X00   (5)  ST    0.8A SCRs
X01   (5)  ETC [ETC]    Silicon controlled rectifiers
X02   (67)  STMICROELECTRONICS [STMicroelectronics]    1.25A SCRs
X04   (41)  STMICROELECTRONICS [STMicroelectronics]    4A SCRS
X06   (1)      
X11   (1)      Peripheral IC
X12   (193)  XICOR [Xicor Inc.]    Real Time Clock/Calendar/CPU Supervisor with EEPROM
X17   (8)  XILINX [Xilinx, Inc]    QPRO Family of XC1700D QML Configuration PROMs
X20   (199)  XICOR [Xicor Inc.]    High Speed AUTOSTORE⑩ NOVRAM
X21   (6)  ETC [ETC]    X200 SERIES (CMOS) STANDARD SPECFITIONS
X22   (38)  ETC [ETC]    X200 SERIES (CMOS) STANDARD SPECFITIONS
X23   (6)  ETC [ETC]    X200 SERIES (CMOS) STANDARD SPECFITIONS
X24   (633)  XICOR [Xicor Inc.]    SerialFlash TM Memory with Block Lock TM Protection
X25   (771)  XICOR [Xicor Inc.]    SPI SerialFlash with Block Lock TM Protection
X27   (36)  ALSC [Alliance Semiconductor Corporation]    General Purpose EMI Reduction IC
X28   (1360)  XICOR [Xicor Inc.]    5 Volt, Byte Alterable E2PROM
X2N   (12)  CALOGIC [Calogic, LLC]    N-Channel JFET High Frequency Amplifier
X30   (1)      RECTIFIER DIODE,3KV V(RRM),AXIAL-7
X31   (9)  XICOR [Xicor Inc.]    3 or 4 Cell Li-Ion Battery Protection and Monitor IC
X3N   (3)  CALOGIC [Calogic, LLC]    N-Channel Enhancement Mode MOSFET Switch
X40   (501)  INTERSIL [Intersil Corporation]    CPU Supervisor with 4Kbit EEPROM
X41   (34)  INTERSIL [Intersil Corporation]    CPU Supervisor with 16K EEPROM
X42   (81)  XICOR [Xicor Inc.]    CPU Supervisor with 128K EEPROM
X43   (34)  INTERSIL [Intersil Corporation]    CPU Supervisor with 32K EEPROM
X45   (5)  INTERSIL [Intersil Corporation]    Dual Voltage Monitor with Integrated System Battery Switch and EEPROM
X46   (59)  XICOR [Xicor Inc.]    CPU Supervidor with 64K EEPROM
X4C   (2)  INTERSIL [Intersil Corporation]    CPU Supervisor with NOVRAM and Output Ports
X50   (203)  INTERSIL [Intersil Corporation]    CPU Supervisor with 9Kbit SPI EEPROM
X51   (206)  INTERSIL    CPU Supervisor with 16Kbit SPI EEPROM
X53   (196)  INTERSIL [Intersil Corporation]    CPU Supervisor with 32Kbit SPI EEPROM
X55   (9)  INTERSIL [Intersil Corporation]    Dual Voltage Monitor with Integrated System Battery Switch and EEPROM
X56   (53)  XICOR [Xicor Inc.]    CPU Supervisor with 64Kbit SPI EEPROM
X5R   (8)  ETC [ETC]    ceramic chip capacitors
X60   (35)  INTERSIL [Intersil Corporation]    Precision 4.096V SOT-23 FGA Voltage References
X68   (29)  XICOR [Xicor Inc.]    SAW Components Bandpass Filter
X69   (4)  ETC [ETC]    Bandpass Filter
X72   (2)  EPCOS    SAW Components Bandpass Filter
X76   (133)  XICOR [Xicor Inc.]    Secure SerialFlash
X79   (6)  INTERSIL [Intersil Corporation]    NV DAC with Selectable Output Range and Memory
X7R   (8)  ETC [ETC]    ceramic chip capacitors
X80   (56)  INTERSIL [Intersil Corporation]    Voltage Supervisor/Sequencer Triple Programmable Time Delay with Local/Remote Voltage Monitors
X84   (101)  XICOR [Xicor Inc.]    uPort Saver EEPROM
X86   (7)  XICOR [Xicor Inc.]    E2 Micro-Peripheral
X88   (45)  XICOR [Xicor Inc.]    E2 Micro-Peripheral
X90   (35)  INTERSIL [Intersil Corporation]    Digitally-Controlled Potentiometer
X91   (81)  INTERSIL [Intersil Corporation]    Dual Suply/Low Power/1024-Tap/2-Wire Bus
X92   (564)  INTERSIL [Intersil Corporation]    Single Digitally-Controlled (XDCP) Potentiometer
X93   (475)  XICOR [Xicor Inc.]    E 2 POT TM Nonvolatile Digital Potentiometer
X94   (551)  INTERSIL [Intersil Corporation]    Dual Two-wiper Digitally-Controlled (XDCP) Potentiometer
X95   (97)  XICOR [Xicor Inc.]    PushPot⑩ Potentiometer (Push Button Controlled)
X96   (9)  INTERSIL [Intersil Corporation]    Sensor Conditioner with Dual Look Up Table Memory and DACs
X98   (16)  INTERSIL [Intersil Corporation]    240MHz Triple Video Digitizer with Digital PLL
X9C   (76)  XICOR [Xicor Inc.]    Digitally Controlled Pot (XDCP)
XA-   (11)  PHILIPS [Philips Semiconductors]    XA 16-bit microcontroller family 32K/1024 OTP CAN transport layer controller 1 UART, 1 SPI Port, CAN 2.0B, 32 CAN ID Filters, transport layer co-proce
XA1   (3)  SONY [Sony Corporation]    FM/AM Radio
XAA   (5)  CLARE [Clare, Inc.]    DUAL POLE OptoMOS Relay
XAG   (1)  PHILIPS [Philips Semiconductors]    XA 16-bit microcontroller family 32K/512 OTP/ROM/ROMless, watchdog, 2 UARTs
XAM   (2)  ETC [ETC]    16 SEGMENT SINGLE DIGIT ALPHANUMERIC DISPLAY
XB0   (1)  TOREX [Torex Semiconductor]    SCHOTTKY BARRIER DIODE 500MA 30V TYPE
XB1   (29)  TOREX [Torex Semiconductor]    1A Low Dropout Positive Voltage Regulator
XBA   (5)  CLARE [Clare, Inc.]    DUAL POLE OptoMOS Relay
XBB   (5)  CLARE [Clare, Inc.]    DUAL POLE OptoMOS Relay
XBR   (4)  MOTOROLA [Motorola, Inc]    SCHOTTKY BARRIER RECTIFIER
XC-   (6)  SONY [Sony Corporation]    PROGRESSIVE SCAN CAMERA MODULE
XC1   (250)  XILINX [Xilinx, Inc]    Configuration PROMs
XC2   (829)  TOREX [Torex Semiconductor]    Virtex-II 1.5V Field-Programmable Gate Arrays
XC3   (436)  XILINX [Xilinx, Inc]    Field Programmable Gate Arrays (XC3000A/L, XC3100A/L)
XC4   (1019)  XILINX [Xilinx, Inc]    XC4000E and XC4000X Series Field Programmable Gate Arrays
XC5   (419)  XILINX [Xilinx, Inc]    Field Programmable Gate Arrays
XC6   (9189)  TOREX [Torex Semiconductor]    High Current Dual Positive Regulator
XC7   (51)  TOREX [Torex Semiconductor]    CMOS Logic
XC8   (39)  OMRON [Omron Electronics LLC]    XC9
XC9   (456)  XILINX [Xilinx, Inc]    XC9572XV High-performance CPLD
XCA   (4)  CLARE [Clare, Inc.]    SINGLE POLE OptoMOS Relay
XCB   (6)  MOTOROLA [Motorola, Inc]    Single Pole OptoMOS Relays
XCC   (4)  XILINX [Xilinx, Inc]    System ACE CompactFlash Solution
XCF   (3)      
XCR   (236)  XILINX [Xilinx, Inc]    TotalCMOS, Universal PLD Device
XCS   (2532)  XILINX [Xilinx, Inc]    Spartan and Spartan-XL Families Field Programmable Gate Arrays
XCV   (1001)  XILINX [Xilinx, Inc]    Field Programmable Gate Arrays
XCW   (7)  CALOGIC [Calogic, LLC]    100MHz CMOS/DMOS Wideband Quad Analog Switch
XDP   (1)  CALOGIC [Calogic, LLC]    Dual Pico Amp Diodes
XDS   (1)      Emulator Installation Guide
XDU   (1)  ETC [ETC]    14.22mm (0.56?) DUAL DIGIT MUMERIC DISPLAY
XE-   (1)      
XE0   (11)  ETC [ETC]    Telephone Line Interface with Active Line Monitoring
XE1   (19)  ETC [ETC]    Worldwide 14.4 KBPS Modem Module for Embedded Applications
XE2   (7)  ETC [ETC]    CAPACITIVE SENSOR INTERFACE CIRCUIT WITH GAIN AND OFFSET ADJUSTMENT
XE3   (5)  ETC [ETC]    Compact 33,600 BPS Data and Fax Modem
XE5   (3)  ETC [ETC]    56 KBPS Surface-Mountable Integrated Sealed-Hybrid Modem
XE8   (5)  ETC [ETC]    16 + 10 bit Data Acquisition Ultra Low-Power Microcontroller
XF0   (3)  ETC [ETC]    GATE DRIVE TRANSFORMER
XF1   (1)  ETC [ETC]    INDUCTOR
XF2   (33)  ETC [ETC]    0.5mm-pitch ZIF-Slide Type
XF6   (1)  ETC [ETC]    HOME PHONE NETWORKING BANDPASS FILTER WITH 10 BASE -T
XFG   (1)  ETC [ETC]    1000BASE - T MODULES
XFH   (1)  ETC [ETC]    XFHCL3-1R2M
XFS   (1)  ETC [ETC]    XFSDR43-3R9M
XFT   (1)  ETC [ETC]    XFTPRH1204 SERIES INDUCTORS
XFW   (38)  ETC [ETC]    XFWIC565050 SERIES INDUCTORS
XG2   (1)  OMRON [Omron Electronics LLC]    Screw Terminal Block Cables
XG4   (6)  OMRON [Omron Electronics LLC]    Screw Terminal Block Cables
XGU   (1)  ETC [ETC]    10 SEGMENTS BAR GRAPH ARRAY
XIO   (1)  TI    XIO2000A PCI Express 至 PCI 总线转换桥接器
XIT   (2)  CALOGIC [Calogic, LLC]    N-Channel Enhancement Mode MOSFET General Purpose Amplifier Switch
XJ1   (1)  CALOGIC [Calogic, LLC]    N-Channel JFET Switch
XL0   (3)  ETC [ETC]    SENSITIVE GATE SCR
XL1   (1)  UTC [Unisonic Technologies]    The XL1225/ML1225 silicon controlled rectifiers
XL7   (48)  ETC [ETC]    Cree XLamp 7090 Packaged LEDs
XL9   (3)  ETC [ETC]    2,048-Bit Serial Electrically Erasable PROM 2.7 to 5.5 Volt Operation
XLC   (1)  ETC [ETC]    T-1 3/4 (5mm) SOLID STATE LAMP
XLM   (2)  ETC [ETC]    T-1 (3mm) SOLID STATE LAMP
XLR   (1)  Electronic Devices    
XLS   (1)  ETC [ETC]    4096-Bit Serial Electrically Erasable PROM with 2V Capability
XLT   (1)      工作电压：DC　4.7~5.5V 输入电压为DC：8V到450V 1、XLT为LED恒流驱动IC 2、恒流范围：5毫安到1安 3、可驱动1到100个LED 4、外部线性调光 5、外部PWM调光
XLU   (2)  ETC [ETC]    T-1 (3mm) SOLID STATE LAMP
XM1   (2)  CALOGIC [Calogic, LLC]    R. F. Molded Chokes
XM2   (85)  XICOR [Xicor Inc.]    High Speed 5 Volt Byte Alterable Nonvolatile Memory Array
XM3   (1)  ETC [ETC]    R. F. Molded Chokes
XM4   (2)  ETC [ETC]    R. F. Molded Chokes
XM5   (2)  ETC [ETC]    R. F. Molded Chokes
XM6   (2)  ETC [ETC]    R. F. Molded Chokes
XM7   (1)  ETC [ETC]    R. F. Molded Chokes
XM8   (1)  ETC [ETC]    R. F. Molded Chokes
XM9   (2)  ETC [ETC]    R. F. Molded Chokes
XMG   (1)  ETC [ETC]    Surface Mount High Dynamic Range Mixer 3400-3600 MHz, Upconverter, High IP3
XMM   (8)  MOTOROLA [Motorola, Inc]    MICROMACHINED ACCELEROMETER 【500g AMPLIFIED
XMT   (45)  HP [Agilent(Hewlett-Packard)]    622 Mb/s Logic Interface DFB Laser Transmitter
XMU   (2)  SUNLED [SunLED Corporation]    50mm (2.0) 5x7 DOT MATRIX DISPLAY
XN0   (241)  panasonic    Silicon NPN epitaxial planer transistor
XN1   (41)  PANASONIC [Panasonic Semiconductor]    Silicon NPN epitaxial planer transistor
XN2   (9)  PANASONIC [Panasonic Semiconductor]    Silicon PNP epitaxial planer transistor
XN4   (49)  PANASONIC [Panasonic Semiconductor]    Silicon PNP epitaxial planer transistor
XN5   (5)  PANASONIC [Panasonic Semiconductor]    Silicon NPN epitaxial planer transistor
XN6   (24)  PANASONIC [Panasonic Semiconductor]    Silicon NPN epitaxial planer transistor
XN7   (1)      Composite Transistors
XN8   (1)      Composite Transistors
XO-   (13)  VISAY [Vishay Siliconix]    Full Size Clock Oscillators TTL Compatible
XOS   (27)  VISAY [Vishay Siliconix]    Half Size Clock Oscillator Enable/Disable
XOV   (1)  Vishay    Hybrid Crystal 1.0MHz to 45.0MHz
XP0   (114)  PANASONIC    Composite Transistors
XP1   (86)  Torex    Power MOSFET
XP2   (7)  PANASONIC [Panasonic Semiconductor]    Silicon PNP epitaxial planar type
XP4   (32)  PANASONIC [Panasonic Semiconductor]    Silicon NPN(PNP) epitaxial planer transistor
XP5   (5)  PANASONIC [Panasonic Semiconductor]    Silicon NPN epitaxial planer transistor
XP6   (19)  PANASONIC [Panasonic Semiconductor]    Silicon NPN epitaxial planer transistor
XP8   (1)  PANASONIC [Panasonic Semiconductor]    Silicon N-channel junction FET (Tr1) Silicon NPN epitaxial planer transistor (Tr2)
XPA   (2)  CALOGIC [Calogic, LLC]    Low Leakage Pico Amp Diodes
XPC   (119)  MOTOROLA [Motorola, Inc]    RISC Microprocessor Hardware Specifications
XPD   (14)  STMICROELECTRONICS [STMicroelectronics]    RF POWER TRANSISTORS The LdmoST Plastic FAMILY
XPG   (1)  LATTICE [Lattice Semiconductor]    The ispXPGA architecture
XQ1   (9)  XILINX [Xilinx, Inc]    QPro Series Configuration PROMs (XQ) including Radiation-Hardened Series (XQR)
XQ4   (105)  XILINX [Xilinx, Inc]    QPRO XQ4000E/EX QML High-Reliability FPGAs
XQC   (96)  XILINX [Xilinx, Inc]    QPro Virtex 2.5V QML High-Reliability FPGAs
XQR   (7)  XILINX [Xilinx, Inc]    QPro Series Configuration PROMs (XQ) including Radiation-Hardened Series (XQR)
XQV   (13)  XILINX [Xilinx, Inc]    QPro Virtex 2.5V QML High-Reliability FPGAs
XR-   (144)  EXAR [Exar Corporation]    IC,MODEM CIRCUIT,MODEM,DIP,16PIN,CERAMIC
XR1   (113)  EXAR [Exar Corporation]    Seventh Order Elliptic Low Pass Filters
XR2   (23)  EXAR [Exar Corporation]    High-Voltage, High-Current Darlington Transistor Arrays
XR4   (6)  EXAR [Exar Corporation]    High-Voltage, High-Current Darlington Transistor Arrays
XR6   (14)  EXAR [Exar Corporation]    DUAL UNIVERSAL ASYNCHRONOUS RECEIVER AND TRANSMITTER
XR7   (57)  SSE [Shanghai Sunrise Electronics]    PLANAR ZENER DIODE
XR8   (30)  EXAR [Exar Corporation]    CMOS QUAD CHANNEL UART (QUART)
XRA   (7)  STMICROELECTRONICS [STMicroelectronics]    UHF, EPCglobal Class-1 Generation-2, Contactless Memory Chip 432 bit with Multi-session Protocol, Anti-collision and Kill functions
XRD   (62)  EXAR [Exar Corporation]    CCD Image Digitizers with CDS, PGA and 10-Bit A/D
XRJ   (1)  ETC [ETC]    XRJ-FJ-260S
XRT   (98)  EXAR [Exar Corporation]    312MHZ CLOCK & CRYSTAL MULTIPLIER WITH LVDS OUTPUTS
XS0   (1)  STMICROELECTRONICS [STMicroelectronics]    VGA Color CMOS Image Sensor Module
XS1   (3)  CLARE [Clare, Inc.]    Multifunction Telecom Switch
XSD   (29)  CALOGIC [Calogic, LLC]    High Speed DMOS N-Channel Switch
XSM   (1)  ETC [ETC]    3.6 mm SIDE LOOK LAMP
XSS   (5)  CALOGIC [Calogic, LLC]    High-Speed Analog N-Channel DMOS FETs
XSU   (1)  ETC [ETC]    5x5mm RECTANGULAR SOLI D LAMP
XSX   (1)  ETC [ETC]    ASSEMBLY SOCKET STRIP
XSZ   (1)  ETC [ETC]    SUPER FLUX LED LAMP
XT2   (7)  VISAY [Vishay Siliconix]    Tuning Fork Crystal
XT3   (11)  VISAY [Vishay Siliconix]    Surface Mount Watch Crystal
XT4   (19)  Vishay    Low Profile Holder Type Crystal Units
XT5   (1)  Vishay    Surface Mount 9.8304MHz to 84.0MHz
XT6   (1)  LITTELFUSE [Littelfuse]    Switching Gas Discharge Tubes - Gas Plasma Voltage Dependent Switches
XT7   (1)  Vishay    Surface Mount 9.8304MHz to 70.0MHz
XT8   (1)  LITTELFUSE [Littelfuse]    Switching Gas Discharge Tubes - Gas Plasma Voltage Dependent Switches
XTA   (1)      CRYSTAL SMD 32.768000KHZ
XTR   (56)  BURR-BROWN [Burr-Brown Corporation]    4-20mA CURRENT LOOP TRANSMITTERS
XTU   (1)  Vishay    Quartz Crystals 3.6864MHz to 225.0MHz
XU3   (3)  CALOGIC [Calogic, LLC]    N-Channel JFET High Frequency Amplifier
XU4   (16)  CALOGIC [Calogic, LLC]    N-Channel JFET Monolithic Dual
XU5   (1)  ETC [ETC]    CLASS I TEMPERATURE COMPENSATION TYPE
XV7   (1)  Weltrend    Video Decoder with 2D YC comb filter
XW2   (38)  OMRON [Omron Electronics LLC]    Screw Terminal Block Cables
XWD   (12)  POWER-ONE [Power-One]    DUAL OUTPUT, 180 WATT
XWM   (29)  WOLFSON [Wolfson Microelectronics plc]    Stereo Digital Volume Control
XWS   (16)  POWER-ONE [Power-One]    High Power Package
XWT   (7)  POWER-ONE [Power-One]    High Power Package Trim and Enable Pin
XX-   (19)  ETC [ETC]    DC Tachometer Generators
XYN   (4)  ETC [ETC]    T-1(3mm) BI-LEVEL LED INDICATOR
XZD   (2)  SUNLED [SunLED Corporation]    SURFACE MOUNT DISPLAY
XZM   (2)  ETC [ETC]    1.0x0.5mm SMD CHIP LED LAMP
XZZ   (1)  ETC [ETC]    3.0x2.0mm SMD CHIP LED LAMP