BD3452KS Equivalent & Substitute Parts

Part Overview

The BD3452KS is an 8-channel audio signal processor manufactured by Rohm Semiconductor, housed in a 100-SQFP (14x20) surface mount package. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and production continuity. The part operates within a supply voltage range of 6.5V to 7.3V and is designed for consumer audio applications requiring multi-channel signal processing capabilities.

Substiute Parts

BD3452KS

Rohm SemiconductorIn Stock: 1333BD3452KS Datasheet

Current PartRFQ

BD34704KS2

Rohm SemiconductorIn Stock: 1340BD34704KS2 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

The BD34704KS2 qualifies as a substitute for the BD3452KS based on the following alignment of critical parameters:

• Manufacturer: Both parts are manufactured by Rohm Semiconductor, ensuring design consistency and technical support continuity
• Function: Both are 8-channel audio signal processors designed for consumer audio applications
• Mounting Type: Both utilize surface mount technology
• RoHS & Compliance: Both maintain ROHS3 compliance and identical REACH and ECCN classifications
• Moisture Sensitivity: Both share MSL 3 rating (168 Hours)

The BD34704KS2 operates at an extended supply voltage range (±6.5V ~ 7.5V) and broader operating temperature range (-40°C ~ 85°C), providing enhanced environmental tolerance. The package transition from 100-SQFP to 80-SQFP represents a footprint change that requires PCB layout modification but maintains functional compatibility for 8-channel audio signal processing applications.

Parameter Comparison

Engineering Selection Recommendations

The BD34704KS2 is suitable as a substitute for the BD3452KS in applications where the following conditions are met:

• PCB layout can accommodate the 80-SQFP package footprint, which differs from the original 100-SQFP configuration
• System power supply design supports the ±6.5V ~ 7.5V range
• Operating environment falls within the -40°C ~ 85°C temperature specification
• Design timeline permits PCB redesign and qualification activities

The BD34704KS2 maintains identical functional classification, channel count, and regulatory compliance status. The extended operating temperature range and supply voltage tolerance of the substitute part provide additional design margin. However, the product status of "Last Time Buy" indicates limited future availability; procurement planning should account for this constraint.

Frequently Asked Questions (FAQ)

Q: Can the BD34704KS2 be used as a direct pin-for-pin replacement for the BD3452KS?

A: No. The BD3452KS uses a 100-SQFP package while the BD34704KS2 uses an 80-SQFP package. These have different pin counts and physical dimensions, requiring PCB layout modification. Pin-to-pin compatibility cannot be assumed without detailed datasheet review.

Q: What is the primary reason for substitution?

A: The BD3452KS is classified as obsolete. The BD34704KS2, while in "Last Time Buy" status, provides continued access to equivalent 8-channel audio signal processing functionality from the same manufacturer.

Q: Are there compliance or regulatory differences between these parts?

A: No. Both parts maintain identical RoHS3 compliance, REACH status, and MSL ratings. Regulatory and environmental compliance requirements are equivalent.

Q: Does the BD34704KS2 offer any performance advantages?

A: The BD34704KS2 provides an extended operating temperature range (-40°C ~ 85°C versus -20°C ~ 75°C) and broader supply voltage tolerance (±6.5V ~ 7.5V versus 6.5V ~ 7.3V). These represent enhanced environmental specifications rather than functional performance improvements.

Q: What packaging considerations apply to the BD34704KS2?

A: The substitute part is supplied in Tray packaging. The 80-SQFP package is smaller than the original 100-SQFP, reducing board space requirements but necessitating PCB redesign and potential assembly process adjustments.

Q: Is the BD34704KS2 currently available?

A: The BD34704KS2 is classified as "Last Time Buy," indicating limited future availability. Procurement should prioritize ordering within the manufacturer's specified Last Time Buy window to ensure supply continuity.