LFTVXO009916
VCTCXO, 19.44 MHz, 0.5 ppm, HCMOS, 3.3 V, SMD, 7mm x 5mm
- Manufacturer: IQD FREQUENCY PRODUCTS
- Product type: Voltage Controlled - VC-TCXO Oscillators
- Frequency Nom:19.44MHz; Frequency Stability + / -:0.5ppm; Oscillator Output Compatibility:HCMOS; Supply Voltage Nom:3.3V; Oscillator Case:SMD, 7mm x 5mm; Product Range:-; Operating Temp
- Frequency Nom: 19.44MHz
- Product Range: -
- Supply Voltage Nom: 3.3V
- Frequency Stability + / -: 0.5ppm
- Operating Temperature Max: 85°C
- Operating Temperature Min: -40°C
- Oscillator Case / Package: SMD, 7mm x 5mm
- Oscillator Output Compatibility: HCMOS
| Delivery and price | |
|---|---|
| Units per pack | 1 |
| Price | 4.55 € |
| Current stock | 10+ |
| Lead time | 30 days |
## **CFPT-126** ## **ISSUE 1 ; 7 JANUARY 2005** ## **Delivery Options** - I Please contact our sales office for details ## **Package Outline** I 7.0 x 5.0 x 2.0mm SMD (surface mount device) ## **Environmental Specification** - I Storage Temperature Range -55 to 125°C - I Vibration: IEC 60068-2-6 Test Fc Procedure B4, 10-60Hz 1.5mm displacement, at 98.1 ms[-2] , 30 minutes in each of three mutually perpendicular axes at 1 octave per minute ## **Description** - I CFPT-126 is a surface mount temperature compensated voltage controlled oscillator (TCVCXO) providing a high degree of frequency stability over a wide temperature range ## **Supply Voltage** - I Shock: IEC 60068-2-27 Test Ea, 980ms[-2] acceleration for 6ms duration, 3 shocks in each direction along three mutually perpendicular axes - I Solderability: MIL-STD-202, Method 208, Category 3 - I 3.3V ± 5% ## **Frequency Stability** - I Temperature ±0.5ppm ( code E) - I Supply Voltage Variation ±0.3ppm * - I Load Variation (15pF ±10%) ±0.2ppm I After Reflow ±1.0ppm - Supply Voltage Variation : >30.0MHz to <40.0MHz, ±0.4ppm ## **Operating Temperature Range** - I -40 to 85°C (code X) ## **Supply Current** - I 3mA @ 20MHz typical ## **Output Compatibility** - I HCMOS - I Load: 15pF nom. - I Vol: <10% Vsupply - I Voh: >90% Vsupply - I Duty Cycle: 45/55% - I Rise Time: 8ns - I Fall Time: 8ns ## **Ageing** I ±1ppm / year typical in 1st year @ 25°C ## **Standard Stock Frequencies (MHz)** - I 10, 12.8, 13.0, 16.384, 19.44, 20.0, 26.0, 32.768 40.0MHz - Other frequencies may be available, please contact our sales office. ## **Frequency Adjustment** - I >±5ppm by means of 1.65±1V control voltage ## **Marking** - I CMAC and Batch Code I Stab/Temp code + Frequency Code + Date Code ## **Minimum Ordering Information Required** I Frequency + Model Number (Example 10.0MHz CFPT-126) ## **Outline in mm** **==> picture [219 x 434] intentionally omitted <==** **----- Start of picture text -----**<br> Pad Connections<br>7.0±0.15<br>1. Voltage Control<br>2. GND<br>3. Output<br>4. +Vs<br> T1, T2, T3, T4,<br> Do Not Connect<br>5.08<br>1 T1 2<br>T4 T2<br>4 T3 3<br>1.04 1.4 2.0<br>Solder pad layout<br>5.08<br>1.5<br>Output Waveform<br>tf tr +Vs<br>90% (VoH-VoL) VoH<br>50% (VoH-VoL)<br>10% (VoH-VoL)<br>VoL<br>0V<br>t<br>T<br>Duty cycle = t x 100(%)<br>T<br>0.9<br>0.6<br>2.0<br>0.79<br>5.0±0.15<br>1.2<br>4.20<br>**----- End of picture text -----**<br> ## **Manufacturing Information** - I Soldering: SMD product suitable for Convection Reflow soldering. Peak temperature 260°C. Maximum time above 220°C, 60 secs. - I Washing: Able to withstand aqueous washing process. - I Packaging: Tape and reel, details available on request. ## **Test Circuit** **==> picture [177 x 105] intentionally omitted <==** **----- Start of picture text -----**<br> Output<br>+Vs<br>0.1µF<br>4 3 15pF*<br>1 2<br>Voltage<br>Control<br>GND<br>**----- End of picture text -----**<br> - inclusive of probe and jig capacitance
Updated at April 23, 2026
IQD Frequency Products is a recognized market leader in the frequency control and specialized timing sector. Known for delivering highly reliable and precise solutions, the company serves a broad spectrum of applications ranging from commercial-grade electronics to high-reliability industrial and automotive systems. Their commitment to quality is underscored by stringent manufacturing and testing standards, including ISO 9001 and automotive-grade certifications such as AEC-Q200. The comprehensive selection of IQD components focuses primarily on foundational timing devices, notably an extensive range of quartz crystals and standard clock oscillators. These core components provide the stable and accurate frequency generation required for diverse circuit designs, microcontrollers, and communication interfaces. Available in a variety of frequencies, tolerances, and packaging options, these crystals and oscillators form the reliable backbone of countless digital and RF systems. For more demanding environments that require enhanced precision, the portfolio also features specialized oscillator configurations. This includes advanced Temperature Compensated (TCXO) and Voltage Controlled (VC-TCXO) oscillators. These highly engineered timing solutions are designed to maintain exceptional frequency stability across fluctuating temperatures and varying operational conditions, making them ideal for telecommunications, networking infrastructure, and precision instrumentation.
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