SC648AJ Equivalent & Substitute Parts

Part Overview

The SC648AJ 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 voltage range of 10–48V with a frequency of 2.9kHz and generates a sound pressure level of 68dB at 10V measured at 61cm. The part is currently active in production and maintains an inventory of 1123 pieces in stock.

Finding equivalent and substitute parts is necessary to ensure design flexibility, manage supply chain continuity, and accommodate varying compliance requirements across different manufacturing standards and regional specifications.

Substiute Parts

SC648AJ

Mallory Sonalert Products Inc.In Stock: 1159SC648AJ Datasheet

Current PartRFQ

SC648AJR

Mallory Sonalert Products Inc.In Stock: 1025SC648AJR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SC648AJ is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part SC648AJR maintains identical specifications for voltage range (10–48V), frequency (2.9kHz), sound pressure level (68dB @ 10V, 61cm), current supply (6–21mA), operating mode (Pulse, Slow), duration (0.5–2.5 PPS), mounting type (Panel Mount), physical dimensions (1.692" Dia / 42.98mm), seated height (1.399" / 35.54mm), operating temperature range (–30°C to 65°C), termination style (Screw Terminal, Quick Connect Tab – 0.250" / 6.35mm), driver circuitry (Indicator, Internally Driven), input type (AC, DC), and technology (Piezo).

The key parameters that determine substitution eligibility are: voltage range, frequency, SPL output, current consumption, physical dimensions, mounting configuration, termination type, and operating temperature range. All of these parameters are identical between the main part and its substitute.

Parameter Comparison

Engineering Selection Recommendations

Both SC648AJ and SC648AJR are active production parts from Mallory Sonalert Products Inc. with identical electrical and mechanical specifications. The SC648AJR provides enhanced compliance status with ROHS3 certification and dual approval agencies (cUL and UL), compared to the SC648AJ which carries cUL approval only and is RoHS non-compliant. Selection between these parts should be based on regulatory and compliance requirements specific to the end application. The SC648AJ remains suitable for applications where RoHS3 compliance is not mandated. The SC648AJR is the appropriate choice for designs requiring enhanced environmental compliance and broader certification coverage.

Frequently Asked Questions (FAQ)

Q: Can SC648AJR be used as a direct replacement for SC648AJ?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters including voltage range, frequency, SPL output, current consumption, physical dimensions, mounting type, and termination configuration. The primary difference is compliance certification status.

Q: What is the difference between SC648AJ and SC648AJR?

A: The SC648AJR includes ROHS3 compliance certification and dual approval agencies (cUL and UL), whereas the SC648AJ is RoHS non-compliant with cUL approval only. All functional and physical specifications are identical.

Q: Are the physical dimensions identical between SC648AJ and SC648AJR?

A: Yes. Both parts have identical dimensions of 1.692" diameter (42.98mm) and a maximum seated height of 1.399" (35.54mm), with identical panel mount configuration and termination style.

Q: Which part should be selected for new designs?

A: Selection depends on compliance requirements. For applications requiring RoHS3 compliance and broader certification coverage, SC648AJR is the appropriate choice. For applications without these requirements, SC648AJ remains a valid option.

Q: Are the electrical specifications identical?

A: Yes. Both parts operate across 10–48V, consume 6–21mA, generate 68dB SPL at 10V measured at 61cm, operate at 2.9kHz frequency, and support both AC and DC input with Pulse and Slow operating modes at 0.5–2.5 PPS duration.