SC628ND Equivalent & Substitute Parts

Part Overview

The SC628ND is an internally driven piezo buzzer manufactured by Mallory Sonalert Products Inc., designed for panel mount applications with screw terminal and quick connect tab termination. This component operates as a single-tone indicator with a 2kHz frequency output and is rated for DC voltage input between 6V and 28V. The part is currently active in production with 790 units in stock. Finding equivalent or substitute parts may be necessary due to inventory constraints, compliance requirements, or application-specific performance needs such as increased sound pressure level or current specifications.

Substiute Parts

SC628ND

Mallory Sonalert Products Inc.In Stock: 844SC628ND Datasheet

Current PartRFQ

SC628NDR

Mallory Sonalert Products Inc.In Stock: 943SC628NDR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The SC628NDR qualifies as a direct substitute for the SC628ND based on the following critical parameters that remain constant across both parts:

• Manufacturer: Mallory Sonalert Products Inc. (same product family)
• Series: SC (same series designation)
• Technology: Piezo (identical technology platform)
• Driver Circuitry: Indicator, Internally Driven (same internal architecture)
• Input Type: DC (identical electrical input requirement)
• Voltage Range: 6 ~ 28V (identical operating voltage)
• Frequency: 2kHz (identical output frequency)
• Operating Mode: Single Tone (identical functional mode)
• Mounting Type: Panel Mount (identical mechanical mounting)
• Termination: Screw Terminal, Quick Connect Tab - 0.250" (6.35mm) (identical connection interface)
• Size / Dimension: 1.692" Dia (42.98mm) (identical physical footprint)
• Height - Seated (Max): 1.946" (49.43mm) (identical height clearance)
• Operating Temperature: -30°C ~ 65°C (identical temperature range)

The SC628NDR represents an enhanced variant within the same product line, with improvements in sound pressure level and current supply specifications while maintaining full mechanical and electrical compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both the SC628ND and SC628NDR are active products from Mallory Sonalert Products Inc. and maintain identical mechanical and electrical interfaces. Selection between these parts should be based on the following criteria:

SC628ND is appropriate for applications where the original specification of 75dB SPL at 6V and 15mA maximum current supply is sufficient and RoHS non-compliance is acceptable for the application context.

SC628NDR is the preferred selection for new designs or applications requiring RoHS3 compliance. The SC628NDR provides enhanced acoustic output at 83dB SPL and supports increased current supply up to 20mA, offering greater design margin and regulatory alignment without any mechanical or electrical interface changes.

Both parts operate identically within the 6V to 28V DC input range, maintain the same 2kHz single-tone output, and share identical panel mount dimensions and termination specifications. The choice between them depends on compliance requirements and acoustic performance needs rather than compatibility constraints.

Frequently Asked Questions (FAQ)

Q: Can SC628NDR be used as a direct replacement for SC628ND in existing designs?

A: Yes. The SC628NDR is mechanically and electrically compatible with the SC628ND. All mounting dimensions, termination interfaces, voltage range, frequency, and operating temperature specifications are identical. The SC628NDR can be substituted without circuit board or mechanical redesign.

Q: What are the key differences between SC628ND and SC628NDR?

A: The SC628NDR provides two enhancements: increased sound pressure level (83dB versus 75dB at 6V, 61cm) and higher maximum current supply (20mA versus 15mA). Additionally, the SC628NDR is RoHS3 compliant while the SC628ND is RoHS non-compliant.

Q: Are there any electrical interface differences between these parts?

A: No. Both parts use identical DC input type, operate across the same 6V to 28V voltage range, and feature the same screw terminal and quick connect tab termination at 0.250" (6.35mm). No circuit modifications are required for substitution.

Q: Do these parts have the same physical footprint?

A: Yes. Both the SC628ND and SC628NDR have identical panel mount dimensions of 1.692" diameter (42.98mm) and maximum seated height of 1.946" (49.43mm). No mechanical redesign is necessary when substituting between these parts.

Q: Which part should be selected for new product designs?

A: The SC628NDR is recommended for new designs due to its RoHS3 compliance status and enhanced acoustic performance. Both parts are active products with current manufacturing status and inventory availability.

Q: Is the increased current supply of SC628NDR a concern for existing power supply designs?

A: The SC628NDR maximum current of 20mA is only 5mA higher than the SC628ND maximum of 15mA. For applications already designed to supply 15mA, the SC628NDR will operate within the same current envelope. If power supply capacity is limited to exactly 15mA, the SC628NDR provides additional design margin without exceeding typical power supply ratings.