General

Benders

Indicators / Sirens

Transducers

Microphones

Speakers

General

SPL Calculator for Distance

From: To: Add:
20 cm 10 cm 6 dB
30 cm 10 cm 10 dB
60 cm 10 cm 16 dB
100 cm 10 cm 20 dB
Back to top

Wave solder profile

Wave Solder Profile (image)

Back to top

Reflow profile

Wave Solder Profile (image)

Back to top

How does PUI Audio's part numbering system work?

Projects Unlimited has adopted a "Smart Part Numbering System" that includes the device's parameters. This allows you to identify the device type, size, voltage, frequency and so on just by reviewing the part number. Note: The “Smart Part Numbering System” does not apply to all parts.

Part Numbering System (PDF)

Back to top

Does PUI comply with the RoHS requirements?

After the European Union passed the “Restriction of the use of certain hazardous substances in electrical and electronic equipment”, commonly known as “RoHS”, PUI Audio has worked diligently to comply with the RoHS requirements.

RoHS Update (PDF)

Back to top

Does PUI Audio use any of the chemical substances listed in the European Union's REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) list?

With the increasing concerns of hazardous substances in our environment, we would like to inform you that our products do not contain any of the chemical substances listed below per the European Union's REACH Substance of Very High Concern (SVHC) candidate list.

REACH List (PDF)

Back to top

Our Product Availability Statement

Product Availability (PDF)

Back to top

Benders

How are benders constructed?

3D Exploded Bender Diagram (PDF)

Back to top

What is a feedback?

The ceramic can be configured with or without a feedback. The feedback is used in conjunction with an external circuit, see figure 1, to monitor the operation of the piezo bender and adjust the input signal to maintain a consistent output frequency. The resultant effect is an output with higher sound pressure level (dBA) and lower distortion due to frequency drift.

Feedback Circuit Diagram (PDF)

Back to top

How do you solder them?

Bender Soldering Process (PDF)

Back to top

Indicators / Sirens

What tones are available?

Continuous, Fast pulse, Slow pulse, Siren, Warble, Chime, Multiple

Back to top

How are they constructed?

Exploded Indicator Diagram (image)

Back to top

What are the mounting options for indicators and sirens?

Surface mount, Thru-hole, Flange mount, Panel mount, Bracket

Back to top

Transducers

What are the mounting options for transducers?

Surface mount, Thru-hole, Flange mount, Panel mount

Back to top

What are some suggested drive circuits for transducers?

Transducer Drive Circuit Explanation (PDF)

Back to top

How are they constructed?

Exploded Transducer Diagram (image)

Back to top

Microphones

What mounting options are available for PUI Audio microphones?

Pin, Solder Pad, Bullseye

Back to top

What is the temperature range of PUI Audio microphones?

Operating: -20C ~ +70C, Storage: -40C ~ +85C

Back to top

How do you solder to microphones?

Lead Free Mic Soldering Explanation (PDF)

Back to top

What is the difference between omni, uni and noise canceling?

Microphone Directionality (PDF)

Back to top

Speakers

What mounting options are available for PUI Audio speakers?

Surface mount, Thru-hole, Flange

Back to top

What cone materials are available?

Paper, Mylar, Cloth, Treated Paper

Back to top

How is SPL measured for PUI Audio speakers?

Speaker Power and Distance (PDF)

Back to top