FSA8069UCX Price & Stock
- 4 Star
- AAAChips
- ACDS
- ACME
- AllChip Elec
- Allchips
- Allelco
- AnLin
- Anterwell
- Anywayele
- APS
- Ariat
- Asen Elec
- Atosn
- ATP
- Augswan
- Au Ling
- BARUM
- Besen Tech
- Best Comp
- Best-Tech
- Bettlink
- Bison
- Blue Peninsula
- Bomov
- Brilltron
- Briocean
- CGOC
- Chipdigger
- Chipinventory
- ChipOne
- Chipsfind
- Chips Pulse
- Chuangxinda
- Classic
- Comp Enter
- Comp Sense
- ComS.I.T.
- Conevo
- Conrad
- CosmosComp
- C Plus
- Cytech
- Dasenic
- Depu
- DGT Tech
- Dicchip
- Direct Components
- Drex Elec
- Dxway
- Dynamic-sl
- EASEV
- Element14apac
- Errebi
- Ersa
- ESource
- Fanco
- Farnell
- FirstChoice
- Flip
- FlyWing
- FPGAMALL
- Freelance
- Gang Bo
- GDIC
- Geefook
- GlobalTek
- Grand power
- GreenChips
- Green Light
- Greentree
- Handtmann
- Hansinfo
- HaoDe
- Heisener
- HeQing
- Hongte
- HonourChip
- Hotenda
- HS IC
- HskElec
- IC Components
- IC Online
- ICsole
- ICSOSO
- In Clear
- ITD-IC
- J2sourcing
- Jak
- Jameco
- JiaLiXin
- Jiayi
- Jinrongda
- Kepictronics
- KK Wisdom
- Klytech
- Kynix
- Lankamicro
- LCSC
- Leader IC
- Lingto
- LIXINC
- LKR Elec
- Longzi
- Lvangchip
- Lvychips
- Macroship
- March-Tech
- Maritex
- Mars Elec
- Martec
- Maybo
- MetaverseIc
- MicrochipUSA
- Microsemi
- Midan
- Mouser
- MV Comp
- NAC
- Nantian
- Netsight
- NetSource
- Newark
- NewStrength
- Nexxon
- N&S Elec
- OMO
- OnlineCom
- PESE
- Pneda
- PUI
- Quarktwin
- Quattro
- Quest
- Quotebeam
- Resion
- Rixin
- Rochester
- RS
- RS DE
- RYX IC
- Sense Elec
- Shengyu
- Sierra
- SiliTech
- Sky Foundation
- Southernel
- STJK
- TE
- TME
- Unicom Elec
- Unikey
- Unite Chance Co., Limited
- Utmel
- Utsource
- Ventron
- Viassion
- Voyager Comp
- WanWeiChip
- Weyland
- WinSource
- Wjcdz
- Worldway
- Xianghongli
- Xinvry
- Xunqida
- YIC
- YST Elec
- Yuanxinai
- YueTong Tech
- ZHSChip
- ZTZ Tech
Hide
Manufacturer
![FSA8069UCX-Digikey](http://media.digikey.com/Renders/Fairchild%20Semi%20Renders/12-UFBGA,%20WLCSP.jpg)
Integrated Circuits (ICs) > Audio Special Purpose
IC AUDIO JACK DETECT SW 12L-WLCS
Documents
Datasheet |
FSA8069UCX![]() |
Specifications
Part Status | Active |
Function | Detection Switch |
Applications | Consumer Audio |
Number of Channels | 1 |
Interface | I²C |
Voltage - Supply | 3 V ~ 4.5 V |
Operating Temperature | -40°C ~ 85°C (TA) |
Specifications | 1 x SPST - NO |
Package / Case | 12-UFBGA, WLCSP |
Supplier Device Package | 12-WLCSP (1.42x1.62) |
Hide
![FSA8069UCX price|NOVA Technology (HK) Co., Ltd.](http://cdn.digipart.com/img/distr/Iconline.png)
NOVA Technology (HK) Co., Ltd.
Certificates
Part # | Manufacturer | Description | Stock | Price | Buy | |
---|---|---|---|---|---|---|
FSA8069UCX | Fairchild Semiconductor | AUDIO/VIDEO SWITCH |
|
Inquiry |
![FSA8069UCX price|Allchips Limited](http://cdn.digipart.com/img/distr/Allchips.png)
Allchips Limited
Certificates
Part # | Manufacturer | Description | Stock | Price | Buy | |
---|---|---|---|---|---|---|
FSA8069UCX | onsemi | IC DETECTION SWITCH 12WLCSP | In-Stock |
|
Inquiry | |
FSA8069UCX | ON Semiconductor / Fairchild | Audio Jack IC 12-Pin WLCSP T/R | In-Stock |
|
Inquiry |
![FSA8069UCX price| Shenzhen Bomo Microelectronics Technology Co., Ltd.](http://cdn.digipart.com/img/distr/Bomov.png)
Shenzhen Bomo Microelectronics Technology Co., Ltd.
Certificates
Part # | Manufacturer | Description | Stock | Price | Buy | |
---|---|---|---|---|---|---|
FSA8069UCX | Rochester Electronics, LLC | Bulk | 200 |
|
Inquiry |
![FSA8069UCX price|Rochester Electronics](http://cdn.digipart.com/img/distr/Rochester.png)
Rochester Electronics
Certificates
Part # | Manufacturer | Description | Stock | Price | Buy | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
FSA8069UCX | Fairchild | Audio/Video Switch ' | 107711 |
|
Buy |
![FSA8069UCX price|Mouser](http://cdn.digipart.com/img/distr/Mouser.png)
Mouser
Certificates
Part # | Manufacturer | Description | Stock | Price | Buy | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
FSA8069UCX
sku #: 512-FSA8069UCX
|
onsemi / Fairchild | Analog Switch ICs Audio Jack IC Featureing Impedance and Moisture Detection Analog Switch ICs
|
2745 In Stock |
|
Buy |
![FSA8069UCX price|Gang Bo Industrial Co,.Limited](http://cdn.digipart.com/img/distr/Gangboic.png)
Gang Bo Industrial Co,.Limited
Certificates
Part # | Manufacturer | Description | Stock | Price | Buy | ||
---|---|---|---|---|---|---|---|
FSA8069UCX | Rochester Electronics | AUDIO/VIDEO SWITCH | 107711 |
|
Buy |
![FSA8069UCX price|Geefook (Shenzhen) Electronic Co., Ltd.](http://cdn.digipart.com/img/distr/Gfookic.png)
Geefook (Shenzhen) Electronic Co., Ltd.
Certificates
Part # | Manufacturer | Description | Stock | Price | Buy | |
---|---|---|---|---|---|---|
FSA8069UCX | onsemi | 35000 |
|
Inquiry |
![FSA8069UCX price|Hong Kong Luk Electronics Co., Limited](http://cdn.digipart.com/img/distr/Lkrelec.png)
Hong Kong Luk Electronics Co., Limited
Certificates
Part # | Manufacturer | Description | Stock | Price | Buy | |
---|---|---|---|---|---|---|
FSA8069UCX | ON Semiconductor |
|
Inquiry |
![FSA8069UCX price|Hotenda Technology](http://cdn.digipart.com/img/distr/Hotenda.png)
Hotenda Technology
Certificates
Part # | Manufacturer | Description | Stock | Price | Buy | |
---|---|---|---|---|---|---|
FSA8069UCX | Fairchild Semiconductor | IC AUDIO JACK DETECT SW 12L-WLCS | 2042 |
|
Inquiry |
![FSA8069UCX price|Heisener Electronics Co., Limited](http://cdn.digipart.com/img/distr/Heisener.png)
Heisener Electronics Co., Limited
Certificates
Part # | Manufacturer | Description | Stock | Price | Buy | |
---|---|---|---|---|---|---|
FSA8069UCX | ON Semiconductor | IC AUDIO JACK DETECT SW 12L-WLCS Audio Special Purpose
|
3102 |
|
Buy |
![FSA8069UCX price|DGT Technology (HK) Co., Limited](http://cdn.digipart.com/img/distr/Dgttech.png)
DGT Technology (HK) Co., Limited
Certificates
Part # | Manufacturer | Description | Stock | Price | Buy | ||
---|---|---|---|---|---|---|---|
FSA8069UCX | Rochester Electronics | AUDIO/VIDEO SWITCH | 107711 |
|
Inquiry |
![FSA8069UCX price|Shenzhen Zuan Ying Tech Trade Co., Ltd](http://cdn.digipart.com/img/distr/Dicchip.png)
Shenzhen Zuan Ying Tech Trade Co., Ltd
Certificates
Part # | Manufacturer | Description | Stock | Price | Buy | |
---|---|---|---|---|---|---|
FSA8069UCX | Fairchild Semiconductor | AUDIO/VIDEO SWITCH ; DC:21+ ; 12-WLCSP (1.16x1.56) | 100 |
|
Inquiry | |
FSA8069UCX | onsemi | IC DETECTION SWITCH 12WLCSP ; DC:21+ ; 12-WLCSP (1.62x1.42) | 100 |
|
Inquiry |
![FSA8069UCX price|Unikey Electronics Pte. Ltd.](http://cdn.digipart.com/img/distr/Unikey.png)
Unikey Electronics Pte. Ltd.
Certificates
Part # | Manufacturer | Description | Stock | Price | Buy | |
---|---|---|---|---|---|---|
FSA8069UCX | ON Semiconductor | : 15+ : 2890 Audio Jack IC Analog Switch ; DC:1515 |
2890 |
|
Inquiry |
Part # | Manufacturer | Description | Stock | Price | Buy | |
---|---|---|---|---|---|---|
FSA8069UCX | AMI Semiconductor / ON Semiconductor | IC AUDIO JACK DETECT SW 12L-WLCS ; 12-WLCSP Audio Special Purpose
|
Available |
|
Inquiry |
![FSA8069UCX price|Quarktwin Technology Ltd](http://cdn.digipart.com/img/distr/Quarktwin.png)
Quarktwin Technology Ltd
Certificates
Part # | Manufacturer | Description | Stock | Price | Buy | |
---|---|---|---|---|---|---|
FSA8069UCX | onsemi | Audio Detection Switch 1 Channel 12-WLCSP (1.62x1.42) | 3212 |
|
Inquiry | |
FSA8069UCX | Fairchild Semiconductor | Audio Detection Switch 1 Channel 12-WLCSP (1.16x1.56) | 5435 |
|
Inquiry |
![FSA8069UCX price|Fly-Wing Technology (HK) Co., Ltd](http://cdn.digipart.com/img/distr/Flywing.png)
Fly-Wing Technology (HK) Co., Ltd
Certificates
Part # | Manufacturer | Description | Stock | Price | Buy | ||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
FSA8069UCX | ON Semiconductor | e1 LAST SHIPMENTS (Last Updated: 4days ago) Single 12-UFBGA WLCSP audio IC 0.625mm 100muA 3.8V 500mOhm | 8601 |
|
Buy |
![FSA8069UCX price|PNEDA Technology Co., Ltd](http://cdn.digipart.com/img/distr/Pneda.png)
PNEDA Technology Co., Ltd
Certificates
Part # | Manufacturer | Description | Stock | Price | Buy | |
---|---|---|---|---|---|---|
FSA8069UCX | ON Semiconductor | 5595 |
|
Inquiry |
Part # | Manufacturer | Description | Stock | Price | Buy | |
---|---|---|---|---|---|---|
FSA8069UCX | ON Semiconductor | IC AUDIO JACK DETECT SW 12L-WLCS | 12000 |
|
Inquiry |
Part # | Manufacturer | Description | Stock | Price | Buy | |
---|---|---|---|---|---|---|
FSA8069UCX | Fairchild/ON Semiconductor | IC AUDIO JACK DETECT SW 12L-WLCS Audio Special Purpose
|
In-Stock |
|
Inquiry |
![FSA8069UCX price|Lingto Electronic Limited](http://cdn.digipart.com/img/distr/Lingto.png)
Lingto Electronic Limited
Certificates
Part # | Manufacturer | Description | Stock | Price | Buy | |
---|---|---|---|---|---|---|
FSA8069UCX | Rochester Electronics | DC:24+ ; AUDIO/VIDEO SWITCH | 41260 |
|
Inquiry | |
FSA8069UCX | onsemi | DC:24+ ; IC DETECTION SWITCH 12WLCSP | 15273 |
|
Inquiry |
![FSA8069UCX price|Ariat Technology](http://cdn.digipart.com/img/distr/Ariat.png)
Ariat Technology
Certificates
Part # | Manufacturer | Description | Stock | Price | Buy | |
---|---|---|---|---|---|---|
FSA8069UCX | AMI Semiconductor / ON Semiconductor | IC AUDIO JACK DETECT SW 12L-WLCS Specialized ICs
|
2881 |
|
Inquiry |
![FSA8069UCX price|Win Source](http://cdn.digipart.com/img/distr/Winsource.png)
Win Source
Certificates
Part # | Manufacturer | Description | Stock | Price | Buy | ||
---|---|---|---|---|---|---|---|
FSA8069UCX | ON Semiconductor | IC DETECTION SWITCH 12WLCSP | 51550 |
|
Buy |
![FSA8069UCX price|Blue Peninsula Technology Co., Limited](http://cdn.digipart.com/img/distr/Bluepeninsula.png)
Blue Peninsula Technology Co., Limited
Certificates
Part # | Manufacturer | Description | Stock | Price | Buy | |
---|---|---|---|---|---|---|
FSA8069UCX | Fairchild Semiconductor | AUDIO/VIDEO SWITCH | 320 |
|
Inquiry | |
FSA8069UCX | onsemi | IC DETECTION SWITCH 12WLCSP | 27314 |
|
Inquiry |
Part # | Manufacturer | Description | Stock | Price | Buy | |
---|---|---|---|---|---|---|
FSA8069UCX | onsemi | 12-UFBGA WLCSP New and original,In Stock | 15825 |
|
Inquiry |
![FSA8069UCX price|GlobalTek Components](http://cdn.digipart.com/img/distr/Globaltek.png)
GlobalTek Components
Certificates
Part # | Manufacturer | Description | Stock | Price | Buy | |
---|---|---|---|---|---|---|
FSA8069UCX | ROCHESTER ELECTRONICS, LL | OEM/CM QUOTES ONLY | NO BROKERS | 82800 |
|
Inquiry |
![FSA8069UCX price|KaiLiYuan Electronic Technology (ShenZhen) Co., Ltd](http://cdn.digipart.com/img/distr/Klytech.png)
KaiLiYuan Electronic Technology (ShenZhen) Co., Ltd
Certificates
Part # | Manufacturer | Description | Stock | Price | Buy | |
---|---|---|---|---|---|---|
FSA8069UCX | onsemi | IC DETECTION SWITCH 12WLCSP ; DC:21+ ; 12-WLCSP (1.62x1.42) | 111 |
|
Inquiry | |
FSA8069UCX | Fairchild Semiconductor | AUDIO/VIDEO SWITCH ; DC:21+ ; 12-WLCSP (1.16x1.56) | 111 |
|
Inquiry |
![FSA8069UCX price|LIXINC Electronics Co., Limited](http://cdn.digipart.com/img/distr/Szlxcdz.png)
LIXINC Electronics Co., Limited
Certificates
Part # | Manufacturer | Description | Stock | Price | Buy | |
---|---|---|---|---|---|---|
FSA8069UCX | Rochester Electronics | Brand new and original/respond online to quote. | 13194 |
|
Inquiry |
![FSA8069UCX price|ICSOSO Electronics Company Limited](http://cdn.digipart.com/img/distr/Icsoso.png)
ICSOSO Electronics Company Limited
Certificates
Part # | Manufacturer | Description | Stock | Price | Buy | |
---|---|---|---|---|---|---|
FSA8069UCX | onsemi | Audio Jack IC Featureing Impedance and Moisture Detection | 9939 |
|
Inquiry |
![FSA8069UCX price|MountainView Components Inc.](http://cdn.digipart.com/img/distr/Mvcomp.png)
MountainView Components Inc.
Certificates
Part # | Manufacturer | Description | Stock | Price | Buy | |
---|---|---|---|---|---|---|
FSA8069UCX | FAIRCHILD | IN STOCK Immediate delivery | 1360 |
|
Inquiry |
![FSA8069UCX price|Shenzhen Shengyu Electronics Tech Limited.](http://cdn.digipart.com/img/distr/Shengyu.png)
Shenzhen Shengyu Electronics Tech Limited.
Certificates
Part # | Manufacturer | Description | Stock | Price | Buy | |
---|---|---|---|---|---|---|
FSA8069UCX | Fairchild Semiconductor | AUDIO/VIDEO SWITCH | 7342 |
|
Inquiry |
Part # | Manufacturer | Description | Stock | Price | Buy | |
---|---|---|---|---|---|---|
FSA8069UCX | FAIRCHILD | IN STOCK | 1560 |
|
Inquiry |
![FSA8069UCX price|SILITECH Components Inc](http://cdn.digipart.com/img/distr/Silitech.png)
SILITECH Components Inc
Certificates
Part # | Manufacturer | Description | Stock | Price | Buy | |
---|---|---|---|---|---|---|
FSA8069UCX | FAIRCHILD | OEM/CM In stock | 51990 |
|
Inquiry |
Part # | Manufacturer | Description | Stock | Price | Buy | |
---|---|---|---|---|---|---|
FSA8069UCX | FAIRCHILD | BGA-12 | 2274 |
|
Inquiry |
Part # | Manufacturer | Description | Stock | Price | Buy | |
---|---|---|---|---|---|---|
FSA8069UCX | Fairchild Semiconductor | 2,887 |
|
Inquiry | ||
FSA8069UCX | ON Semiconductor | 1000 |
|
Inquiry |
Part # | Manufacturer | Description | Stock | Price | Buy | |
---|---|---|---|---|---|---|
FSA8069UCX | FAIRCHILD | Stock to ship immediately | 55990 |
|
Inquiry |
![FSA8069UCX price|Zhong Hai Sheng Technology Limited](http://cdn.digipart.com/img/distr/Zhschip.png)
Zhong Hai Sheng Technology Limited
Certificates
Part # | Manufacturer | Description | Stock | Price | Buy | |
---|---|---|---|---|---|---|
FSA8069UCX | Rochester Electronics | 12-UFBGA, WLCSP | 107711 |
|
Inquiry |
![FSA8069UCX price|Shenzhen Yuanxinai e-commerce Co., Ltd](http://cdn.digipart.com/img/distr/Yuanxinai.png)
Shenzhen Yuanxinai e-commerce Co., Ltd
Certificates
Part # | Manufacturer | Description | Stock | Price | Buy | |
---|---|---|---|---|---|---|
FSA8069UCX | Fairchild Semiconductor | The original | 9377 |
|
Inquiry |
![FSA8069UCX price|Asian Tera Part Limited](http://cdn.digipart.com/img/distr/Speedele.png)
Asian Tera Part Limited
Certificates
Part # | Manufacturer | Description | Stock | Price | Buy | |
---|---|---|---|---|---|---|
FSA8069UCX | onsemi | Check alternative solution with competitive price | 92062 |
|
Inquiry |
![FSA8069UCX price|Briocean Technology Co. Ltd](http://cdn.digipart.com/img/distr/Briocean.png)
Briocean Technology Co. Ltd
Certificates
Part # | Manufacturer | Description | Stock | Price | Buy | |
---|---|---|---|---|---|---|
FSA8069UCX | Fairchild | 72000 |
|
Inquiry |
Part # | Manufacturer | Description | Stock | Price | Buy | |
---|---|---|---|---|---|---|
FSA8069UCX | AMI Semiconductor / ON Semiconductor | IC AUDIO JACK DETECT SW 12L-WLCS | 8122 |
|
Inquiry |
![FSA8069UCX price|Unicom Electronics co.](http://cdn.digipart.com/img/distr/Unicomele.png)
Unicom Electronics co.
Certificates
Part # | Manufacturer | Description | Stock | Price | Buy | |
---|---|---|---|---|---|---|
FSA8069UCX | FAIRCHILD | IN STOCK Immediate delivery | 1460 |
|
Inquiry |
Part # | Manufacturer | Description | Stock | Price | Buy | |
---|---|---|---|---|---|---|
FSA8069UCX | FAIRCHILD | BGA-12 ; DC:2015+ | 49990 |
|
Inquiry |
![FSA8069UCX price|Nexxon, Inc. (USA)](http://cdn.digipart.com/img/distr/Nexxon.png)
Nexxon, Inc. (USA)
Certificates
Part # | Manufacturer | Description | Stock | Price | Buy | |
---|---|---|---|---|---|---|
FSA8069UCX | Fairchild/ON Semiconductor | In Stock |
|
Inquiry |
![FSA8069UCX price|BARUM Electronics](http://cdn.digipart.com/img/distr/Barum.png)
BARUM Electronics
Certificates
Part # | Manufacturer | Description | Stock | Price | Buy | |
---|---|---|---|---|---|---|
FSA8069UCX | AMI Semiconductor / ON Semiconductor | IC AUDIO JACK DETECT SW 12L-WLCS | 10512 |
|
Inquiry |
![FSA8069UCX price|YIC International Co., Limited](http://cdn.digipart.com/img/distr/Yicint.png)
YIC International Co., Limited
Certificates
Part # | Manufacturer | Description | Stock | Price | Buy | |
---|---|---|---|---|---|---|
FSA8069UCX | AMI Semiconductor / ON Semiconductor | IC AUDIO JACK DETECT SW 12L-WLCS | 2951 |
|
Inquiry |
Part # | Manufacturer | Description | Stock | Price | Buy | |
---|---|---|---|---|---|---|
FSA8069UCX | ON | 8598 |
|
Inquiry |
Part # | Manufacturer | Description | Stock | Price | Buy | |
---|---|---|---|---|---|---|
FSA8069UCX | FAIRCHILD | Original stock,24-hour delivery | 151009 |
|
Inquiry |
Part # | Manufacturer | Description | Stock | Price | Buy | |
---|---|---|---|---|---|---|
FSA8069UCX | FAIRCHILD | IN STOCK Immediate delivery | 1560 |
|
Inquiry |
Part # | Manufacturer | Description | Stock | Price | Buy | |
---|---|---|---|---|---|---|
FSA8069UCX | FAIRCHILD | BGA-12 ; DC:21+ | 49990 |
|
Inquiry |
![FSA8069UCX price|Authorized Procurement Solutions](http://cdn.digipart.com/img/distr/Aps.png)
Authorized Procurement Solutions
Certificates
Part # | Manufacturer | Description | Stock | Price | Buy | |
---|---|---|---|---|---|---|
FSA8069UCX | onsemi | OEMs, CMs ONLY (NO BROKERS) | 5000 |
|
Inquiry |
Part # | Manufacturer | Description | Stock | Price | Buy | |
---|---|---|---|---|---|---|
FSA8069UCX | FAIRCHILD | electronical components ; DC:22+ ; BGA-12 ; 100% original goods electronic components integrated circuits
|
10000 |
|
Inquiry |
![FSA8069UCX price|IC Components Limited](http://cdn.digipart.com/img/distr/Iccomp.png)
IC Components Limited
Certificates
Part # | Manufacturer | Description | Stock | Price | Buy | |
---|---|---|---|---|---|---|
FSA8069UCX | Fairchild/ON Semiconductor | FAIRCHILD BGA-12 | 49990 |
|
Buy |
Part # | Manufacturer | Description | Stock | Price | Buy | |
---|---|---|---|---|---|---|
FSA8069UCX | FAIRCHILD | DC:2015+ ; BGA-12 | 49990 |
|
Inquiry |
![FSA8069UCX price|Depu Electronics](http://cdn.digipart.com/img/distr/Depu.png)
Depu Electronics
Certificates
Part # | Manufacturer | Description | Stock | Price | Buy | |
---|---|---|---|---|---|---|
FSA8069UCX | FAIRCHILD | 2019+_WLCSP12_new and original | 15000 |
|
Inquiry |
Part # | Manufacturer | Description | Stock | Price | Buy | |
---|---|---|---|---|---|---|
FSA8069UCX
sku #: FSA8069UCX
|
Fairchild | 46218 |
|
Inquiry |
Part # | Manufacturer | Description | Stock | Price | Buy | |
---|---|---|---|---|---|---|
FSA8069UCX | Fairchild | OEM/CM ONLY | 3100 |
|
Inquiry |
See Also:
FSA8049UCX
FSA806UMX
FSA8009UMX
FSA8029UMX
FSA805UMX
FSA8008UMX
FSA8028UMX
FSA8058UMX
FSA8048UMX
FSA8039UMSX
FSA800UMX
FSA801UMX
FSA8049UCX IC
FSA8008AUMX
FSA8038UMSX
FSA8039AUMSX