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Product Detailed Parameters
- Description：BUZZER MAGNETIC 3V 9MM TH
- Series：AT
- Mfr：PUI Audio, Inc.
- Package：Box
- Driver Circuitry：Transducer, Externally Driven
- Input Type：Zero-Peak Signal
- Frequency：2.7kHz
- Technology：Electromechanical/Magnetic
- Operating Mode：-
- Duration：-
- Sound Pressure Level (SPL)：85dB @ 3V, 10cm
- Current - Supply：80mA
- Port Location：Side
- Operating Temperature：-40°C ~ 85°C
- Approval Agency：-
- Ratings：-
- Ingress Protection：-
- Mounting Type：Through Hole
- Termination：PC Pins
- Height - Seated (Max)：0.169" (4.30mm)
- Voltage - Rated：3 V
- Voltage Range：2 ~ 5V
- Size / Dimension：0.354" Dia (9.00mm)
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Overview
The PUI Audio AT-1127-ST-HT-R is a piezoelectric buzzer featuring a through-hole mounting configuration. It operates at a resonant frequency of 2.7 kHz with a sound pressure level of 85 dB measured at a distance of 10 cm. The device requires a DC drive voltage of 3.0 V and draws a current of 25 mA during operation. It is designed for high-temperature environments, supporting a storage temperature range from -40°C to +105°C and an operating temperature range from -20°C to +85°C. The component utilizes a rectangular housing with specific terminal dimensions suitable for standard PCB assembly processes.
Feature Summary
- High-temperature resistance capability for demanding thermal environments
- Piezoelectric actuation mechanism for reliable acoustic output
- Through-hole termination style for secure mechanical attachment
Applications
- Industrial control panels requiring high-temperature tolerance
- Appliance signaling systems with elevated ambient heat
- Automotive interior warning devices
Procurement Notes
Verify the exact suffix codes against the manufacturer's latest documentation to ensure compatibility with specific environmental ratings and electrical characteristics. Confirm that the through-hole pin spacing matches your printed circuit board layout before finalizing procurement orders to prevent assembly errors.
Selection Notes
Select this component when a piezoelectric buzzer with high-temperature stability is required. Ensure the driving circuit can supply the specified 3.0 V DC and 25 mA current. Verify that the 2.7 kHz resonant frequency aligns with the desired audible alert profile for the target application environment.
Part Context
This model belongs to PUI Audio's series of piezoelectric buzzers designed for robust performance in various electronic assemblies. The AT-1127 designation indicates the form factor and acoustic specifications, while the suffixes define the specific electrical and environmental tolerances. This particular variant emphasizes durability under thermal stress compared to standard commercial grade alternatives.
Replacement Considerations
Consult official substitution guides for equivalent piezoelectric buzzers with matching 2.7 kHz resonance and 85 dB SPL. Ensure replacement parts support similar through-hole mounting and high-temperature operational ranges to maintain system integrity.
