SC2904NG Equivalent & Substitute Parts

Part Overview

The SC2904NG is a general purpose operational amplifier integrated circuit manufactured by onsemi, housed in an 8-DIP (0.300", 7.62mm) through-hole package. This component is classified as obsolete, indicating discontinued production and limited availability in the market. The SC2904NG serves as a foundational building block in analog signal processing applications requiring general purpose amplification.

Due to its obsolete status, sourcing original SC2904NG units presents supply chain challenges. Equivalent substitute parts with compatible electrical and mechanical characteristics are necessary to maintain design continuity and ensure project feasibility. Substitutes must maintain functional equivalence while accommodating potential package and mounting differences.

Substiute Parts

SC2904NG

onsemiIn Stock: 1123SC2904NG Datasheet

Current PartRFQ

LM2904DR2G

onsemiIn Stock: 505330LM2904DR2G Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SC2904NG is determined by the following critical parameters:

Functional Equivalence: Both the main part and substitute must operate as general purpose operational amplifiers within the Linear, Amplifiers category.

Electrical Compatibility: Substitute parts must support the same supply voltage range and output characteristics required by the original design.

Package Consideration: The SC2904NG uses through-hole 8-DIP packaging. Direct pin-compatible substitutes in identical packaging are preferred. Surface mount alternatives (such as 8-SOIC) require circuit board redesign and are classified as functional substitutes rather than direct replacements.

Regulatory Compliance: All substitute parts must maintain REACH Unaffected status and EAR99 ECCN classification to ensure compliance with the original design specifications.

Product Availability: Substitute parts must have active product status to ensure ongoing supply chain viability.

The LM2904DR2G qualifies as a functional substitute based on shared general purpose amplifier characteristics, compatible electrical parameters, and equivalent regulatory compliance. However, the package transition from 8-DIP to 8-SOIC requires design accommodation.

Parameter Comparison

Engineering Selection Recommendations

Primary Consideration: The SC2904NG is obsolete, making the LM2904DR2G the appropriate functional substitute from onsemi's active product portfolio. Both components share identical manufacturer origin and regulatory compliance status (REACH Unaffected, EAR99).

Package Transition: Selection of LM2904DR2G requires accommodation of the package change from 8-DIP through-hole to 8-SOIC surface mount. This transition necessitates circuit board redesign and assembly process modification. Through-hole mounting applications cannot directly accept surface mount components without mechanical adaptation.

Active Product Status: The LM2904DR2G maintains active product status with substantial inventory availability (505,300 pieces), ensuring long-term supply chain reliability compared to the obsolete SC2904NG (1,067 pieces remaining).

Compliance Alignment: Both parts maintain identical regulatory classifications, supporting seamless integration into designs with existing compliance documentation.

Electrical Parameters: The LM2904DR2G provides documented electrical specifications (supply voltage 3V to 26V, operating temperature -40°C to 85°C, 1 MHz gain bandwidth product) that establish performance baselines for design verification.

Frequently Asked Questions (FAQ)

Q: Can the LM2904DR2G directly replace the SC2904NG in an existing circuit board?

A: Direct replacement is not possible due to package incompatibility. The SC2904NG uses 8-DIP through-hole packaging while the LM2904DR2G uses 8-SOIC surface mount packaging. Circuit board redesign and component footprint modification are required.

Q: What are the key electrical parameters that define substitution compatibility?

A: Substitution compatibility is determined by amplifier type (general purpose), supply voltage range, operating temperature range, gain bandwidth product, input bias current, input offset voltage, and output current capability. The LM2904DR2G provides these specifications; the SC2904NG does not document these parameters in the available data.

Q: Are there through-hole package alternatives to the SC2904NG?

A: The provided substitute list contains only the LM2904DR2G. Additional through-hole alternatives may exist in the broader LM2904 family or from alternative manufacturers, but these are not included in the current substitute specification.

Q: What is the significance of the MSL rating for both parts?

A: Both the SC2904NG and LM2904DR2G carry MSL 1 (Unlimited) classification, indicating unlimited shelf life without moisture sensitivity concerns. This eliminates moisture-related handling restrictions during storage and assembly.

Q: How do the regulatory compliance statuses compare?

A: Both parts maintain identical regulatory status: REACH Unaffected and ECCN EAR99. This ensures that substitution does not introduce compliance complications or require updated regulatory documentation.

Q: What is the significance of the LM2904DR2G's active product status?

A: Active product status indicates ongoing manufacturing and distribution by onsemi. This ensures sustained availability, stable pricing, and continued technical support, contrasting with the SC2904NG's obsolete status which presents supply uncertainty and potential price volatility.