SONER dual-frequency ultrasonic beauty transducer component.
The short answer
Choose a beauty transducer by the requirements of the complete device, not by the frequency printed in a product name. Start with the operating mode your design needs. Then check the housing and contact geometry, measured impedance and capacitance, driver operating range, mounting and coupling arrangement, duty cycle, and temperature rise under the intended load. A nominal 1 MHz component is not automatically interchangeable with another 1 MHz component. A 1 MHz and 3 MHz design needs separate electrical and system checks in each mode.
If you are still defining the component architecture, begin with the SONER ultrasonic beauty transducer range and send the intended device drawing and driver details before selecting a sample.
What do 1 MHz and 3 MHz actually tell an OEM buyer?
The numbers identify intended operating frequency or modes. They help narrow a component search, but they do not specify the impedance curve, capacitance, mechanical dimensions, contact surface, acoustic output under load, or suitability for a particular driver. Piezoelectric response changes with frequency; geometry and mounting also influence resonance. CeramTec's technical article discusses resonance and impedance as design inputs. Piezo.com's electronics overview explains electrical behavior near resonance.
These general principles inform component selection. They do not establish treatment depth or clinical performance for a specific SONER part; finished-device applications require their own evidence.
Single frequency or dual frequency?
| Option | Component decision | Engineering checks | SONER route |
|---|---|---|---|
| 1 MHz single frequency | One component for a defined operating mode and enclosure | Envelope, mounting, contact face, impedance, capacitance, driver and loaded temperature | Compare the 1 MHz facial transducer and 1 MHz body transducer by actual assembly design. |
| 1 MHz + 3 MHz dual frequency | One transducer assembly with two intended operating modes; not two separate heads | Response in both modes, driver switching, loading, coupling and temperature at each mode | Review the 1 MHz and 3 MHz dual-frequency component. |
The choice is not simply that more frequencies are better. A single-frequency part may fit a one-mode brief. A dual-frequency part can serve a device architecture that calls for two modes within one assembly, but adds driver and test requirements.
Six checks before approving a sample
1. Mechanical envelope and contact geometry
Supply housing diameter, available height, fixing method, contact-face dimensions, cable exit and connector constraints. For replacement projects, include a drawing or sample of the existing part.
2. Impedance, capacitance and measurement conditions
Ask for the measurement method and frequency sweep, not a single unexplained impedance number. Record whether values came from a loose component or mounted assembly, and the temperature and load during measurement. Agree acceptance limits for the actual project.
3. Driver range and mode switching
Share the driver's frequency range, voltage and current limits, control method, matching network and protection behavior. For dual frequency, specify how the electronics select each mode and respond around each operating point.
4. Mounting, coupling and load
State how the component is mounted, which surfaces are coupled, and the representative load used in evaluation. Compare samples under consistent conditions rather than mixing loose-component and finished-device readings.
5. Duty cycle and temperature rise
Specify on/off cycle, operating duration and ambient conditions. Test at the planned duty cycle in each intended mode. Temperature limits and output behavior must come from the particular design and its measurements.
6. Sample and batch acceptance
Agree which readings will be recorded on samples and production units: dimensions, capacitance, impedance or resonance at each mode, connector polarity and loaded checks. Define the fixture and acceptance window together.
Can one 1 MHz component replace another?
Only after compatibility testing. Match the housing and contact face, then compare electrical response and driver operating point. Check mounting, connector, lead routing, coupling, duty cycle and temperature in the finished assembly. The matching frequency label is a starting filter, not a replacement approval.
What changes when one component supports two frequencies?
For the current SONER 1 MHz + 3 MHz product route, both modes belong to one transducer assembly. Each needs its own impedance and loaded-system evaluation. The driver needs checks for switching and operating stability. The dual-frequency product page shows the available configuration. Share your drawing and driver specification to discuss integration.
What should an OEM team include in the RFQ?
- Device concept and intended operating mode or modes.
- Housing and contact-face drawing, mounting method, connector and lead layout.
- Driver output range, switching method, matching circuit and protection limits.
- Existing component measurements for a replacement project.
- Coupling or load, operating cycle and ambient conditions.
- Required sample and production acceptance readings, quantity and target schedule.
Send your drawing and driver requirements for an OEM review. If some details are still open, identify them so the sampling plan can address them.
Frequently asked questions
Does dual frequency mean two transducer heads?
Not for the SONER 1 MHz + 3 MHz route discussed here. It concerns one assembly with two intended operating frequencies.
Can any 1 MHz driver operate the dual-frequency component?
Compatibility cannot be assumed from labels. The output and matching circuit must be checked at both modes with the actual assembly and load.
Is a 1 MHz beauty transducer automatically a HIFU component?
No. HIFU is a specific system and application claim; a frequency label alone does not establish it.
Sources and scope
- SONER beauty transducer category and linked 1 MHz and dual-frequency product routes.
- CeramTec: Ultrasonic Sensors and Transducers, general piezoceramic design and electronics context.
- Piezo.com: Electronics Overview, general electrical behavior near resonance.
This checklist combines general engineering principles with SONER component-selection questions. It does not replace project drawings, agreed test conditions or finished-device assessment.
