Murata, SMD Diaphragm External, Piezo Buzzer, up to 3V ac
- RS Stock No.:
- 7214940
- Mfr. Prt No.:
- 7BB-20-6
- Brand:
- Murata
Technical Reference
Legislation and Compliance
RoHS Certificate of Compliance
EU Directives 2011/65/EU and 2015/863 restrict the use of the 10 substances below in the manufacture of specified types of electrical equipment.
Whilst this restriction does not legally apply to components, it is recognised that component “compliance” is relevant to many customers.
RS definition of RoHS Compliance:
- The product does not contain any of the restricted substances in concentrations and applications banned by the Directive,
- and for components, the product is capable of being worked on at the higher temperatures required by lead–free soldering
The restricted substances and maximum allowed concentrations in the homogenous material are, by weight:
| Substance | Concentration |
| Lead | 0.1% |
| Mercury | 0.1% |
| PBB (Polybrominated Biphenyls) | 0.1% |
| PBDE ( Polybrominated Diphenyl Ethers) | 0.1% |
| Hexavalent Chromium | 0.1% |
| Cadmium | 0.01% |
| DEHP (Bis (2-Ethylhexl) phthalate) | 0.1% |
| BBP (Benzyl butyl phthalate) | 0.1% |
| DBP (Dibutyl phthalate) | 0.1% |
| DIBP (Diisobutyl phthalate) | 0.1% |
The supplier of the item listed below has informed RS Components that the product is "RoHS Compliant".
RS Components has taken all reasonable steps to confirm this statement. Information relates only to products sold on or after the date of this certificate.
| RS stock number | 7214940 |
| Product description | Murata, SMD Diaphragm External, Piezo Buzzer, up to 3V ac |
| Manufacturer / Brand | Murata |
| Manufacturer part number | 7BB-20-6 |
RS Components Ltd, Birchington Road, Corby, Northants, NN17 9RS, UK
Statement of Conformity
This statement confirms that the product detailed below complies with the specifications currently published in the RS media and has been subject to the strict quality conditions imposed by RS Components’ internal management systems. Furthermore and where applicable, it confirms that all relevant semiconductor devices have been handled and packed under conditions that meet the administrative and technical requirements of ANSI/ESD S20.20 and EN61340-5-1 electrostatics control standards.
| RS stock number | 7214940 |
| Product description | Murata, SMD Diaphragm External, Piezo Buzzer, up to 3V ac |
| Manufacturer / Brand | Murata |
| Manufacturer part number | 7BB-20-6 |
The foregoing information relates to product sold on, or after, the date shown below.
RS COMPONENTS
| Date | Dec 27, 2024 |
RS Components Pte Ltd Robinson Road, P.O. Box 1582, Singapore 903132
Country of Origin: TH
Product Details
Murata 7BB Piezoelectric Diaphragms
This range of piezoelectric transducers from Murata are available with various resonance frequencies and impedance values. With an external drive, these piezoelectric transducers have no contacts, and are highly reliable with no noise. 7BB piezoelectric diaphragms are compact, lightweight and thin. For the voltage type, this series features low power consumption.
Product Application Information
Suitable for consumer and industrial use, recommended applications include digital cameras, burglar alarms, clocks and calculators.
Specifications
| Attribute | Value |
| Brand | Murata |
| Mounting Type | Surface Mount |
| Maximum Supply Voltage | 3 V ac |
| Drive Type | External |
| Tone Type | Diaphragm |
| Diameter | 20 mm |
| Height | 0.42 mm |
| Dimensions | 20 x 0.42 mm |
| Maximum Frequency | 6.9 kHz |
| Capacitance | 10 nF |
| Minimum Frequency | 5700 Hz |