TXC Corporation Quartz Crystals and Oscillators

TXC Corporation frequency control components for telecom, industrial automation and automotive electronics: MHz and 32.768 kHz quartz resonators, TSX crystals, XO, TCXO, VCXO and OCXO oscillators.

High-frequency MHz quartz crystal units and temperature sensing crystals TSX

Ultra-miniature SMD quartz crystal resonators of series 7M, 7A, 8Z and 8Y generate stable reference frequencies for industrial controllers, network transceivers and embedded computing boards. TSX configurations integrate an internal thermistor for real-time thermal frequency compensation.

Seam-sealed ceramic SMD packages ranging from 1.2x1.0 mm up to 5.0x3.2 mm footprints
Low equivalent series resistance ESR and high quality factor using precision AT-cut quartz
Tight initial frequency tolerance and minimal long-term aging rate across industrial temperatures
TSX versions with integrated NTC temperature sensor for wireless transceivers and IoT modules

Tuning-fork 32.768 kHz quartz crystal resonators and low-power kHz XO oscillators

Tuning-fork quartz resonators of series 9HT10, 9HT11, 9HT12, 7V and complete kHz XO oscillators at 32.768 kHz provide accurate real-time clock RTC timing for smart utility meters, programmable logic relays, industrial data loggers and battery-operated telemetry terminals.

Compact low-profile SMD footprints engineered for high-density printed circuit board layouts
Stable parabolic temperature turnover characteristic of precision tuning-fork quartz elements
Ultra-low current consumption in 32.768 kHz oscillator units for battery-backed standby circuits
Standard load capacitance options of 6 pF, 7 pF, 9 pF and 12.5 pF for industrial RTC ICs

Clock crystal oscillators MHz XO with CMOS and differential output interfaces

Industrial clock oscillators of series 7W, 7X, 7C and programmable timing units deliver clean clock signals for processors, FPGAs, Ethernet switches and optical transceiver modules. Available in single-ended CMOS versions as well as high-speed differential signaling configurations.

Single-ended CMOS logic levels alongside differential LVDS, LVPECL and HCSL output standards
Low integrated phase jitter performance suited for high-speed serial communication links
Supply voltage ratings of 1.8 V, 2.5 V and 3.3 V with tri-state Output Enable control pin
Programmable oscillator variants supporting custom frequency synthesis across wide MHz ranges

Temperature compensated crystal oscillators TCXO for GNSS and radio communication

Precision temperature compensated crystal oscillators of series 7L, 7Q and 7Z maintain tight frequency stability under rapid ambient thermal shifts. These components serve professional GNSS satellite navigation receivers, radio repeaters, small-cell base stations and wireless modems.

Tight frequency stability down to ±0.5 ppm and ±2.0 ppm across operating temperature ranges
Miniature hermetically sealed SMD packages with low supply voltage pushing sensitivity
Available with Clipped Sinewave output or buffered CMOS square-wave output signal levels
Optional voltage frequency control pin VCTCXO for fine tuning inside synchronization loops

Voltage controlled oscillators VCXO and oven controlled ThermSym OCXO units

VCXO units of series 7P and 7N provide smooth frequency tuning via control voltage inside phase-locked loop PLL circuits. ThermSym OCXO oven controlled oscillators with internal thermal chamber regulation serve master timing nodes in telecommunications, enterprise switches and servers.

Linear frequency pullability slope and low close-in phase noise in VCXO designs
Ultra-high thermal frequency stability in ThermSym OCXO units via precision oven control
Fast thermal warm-up profile and minimal daily aging drift of SC-cut and AT-cut resonators
Engineered for IEEE 1588 PTP, SyncE network synchronization and optical transport equipment

Automotive frequency control components for ADAS, telematics and electric vehicles

The automotive series of TXC quartz crystal resonators and oscillators is engineered to meet AEC-Q200 stress qualification standards for passive and timing electronics. These components operate in ADAS radar and camera modules, electric vehicle powertrains, infotainment and TPMS sensors.

Extended operating temperature ratings from -40 °C up to +125 °C and +150 °C grades
Enhanced resistance to mechanical vibration, shock loads and harsh thermal cycling
Timing solutions for CAN, LIN, Automotive Ethernet buses and surround-view camera links
Miniature packages tailored for tire pressure monitoring TPMS, V2X telematics and safety ECUs

Manufacturing facilities and engineering profile of TXC Corporation

Founded in 1983 in Taiwan with headquarters and main production facilities in Ping Cheng District, Taoyuan City, TXC Corporation has over four decades of specialized experience in designing and manufacturing frequency control components.

Large-scale factories in Taoyuan, Ningbo and Chongqing operate automated photolithography lines, plasma etching chambers and vacuum seam-sealing equipment for ceramic SMD packages.

The product portfolio spans MHz and kHz quartz crystal units, temperature sensing crystals TSX, CMOS and differential clock oscillators, temperature compensated oscillators TCXO, voltage controlled oscillators VCXO and oven controlled ThermSym OCXO modules.

Selection criteria for quartz crystal resonators by load capacitance and ESR

Selecting a passive quartz crystal resonator for a microcontroller or transceiver IC requires matching nominal frequency, load capacitance and equivalent series resistance ESR.

Any mismatch between crystal load capacitance and external matching capacitors shifts the operating frequency outside the allowable communication synchronization window.

To ensure reliable oscillator startup and low power dissipation, engineers select miniature SMD series 7M, 7A, 8Z and 8Y featuring low series resistance, high quality factor AT-cut quartz wafers and hermetically sealed ceramic enclosures.

Applying 32.768 kHz tuning-fork crystals and temperature sensing TSX units

In smart utility meters, flow instruments, programmable logic controllers and industrial event recorders, calendar timekeeping relies on real-time clock RTC circuits running at 32.768 kHz.

Tuning-fork resonators of series 9HT10, 9HT11, 9HT12 and 7V deliver predictable parabolic thermal characteristics and ultra-thin footprints.

For compact wireless transceivers and navigation modules, TXC developed the TSX series containing an embedded NTC thermistor inside the package, enabling the host RF chip to sense crystal temperature directly and compensate thermal frequency drift.

Comparing single-ended CMOS clock oscillators and differential interfaces

Active MHz XO clock oscillators are chosen according to clock frequency, processor architecture and phase jitter specifications.

Microcontrollers, industrial automation controllers and standard peripheral buses typically utilize single-ended CMOS outputs powered at 1.8 V, 2.5 V or 3.3 V with an Output Enable pin.

High-speed data links, Ethernet switches, optical transceivers and server motherboards require differential output standards such as LVDS, LVPECL and HCSL, which reject common-mode noise and achieve sub-picosecond integrated phase jitter.

Frequency stability under harsh conditions: TCXO, VCXO and ThermSym OCXO

When standard crystal thermal stability is insufficient for radio channel spacing or network timing synchronization, active compensation architectures are deployed.

Temperature compensated oscillators TCXO of series 7L and 7Q hold frequency stability within sub-ppm tolerances across outdoor thermal swings in base stations and GNSS receivers.

Voltage controlled oscillators VCXO operate inside phase-locked loops for clock recovery and jitter cleaning, while oven controlled ThermSym OCXO modules provide ultra-stable master timing references for telecom core nodes.

Part number identification, datasheet verification and quotation workflow

To request a quotation for TXC frequency components, provide the complete manufacturer part number from your bill of materials, a photo of the component package marking or the required electrical parameters.

The ordering code defines series footprint, nominal frequency, calibration tolerance, thermal stability, load capacitance or output logic standard.

Our engineering team cross-checks specifications against manufacturer datasheets, verifies land pattern dimensions and prepares commercial quotations with transparent delivery schedules to industrial facilities.

TXC Corporation and model names are trademarks of their respective owners and are used only to identify the equipment for which we source parts. SpareX is not an official dealer, distributor or representative of TXC Corporation and is not affiliated with the trademark owner. Origin, documents and warranty are stated for each item in the quotation.