SC628AH Equivalent & Substitute Parts

Part Overview

The SC628AH is an internally driven piezo buzzer manufactured by Mallory Sonalert Products Inc., designed for panel mount applications with screw terminal and quick connect tab connections. This component operates across a 6–28V supply range, producing a 4.5kHz single tone output at 68dB SPL (measured at 6V, 61cm distance) with a current draw of 4–16mA. The part maintains active product status and is available in bulk packaging with 634 units currently in stock.

Identifying equivalent and substitute parts is necessary when the primary component becomes unavailable, when design requirements shift toward improved compliance standards, or when inventory optimization requires sourcing from alternative stock positions.

Substiute Parts

SC628AH

Mallory Sonalert Products Inc.In Stock: 670SC628AH Datasheet

Current PartRFQ

SC628AHR

Mallory Sonalert Products Inc.In Stock: 1074SC628AHR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The SC628AHR qualifies as a direct substitute for the SC628AH based on the following alignment of critical parameters:

Matching Parameters:

• Identical manufacturer (Mallory Sonalert Products Inc.)
• Same series designation (SC)
• Identical piezo technology and internal driver configuration
• Matching voltage range (6–28V)
• Identical frequency output (4.5kHz)
• Matching single-tone operating mode
• Identical current supply specification (4–16mA)
• Identical sound pressure level rating (68dB, measured at 61cm)
• Matching mounting type (Panel Mount)
• Identical termination style (Screw Terminal, Quick Connect Tab – 0.250")
• Identical physical dimensions (1.692" diameter, 1.399" height seated)
• Matching operating temperature range (–30°C to 65°C)
• Identical input type support (AC, DC)

Distinguishing Factor: The SC628AHR differs in RoHS compliance status (ROHS3 Compliant versus RoHS non-compliant) and SPL measurement reference voltage (68dB @ 7.5V versus 68dB @ 6V). These differences do not affect functional interchangeability within the specified voltage operating range.

Parameter Comparison

Engineering Selection Recommendations

SC628AH Selection Criteria: Choose the SC628AH when existing designs or procurement specifications explicitly require the RoHS non-compliant variant or when current inventory of 634 units meets project lead-time requirements.

SC628AHR Selection Criteria: Select the SC628AHR when designs must comply with ROHS3 standards or when higher inventory availability (1044 units) provides supply chain advantages. The ROHS3 compliance status makes this variant suitable for applications subject to environmental and regulatory restrictions on hazardous substances.

Both parts maintain identical functional performance across the specified voltage range (6–28V), frequency output (4.5kHz), and mechanical compatibility (panel mount, identical dimensions, matching termination). The choice between SC628AH and SC628AHR is determined by compliance requirements and inventory availability rather than technical performance differences.

Frequently Asked Questions (FAQ)

Q: Can SC628AHR replace SC628AH in existing designs without modification? A: Yes. Both parts share identical electrical specifications (voltage range, frequency, current draw, SPL rating), mounting type (panel mount), physical dimensions (1.692" diameter, 1.399" height), and termination style (screw terminal with 0.250" quick connect tab). No circuit or mechanical redesign is required.

Q: What is the significance of the different SPL measurement voltages (6V vs. 7.5V)? A: Both parts produce 68dB SPL at their respective reference voltages within the shared 6–28V operating range. The measurement voltage difference reflects manufacturer test conditions and does not affect functional interchangeability across the full voltage specification.

Q: Why is RoHS compliance status different between these parts? A: The SC628AHR incorporates ROHS3-compliant materials and manufacturing processes, while the SC628AH does not. This distinction is relevant only for applications subject to environmental regulations or customer requirements mandating RoHS compliance.

Q: Are there any packaging or inventory considerations? A: Both parts are supplied in bulk packaging. The SC628AHR currently maintains higher inventory (1044 units) compared to SC628AH (634 units), which may influence procurement decisions based on project timelines and supply chain requirements.

Q: Do these parts support both AC and DC input? A: Yes. Both SC628AH and SC628AHR accept AC and DC input across the 6–28V voltage range, providing design flexibility for various power supply configurations.