SC648H Equivalent & Substitute Parts

Part Overview

The SC648H 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 as a single-tone indicator with a 4.5kHz frequency output and 68dB sound pressure level at 10V measured at 61cm distance. The part is currently active in production with 846 units in stock.

Finding equivalent and substitute parts for the SC648H becomes necessary when addressing specific compliance requirements, managing supply chain variations, or matching design specifications that require RoHS3 compliance or alternative termination preferences while maintaining identical electrical and mechanical performance characteristics.

Substiute Parts

SC648H

Mallory Sonalert Products Inc.In Stock: 884SC648H Datasheet

Current PartRFQ

SC648HR

Mallory Sonalert Products Inc.In Stock: 820SC648HR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The SC648H has one direct substitute part: SC648HR. Substitution between these parts is valid based on the following criteria:

Electrical Parameters (Must Match):

• Voltage Range: 10 ~ 48V
• Frequency: 4.5kHz
• Sound Pressure Level: 68dB @ 10V, 61cm
• Current Supply: 4 ~ 16mA
• Input Type: DC
• Operating Mode: Single Tone

Mechanical Parameters (Must Match):

• Mounting Type: Panel Mount
• Termination: Screw Terminal, Quick Connect Tab - 0.250" (6.35mm)
• Size / Dimension: 1.692" Dia (42.98mm)
• Height - Seated (Max): 1.330" (33.77mm)
• Port Location: Top

Environmental Parameters (Must Match):

• Operating Temperature: -30°C ~ 65°C

The SC648HR maintains identical electrical, mechanical, and environmental specifications to the SC648H, making it a direct functional equivalent. The primary distinction between these parts is compliance status.

Parameter Comparison

Engineering Selection Recommendations

SC648H Selection: Choose the SC648H when RoHS non-compliant components are acceptable for your application and when existing designs or legacy systems require this specific part number. This part maintains active production status with robust inventory availability.

SC648HR Selection: Choose the SC648HR when ROHS3 compliance is required by design specifications, regulatory requirements, or customer mandates. The SC648HR provides identical electrical and mechanical performance while meeting current RoHS3 standards. Both parts maintain active product status and adequate inventory levels for production deployment.

Both parts are manufactured by the same supplier and share identical functional characteristics, making selection dependent solely on compliance requirements rather than performance considerations.

Frequently Asked Questions (FAQ)

Q: Are SC648H and SC648HR electrically interchangeable? A: Yes. Both parts operate at identical voltage ranges (10 ~ 48V), frequency (4.5kHz), current supply (4 ~ 16mA), and sound pressure level (68dB @ 10V, 61cm). They are direct electrical equivalents.

Q: Can SC648HR be used as a direct replacement for SC648H in existing designs? A: Yes. The SC648HR maintains identical mechanical dimensions (1.692" diameter, 1.330" height), mounting type (panel mount), and termination style (screw terminal with quick connect tab). No PCB or mechanical redesign is required.

Q: What is the primary difference between these two parts? A: The SC648HR is ROHS3 compliant, while the SC648H is RoHS non-compliant. All other specifications remain identical.

Q: Which part should be selected for new designs? A: Selection depends on compliance requirements. If ROHS3 compliance is mandated, use SC648HR. If legacy or non-compliant designs are acceptable, either part may be used based on availability and supply chain considerations.

Q: Are there any temperature or environmental differences between these parts? A: No. Both parts operate across the identical temperature range (-30°C ~ 65°C) and share identical environmental specifications.

Q: What is the current supply requirement for both parts? A: Both SC648H and SC648HR require 4 ~ 16mA supply current across their 10 ~ 48V operating voltage range.