CT03E-04S400-1B

Alarms, Buzzers, And Sirens Overview

The CT03E-04S400-1B is a surface-mount electromagnetic buzzer manufactured by Challenge Electronics. It features a compact 3.2 x 3.2 mm footprint with a height of 2.0 mm. The device operates on a rated voltage of 3 V, with a functional range of 2 to 4 V and a supply current of 120 mA. It delivers a sound pressure level of 72 dB at 3 V measured from 10 cm distance. The resonant frequency is 4000 Hz. Designed for external driving circuitry, it utilizes magnetic transducer technology.

Alarms, Buzzers, And Sirens Feature Summary

• Surface mount electromagnetic transducer design
• Externally driven passive operation
• Compact low-profile package

Alarms, Buzzers, And Sirens Applications

• Electronic equipment audio signaling
• Consumer appliance alerts
• Industrial control panel indicators

Alarms, Buzzers, And Sirens Procurement Notes

Verify the specific suffix 'B' against official datasheets to confirm exact electrical tolerances and material specifications. Ensure compatibility with existing PCB solder pad layouts due to the 3.2x3.2mm form factor. Confirm operating temperature ranges meet system requirements, as variations exist between standard and B-series components.

Alarms, Buzzers, And Sirens Selection Notes

Select this component for applications requiring a low-profile, externally driven acoustic signal source. The 72 dB output provides adequate audibility for general purpose alarms. Consider the 120 mA current draw when designing power management circuits. The surface mount package facilitates automated assembly processes.

Alarms, Buzzers, And Sirens Part Context

This part belongs to Challenge Electronics' series of electromagnetic buzzers. It shares the same physical dimensions and core technology as the CT03E-04S400-1 but may differ in specific manufacturing batches or minor electrical characteristics denoted by the suffix. It serves as a direct replacement for similar 3V SMD buzzers in legacy designs.

Alarms, Buzzers, And Sirens Replacement Considerations

The CT03E-04S400-1 is the primary equivalent model. Verify pinout and mounting hole alignment before substitution. Ensure the replacement maintains the 4 kHz resonant frequency for consistent acoustic performance.

Alarms, Buzzers, And Sirens FAQ

What is the driver circuitry type?

It uses an externally driven passive transducer, requiring an external oscillator circuit.

What is the operating voltage range?

The component operates within a voltage range of 2 to 4 volts.