SC628DJ Equivalent & Substitute Parts

Part Overview

The SC628DJ 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 across a 6–28V DC input range, producing a 1.9kHz tone at 60dB SPL (measured at 6V, 61cm distance) with pulse and slow operating modes. The part maintains active product status and is currently in stock with 913 units available.

Identifying equivalent and substitute parts becomes necessary when addressing supply chain constraints, compliance requirements, or specific application certifications. The SC628DJ is RoHS non-compliant, which may require substitution in applications subject to RoHS3 regulations or when procurement policies mandate compliant components.

Substiute Parts

SC628DJ

Mallory Sonalert Products Inc.In Stock: 993SC628DJ Datasheet

Current PartRFQ

SC628DJR

Mallory Sonalert Products Inc.In Stock: 984SC628DJR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SC628DJ is determined by strict equivalence across the following critical parameters:

• Electrical Specifications: Voltage range (6–28V DC), frequency (1.9kHz), current supply (5–23mA), and sound pressure level (60dB @ 6V, 61cm) must remain identical.
• Mechanical Compatibility: Mounting type (panel mount), termination style (screw terminal with quick connect tab 0.250"), and overall diameter (1.692" / 42.98mm) must match.
• Operating Characteristics: Driver circuitry (internally driven indicator), operating modes (pulse, slow), and duration (0.5–2 PPS) must be preserved.
• Environmental Ratings: Operating temperature range (–30°C to 65°C) must be maintained.

The SC628DJR qualifies as a direct substitute based on complete alignment with all electrical, mechanical, and operational parameters. The primary distinction lies in compliance certification and RoHS status, not functional performance.

Parameter Comparison

Engineering Selection Recommendations

SC628DJ is suitable for applications where RoHS compliance is not mandated and UL certification alone satisfies regulatory requirements. This part remains the baseline reference for electrical and mechanical specifications.

SC628DJR is the preferred substitute when RoHS3 compliance is required or when dual certification (cUL and UL) is specified. The SC628DJR maintains identical electrical performance and mechanical compatibility while providing enhanced compliance status. The maximum seated height increases from 1.330" to 1.399", a 0.069" (1.77mm) difference that must be verified against available panel mounting clearance in the target application.

Both parts share identical product status (active) and current inventory availability, ensuring supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can SC628DJR replace SC628DJ in existing designs? A: Yes. The SC628DJR is electrically and mechanically equivalent. The seated height difference of 0.069" (1.77mm) must be confirmed as acceptable within the mechanical envelope of the application.

Q: What is the primary reason to substitute SC628DJ with SC628DJR? A: RoHS3 compliance. The SC628DJR meets RoHS3 requirements while the SC628DJ does not. If your application or procurement policy mandates RoHS compliance, SC628DJR is the appropriate selection.

Q: Are the electrical specifications identical between both parts? A: Yes. Voltage range (6–28V), frequency (1.9kHz), current supply (5–23mA), sound pressure level (60dB @ 6V, 61cm), and all operating modes are identical.

Q: Do both parts use the same termination style? A: Yes. Both SC628DJ and SC628DJR feature screw terminal and quick connect tab (0.250" / 6.35mm) termination.

Q: What certifications does each part carry? A: SC628DJ carries UL certification. SC628DJR carries both cUL and UL certifications, providing broader geographic and regulatory acceptance.

Q: Is the diameter the same for both parts? A: Yes. Both parts have a diameter of 1.692" (42.98mm), ensuring identical panel cutout requirements.

Q: What is the temperature operating range for both parts? A: Both SC628DJ and SC628DJR operate across –30°C to 65°C.