SC324NG Equivalent & Substitute Parts

Part Overview

The SC324NG is a general-purpose operational amplifier integrated circuit manufactured by onsemi, housed in a 14-pin DIP package for through-hole mounting applications. This component functions as a linear amplifier suitable for general-purpose signal conditioning and amplification tasks. The SC324NG is classified as an obsolete product, necessitating identification of active equivalent alternatives for new designs and ongoing production requirements. Substitute parts must maintain functional compatibility while accommodating modern packaging and manufacturing standards.

Substiute Parts

SC324NG

onsemiIn Stock: 1061SC324NG Datasheet

Current PartRFQ

LM324DR2G

onsemiIn Stock: 105392LM324DR2G Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SC324NG is determined by the following critical parameters:

Functional Equivalence: The substitute part must be classified as a general-purpose operational amplifier within the Linear, Amplifiers category.

Electrical Compatibility: The substitute must operate within compatible voltage supply ranges and maintain equivalent amplification characteristics for general-purpose applications.

Regulatory Compliance: All substitute parts must maintain REACH Unaffected status and EAR99 ECCN classification to ensure compliance with existing supply chain and export requirements.

Moisture Sensitivity: Substitute parts must maintain MSL 1 (Unlimited) rating to ensure compatibility with standard handling and storage procedures.

The primary substitute identified is the LM324DR2G, which shares the same base product number (LM324 family) and maintains all required compliance certifications. While the LM324DR2G utilizes surface-mount 14-SOIC packaging rather than through-hole DIP packaging, it provides functional equivalence for applications where package conversion is feasible.

Parameter Comparison

Engineering Selection Recommendations

The LM324DR2G serves as the primary active substitute for the obsolete SC324NG. Selection of this substitute is based on the following engineering criteria:

Product Status Alignment: The LM324DR2G maintains active product status with onsemi, ensuring continued availability and manufacturing support. This addresses the obsolescence of the SC324NG.

Regulatory Compliance: Both parts maintain identical REACH Unaffected status and EAR99 ECCN classification, ensuring no changes to supply chain compliance requirements or export restrictions.

Moisture Sensitivity Consistency: The MSL 1 (Unlimited) rating is maintained across both parts, preserving existing handling and storage protocols.

Packaging Consideration: The transition from 14-DIP through-hole to 14-SOIC surface-mount packaging requires circuit board redesign. This substitution is appropriate for new product development or board revision cycles where surface-mount technology is implemented.

Functional Equivalence: Both parts are classified as general-purpose operational amplifiers within the onsemi product family, maintaining functional compatibility for typical amplifier applications.

Frequently Asked Questions (FAQ)

Q: Can the LM324DR2G be used as a direct pin-for-pin replacement for the SC324NG?

A: No. While both parts are 14-pin operational amplifiers, the SC324NG uses through-hole DIP packaging and the LM324DR2G uses surface-mount SOIC packaging. Pin-for-pin replacement requires different circuit board layouts and soldering processes. However, the electrical pinout and functional characteristics are compatible.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution eligibility is determined by: amplifier type classification (general purpose), manufacturer compliance certifications (REACH Unaffected, EAR99), moisture sensitivity level (MSL 1), and functional equivalence within the operational amplifier category. Package type and mounting method are secondary considerations that depend on circuit board design flexibility.

Q: Why is the SC324NG obsolete?

A: The SC324NG is classified as obsolete by onsemi. The LM324 family, including the LM324DR2G, represents the current active product line for general-purpose operational amplifiers from this manufacturer.

Q: Are there supply chain advantages to using the LM324DR2G?

A: Yes. The LM324DR2G maintains active product status with significantly higher inventory availability (105,300 pieces in stock compared to 1,051 pieces for SC324NG). Active product status ensures continued manufacturing support and predictable long-term availability.

Q: What is the operating temperature range for the LM324DR2G?

A: The LM324DR2G operates across 0°C to 70°C. Specific operating temperature requirements for the SC324NG were not provided in the original specifications.

Q: Are there electrical performance differences between these parts?

A: The LM324DR2G provides specified electrical parameters including 1 MHz gain bandwidth product, 90 nA input bias current, 2 mV input offset voltage, and 40 mA output current per channel. These specifications define the performance envelope for general-purpose amplification applications. Equivalent specifications for the SC324NG were not provided.

Q: What supply voltage range does the LM324DR2G support?

A: The LM324DR2G operates with supply voltages ranging from 3 V minimum to 32 V maximum, providing flexibility for single and dual supply configurations in general-purpose amplifier applications.