SC628NP Equivalent & Substitute Parts

Part Overview

The SC628NP is an internally driven piezo buzzer manufactured by Mallory Sonalert Products Inc., designed for panel-mounted applications requiring audible indication. This component operates across a 6–28V DC supply range with a fixed 2.9kHz frequency output and 80dB sound pressure level at 6V measured at 61cm. The part features screw terminal and quick connect tab termination suitable for direct integration into control panels and indicator systems. As an active product with established market availability, equivalent alternatives exist to support procurement flexibility and supply chain continuity.

Substiute Parts

SC628NP

Mallory Sonalert Products Inc.In Stock: 878SC628NP Datasheet

Current PartRFQ

SC628NPR

Mallory Sonalert Products Inc.In Stock: 1064SC628NPR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SC628NP is determined by strict equivalence across the following critical parameters:

• Electrical Compatibility: Voltage range (6–28V DC), frequency (2.9kHz), current supply (4–16mA), and sound pressure level (80dB @ 6V, 61cm) must be identical
• Mechanical Compatibility: Mounting type (panel mount), termination style (screw terminal with quick connect tab), and physical diameter (1.692" / 42.98mm) must match
• Operational Characteristics: Driver circuitry (internally driven indicator), operating mode (pulse, fast), and duration (2–10 PPS) must be equivalent
• Environmental Range: Operating temperature range (–30°C to 65°C) must be maintained

The SC628NPR meets all substitution criteria as a direct equivalent within the SC series, with identical electrical and mechanical specifications. Differences in height and compliance status do not affect functional interchangeability in standard applications.

Parameter Comparison

Engineering Selection Recommendations

Both SC628NP and SC628NPR are active products with identical electrical and mechanical specifications, ensuring direct functional interchangeability in panel-mounted buzzer applications. Selection between these parts should be based on regulatory and compliance requirements:

The SC628NPR offers ROHS3 compliance, making it the preferred choice for applications subject to RoHS directives or customer specifications requiring compliant components. The SC628NP remains suitable for applications without RoHS compliance mandates.

The marginal height difference (1.330" versus 1.399") does not affect standard panel cutout compatibility and should not influence substitution decisions for typical mounting scenarios.

Frequently Asked Questions (FAQ)

Q: Can SC628NPR be used as a direct replacement for SC628NP?

A: Yes. Both parts are electrically and mechanically equivalent with identical voltage range (6–28V), frequency (2.9kHz), sound pressure level (80dB @ 6V, 61cm), current supply (4–16mA), mounting type (panel mount), and termination style (screw terminal with quick connect tab – 0.250"). The SC628NPR is a direct substitute.

Q: What is the significance of the height difference between these parts?

A: The SC628NP has a maximum seated height of 1.330" (33.77mm), while the SC628NPR measures 1.399" (35.54mm). This 0.069" (1.77mm) difference does not affect standard panel mounting applications and does not impact functional interchangeability.

Q: Does RoHS compliance affect electrical performance?

A: No. RoHS compliance status reflects manufacturing process and material composition standards, not electrical or acoustic performance. Both parts deliver identical 80dB sound pressure level and operate across the same 6–28V voltage range.

Q: Are these parts interchangeable in existing designs?

A: Yes. Designs currently using SC628NP can be updated to SC628NPR without circuit modifications. The identical electrical specifications, frequency output, and termination configuration ensure drop-in compatibility.

Q: What applications require these piezo buzzers?

A: These internally driven piezo indicators are used in control panels, alarm systems, and equipment requiring audible notification across industrial and commercial operating temperature ranges (–30°C to 65°C).