Bomar Crystal is happy to introduce a new line of Ultra Miniature SMD crystals and oscillators that measure 2.5x2.0mm.
The ultra light crystal line is designed to offer high precision and high reliability with frequencies from 15.000MHz to 48.000MHz in the fundamental mode. Standard temperature offered is -10+70C but optional -40+85C is available. Applications for the crystals are Mobile Phones, Bluetooth, W-Lan, ISM Band Radio and Clocks for MPU.
The ultra low Phase Noise oscillators are designed to offer low power consumption with the availability of Tri-State Function and extended temperatures of -40+85C. Frequencies are available from 0.750MHz to 110.000MHz in Fundamental or 3rd OT Mode. Current consumption is 30mA max and Phase Jitter from 12KHz to 20.000MHz is 1pS max with P-P Jitter of 25pS max. Typical start up time of 5ms max and Voltages available of 1.8V, 2.5v and 3.3V with TTL/HCMOS Logic. Applications used with these oscillators are PC, DVD, PDA, TV, HDTV, ISDN and Gb Ethernet.
Please feel free to contact Bomar Crystal to find out more about these new products and others that are currently in final testing. Call 800-526-3935.
Jan 10, 2000
Bomar Crystal Certifies that all SMD crystals, SMD Oscillators, TCXO, OCXO, VCXO, VCTCXO, Clock Oscilator and Quartz Crystal products meet the European Union Initiative for RoHS Compliance

Made in
the USA
Bomar Crystal
201 Blackford Avenue Middlesex, NJ 08846
Bomar Crystal produces TCXOs and VCTCXOs with a wide range of output options, low jitter and can are available in HCMOS or Clipped Signware (S/B low jitter and available in HCMOS or Clipped Signwave). Tolerance to 1PPM with temperatures to -30+70C. Packages include
Thru Hole (Full and Half Size), Metal SMD in Gull Wing or 11.4x9.6mm or
Ceramic SMD. Call for options.
All TCXOs are available RoHS approved and excellent for Test Equipment,
Networking Equipment.
| Frequency Range | 1.000 - 60.00 MHz |
| Frequency Stability | +- 1PPM to +- 10PPM over the specified operating temperature range |
| Temperature Range (Operating) |
-40°C to +85º C |
| Temperature Range (Storage) |
-40º C. to +85º C. |
| Supply Voltage | +5.0VDC 5% +3.0VDC 5% |
| Initial Calibration Tolerance | With trimmer: Adjustable to the nominal frequency Without trimmer: +-3PPM at 25ºC. |
| Elec. Freq. Tuning (VCTCXO only) |
+3.0VDC:+-5PPM min. for +1.5V +-1.0V (max. of +-80PPM available) +5.0VDC: +-6PPM min. for +2.5V +-2.0V |
| Output Voltage | TTL Logic High: 2.4V Min. / Logic Low: 0.4V Max. CMOS Logic High: 90% VDD Min. / Logic Low: 10% VDD Max. |
| Rise and Fall Time | TTL 5nS from 1.5V to 2.4V CMOS 5nS from 10% to 90% VDD |
| Duty Cycle | TTL 40% to 60% measured at 1.4V CMOS 40% to 60% measured at 50% VDD |
| Current | 5 - 25mA Max. depending on the frequency and input voltage |
| Start Time | 10mS Max. |
| Output Voltage | +3.0V : 0.8V p-p Min. +5.0V : 1.0V p-p Min. |
| Current | +3.0V : 1.0mA Max. +5.0V : 2.0mA Max. |
| Load | 10K ohms/15pF |
Note: Parameters shown above for TCXO and VCTCXO are general specifications. Detailed specification sheets for TCXO and VCTCXO are available upon request. Call for details.
TCXO - Package Style A |
VCTCXO - Package Style B |
TCXO - Package Style C |
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| Pin Connections Pin 1:Vc for VCTCXO, no pin for TCXO Pin 7:Ground Pin 8:Output Pin 14:Supply voltage |
Pin Connections Pin 1:Vc for VCTCXO, NC for TCXO Pin 7:Ground Pin 8:Output Pin 14:Supply voltage |
Pin Connections Pin 1:Vc for VCTCXO, NC for TCXO Pin 7:Ground Pin 8:Output Pin 14:Supply voltage |
| VCTCXO - Package Style D | VCTCXO - Package Style E | VCTCXO - Package Style F |
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| Pad Connections Pad 1:Vc for VCTCXO, NC for TCXO Pad 2:Ground Pad 3:Output Pad 4:Supply voltage |
Pad Connections Pad 1:Vc for VCTCXO, NC for TCXO Pad 2:Ground Pad 3:Output Pad 4:Supply voltage |
Pad Connections Pad 1,2,4:Ground Pad 3:Output Pad 5:Vc for VCTCXO; NC for TCXO Pad 6:Supply voltage |
A TCXO is a Temperature-compensated crystal oscillator. It is the Crystal Oscillator with good temperature characteristics across a wide temperature range.
SMD crystals and TCXO oscillators range in function, but each also come in different types. SMD crystals, also known as quartz crystals, come in ceramic, metal, and plastic. Some companies, who make SMD crystals, also sell them in different quartz packages. SMD crystals are the X in TCXO oscillators. TCXO oscillators help regulate temperature in refrigerators, as well as other machines that require heating and cooling. TXCO oscillators could not work without SMD crystals. Both SMD crystals and TCXO oscillators help everyday functions. I think it is rather interesting how few people know about TCXO oscillate and SMD crystals.
TCXO, VCXO, VCTCXO, OCXO, SMD Crystals, and a TCXO Oscillator all have crystals in them. This allows them to control functions of machines. VCXO is found in digital TVs, and OCXO are tied to radio frequencies. A SMD Crystals has important functions as well. It is difficult to define all VCXO, TCXO, OCXO, VCTCXO, SMD Crystals, because each explanation requires an understanding of basic engineering. If you do a search for VCXO, TCXO, OCXO, VCTCXO, SMD Crystals, or TCXO Oscillators chances are you won’t find a dictionary definition, but I wish you luck.
I have always wondered what a VCTCXO was. The day I decided to find out I had a do a lot of research. In short, what I found was that a VCTCXO is a Voltage Controlled Temperature Compensated Crystal Oscillator. Now, a VCTCXO is different than a VCXO, because VCTCXO has greater stability. That is due to the fact that a VCTCXO is a VCXO with a temperature compensation network inside. Everyday functions of a VCTCXO are usually connected with wireless telecommunications, such as portable telephones, CATV, PLL Circuits and more. Who knew that something that looks like roman numerals could mean something that didn’t have much to do with numbers?
A TCXO can also be called a TCXO oscillator. If you know this simple fact you will be better suited for buying what you need. It is difficult to find the information you are looking for, so you need to call an engineer or distributor. That person can help to explain better what a TCXO oscillator. Its basic function is to help with the stabilization of frequencies and temperature. A TCXO can help many everyday operations. A TCXO can be found in radios and even refrigerators. VCXO deals with frequency, where as a VCTCXO and TCXO both deal with temperature. Finding VCXO, TCXO & OCXO are hard things to do. There are not many places to turn to for help, and so you must be carful in choosing.