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Product Detailed Parameters
- Description：BUZZER 2.83V 51MM TH
- Series：-
- Mfr：East Electronics
- Package：Tray
- Driver Circuitry：-
- Input Type：-
- Frequency：20kHz, 40kHz
- Technology：-
- Operating Mode：Continuous
- Duration：-
- Sound Pressure Level (SPL)：95dB @ 2.83V, 50cm
- Current - Supply：-
- Port Location：-
- Operating Temperature：-20°C ~ 70°C
- Approval Agency：-
- Ratings：-
- Ingress Protection：-
- Mounting Type：Through Hole
- Termination：PC Pins
- Height - Seated (Max)：0.728" (18.50mm)
- Voltage - Rated：2.83 V
- Voltage Range：1 ~ 8V
- Size / Dimension：2.008" Dia (51.00mm)
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Overview
The W-03B is a through-hole ultrasonic annunciator manufactured by East Electronics. It features a 51mm diameter housing with PC pin terminations for PCB mounting. The device operates on a rated voltage of 2.83 V RMS and supports resonant frequencies of 20 kHz or 40 kHz. It functions within an operating temperature range of -20°C to +70°C.
Feature Summary
- Ultrasonic sound generation capability
- Through-hole mounting configuration
- PC pin termination style
Applications
- Indoor smoke alarms
- Carbon monoxide alarms
- Fire alarm systems
- Security alarm systems
Procurement Notes
Verify the specific resonant frequency requirement (20 kHz or 40 kHz) as both variants exist for this model. Confirm that the 2.83 V RMS drive level matches your circuit design. Ensure the through-hole form factor fits your PCB layout constraints before ordering.
Selection Notes
Select this component when a high-intensity ultrasonic alert is required for indoor safety applications. The 51mm size provides substantial acoustic output compared to smaller buzzers. Verify compatibility with existing alarm control boards that support the specified voltage and frequency parameters.
Part Context
This part belongs to the East Electronics line of audio products, specifically categorized under alarms, buzzers, and sirens. It is designed for integration into residential and commercial safety devices where reliable ultrasonic signaling is necessary for hazard notification.
Replacement Considerations
No public substitute part numbers are confirmed in available documentation. Direct replacement requires matching the 51mm diameter, 2.83 V RMS rating, and specific resonant frequency to ensure functional equivalence in alarm circuits.
FAQ
What is the physical size of the W-03B?
The W-03B has a diameter of 51 mm (2.008 inches) and a maximum seated height of 18.5 mm (0.728 inches).
Does the W-03B operate at 20 kHz or 40 kHz?
The W-03B is available in versions supporting either 20 kHz or 40 kHz resonant frequencies; the specific variant must be verified from the datasheet or supplier.
