DRV5053EAQLPG,2473006,霍尔效应传感器, 双极性, 2.3 mA, TO-92, 3 引脚, 2.5 V, 38 V,TEXAS INSTRUMENTS
laird代理商
专业代理销售laird(莱尔德)全系列产品-新加坡2号仓库
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:28B0500-100  IRF9540  保险丝  amphenol  4.7μF 63V 5mm  P沟道 8ohm SOT-23  2581138

DRV5053EAQLPG - 

霍尔效应传感器, 双极性, 2.3 mA, TO-92, 3 引脚, 2.5 V, 38 V

TEXAS INSTRUMENTS DRV5053EAQLPG
声明:图片仅供参考,请以实物为准!
制造商产品编号:
DRV5053EAQLPG
仓库库存编号:
2473006
技术数据表:
(EN)
订购热线: 400-900-3095  0755-21000796, QQ:800152669, Email:sales@szcwdz.com
您可通过官网直接下单选定型号并完成支付(请确保型号准确),销售团队将同步审核;线下合同交易模式同步开放,具体流程请联系我司业务代表。
  美国1号仓库    仓库直销,订单金额100元起订,满300元含运,满500元含税运,有单就有优惠,量大更优惠,支持原厂订货
型号 制造商 描述 实时库存 起订量 实时单价
(含税)
货期
(工作日)
操作
DRV5053EAQLPG
库存编号:2156-DRV5053EAQLPG-ND
Rochester Electronics LLC DRV5053 2.5 TO 38 V BIPOLAR OUTP186323
1154起订
1154+
¥3.24
6-10天购买 购买
,"cvcgetWeb":["c3JjPTEmUE49MjE1Ni1EUlY1MDUzRUFRTFBHLU5E"],"cvcModel":["DRV5053EAQLPG"],"cvcBrand":[" Rochester Electronics LLC "],"cvcNumberAll":["1154,"],"cvcPriceAll":["3.24,"],"maxnum":["186323"],"minnum":["1154"],"mytime":["6-10天"],"haveiscanbuy":["yes"],

查看资料
DRV5053EAQLPGMQ1
库存编号:2156-DRV5053EAQLPGMQ1-ND
Rochester Electronics LLC DRV5053-Q1 AUTOMOTIVE, 2.7 V TO32877
944起订
944+
¥3.99
6-10天购买 购买
,"cvcgetWeb":["c3JjPTEmUE49MjE1Ni1EUlY1MDUzRUFRTFBHTVExLU5E"],"cvcModel":["DRV5053EAQLPGMQ1"],"cvcBrand":[" Rochester Electronics LLC "],"cvcNumberAll":["944,"],"cvcPriceAll":["3.99,"],"maxnum":["32877"],"minnum":["944"],"mytime":["6-10天"],

查看资料
DRV5053EAQLPGQ1
库存编号:2156-DRV5053EAQLPGQ1-ND
Rochester Electronics LLC DRV5053-Q1 AUTOMOTIVE, 2.7 V TO21600
944起订
944+
¥3.99
6-10天购买 购买
,"cvcgetWeb":["c3JjPTEmUE49MjE1Ni1EUlY1MDUzRUFRTFBHUTEtTkQ="],"cvcModel":["DRV5053EAQLPGQ1"],"cvcBrand":[" Rochester Electronics LLC "],"cvcNumberAll":["944,"],"cvcPriceAll":["3.99,"],"maxnum":["21600"],"minnum":["944"],"mytime":["6-10天"],

查看资料
DRV5053EAQLPGM
库存编号:296-38604-1-ND
Texas Instruments SENSOR HALL EFFECT ANALOG TO92-31116
1起订
1+
5+
10+
25+
50+
100+
500+
1000+
¥12.34
¥10.87
¥10.31
¥9.66
¥9.21
¥8.8
¥7.99
¥7.68
6-10天购买 购买
,"cvcgetWeb":["c3JjPTEmUE49Mjk2LTM4NjA0LTEtTkQ="],"cvcModel":["DRV5053EAQLPGM"],"cvcBrand":[" Texas Instruments "],"cvcNumberAll":["1,5,10,25,50,100,500,1000,"],"cvcPriceAll":["12.34,10.87,10.31,9.66,9.21,8.8,7.99,7.68,"],"maxnum":["1116"],"minnum":["1"],"mytime":["6-10天"],

查看资料
DRV5053EAQLPG
库存编号:296-38603-ND
Texas Instruments SENSOR HALL EFFECT ANALOG TO92-3709
1起订
1+
5+
10+
25+
50+
100+
500+
1000+
5000+
¥8.48
¥7.45
¥7.06
¥6.6
¥6.28
¥5.99
¥5.41
¥5.19
¥4.76
6-10天购买 购买
,"cvcgetWeb":["c3JjPTEmUE49Mjk2LTM4NjAzLU5E"],"cvcModel":["DRV5053EAQLPG"],"cvcBrand":[" Texas Instruments "],"cvcNumberAll":["1,5,10,25,50,100,500,1000,5000,"],"cvcPriceAll":["8.48,7.45,7.06,6.6,6.28,5.99,5.41,5.19,4.76,"],"maxnum":["709"],"minnum":["1"],"mytime":["6-10天"],"haveiscanbuy":["yes"],

查看资料
DRV5053EAQLPGQ1
库存编号:296-DRV5053EAQLPGQ1-ND
Texas Instruments SENSOR HALL EFFECT ANALOG TO92-3376
1起订
1+
5+
10+
25+
50+
100+
500+
1000+
5000+
¥16.32
¥14.41
¥13.7
¥12.85
¥12.28
¥11.75
¥10.69
¥10.3
¥9.51
6-10天购买 购买
,"cvcgetWeb":["c3JjPTEmUE49Mjk2LURSVjUwNTNFQVFMUEdRMS1ORA=="],"cvcModel":["DRV5053EAQLPGQ1"],"cvcBrand":[" Texas Instruments "],"cvcNumberAll":["1,5,10,25,50,100,500,1000,5000,"],"cvcPriceAll":["16.32,14.41,13.7,12.85,12.28,11.75,10.69,10.3,9.51,"],"maxnum":["376"],"minnum":["1"],"mytime":["6-10天"],

查看资料
PDRV5053EAQLPG
库存编号:PDRV5053EAQLPG-ND
Texas Instruments SENSOR HALL EFFECT ANALOG TO92-30
2000起订
2000+
¥5.37
6-10天询价 询价
查看资料
DRV5053EAQLPGM
库存编号:296-38604-3-ND
Texas Instruments SENSOR HALL EFFECT ANALOG TO92-30
3000起订
3000+
6000+
9000+
15000+
21000+
30000+
¥3.84
¥3.7
¥3.63
¥3.53
¥3.48
¥3.42
6-10天询价 询价
查看资料
DRV5053EAQLPGMQ1
库存编号:296-40057-1-ND
Texas Instruments SENSOR HALL EFFECT ANALOG TO92-30
1起订
1+
¥9.72
6-10天询价 询价
查看资料
DRV5053EAQLPGMQ1
库存编号:296-40057-3-ND
Texas Instruments SENSOR HALL EFFECT ANALOG TO92-30
3000起订
3000+
¥4.61
6-10天询价 询价
查看资料
  美国2号仓库    仓库直销,订单金额100元起订,满300元含运,满500元含税运,有单就有优惠,量大更优惠,支持原厂订货
型号 制造商 描述 实时库存 起订量 实时单价
(含税)
货期
(工作日)
操作
DRV5053EAQLPGM
库存编号:595-DRV5053EAQLPGM
Texas Instruments Board Mount Hall Effect / Magnetic Sensors 2.5 to 38V Analog Bi pol Hall Eff Snsr A 595-DRV5053EAQLPG9842
1起订
1+
5+
10+
50+
100+
500+
1000+
2000+
3000+
¥8.16
¥6.84
¥6.35
¥5.36
¥4.97
¥4.2
¥3.92
¥3.64
¥3.5
6-10天购买 购买
,"cvcgetWeb":["c3JjPTMmUE49NTk1LURSVjUwNTNFQVFMUEdN"],"cvcModel":["DRV5053EAQLPGM"],"cvcBrand":[" Texas Instruments "],"cvcNumberAll":["1,5,10,50,100,500,1000,2000,3000,"],"cvcPriceAll":["8.16,6.84,6.35,5.36,4.97,4.2,3.92,3.64,3.5,"],"maxnum":["9842"],"minnum":["1"],"mytime":["6-10天"],
DRV5053EAQLPG
库存编号:595-DRV5053EAQLPG
Texas Instruments Board Mount Hall Effect / Magnetic Sensors 2.5 to 38V Analog Bi pol Hall Eff Snsr A 595-DRV5053EAQLPGM3099
1起订
1+
5+
10+
50+
100+
500+
5000+
¥8.04
¥6.94
¥6.27
¥5.51
¥5.12
¥5.03
¥3.61
6-10天购买 购买
,"cvcgetWeb":["c3JjPTMmUE49NTk1LURSVjUwNTNFQVFMUEc="],"cvcModel":["DRV5053EAQLPG"],"cvcBrand":[" Texas Instruments "],"cvcNumberAll":["1,5,10,50,100,500,5000,"],"cvcPriceAll":["8.04,6.94,6.27,5.51,5.12,5.03,3.61,"],"maxnum":["3099"],"minnum":["1"],"mytime":["6-10天"],"haveiscanbuy":["yes"],
DRV5053EAQLPGQ1
库存编号:595-DRV5053EAQLPGQ1
Texas Instruments Board Mount Hall Effect / Magnetic Sensors Auto Analog-Bipolar Hall Effect Sensor A 595-DRV5053EAQLPGMQ10
1起订
1+
5+
10+
50+
100+
500+
1000+
2000+
5000+
¥12.41
¥10.71
¥9.73
¥8.81
¥8.34
¥7.36
¥6.71
¥6.53
¥6.16
6-10天询价 询价
DRV5053EAQLPGMQ1
库存编号:595-DRV5053EAQLPGMQ1
Texas Instruments Board Mount Hall Effect / Magnetic Sensors Auto Analog-Bipolar Hall Effect Sensor A 595-DRV5053EAQLPGQ10
3000起订
3000+
¥4.37
6-10天询价 询价
  新加坡3号仓库    仓库直销,订单金额100元起订,满300元含运,满500元含税运,有单就有优惠,量大更优惠,支持原厂订货
型号 制造商 描述 实时库存 起订量 实时单价
(含税)
货期
(工作日)
操作
DRV5053EAQLPGM
库存编号:3124148
Texas Instruments HALL EFFECT, BIPOLAR, TO-92-349
1起订
1+
10+
100+
500+
1000+
2500+
5000+
¥10.76
¥9.66
¥7.95
¥7.09
¥6.24
¥5.01
¥3.91
1-2周购买 购买
,"cvcgetWeb":["c3JjPTQmUE49MzEyNDE0OA=="],"cvcModel":["DRV5053EAQLPGM"],"cvcBrand":[" Texas Instruments "],"cvcNumberAll":["1,10,100,500,1000,2500,5000,"],"cvcPriceAll":["10.76,9.66,7.95,7.09,6.24,5.01,3.91,"],"maxnum":["49"],"minnum":["1"],"mytime":["1-2周"],

查看资料
DRV5053EAQLPGM
库存编号:2473007
Texas Instruments , , , TO-92-30
1起订
1+
10+
100+
500+
1000+
2500+
5000+
¥10.76
¥9.66
¥7.95
¥7.09
¥6.24
¥5.26
¥4.28
1-2周询价 询价
查看资料

DRV5053EAQLPG产品信息

  霍尔效应类型  双极性  
  输出电流  2.3mA  
  封装类型  TO-92  
  针脚数  3引脚  
  电源电压最小值  2.5V  
  电源电压最大值  38V  
  工作温度最小值  -40°C  
  工作温度最高值  125°C  
  封装  每个  
  产品范围  -  
  汽车质量标准  -  
  MSL  -  
关键词         

DRV5053EAQLPG相关搜索

霍尔效应类型 双极性  TEXAS INSTRUMENTS 霍尔效应类型 双极性  霍尔效应传感器 霍尔效应类型 双极性  TEXAS INSTRUMENTS 霍尔效应传感器 霍尔效应类型 双极性   输出电流 2.3mA  TEXAS INSTRUMENTS 输出电流 2.3mA  霍尔效应传感器 输出电流 2.3mA  TEXAS INSTRUMENTS 霍尔效应传感器 输出电流 2.3mA   封装类型 TO-92  TEXAS INSTRUMENTS 封装类型 TO-92  霍尔效应传感器 封装类型 TO-92  TEXAS INSTRUMENTS 霍尔效应传感器 封装类型 TO-92   针脚数 3引脚  TEXAS INSTRUMENTS 针脚数 3引脚  霍尔效应传感器 针脚数 3引脚  TEXAS INSTRUMENTS 霍尔效应传感器 针脚数 3引脚   电源电压最小值 2.5V  TEXAS INSTRUMENTS 电源电压最小值 2.5V  霍尔效应传感器 电源电压最小值 2.5V  TEXAS INSTRUMENTS 霍尔效应传感器 电源电压最小值 2.5V   电源电压最大值 38V  TEXAS INSTRUMENTS 电源电压最大值 38V  霍尔效应传感器 电源电压最大值 38V  TEXAS INSTRUMENTS 霍尔效应传感器 电源电压最大值 38V   工作温度最小值 -40°C  TEXAS INSTRUMENTS 工作温度最小值 -40°C  霍尔效应传感器 工作温度最小值 -40°C  TEXAS INSTRUMENTS 霍尔效应传感器 工作温度最小值 -40°C   工作温度最高值 125°C  TEXAS INSTRUMENTS 工作温度最高值 125°C  霍尔效应传感器 工作温度最高值 125°C  TEXAS INSTRUMENTS 霍尔效应传感器 工作温度最高值 125°C   封装 每个  TEXAS INSTRUMENTS 封装 每个  霍尔效应传感器 封装 每个  TEXAS INSTRUMENTS 霍尔效应传感器 封装 每个   产品范围 -  TEXAS INSTRUMENTS 产品范围 -  霍尔效应传感器 产品范围 -  TEXAS INSTRUMENTS 霍尔效应传感器 产品范围 -   汽车质量标准 -  TEXAS INSTRUMENTS 汽车质量标准 -  霍尔效应传感器 汽车质量标准 -  TEXAS INSTRUMENTS 霍尔效应传感器 汽车质量标准 -   MSL -  TEXAS INSTRUMENTS MSL -  霍尔效应传感器 MSL -  TEXAS INSTRUMENTS 霍尔效应传感器 MSL -  
参考价格及参考库存
  美国1号仓库    仓库直销,订单金额100元起订,满300元含运,满500元含税运,有单就有优惠,量大更优惠,支持原厂订货
型号 制造商 描述 操作
DRV5053EAQLPGM
[更多]
Texas Instruments

SENSOR LINEAR ANALOG TO92-3

RoHS: Compliant | pbFree: Yes

搜索
查看资料
DRV5053EAQLPGMQ1
[更多]
Texas Instruments

SENSOR LINEAR ANALOG TO92-3

RoHS: Compliant | pbFree: Yes

搜索
查看资料
DRV5053EAQLPG
[更多]
Texas Instruments

SENSOR LINEAR ANALOG TO92-3

RoHS: Compliant | pbFree: Yes

搜索
查看资料
DRV5053EAQLPGM
[更多]
Texas Instruments

SENSOR LINEAR ANALOG TO92-3

RoHS: Compliant | pbFree: Yes

搜索
查看资料
DRV5053EAQLPGQ1
[更多]
Texas Instruments

SENSOR LINEAR ANALOG TO92-3

RoHS: Compliant | pbFree: Yes

搜索
查看资料
DRV5053EAQLPGMQ1
[更多]
Texas Instruments

SENSOR LINEAR ANALOG TO92-3

RoHS: Compliant | pbFree: Yes

搜索
查看资料
  美国2号仓库    仓库直销,订单金额100元起订,满300元含运,满500元含税运,有单就有优惠,量大更优惠,支持原厂订货
型号 制造商 描述 操作
DRV5053EAQLPGM
[更多]
Texas Instruments

Board Mount Hall Effect / Magnetic Sensors 2.5 to 38V Analog Bipol Hall Eff Snsr

RoHS: Compliant

搜索
DRV5053EAQLPG
[更多]
Texas Instruments

Board Mount Hall Effect / Magnetic Sensors 2.5 to 38V Analog Bipol Hall Eff Snsr

RoHS: Compliant

搜索
DRV5053EAQLPGMQ1
[更多]
Texas Instruments

Board Mount Hall Effect / Magnetic Sensors Auto Analog-Bipolar Hall Effect Sensor

RoHS: Compliant

搜索
DRV5053EAQLPGQ1
[更多]
Texas Instruments

Board Mount Hall Effect / Magnetic Sensors Auto Analog-Bipolar Hall Effect Sensor

RoHS: Compliant

搜索
PDRV5053EAQLPG
[更多]
Texas Instruments

Board Mount Hall Effect / Magnetic Sensors Analog Bipolar Hall Effect Sensor

RoHS: Compliant

搜索
  日本1号仓库    仓库直销,订单金额100元起订,满300元含运,满500元含税运,有单就有优惠,量大更优惠,支持原厂订货
型号 制造商 描述 操作
DRV5053EAQLPG
[更多]
Texas Instruments

Hall Effect Sensor Bipolar 3.3V/5V/9V/12V/15V/18V/24V 3-Pin TO-92 Bulk

RoHS: Compliant

搜索
  美国3号仓库    仓库直销,订单金额100元起订,满300元含运,满500元含税运,有单就有优惠,量大更优惠,支持原厂订货
型号 制造商 描述 操作
DRV5053EAQLPG
[更多]
Texas Instruments

Hall Effect Sensor 2.3mA Bipolar 3.3V/5V/9V/12V/15V/18V/24V 3-Pin TO-92 Ammo Pack (Alt: DRV5053EAQLPG)

RoHS: Compliant

搜索
DRV5053EAQLPG
[更多]
Texas Instruments

Hall Effect Sensor 2.3mA Bipolar 3.3V/5V/9V/12V/15V/18V/24V 3-Pin TO-92 Ammo Pack - Tape and Reel (Alt: DRV5053EAQLPG)

RoHS: Compliant

搜索
DRV5053EAQLPGM
[更多]
Texas Instruments

Hall Effect Sensor 2.3mA Bipolar 3.3V/5V/9V/12V/15V/18V/24V 3-Pin TO-92 Bulk (Alt: DRV5053EAQLPGM)

RoHS: Compliant

搜索
DRV5053EAQLPGM
[更多]
Texas Instruments

Hall Effect Sensor 2.3mA Bipolar 3.3V/5V/9V/12V/15V/18V/24V 3-Pin TO-92 Bulk (Alt: DRV5053EAQLPGM)

RoHS: Compliant

搜索
PDRV5053EAQLPG
[更多]
Texas Instruments

Hall Effect Sensor 2.3mA Bipolar 2.5V to 38V 3-Pin TO-92 T/R (Alt: PDRV5053EAQLPG)

RoHS: Compliant

搜索
DRV5053EAQLPGM
[更多]
Texas Instruments

Hall Effect Sensor 2.3mA Bipolar 3.3V/5V/9V/12V/15V/18V/24V 3-Pin TO-92 Bulk - Tape and Reel (Alt: DRV5053EAQLPGM)

RoHS: Compliant

搜索
PDRV5053EAQLPG
[更多]
Texas Instruments

Hall Effect Sensor 2.3mA Bipolar 2.5V to 38V 3-Pin TO-92 T/R - Tape and Reel (Alt: PDRV5053EAQLPG)

RoHS: Compliant

搜索
DRV5053EAQLPGMQ1
[更多]
Texas Instruments

Automotive Analog-Bipolar Hall Effect Sensor - Tape and Reel (Alt: DRV5053EAQLPGMQ1)

RoHS: Compliant

搜索
  日本2号仓库    仓库直销,订单金额100元起订,满300元含运,满500元含税运,有单就有优惠,量大更优惠,支持原厂订货
型号 制造商 描述 操作
DRV5053EAQLPG
[更多]
Texas Instruments

Hall Effect Sensor Bipolar 3.3V/5V/9V/12V/15V/18V/24V 3-Pin TO-92 Bulk

RoHS: Compliant

搜索
DRV5053EAQLPGMQ1
[更多]
Texas Instruments

Hall Effect Sensor Latch 3.3V/5V/9V/12V/15V/18V/24V Automotive 3-Pin TO-92 Ammo

RoHS: Compliant

搜索
  新加坡2号仓库    仓库直销,订单金额100元起订,满300元含运,满500元含税运,有单就有优惠,量大更优惠,支持原厂订货
型号 制造商 描述 操作
DRV5053EAQLPG
[更多]
Texas Instruments

HALL EFFECT, BIPOLAR, TO-92-3

搜索
DRV5053EAQLPGM
[更多]
Texas Instruments

HALL EFFECT, BIPOLAR, TO-92-3

搜索
  美国8号仓库    仓库直销,订单金额100元起订,满300元含运,满500元含税运,有单就有优惠,量大更优惠,支持原厂订货
型号 制造商 描述 操作
DRV5053EAQLPG
[更多]
Texas Instruments  

搜索
DRV5053EAQLPGM
[更多]
Texas Instruments  

搜索
DRV5053EAQLPGMQ1
[更多]
Texas Instruments  

搜索
  美国1号仓库    查看更多相关产品
参考图片 制造商 / 描述 / 型号 / 仓库库存编号 / 别名 PDF操作

Texas Instruments - DRV5053EAQLPG - SENSOR LINEAR ANALOG TO92-3
Texas Instruments
SENSOR LINEAR ANALOG TO92-3

详细描述:Hall Effect Sensor Single Axis TO-92-3

型号:DRV5053EAQLPG
仓库库存编号:296-38603-ND
别名:296-38603 <br>296-38603-1 <br>296-38603-1-ND <br>

无铅
搜索

Texas Instruments - DRV5053EAQLPGM - SENSOR LINEAR ANALOG TO92-3
Texas Instruments
SENSOR LINEAR ANALOG TO92-3

详细描述:Hall Effect Sensor Single Axis TO-92-3

型号:DRV5053EAQLPGM
仓库库存编号:296-38604-1-ND
别名:296-38604-1 <br>

无铅
搜索

Texas Instruments - DRV5053EAQLPGMQ1 - SENSOR LINEAR ANALOG TO92-3
Texas Instruments
SENSOR LINEAR ANALOG TO92-3

详细描述:Hall Effect Sensor Single Axis TO-92-3

型号:DRV5053EAQLPGMQ1
仓库库存编号:296-40057-1-ND
别名:296-40057-1 <br>

无铅
搜索
  新加坡2号仓库    查看更多相关产品
制造商产品编号 仓库库存编号 制造商 / 说明 / 规格书 操作
DRV5053EAQLPGM
TEXAS INSTRUMENTS DRV5053EAQLPGM
2473007

TEXAS INSTRUMENTS

霍尔效应传感器, 双极性, 2.3 mA, TO-92, 3 引脚, 2.5 V, 38 V

(EN)
搜索
DRV5053EAQLPG
TEXAS INSTRUMENTS DRV5053EAQLPG
2473006

TEXAS INSTRUMENTS

霍尔效应传感器, 双极性, 2.3 mA, TO-92, 3 引脚, 2.5 V, 38 V

(EN)
搜索
  www.szcwdz.com    查看更多相关产品
参考图片 型号/品牌 描述 / 技术参考 操作
无图DRV5053EAQLPG
Texas Instruments
IC HALL SENSOR DGTL SW TO-92
PDF下载 
查价格库存
查看详细
无图DRV5053EAQLPGM
Texas Instruments
IC HALL SENSOR DGTL SW TO-92
PDF下载 
查价格库存
查看详细
无图DRV5053EAQLPGMQ1
Texas Instruments
IC HALL SENSOR TO-92
PDF下载 
查价格库存
查看详细
无图DRV5053EAQLPGQ1
Texas Instruments
Board Mount Hall Effect / Magnetic Sensors Auto Analog-Bipolar Hall Effect Sensor
暂无PDF 
查价格库存
查看详细
电话:400-900-3095
QQ:800152669

DRV5053EAQLPG产地与重量

原产地:
United States

进行最后一道重要生产流程所在的国家

RoHS 合规:
税则号:
85423990
重量(千克):
.0002
laird电子简介 | laird产品 | laird动态 | 按系列选型 | 按产品规格选型 | laird产品应用 | laird选型手册
Copyright © 2017 www.laird-tek.com All Rights Reserved. 技术支持:电子元器件 ICP备案证书号:粤ICP备11103613号
版权所有:深圳市创唯电子有限公司 客服电话:400-900-3095 企业QQ:800152669 邮箱:sales@szcwdz.com
深圳市市场监督管理局企业主体身份公示