一、Characteristics
The R433 3030 resonator (R433 resonator for short) is used to suppress higher harmonics, image information, emission leakage signals and all kinds of parasitic clutter interference. The main feature of SAW resonator is that it is flexible in design, compatible with analog and digital circuits, and can realize a variety of complex functions. The group delay time is small, the deviation is small, the frequency selectivity is good, the input and output impedance error is small, the transmission loss is small, the anti-electromagnetic interference (EMI) performance is good, the reliability is high, the size is small, the weight is light, the device integration is high, the price is cheap and so on. The biggest disadvantage of the R433 sound meter resonator is that the bandwidth is too narrow (tens of KHZ), resulting in extremely slow download speed.
The R433 has a center frequency of 433.92MHz, a frequency tolerance of ±75KHz, and a package form of 3030. With small insertion loss (≤1.2dB), temperature (temperature: -25℃--+60℃; Storage temperature: -45℃--+85℃) Good characteristics, high integration, easy welding, good weldability, light weight, good performance, high stability, cheap and simpler than the traditional ceramic resonator installation, smaller volume and simpler than the traditional ceramic resonator installation, smaller volume. The R433 resonator can filter amplitude-frequency and phase-frequency characteristics with any desired accuracy, which is difficult to accomplish with other filters.
R433 resonator
Item
| Minimum | Typical | Maximum | Unit |
| Center Frequency | 433.845 | 433.920 | 433.995 | MHz |
| Insertion Loss(min) | - | 1.2 | 2.0 | dB |
| Quality Factor | Unloaded Q | - | 10850 | - | - |
| 50Ω Loaded Q | - | 1400 | - | - |
| Absolute Value during the First Year | - | ≤10 | - | ppm/y |
| DC Insulation Resistance between Any Two Pins | 1.0 | - | - | MΩ |
RF Equivalent RLC Model | Motional Resistance | - | 14.8 | 20 | Ω |
| Motional Inductance | - | 52.957 | - | µH |
| Motional Capacitance | - | 2.282 | - | fF |
| Pin 1 to Pin 2 Static Capacitance | - | 2.0 | - | pF |
| Operation Temperature | -40 | - | +85 | ℃ |
| Package style | SMD 3030 |
二、Package Dimension
| Pin | Configuration |
| 2 | Input |
| 5 | Output |
| 1、3、4、6 | Case Ground |
三、Typical Frequency Response
Typical Frequency Response
四、Application & attention
◆ The center frequency (433.920MHz) of the R433 surface acoustic wave resonator was measured at a temperature of + 25±2 ° C in a 50Ω test system with an insertion loss of 1.2dB.。
◆ Frequency aging refers to the change in the center frequency (433.920MHz) over time and is measured at +65 ° C (or above) for a long time. Typically, the degree of aging is highest in the first year after production and gradually decreases in subsequent years.
◆ arget temperature refers to the temperature measured from the lowest frequency of 433.845MHz to 315MHz and then to the highest frequency of 433.920MHz.
◆ The nominal frequency at any temperature can be calculated by :f = f0 [1-FTC (T0-TC)*2].
R433 resonator is widely used in test remote control, wireless transmitter module, wireless smart socket, smart door lock, wireless doorbell, wireless alarm, wireless communication system and remote transmitter. When used, the welding temperature should not be too high, and the time should not be too long. If reflow welding is used, reference temperature is recommended, and wave crest welding is not recommended. Products should be stored in the ambient temperature of -10℃~40℃, relative humidity is not more than 80%, the surrounding environment is not acidic, alkaline and other harmful gases in the warehouse. Do not soak when cleaning, it is recommended to wipe with alcohol.
The company has R433 sound meter resonators, R315 sound meter resonators, SMD sound meter resonators and various frequencies of various package sizes of sound surface resonators. For the frequency and package of routine use, timely delivery can be achieved.
