SC250KR

Overview

The SC250KR is a piezoelectric buzzer from the Mallory Sonalert SC series, designed for panel mounting. It operates on AC or DC input within a voltage range of 60 to 250V and draws a supply current between 5 and 18mA. The device emits a short pulse tone at a frequency of 2.9kHz with a sound pressure level of 68dB measured at 60V and 61cm. It features internal drive circuitry and utilizes screw terminals or quick-connect tabs (0.250 inches) for termination. The unit has a diameter of 42.85mm and functions within an operating temperature range of -30°C to 65°C.

Feature Summary

• Integrates internal drive circuitry for direct connection to power sources without external oscillators.
• Supports both AC and DC input voltages across a wide operational range.
• Emits a distinct short pulse acoustic signal for clear auditory indication.
• Constructed with durable housing suitable for industrial environments.

Applications

• Industrial machinery status indicators
• Control panel alarm systems
• Automotive equipment monitoring
• HVAC system fault alerts

Procurement Notes

Verify the specific suffix against official Mallory Sonalert documentation to confirm electrical characteristics such as voltage rating and tone pattern. Ensure the termination style matches the available terminal types on the target equipment. Confirm RoHS compliance requirements if applicable to the assembly process. Cross-reference the part number with the latest product guide to avoid discrepancies in specifications.

Selection Notes

Select this component when a high-voltage compatible, internally driven piezoelectric buzzer is required. The SC250KR is appropriate for applications needing a 2.9kHz short pulse alert. Consider the 60-250V input range and 68dB output level relative to ambient noise. Verify that the panel mount dimensions and terminal type fit the mechanical design constraints.

Part Context

This component belongs to the SC series of industrial audio indicators manufactured by Mallory Sonalert Products Inc. The series is characterized by robust construction and reliable performance in demanding environments. These devices are widely used in sectors requiring clear visual and auditory feedback for operational status.

FAQ

What is the operating mode of the SC250KR?

The SC250KR operates in a short pulse mode, emitting intermittent tones rather than a continuous sound.

Does the SC250KR require an external driver circuit?

No, the SC250KR includes internal drive circuitry, allowing it to be connected directly to the specified AC or DC voltage source.