1© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard TD0001_NBL • 10/5/2018
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
One world. One KEMET
Benets
• High mechanical Q and excellent electro-acoustic
conversion eciency, providing a high output amplitude
• High speed of vibration due to piezoelectric element
• Fast and easy installation
• High reliability
• Operating temperature range from −40°C to +120°C
• Good amplitude linearity due to N–61 ceramics’ extended
temperature range
• RoHS/REACH compliant
Piezoelectric Transducers
NBL Langevin Bolt-on Transducers
Overview
KEMET’s Langevin-type transducers are used whereever
powerful ultrasonic waves must be generated. For
application exibility and ease of installation, these
transducers are mounted in a structure that can be bolted
virtually anywhere.
KEMET’s high-performance ceramic material NEPEC® N-61
is excellent for use in these Langevin transducers. KEMET
produces a number of this type of transducers, all featuring
high quality and excellent output levels, and all based on a
unique proprietary design.
Applications
• Cleaning equipment
• Ultrasonic treatment machines
• Welders for plastic
Ordering Information
NBL 45 28 2 H A 3
Series
Diameter of
Acoustic Wave
Radiation
Resonant
Frequency
Number of
Piezoelectric
Elements
Construction
Type
Radiation
Surface
Model
Type
NBL 15 = φ 15 mm
20 = φ 20 mm
45 = φ 45 mm
28 = 28 kHz
40 = 40.2 kHz
60 = 60 kHz
2 = 2 elements H = Horn
construction
(output surface has
step or horn shape)
S = Straight
construction
Blank = Not
available for
treatment machines
type
A = Threaded
type for cleaning
equipment
Blank
3
2© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard TD0001_NBL • 10/5/2018
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
Piezoelectric Transducers – NBL Langevin Bolt-on Transducers
Dimensions in mm
NBL45282H-A3 NBL45402H-A
NBL15602S NBL20602S
3© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard TD0001_NBL • 10/5/2018
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
Piezoelectric Transducers – NBL Langevin Bolt-on Transducers
Environmental Compliance
All KEMET Piezoelectric Transducers are RoHS and REACH compliant.
Article 33(1) of the REACH Regulation states that manufacturers and importers of articles (products) are required to notify
their customers of the presence of any Substances of Very High Concern (SVHC) in their products exceeding 0.1% by weight
and provide instructions on safe use of the product.
KEMET Corporation reports regarding the Article 33(1) of REACH Regulation as follows:
1. Applicable Product:
Piezoelectric transducers (NBL Series).
2. Report for content of REACH SVHC list:
The product(s) above contain a substance by more than 0.1wt% per product weight that was published in the 8th update of
the REACH SVHC substances (December 19, 2012).
3. Regarding safety of the piezoelectric transducers (Piezoceramic products):
The Piezoceramic that is used in this product becomes ceramic by sintering powder containing PZT as a main ingredient.
It is chemically stable, with minimum risks toward the human body or environment within the intended use of the product.
Please note that risks could occur in the case of inhalation or accidental oral uptake of powder ceramics.
4. Technical product information on the piezoelectric transducers (Piezoceramic products):
The manufacturing technique of the “piezoceramic products” whose main ingredient is Lead Titanium Zirconium Oxide
(PZT) has been established, and there is no alternative material that can exhibit superior performance than PZT at this
moment. Please note that the piezoceramic is listed as an exempt on RoHS (2011/65/EU) Annex III (7c.1).
5. Responsibility of piezoceramic manufacturers:
Piezoceramic manufacturers report information regarding PZT containment in their products to the customers to obey the
article 33 of the REACH regulation.
4© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard TD0001_NBL • 10/5/2018
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
Piezoelectric Transducers – NBL Langevin Bolt-on Transducers
Performance Characteristics
Item Performance Characteristics
Operating Temperature Range −40 to +120°C
Recommended Storage Condition −20 to +80°C
Resonant Frequency Range 28 – 60 kHz
Maximum Allowable Power Range 2.5 – 50.0 W
Table 1 – Ratings & Part Number Reference
Part
Number
Resonant
Frequency
(kHz)
Dynamic
Admittance
(mS)
Mechanical
Q
Static
Capacitance
(pF)
Maximum
Allowable
Velocity
(cm/S)
Maximum
Allowable
Power
(W)
Application Horn
Plate
Backing
Plate
Weight
(g)
NBL45282H-A3 28.0 40 500 4,000 40 501Cleaning equipment Alminium Strainless Steel 400
NBL45402H-A 40.2 15 500 4,000 50 501Cleaning equipment Alminium Strainless Steel 240
NBL15602S 60.0 25 500 850 50 2.52Treatment machines Alminium Alminium 30
NBL20602S 60.0 20 400 1,250 40 3.72Treatment machines Alminium Alminium 35
1 Maximum allowable power based on data where one unit is measured with a water load on one side.
2 Maximum allowable input in no-load state.
Electrical Characteristics
Temperature Characteristics
NBL45282H-A3 & NBL45402H-A
20
Resonant Frequency
27.0
27.2
27.4
27.6
27.8
28.0
28.2
50 100
Temperature (°C)
150
20
Ymo to Dynamic Admittance
20
30
40
50 100
Temperature (°C)
150
20
Static Capacitance
3,000
4,000
5,000
6,000
50 100
Temperature (°C)
150
20
Insulation Resistance (M
Ω)
1 × 104
1 × 105
5 × 104
50 100
Temperature (°C)
150
5© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard TD0001_NBL • 10/5/2018
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
Piezoelectric Transducers – NBL Langevin Bolt-on Transducers
Electrical Characteristics cont.
Horn Installation Reference Example
NBL15602S NBL20602S
Vibration
Vibration (µm)
0
2
4
6
8
10
No-load state
10 2 3
NBL15602S
Horn installation example
Input Power P(W)
4
NBL15602S
Vibration (µm)
0
1
3
4
2
5
6
7
No-load state
10 2 3 4
NBL20602S
Horn installation example
Input Power P(W)
5
NBL20602S
Packaging
Part Type Packaging Type Pieces per Box
NBL45282H-A3
Tray
30
NBL45402H-A
NBL15602S 160
NBL20602S
6© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard TD0001_NBL • 10/5/2018
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
Piezoelectric Transducers – NBL Langevin Bolt-on Transducers
Handling Precautions
Precautions to be taken when using piezoelectric transducers
(Please read these precautions before using our products)
Material selection, installation and activation of piezoelectric ceramics should be decided upon by users according to
the applications. For proper evaluation and decision, products should be tested repeatedly in both realistic and abnormal
operating conditions.
• Do not disassemble the product or remove the screw.
• Avoid excessive physical shock. Otherwise, the internal piezoelectric ceramic element may be damaged.
• Do not apply power exceeding its maximum allowance.
• Store the transducers preferably at ordinary temperatures (-20˚C to +80˚C). Avoid condensation on the product's surface.
• Handle products properly as industrial waste. When disposing, please contact your local waste disposal service and make
sure the disposal methods meet all legal requirements.
• Transducers' stock should be used promptly, preferably within
1 year of receipt.
Export Control
For customers in Japan
For products which are controlled items subject to the "Foreign Exchange and Foreign Trade Law" of Japan, the export
license specied by the law is required for export.
For customers outside Japan
Piezoelectric Transducers should not be used or sold for use in the development, production, stockpiling or utilization of any
conventional weapons or mass-destructive weapons (nuclear weapons, chemical or biological weapons, or missiles), or any
other weapons.
7© KEMET Electronics Corporation • KEMET Tower • One East Broward Boulevard TD0001_NBL • 10/5/2018
Fort Lauderdale, FL 33301 USA • 954-766-2800 • www.kemet.com
Piezoelectric Transducers – NBL Langevin Bolt-on Transducers
KEMET Electronics Corporation Sales Offi ces
For a complete list of our global sales o ces, please visit www.kemet.com/sales.
Disclaimer
All product speci cations, statements, information and data (collectively, the “Information”) in this datasheet are subject to change. The customer is responsible for
checking and verifying the extent to which the Information contained in this publication is applicable to an order at the time the order is placed. All Information given
herein is believed to be accurate and reliable, but it is presented without guarantee, warranty, or responsibility of any kind, expressed or implied.
Statements of suitability for certain applications are based on KEMET Electronics Corporation’s (“KEMET”) knowledge of typical operating conditions for such
applications, but are not intended to constitute – and KEMET speci cally disclaims – any warranty concerning suitability for a speci c customer application or use.
The Information is intended for use only by customers who have the requisite experience and capability to determine the correct products for their application. Any
technical advice inferred from this Information or otherwise provided by KEMET with reference to the use of KEMET’s products is given gratis, and KEMET assumes
no obligation or liability for the advice given or results obtained.
Although KEMET designs and manufactures its products to the most stringent quality and safety standards, given the current state of the art, isolated component
failures may still occur. Accordingly, customer applications which require a high degree of reliability or safety should employ suitable designs or other safeguards
(such as installation of protective circuitry or redundancies) in order to ensure that the failure of an electrical component does not result in a risk of personal injury
or property damage.
Although all product–related warnings, cautions and notes must be observed, the customer should not assume that all safety measures are indicted or that other
measures may not be required.
KEMET is a registered trademark of KEMET Electronics Corporation.
