2 for $1.00
2 piece minimum order
10 or more $0.35 each
Matsushita #0D24K2. 0.95" diameter x 0.38" metal case. 0.65" long pc leads on 0.4" centers.
Average Customer Review:  (11 Reviews) Write A Review

Customer Comments

Average Customer Review:  (11 Reviews) Write A Review

A customer from On Earth as it is in Austin
A Nice Unit, But Watch Polarity
Characterized 320 of these units. Manufacturing tolerances are pretty tight overall. Average values for 320 units:
Clamping (DC) Capacitance (C0): 2.81 nF
Fctr: 24.495 kHz
BW (3dB): 906 Hz

Watch polarity, however. Some of these units are connected 'backward' internally. Two otherwise identical units will, for example, under identical circumstances produce (as receivers) electrical outputs that are 180 degrees out-of-phase. In some applications correct phasing is important, so beware.

All 320 units functioned satisfactorily at 21 Vp-p (sine) drive levels. 21 Vp-p seems to be the max drive level for this style of PZT, but there isn't much literature available Out There for these 24 kHz units (most extant literature - such as it is - centers on the more commonly available 40 kHz units).

Btw: I selected a handful of units for destructive testing and found that several units survived up to 122 Vp-p drive levels at resonance for the two-hour duration of this part of my tests. Several units 'bought the farm' at less than 35Vp-p drive levels, so I would assume the max drive levels for rest of the lot are probably 'all over the map' as well.

Hope this info was helpful.

A customer from Los Angeles, CA
hookup info?
are these parts polarized? how much current should they draw? can you hear/feel when one is emitting?
forgive the newbish questions, but this is my first time experimenting with ultrasonic transducers, and I'm having trouble measuring any coil resistance or current through the device @ 5v. thank you.

A customer from CA, USA
Is a datasheet out there?
I'd like to design this part in and having a datasheet on hand would be helpful. Is there one out there anywhere?

A customer from Woodburn, OR US
Any data sheet on the XDR-24? Can't locate.
The marking on the back side appears to be a Mitsubishi logo, but cannot find any reference to a data sheet on this item.

Anyone lucky enough to find one?

Email [email protected]

A customer from Salem, OR USA
Excellent Experimental Sensor
These are excellent units. So much so I bought 30 of them for my robotics experimentation. They are extremely sharp, requiring a signal between 23.5 and 24.6khz. Units can be used as both receiver and transmitter. I set up a test rail, spacing two transducers 30cm apart. With a square wave of 5 volts fed into one transducer I read a signal of 60mv on the second transducer, used as a receiver.
In my application my receiver is an op amp with gain of 10 feeding an LM567 tone decoder. With 1.2 volts peak-to-peak, fed into the sending transducer, the tone decoder recogizes the signal at the distance of 1.5 meters, with the receiving transducer set at an angle of 45 degrees to the sender. These results assume some fine tuning of LM567 components