Ultrasonic Transducers
Part Number:
Date:
4/29/13
Dimensions:
mm (in.)
255-400ET18S-RO
255-400ER18S-RO
ø17.50
(ø.689)
ø18
(ø.71)
12
(.472)
10
(.393)
RESIN
ø1.2x2
(ø.047)
DIAPHRAGM
3.20
(.126)
Ground
8.40
(.33)
10
(.393)
Impedance/Phase Angle vs. Frequency
100000
255-400ET18S-RO
Tested under 1Vrms Oscillation Level
90
70
Impedance (Ohm)
Impedance (Ohm)
10000
30
10
-10
1000
-30
-50
-70
100
35
36
37
38
39
40
41
42
43
44
45
Frequency (KHz)
-90
Phase Angle (Degree)
Phase Angle (Degree)
125
120
115
105
100
95
90
85
35
36
37
38
39
40
41
42
43
44
45
Frequency (KHz)
SPL (dB)
110
50
255-400ER18S-RO
Ultrasonic Transducers
Sensitivity/Sound Pressure Level
Tested under 10Vrms @30cm
-50
-55
-60
Sensitivity (dB)
-65
-70
-75
-80
-85
-90
KT-400556
Electrical Specifications:
• Center
Frequency: 40.0±1.0KHZ
• Sensitivity:
-70dB min
• Bandwidth:
1.5KZ @ -6dB
• Capacitance:
2900±20%pF @ 1 KHZ
• Sound
Pressure Level: 110dB @ 0dB re 0.0002 µbar
Mechanical Specifications:
• Operating
Temperature: -30°C to +70°C
• Storage
Temperature: -40°C to +80°C
Notes:
•
RoHS Compliant
Available from Mouser Electronics
www.mouser.com
(800) 346-6873
Specifications are subject to change without notice. No liability or warranty implied by this information. Environmental compliance based on producer documentation.
