Description
WE ARE RICH ELECTRONICS
WE PURCHASE AND RECYCLE
SURPLUS ELECTRONIC
COMPONENTS AND EQUIPMENT!
For sale here we have the above…
2 Pieces
(also printed on device is a 5 digit code eg. 24232- 24258)
418.05 MHz Resonator – Single Port• Designed for 418.05 MHz Transmitter Applications
• Low Series Resistance
• Quartz Stability
• Rugged, Hermetic, Low-Profile TO39 Case
• Complies with Directive 2002/95/EC (RoHS)
Please note:- these devices need to be treated correctly to avoid ESD damage, we transfer them from the original manufacturers packaging directly into anti static bags for shipment “untouched by human hand” as it were, for further information please see a useful customer feedback below.
The RO2021 is a true one-port, surface-acoustic-wave (SAW) resonator in a low-profile TO39 case. It provides reliable, fundamental-mode quartz frequency stabilization, of fixed frequency transmitters operating at 418.050 MHz.
The RO2021 is designed specifically for remote control and wireless security AM transmitters operating in the United Kingdom under DTI MPT 1340 and in the USA under FCC Part 15.
These products are designed to be the frequency control element in transmitters and receiver local oscillators.
Their use allows reduced receiver bandwidths, which results in improved sensitivity and immunity to interference.
Tighter centre frequency tolerances are becoming popular primarily in Europe.
RFM can provide as tight as +/-50 kHz currently.
These devices are quartz stabilized to ensure maximum temperature performance in a variety of applications.
The SAW Resonator product family includes one and two-port types.
The RO series is a line of true one-port devices with a lumped element model that is similar to that of a bulk crystal device.
One-port resonators are typically used in modified Colpitts oscillator configurations where the resonator is connected between the base of a transistor and ground.
These systems are typically required in applications such as automotive keyless entry, tire pressure monitoring, door and gate openers, personal and home security, automated meter readers, wireless point of sale terminals, bar code readers, identification tags, and computer peripherals.
Some much valued information from a satisfied customer:-
“Beware of ESD damage, it may not be immediately apparent, but results in much shortened device lifetime.
Failure can then occur prematurely within days, weeks, months or early years.
The effect is similar to a partially burnt through wire still conducting but “hanging on by a thread”.
Practical precautions:- Always wear an earthed wrist strap when handling devices (This is a MUST).
Avoid touching the connecting leads whenever possible.
Get yourself some plastic tweezers and use these instead of your fingers!
Once the devices are soldered into a PCB they are much less vulnerable.
In my professional past I have looked at photo micrographs (from research work carried out in Company) of opened damaged devices that were still working.
The evidence was crystal clear!”
For data sheet search…RO2021
Or go directly to…
http://www.qic.com.cn/qicfileserver/readFile.action?filePath=/pdf/RFM/RO2021.pdf
PLEASE NOTE!
These parts came to us as part of a lot of surplus stock from a large ‘Milspec’ Co. and have been kept in storage for some time, we have therefore classified them as ‘new other’. They are however pristine, stored with us still in their original packaging and ‘as new’ in all respects, the photographs are representative of their excellent condition, and, as with all our products they come with a full guarantee.
If you have similar items to this, or indeed any electronic components that are surplus to requirements please contact us with details.
