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LM258DG Equivalent & Substitute Parts
Part Overview
The LM258DG is a general-purpose operational amplifier featuring two circuits in an 8-SOIC surface mount package, manufactured by onsemi. This device is classified as obsolete, necessitating identification of equivalent and substitute components for ongoing design requirements and production continuity. The LM258DG operates across a supply voltage range of 3 V to 32 V with a gain bandwidth product of 1 MHz and is suitable for applications requiring dual-channel amplification in compact form factors.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | LM258DG |
| Manufacturer | onsemi |
| Category | Linear, Amplifiers |
| Amplifier Type | General Purpose |
| Number of Circuits | 2 |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount |
| Gain Bandwidth Product | 1 MHz |
| Current - Input Bias | 45 nA |
| Voltage - Input Offset | 2 mV |
| Current - Supply | 800µA (x2 Channels) |
| Current - Output / Channel | 40 mA |
| Voltage - Supply Span (Min) | 3 V |
| Voltage - Supply Span (Max) | 32 V |
| Operating Temperature | -25°C ~ 85°C |
| Product Status | Obsolete |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution of the LM258DG is determined by the following critical parameters: amplifier type (general purpose), number of circuits (2), package type (8-SOIC), mounting method (surface mount), and electrical specifications including gain bandwidth product, input bias current, input offset voltage, supply current, output current capability, and supply voltage range.
Substitute parts are grouped into two categories:
Category 1: Direct Functional Equivalents (Same Amplifier Type) Parts maintaining general-purpose amplifier classification with identical or compatible electrical characteristics and 8-SOIC packaging. These include onsemi LM258DR2G, UMW LM258DR, and STMicroelectronics LM258DT.
Category 2: Alternative Amplifier Type (J-FET Technology) Parts utilizing J-FET input architecture (Analog Devices ADA4062 series) and general-purpose alternatives from Diodes Incorporated (AS358 series). These offer different input bias current characteristics and supply voltage ranges while maintaining dual-circuit, 8-SOIC configuration.
Parameter Comparison
| Parameter | LM258DG (Main) | LM258DR2G | LM258DR | LM258DT | ADA4062-2ARZ | AS358MTR-E1 |
|---|---|---|---|---|---|---|
| Manufacturer | onsemi | onsemi | UMW | STMicroelectronics | Analog Devices Inc. | Diodes Incorporated |
| Amplifier Type | General Purpose | General Purpose | General Purpose | General Purpose | J-FET | General Purpose |
| Number of Circuits | 2 | 2 | 2 | 2 | 2 | 2 |
| Package / Case | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Gain Bandwidth Product | 1 MHz | 1 MHz | Not specified | 1.1 MHz | 1.4 MHz | Not specified |
| Current - Input Bias | 45 nA | 45 nA | 45 nA | 20 nA | 2 pA | 20 nA |
| Voltage - Input Offset | 2 mV | 2 mV | 2 mV | 5 mV | 750 µV | 2 mV |
| Current - Supply | 800µA (x2) | 800µA (x2) | 1mA | 700µA (x2) | 165µA (x2) | 700µA (x2) |
| Current - Output / Channel | 40 mA | 40 mA | 40 mA | 40 mA | 20 mA | 40 mA |
| Voltage - Supply Span (Min) | 3 V | 3 V | Not specified | 3 V | 8 V | 3 V |
| Voltage - Supply Span (Max) | 32 V | 32 V | 32 V | 30 V | 36 V | 36 V |
| Operating Temperature | -25°C ~ 85°C | -25°C ~ 85°C | -25°C ~ 85°C | -40°C ~ 105°C | -40°C ~ 125°C | -40°C ~ 85°C |
| Product Status | Obsolete | Active | Active | Active | Active | Active |
| RoHS Status | Not specified | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
Engineering Selection Recommendations
Primary Substitutes (Highest Compatibility)
LM258DR2G (onsemi) and LM258DT (STMicroelectronics) are the preferred direct substitutes for LM258DG. Both maintain identical amplifier type classification, dual-circuit configuration, and 8-SOIC packaging. LM258DR2G provides exact electrical parameter matching with active product status and ROHS3 compliance. LM258DT offers extended operating temperature range (-40°C to 105°C) and improved input bias current (20 nA) while maintaining supply voltage compatibility.
Secondary Substitutes (Compatible with Parameter Variations)
LM258DR (UMW) functions as a direct substitute with identical electrical specifications and active status. AS358MTR-E1 and AS358MTR-G1 (Diodes Incorporated) provide general-purpose amplification in 8-SOIC packages with ROHS3 compliance and extended temperature range, though with slightly different supply current characteristics (700µA vs. 800µA).
Alternative Technology Substitutes (J-FET Input)
ADA4062-2ARZ, ADA4062-2ARZ-R7, ADA4062-2ARZ-RL, ADA4062-2BRZ, and ADA4062-2BRZ-R7 (Analog Devices Inc.) employ J-FET input architecture, delivering significantly lower input bias current (2 pA) and superior input offset voltage (500–750 µV). These devices require minimum supply voltage of 8 V and deliver reduced output current (20 mA per channel). Selection of J-FET variants is appropriate for applications requiring ultra-low input bias current and higher supply voltage availability.
All substitute parts maintain surface mount configuration, 8-SOIC packaging, and dual-circuit topology. Product status verification confirms active availability for LM258DR2G, LM258DT, LM258DR, and all Diodes Incorporated and Analog Devices variants.
Frequently Asked Questions (FAQ)
Q: Can LM258DR2G directly replace LM258DG without circuit modification?
A: Yes. LM258DR2G maintains identical electrical specifications, package type, and mounting configuration. Both are general-purpose dual operational amplifiers in 8-SOIC surface mount packages with matching supply voltage ranges (3 V to 32 V), gain bandwidth product (1 MHz), and output current capability (40 mA per channel).
Q: What is the primary difference between LM258DT and LM258DG?
A: LM258DT offers improved input bias current (20 nA vs. 45 nA), extended operating temperature range (-40°C to 105°C vs. -25°C to 85°C), and slightly lower supply current (700µA vs. 800µA per dual channels). Electrical compatibility is maintained across all critical parameters. LM258DT carries active product status with ROHS3 compliance.
Q: Are ADA4062 series parts suitable replacements for general-purpose applications?
A: ADA4062 series parts employ J-FET input technology, delivering dramatically lower input bias current (2 pA) and superior input offset voltage characteristics. These devices are suitable for applications requiring ultra-low input bias current. However, they require minimum supply voltage of 8 V (vs. 3 V for LM258DG) and provide reduced output current (20 mA vs. 40 mA per channel). Application requirements must be evaluated before selection.
Q: What packaging options are available for LM258 substitutes?
A: All substitute parts maintain 8-SOIC (0.154", 3.90mm width) surface mount packaging. Packaging variants differ in tape configuration: Cut Tape (CT) & Digi-Reel®, Tape & Reel (TR), or Tube. These variations affect procurement and handling but do not alter electrical or mechanical compatibility.
Q: Is RoHS compliance required for LM258DG substitution?
A: LM258DG product status does not specify RoHS compliance. All active substitute parts (LM258DR2G, LM258DT, LM258DR, AS358 series, and ADA4062 series) carry ROHS3 compliance certification, meeting current environmental and regulatory standards for electronic component manufacturing.
Q: What is the moisture sensitivity level (MSL) for substitute parts?
A: LM258DG carries MSL 1 (Unlimited). LM258DR2G, LM258DT, LM258DR, and ADA4062 series maintain MSL 1. AS358MTR-E1 and AS358MTR-G1 carry MSL 3 (168 Hours), requiring controlled storage and handling conditions during manufacturing processes.
Q: Can AS358 series parts replace LM258DG in all applications?
A: AS358MTR-E1 and AS358MTR-G1 provide general-purpose dual amplification in 8-SOIC packages with compatible supply voltage range (3 V to 36 V) and output current (40 mA per channel). Input bias current (20 nA) and input offset voltage (2 mV) match LM258DG specifications. Extended maximum supply voltage (36 V vs. 32 V) and operating temperature range (-40°C to 85°C) provide additional design flexibility. MSL 3 classification requires moisture control during assembly.
Q: What supply voltage considerations apply when selecting substitutes?
A: LM258DG operates across 3 V to 32 V. LM258DR2G and LM258DT maintain this range. AS358 series extends maximum voltage to 36 V. ADA4062 series requires minimum 8 V supply, limiting applicability in low-voltage designs. Verify application supply voltage requirements before final part selection.
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