82)
Bel Inc.(1519)
Bel Power Solutions(10649)
Belden Inc.(10)
Bivar Inc.(422)
Bluetechnix GmbH(2)
Bourns Inc.(11091)
Broadcom Limited(1659)
Bud Industries(4)
Bulgin(2328)
C&K(7093)
Caddock Electronics Inc.(51)
Cal Test Electronics(190)
Cantherm(287)
Cardinal Components Inc.(732)
Carling Technologies(87)
CEL(240)
Central Semiconductor Corp(891)
CH Products(102)
Cherry Americas LLC(20)
Chip Quik Inc.(1)
Cinch Connectivity Solutions(4434)
Cinch Connectivity Solutions AIM-Cambridge(1469)
Cinch Connectivity Solutions Johnson(629)
Cinch Connectivity Solutions Midwest Microwave(344)
Cinch Connectivity Solutions Semflex(125)
Cinch Connectivity Solutions Trompeter(442)
Cinch Connectivity Solutions Vitelec(2095)
Cirrus Logic Inc.(35)
Citizen Finedevice Co Ltd(340)
CNC Tech(114)
Comchip Technology(403)
Comus International(41)
Conec(1690)
ConnectBlue(4)
Connor-Winfield(30)
Conxall/Switchcraft(2922)
Copal Electronics Inc.(664)
Copeland Communications Inc.(2)
Cornell Dubilier Electronics (CDE)(16186)
Coto Technology(57)
CR Magnetics Inc.(496)
Cree Inc.(797)
Cree/Wolfspeed(13)
Crouzet(461)
Crydom Co.(4207)
Crystek Corporation(128)
C-TON Industries(3)
CTS Electrocomponents(1891)
CTS Resistor Products(444)
CTS Thermal Management Products(85)
CTS-Frequency Controls(37)
CUI Inc.(1661)
Curtis Industries(19400)
Curtis Instruments Inc.(2)
CW Industries(699)
Cynergy 3(115)
Cypress Semiconductor Corp(7)
Delta Electronics(318)
Desco(6)
DFRobot(5)
Dialight(3328)
Digi International(451)
Digi-Key Kit(2)
Digilent, Inc.(6)
Diodes Incorporated(1388)
DLP Design Inc.(9)
Dynastream Innovations Inc.(2)
Eaton(5871)
ebm-papst Inc.(11)
Echelon Corporation(3)
ECS Inc.(3008)
EDAC Inc.(6897)
Electroswitch(381)
Elna America(168)
Embedded Artists(1)
EPCOS (TDK)(12557)
EPSON(111)
Epson Electronics America Inc-Semiconductor Div(179)
ERP Power, LLC(5)
Essentra Components(1116)
E-Switch(1874)
E-T-A(35)
Ethertronics Inc.(17)
Everlight Electronics Co Ltd(901)
Exar Corporation(126)
Excelitas Technologies(31)
E-Z-Hook(138)
Fairchild/Micross Components(2377)
Fairchild/ON Semiconductor(506)
FEIG Electronic(37)
Finisar Corporation(18)
Flexipanel(1)
Fox Electronics(46)
FTDI, Future Technology Devices International Ltd(11)
GC Electronics(7)
GE Critical Power(649)
GeneSiC Semiconductor(1933)
Glenair(4)
Global Power Technologies Group(97)
Grayhill Inc.(702)
Greenlee Communications(107)
Hammond Manufacturing(679)
HARTING(8265)
Harwin Inc.(3877)
HellermannTyton(570)
Heraeus Sensor Technology USA(29)
Hirose Electric Co Ltd(7635)
Holmate Technology Corp. (Holtek)(1)
Honeywell Microelectronics & Precision Sensors(16)
Honeywell Sensing and Control EMEA(994)
Honeywell Sensing and Productivity Solutions(216)
Honeywell Sensing and Productivity Solutions T&M(481)
I.O. Interconnect(82)
IDT, Integrated Device Technology Inc(168)
Illinois Capacitor(3764)
Industrial Fiberoptics(31)
Infineon Technologies(279)
Infineon Technologies Industrial Power and Controls Americas(270)
Inolux(34)
Intel(2)
Interlink Electronics(1)
Intersil(22)
Inventek Systems(10)
Inventus Power(1)
Isocom Components 2004 LTD(6)
ISSI, Integrated Silicon Solution Inc(41)
ITT Cannon, LLC(78312)
IXYS(1261)
IXYS Integrated Circuits Division(3)
JAE Electronics(1707)
JKL Components Corp.(24)
Johanson Technology Inc.(14)
Jonard Tools(13)
JST Sales America Inc.(1543)
Judco Manufacturing Inc.(50)
KEMET(26250)
Keystone Electronics(993)
Kingbright(689)
Kionix Inc.(210)
Klein Tools, Inc.(18)
Knowles(574)
Knowles Dielectric Labs(9)
Knowles Novacap(286)
Knowles Voltronics(60)
Laird - Embedded Wireless Solutions(41)
Laird Technologies EMI(26)
Laird Technologies IAS(2690)
Laird-Signal Integrity Products(50)
Lattice Semiconductor Corporation(72)
Leader Tech Inc.(44)
LED Engin Inc.(7)
LEDdynamics Inc.(41)
LEM USA Inc.(119)
LEMO(6187)
Linear Technology(59)
Linx Technologies Inc.(270)
Lite-On Inc.(511)
Littelfuse Inc.(11956)
Lumberg Automation(14)
Lumex Opto/Components Inc.(1098)
Luminus Devices Inc.(4)
Luna Optoelectronics(435)
M/A-Com Technology Solutions(116)
Magnasphere Corp(1)
Mallory Sonalert Products Inc.(1797)
Marktech Optoelectronics(339)
Maxim Integrated(204)
Maxwell Technologies Inc.(39)
MEC Switches(321)
Melexis Technologies NV(188)
MG Chemicals(4)
Micro Commercial Co(333)
Microchip Technology(765)
Micron Technology Inc.(520)
Microsemi Corporation(16137)
Microsemi Solutions Sdn Bhd.(9496)
MikroElektronika(8)
Mill-Max Manufacturing Corp.(5932)
Molex - Temp Flex(20947)
Molex Connector Corporation(3738)
Molex, LLC(646)
Monolithic Power Systems Inc.(1)
MPD (Memory Protection Devices)(23)
Mueller Electric Co(97)
Multi-Tech Systems Inc.(63)
Murata Electronics North America(2297)
Murata Power Solutions Inc.(275)
NDK America, Inc.(2)
Nearson Inc.(75)
NessCap Co Ltd(20)
Newava Technology Inc.(16)
Nexperia USA Inc.(2)
Nichicon(12206)
Nidec Copal Electronics(895)
NimbeLink, LLC(12)
NJR Corporation/NJRC(43)
NKK Switches(4638)
NorComp Inc.(765)
NVE Corp/Isolation Products(2)
NXP USA Inc.(387)
Ohmite(12417)
Olimex LTD(2)
Omron Automation and Safety(7935)
Omron Electronics Inc-EMC Div(2047)
ON Semiconductor(857)
On Shore Technology Inc.(12266)
Oplink Communications, LLC(8670)
Opto Diode Corp(44)
OSRAM Opto Semiconductors Inc.(300)
Panasonic - ATG(2814)
Panasonic - BSG(936)
Panasonic - DTG(343)
Panasonic Electric Works(240)
Panasonic Electronic Components(2344)
Panasonic Industrial Automation Sales(7323)
Panduit Corp(7538)
Parallax Inc.(35)
Peerless by Tymphany(198)
Peregrine Semiconductor(1)
Phihong USA(2)
Phoenix Contact(18659)
Pomona Electronics(454)
Power Integrations(23)
Powerex Inc.(2023)
Preci-Dip(26641)
Precision Electronics Corporation(154)
Proant AB(12)
PUI Audio, Inc.(499)
PULS, LP(11)
Pulse Electronics Network(263)
Pulse Electronics Power(108)
PulseLarsen Antennas(100)
QT Brightek (QTB)(8)
Qualcomm (RF360 - A Qualcomm & TDK Joint Venture)(60)
Qualtek(473)
Quatech-Division of B&B Electronics(353)
RAFI USA(69)
Recom Power(265)
Red Lion Controls(117)
Renesas Electronics America(57)
RF Digital Corporation(3)
RF Solutions(191)
RFMD(16)
Riedon(693)
Rohm Semiconductor(325)
Rubycon(7352)
Sagrad Inc.(12)
Samtec Inc.(151907)
Sanken(508)
SANYO Semiconductor (U.S.A) Corporation(2)
Schaffner EMC Inc.(843)
Schott Corporation(6)
Schurter Inc.(3921)
Seeed Technology Co., Ltd(76)
Semtech Corporation(1198)
Seoul Semiconductor Inc.(5)
Sharp Microelectronics(349)
Signal Transformer(212)
SII Semiconductor Corporation(361)
Silicon Labs(86)
Singatron Enterprises Co Ltd(9)
Siretta Ltd(198)
SiTIME(8608)
Skyetek Inc(13)
Skyworks Solutions Inc.(38)
SL Power Electronics Manufacture of Condor/Ault Brands(7)
SMC Diode Solutions(334)
Soberton Inc.(32)
Socle Technology Corporation(4)
Souriau(32112)
SparkFun Electronics(42)
Sprague-Goodman(934)
Stackpole Electronics Inc.(2730)
Standex-Meder Electronics(33)
Stanley Electric Co(78)
Steute Wireless(14)
Stewart Connector(82)
STMicroelectronics(293)
Sullins Connector Solutions(12542)
Sumida America Components Inc.(422)
SunLED(209)
Sunon Fans(5)
Susumu(145)
Swissbit(1)
Switchcraft Inc.(2488)
Synapse Wireless(7)
Taitien(146)
Taiwan Semiconductor Corporation(1520)
Taiyo Yuden(1312)
Tallysman Wireless Inc.(71)
Talon Communications, Inc.(2)
Tamura(395)
Taoglas Limited(281)
TDK Corporation(8840)
TDK-Lambda Americas Inc.(814)
TE Connectivity Aerospace, Defense and Marine(13038)
TE Connectivity ALCOSWITCH Switches(60833)
TE Connectivity AMP Connectors(26828)
TE Connectivity Corcom Filters(9458)
TE Connectivity Deutsch Connectors(4004)
TE Connectivity Measurement Specialties(2171)
TE Connectivity Passive Product(9989)
TE Connectivity Potter & Brumfield Relays(3627)
TE Connectivity Raychem Cable Protection(12287)
Telit(1)
Tensility International Corp(55)
Texas Instruments(515)
t-Global Technology(19)
Thales Visionix, Inc.(4)
ThingMagic, a JADAK brand(7)
Thomas Research Products(31)
Toko America Inc.(39)
Toshiba Semiconductor and Storage(500)
Transphorm(1)
Trenz Electronic GmbH(1)
Triad Magnetics(411)
Tripp Lite(19)
TRP Connector B.V.(95)
TT Electronics/BI(480)
TT Electronics/BI Magnetics(268)
TT Electronics/IRC(23)
TT Electronics/Optek Technology(1247)
TT Electronics/Welwyn(190)
Tusonix a Subsidiary of CTS Electronic Components(511)
TXC CORPORATION(308)
United Chemi-Con(10341)
US Relays and Technology, Inc.(1)
US Sensor(574)
Vector Electronics(14)
Vicor Corporation(194381)
Vishay BC Components(7296)
Vishay Beyschlag(24718)
Vishay Dale(111580)
Vishay Electro-Films(10095)
Vishay Foil Resistors (Division of Vishay Precision Group)(14095)
Vishay Huntington Electric Inc.(3457)
Vishay Semiconductor Diodes Division(1366)
Vishay Semiconductor Opto Division(859)
Vishay Semiconductor Opto Division(646)
Vishay Sfernice(1959)
Vishay Siliconix(4806)
Vishay Spectrol(478)
Vishay Sprague(171)
Vishay Thin Film(158)
Vishay Vitramon(189)
Visual Communications Company - VCC(606)
Volgen America/Kaga Electronics USA(24)
Walsin Technology Corporation(22)
WeEn Semiconductors(30)
Weidmuller(19729)
Winchester Electronics(542)
WIZnet(9)
Wurth Electronics Inc.(1134)
Wurth Electronics Midcom(5)
XP Power(206)
Yageo(2135)
ZF Electronics(33)
Zilog(1)
重新选择
规格选型正在加载中...
在结果中搜索词:
以下搜索结果
参考图片
制造商 / 描述 / 型号 / 仓库库存编号 / 别名
PDF
操作
On Shore Technology Inc.
TERM BLOCK HDR 6POS VERT 5.08MM
详细描述:6 位 端接块 接头,公引脚,带罩(4 面) 0.200"(5.08mm) 垂直式 焊接
型号:
EDSTLZ956/6
仓库库存编号:
ED2449-ND
别名:ED2449
EDSTLZ9566
规格:包装 散装 ,
无铅
搜索
Vishay Dale
RES CHAS MNT 2.5K OHM 1% 12.5W
详细描述:±1% 12.5W Wirewound Chassis Mount Resistor
型号:
RH0102K500FE02
仓库库存编号:
RHRB-2.5K-ND
别名:RHRB-2.5K
规格:包装 散装 ,
无铅
搜索
HARTING
CONN D-SUB RCPT 9POS R/A SOLDER
详细描述:9 位 D-Sub 插座,母形插口 连接器
型号:
09661126602
仓库库存编号:
1195-2509-ND
别名:1195-2509
9661126602
规格:包装 散装 ,
无铅
搜索
Nichicon
CAP ALUM 1200UF 20% 100V SNAP
详细描述:铝电解电容器 径向,Can - 卡入式 105°C 时为 5000 小时
型号:
LGY2A122MELB25
仓库库存编号:
493-8725-ND
别名:493-8725
LGY2A122MELB25-ND
规格:包装 散装 ,
无铅
搜索
Phoenix Contact
TERM BLOCK HDR 14POS VERT 5.08MM
详细描述:14 位 端接块 接头,公引脚,带罩(2 面) 0.200"(5.08mm) 垂直式 通孔
型号:
1758131
仓库库存编号:
277-6514-ND
别名:1758131-ND
277-6514
MSTBV2,5/14-G-5,08
规格:包装 散装 ,
无铅
搜索
Nichicon
CAP ALUM 120UF 20% 450V SNAP
详细描述:铝电解电容器 径向,Can - 卡入式 105°C 时为 2000 小时
型号:
LGG2W121MELA25
仓库库存编号:
493-8219-ND
别名:493-8219
LGG2W121MELA25-ND
规格:包装 散装 ,
无铅
搜索
Phoenix Contact
TERM BLOCK HDR 5POS 90DEG 5.08MM
详细描述:5 位 端接块 接头,公引脚,带罩(4 面) 0.200"(5.08mm) 90°,直角 通孔
型号:
1776537
仓库库存编号:
277-5957-ND
别名:1776537-ND
277-5957
MSTB2,5/5-GF-5,08
规格:包装 散装 ,
无铅
搜索
Souriau
CONTACT SOCKET 18-24AWG CRIMP
详细描述:Socket Contact 18-24 AWG Size 20 Crimp Gold
型号:
CM10SC10MQ
仓库库存编号:
SOU1963-ND
别名:CM10SC10MQ-ND
规格:包装 散装 ,
无铅
搜索
Rubycon
CAP ALUM 150UF 20% 450V SNAP
详细描述:铝电解电容器 径向,Can - 卡入式 105°C 时为 5000 小时
型号:
450VXG150MEFCSN30X25
仓库库存编号:
1189-2014-ND
别名:1189-2014
450VXG150MEFCSN30X25-ND
规格:包装 散装 ,
无铅
搜索
Nichicon
CAP ALUM 27000UF 20% 16V SNAP
详细描述:铝电解电容器 径向,Can - 卡入式 105°C 时为 5000 小时
型号:
LGY1C273MELB40
仓库库存编号:
493-8595-ND
别名:493-8595
LGY1C273MELB40-ND
规格:包装 散装 ,
无铅
搜索
Pomona Electronics
SHEATH BANANA PLUG 18-22AWG RED
详细描述:Banana Plug Connector Crimp or Solder Red
型号:
4933-2
仓库库存编号:
501-1592-ND
别名:4933-2-ND
501-1592
5935013767496
规格:包装 散装 ,
无铅
搜索
Cinch Connectivity Solutions Vitelec
CONN BNC JACK STR 50 OHM SOLDER
详细描述:面板安装 BNC 连接器 插孔,母形插口 50 欧姆 焊杯
型号:
VBI1094A
仓库库存编号:
1427-1031-ND
别名:1427-1031
规格:包装 散装 ,
无铅
搜索
Cornell Dubilier Electronics (CDE)
CAP ALUM 33000UF 20% 25V SNAP
详细描述:铝电解电容器 径向,Can - 卡入式 18 毫欧 @ 120Hz 85°C 时为 3000 小时
型号:
SLPX333M025H4P3
仓库库存编号:
338-1614-ND
别名:338-1614
SLPX333M025H4P3-ND
规格:包装 散装 ,
无铅
搜索
Pomona Electronics
CONN ADAPT PLUG TO JACK BNC
详细描述:Adapter Coaxial Connector BNC Plug, Male Pin To BNC Jack, Female Socket (2) 75 Ohm
型号:
6739
仓库库存编号:
501-1149-ND
别名:501-1149
规格:包装 散装 ,
无铅
搜索
Pomona Electronics
SHEATH BANANA JACK 18-22AWG BLK
详细描述:Banana Jack Connector Standard Banana Crimp or Solder Black
型号:
4934-0
仓库库存编号:
501-1523-ND
别名:4934-0-ND
501-1523
规格:包装 散装 ,
无铅
搜索
Pomona Electronics
SHEATH BANANA PLUG 18-22AWG BLK
详细描述:Banana Plug Connector Crimp or Solder Black
型号:
4933-0
仓库库存编号:
501-1500-ND
别名:4933-0-ND
501-1500
规格:包装 散装 ,
无铅
搜索
NKK Switches
SWITCH TOGGLE SPDT 0.4VA 28V
详细描述:Toggle Switch SPDT Panel Mount
型号:
M2019SS1G01
仓库库存编号:
360-1826-ND
别名:360-1122
360-1122-ND
360-1826
M2019SS1G01-RO
规格:包装 散装 ,
无铅
搜索
Phoenix Contact
TERM BLOCK HDR 8POS VERT 7.62MM
详细描述:8 位 端接块 接头,公引脚,带罩(4 面) 0.300"(7.62mm) 垂直式 通孔
型号:
1766835
仓库库存编号:
277-6281-ND
别名:1766835-ND
277-6281
GMSTBVA2,5/8-G-7,62
规格:包装 散装 ,
无铅
搜索
Pomona Electronics
CONN BNC RCPT STR 75 OHM SOLDER
详细描述:面板安装 BNC 连接器 插座,母插槽 75 欧姆 焊杯
型号:
6745
仓库库存编号:
501-1153-ND
别名:501-1153
规格:包装 散装 ,
无铅
搜索
NKK Switches
SWITCH TOGGLE SPDT 0.4VA 28V
详细描述:Toggle Switch SPDT Panel Mount
型号:
M2018SS1G01
仓库库存编号:
360-1823-ND
别名:360-1121
360-1121-ND
360-1823
M2018SS1G01-RO
规格:包装 散装 ,
无铅
搜索
NKK Switches
SWITCH PUSH SPDT 0.4VA 28V
详细描述:Pushbutton Switch SPDT Standard Panel Mount, Rear
型号:
EB2011G-BA
仓库库存编号:
EB2011G-BA-ND
别名:EB2011G-BA-RO
EB2011G-BA-RO-ND
EB2011GBA
规格:包装 散装 ,
无铅
搜索
Assmann WSW Components
CABLE MOD COIL 8COND BLACK 5'
详细描述:8 Conductor Modular Coil Cable Black 5' (1.52m)
型号:
AT-K-C-26-8-B/5
仓库库存编号:
A0582RC-ND
别名:A0582RC
AT-K-C-26-8-B/5-R
ATKC268B5R
规格:包装 散装 ,
无铅
搜索
Switchcraft Inc.
CONN RCPT 3POS MALE IN-LINE #20
详细描述:3 位置 圆形连接器 插座,公形引脚 压接 金
型号:
EN3L3MCX
仓库库存编号:
SC1515-ND
别名:EN3L3MC
EN3L3MC-ND
EN3L3MCX-ND
SC1498
SC1498-ND
SC1515
规格:包装 散装 ,
无铅
搜索
Vishay Huntington Electric Inc.
RES CHAS MNT 50 OHM 10% 20W
详细描述:±10% 20W Wirewound Chassis Mount Resistor
型号:
FSOT2011E50R00KE
仓库库存编号:
FSOT20-50-ND
别名:FSOT20-50
FSOT2011E50R00KE-ND
FSOT205010
规格:包装 散装 ,
无铅
搜索
Nichicon
CAP ALUM 12000UF 20% 35V SNAP
详细描述:铝电解电容器 径向,Can - 卡入式 85°C 时为 3000 小时
型号:
LLS1V123MELB
仓库库存编号:
493-7298-ND
别名:493-7298
LLS1V123MELB-ND
规格:包装 散装 ,
无铅
搜索
4669
4670
4671
4672
4673
4674
4675
4676
4677
4678
邮箱:
sales@szcwdz.com
Q Q:
800152669
手机网站:
m.szcwdz.com
美国1号品牌选型
新加坡2号品牌选型
英国2号品牌选型
英国10号品牌选型
日本5号品牌选型
st(意法)简介
|
st产品
|
st动态
|
产品应用
|
st选型手册
Copyright © 2017
www.st-ic.com
All Rights Reserved. 技术支持:
电子元器件
ICP备案证书号:
粤ICP备11103613号