Transducer Array

Product Specifications

Technical details and manufacturing context for Transducer Array

Definition

Within a Probe Generator, the Transducer Array serves as the core sensing and signal generation component. It consists of multiple piezoelectric elements arranged in specific patterns (linear, phased, matrix) that work collectively to produce controlled ultrasonic beams for non-destructive testing, medical imaging, or measurement applications. The array enables beam steering, focusing, and scanning capabilities that individual transducers cannot achieve. This directory entry describes the generic component class; actual models vary in element count, frequency, and housing. The array is typically integrated into a probe housing with an acoustic matching layer and backing material to optimize performance. Electrical connections are made via standard connectors (Micro-D or SMA) for system integration. The number of elements ranges from 16 to 256, determining resolution and field of view. Operating frequency spans 1–10 MHz, with higher frequencies improving resolution but reducing penetration. Element pitch should be ≤ half wavelength to avoid grating lobes, typically 0.1–1.0 mm. Relative bandwidth at -6 dB is 60–80%. Capacitance per element is 50–500 pF, affecting electrical matching. Impedance is 50–100 Ω for typical system integration. Operating temperature range is -20 to 70 °C; storage temperature is -40 to 85 °C. IP rating (IEC 60529) is IP54–IP67 for industrial environments. Housing material is aluminum or stainless steel for corrosion resistance and durability. Weight ranges from 50 to 500 g depending on element count and housing. Always verify model-specific values and standards with the legal manufacturer or supplier before procurement or integration.

Working Principle

Electrical energy is converted to mechanical vibrations (ultrasound) via the piezoelectric effect in each array element. These elements are excited with precise timing delays to create constructive interference patterns, forming directed ultrasonic beams. Returning echoes are converted back to electrical signals for processing. Beam steering and focusing are achieved by adjusting the delay pattern, enabling electronic scanning without moving parts.

Common Materials

Piezoelectric ceramic (PZT), Backing material, Acoustic matching layer, Electrode materials

Technical Parameters

Parameter	Typical range	Notes & selection driver
Number of Elements	16–256	Determines resolution and field of view
Operating Frequency	1–10 MHz	Higher frequency improves resolution but reduces penetration
Element Pitch	0.1–1.0 mm	Should be ≤ half wavelength to avoid grating lobes
Bandwidth	60–80 %	Relative bandwidth at -6 dB
Capacitance per Element	50–500 pF	Affects electrical matching
Impedance	50–100 Ω	Typical for system integration
Operating Temperature	-20–70 °C	Outside this range performance degrades
Storage Temperature	-40–85 °C	Non-operating limit
IP Rating	IP54–IP67	For industrial environmentsIEC 60529
Housing Material	Aluminum/Stainless Steel	Corrosion resistance and durability
Weight	50–500 g	Depends on element count and housing
Connector Type	Micro-D / SMA	Compatibility with system cabling

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Piezoelectric Element Part
Converts electrical signals to mechanical vibrations and vice versa

Material: Lead zirconate titanate (PZT) ceramic
Electrode Part
Provides electrical connection to piezoelectric elements

Material: Silver or gold plating
Acoustic Matching Layer Part
Improves acoustic impedance matching between transducer and medium

Material: Epoxy composite with tungsten powder
Backing Block Part
Damps vibrations and controls pulse duration

Material: Epoxy with heavy metal powder

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Probe Generator

View system integration details

Manufacturers of Transducer Array

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Frequently Asked Questions

What is the typical number of elements in a transducer array?

The number of elements typically ranges from 16 to 256, depending on the application. Higher element counts provide better resolution and field of view but increase complexity and cost.

How does operating frequency affect performance?

Higher frequencies (up to 10 MHz) improve resolution but reduce penetration depth. Lower frequencies (down to 1 MHz) penetrate deeper but with lower resolution. The optimal frequency depends on the material and inspection requirements.

What is the significance of element pitch?

Element pitch is the distance between adjacent elements. It should be ≤ half the wavelength to avoid grating lobes, which are unwanted side lobes that can cause artifacts. Typical pitch values are 0.1–1.0 mm.

What environmental ratings are available?

The IP rating (per IEC 60529) ranges from IP54 to IP67, indicating protection against dust and water. IP54 is splash-proof, while IP67 is dust-tight and protected against temporary immersion. Verify the specific rating for your model.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	0 to 100 bar
flow rate:	0 to 10 m/s
temperature:	-40°C to 150°C
slurry concentration:	0 to 30% solids by weight

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