LM358MX Equivalent & Substitute Parts

Part Overview

The LM358MX is a general-purpose operational amplifier featuring two independent circuits in an 8-SOIC surface mount package. Manufactured by onsemi, this device is classified as obsolete and no longer recommended for new designs. The LM358MX operates across a supply voltage range of 3V to 32V with an operating temperature range of 0°C to 70°C, making it suitable for legacy applications and maintenance scenarios. Due to its obsolete status, identifying equivalent and substitute parts is essential for design continuity, production support, and system reliability in existing installations.

Key Parameters

Parameter	Value	Unit
Amplifier Type	General Purpose	—
Number of Circuits	2	—
Current - Input Bias	45	nA
Voltage - Input Offset	2	mV
Current - Supply (x2 Channels)	800	µA
Current - Output / Channel	30	mA
Voltage - Supply Span (Min)	3	V
Voltage - Supply Span (Max)	32	V
Operating Temperature	0 to 70	°C
Package / Case	8-SOIC (0.154", 3.90mm Width)	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the LM358MX is determined by strict alignment of electrical and mechanical parameters within the general-purpose operational amplifier category. The following criteria establish valid substitution relationships:

Primary Substitution Criteria:

Package compatibility: 8-SOIC surface mount form factor
Number of circuits: 2 independent amplifier circuits
Supply voltage range: Minimum 3V, maximum 32V or greater
Input bias current: 45 nA nominal
Input offset voltage: 2 mV or lower
Output current per channel: 30 mA or greater
Supply current: 800 µA or lower per channel pair
Operating temperature range: Must encompass or exceed 0°C to 70°C
Compliance: ROHS3 compliant, MSL 1

Substitution Groups:

Group 1 - Direct Functional Equivalents (Active Status): Parts meeting all primary criteria with active product status and identical or superior electrical performance within the specified operating range.

Group 2 - Extended Temperature Range Variants (Active Status): Parts meeting all primary criteria with extended operating temperature ranges (-40°C to 125°C or -40°C to 85°C) and active product status, suitable for applications requiring broader thermal operation.

Group 3 - Enhanced Performance Variants (Active Status): Parts exceeding primary criteria with higher gain-bandwidth products, improved slew rates, or lower input offset voltages, maintaining package and supply voltage compatibility.

Group 4 - Legacy Alternatives (Not For New Designs): Parts with equivalent or superior electrical specifications but designated as not for new designs, applicable only for direct replacement in existing systems.

Parameter Comparison

Part Number	Manufacturer	Product Status	Input Bias (nA)	Input Offset (mV)	Supply Current (µA)	Output Current (mA)	Supply Min (V)	Supply Max (V)	Temp Range (°C)	Package
LM358MX	onsemi	Obsolete	45	2	800	30	3	32	0 to 70	8-SOIC
LM258DR2G	onsemi	Active	45	2	800	40	3	32	-25 to 85	8-SOIC
LM2904DR2G	onsemi	Active	45	2	800	40	3	26	-40 to 85	8-SOIC
LM2904VDR2G	onsemi	Active	45	7	1500	40	3	32	-40 to 125	8-SOIC
LM358ADR2G	onsemi	Active	45	2	800	40	3	32	0 to 70	8-SOIC
MC34072ADR2G	onsemi	Active	100	0.5	1900	30	3	44	0 to 70	8-SOIC
MC34072DR2G	onsemi	Active	100	1	1900	30	3	44	0 to 70	8-SOIC
MC34072VDR2G	onsemi	Active	100	1	1900	30	3	44	-40 to 125	8-SOIC
NCV2904DR2G	onsemi	Active	45	7	1500	40	3	32	-40 to 125	8-SOIC
LM358DR	Rohm Semiconductor	Not For New Designs	20	1	600	40	3	32	-40 to 85	8-SOIC

Engineering Selection Recommendations

For Direct Replacement in Existing Systems (Identical Operating Conditions):

LM358ADR2G is the primary substitute for LM358MX. Both parts share identical electrical specifications (45 nA input bias current, 2 mV input offset voltage, 800 µA supply current, 30 mA output current per channel) and operate across the same supply voltage range (3V to 32V). LM358ADR2G maintains the same 0°C to 70°C operating temperature range and is packaged in 8-SOIC. This part carries active product status and ROHS3 compliance, making it suitable for immediate substitution in legacy applications.

For Extended Temperature Operation:

LM2904VDR2G and NCV2904DR2G both extend the operating temperature range to -40°C to 125°C while maintaining 3V to 32V supply voltage compatibility and 8-SOIC packaging. Both parts are active products with ROHS3 compliance. LM2904VDR2G exhibits higher input offset voltage (7 mV versus 2 mV) and increased supply current (1.5 mA versus 800 µA), while NCV2904DR2G shares these same electrical characteristics. These parts are appropriate when thermal performance beyond the original 0°C to 70°C range is required.

For Enhanced Precision Applications:

MC34072ADR2G and MC34072DR2G offer superior input offset voltage (0.5 mV and 1 mV respectively) and extended supply voltage range (3V to 44V) compared to LM358MX. Both maintain 8-SOIC packaging and active product status. MC34072VDR2G provides the same precision specifications with extended temperature range (-40°C to 125°C). These variants are suitable when lower offset voltage and higher supply voltage capability are beneficial to system design.

For Legacy System Maintenance:

LM358DR from Rohm Semiconductor is designated as not for new designs but provides equivalent functionality with superior input bias current (20 nA versus 45 nA) and lower supply current (600 µA versus 800 µA). This part is applicable only for direct replacement in existing installations where design changes are not feasible.

Compliance Verification:

All recommended substitute parts maintain ROHS3 compliance and MSL 1 (unlimited moisture sensitivity level), ensuring compatibility with current manufacturing and environmental standards. All parts are packaged in 8-SOIC form factor with surface mount mounting type, preserving PCB layout compatibility.

Frequently Asked Questions (FAQ)

Q: Can LM358ADR2G directly replace LM358MX without circuit modification?

A: Yes. LM358ADR2G shares identical electrical specifications with LM358MX across all critical parameters: 45 nA input bias current, 2 mV input offset voltage, 800 µA supply current per channel pair, 30 mA output current per channel, and 3V to 32V supply voltage range. Both operate within 0°C to 70°C. The 8-SOIC package is identical. No circuit modification is required.

Q: What is the difference between LM2904VDR2G and LM358ADR2G?

A: LM2904VDR2G extends the operating temperature range to -40°C to 125°C compared to LM358ADR2G's 0°C to 70°C range. LM2904VDR2G exhibits higher input offset voltage (7 mV versus 2 mV) and increased supply current (1.5 mA versus 800 µA per channel pair). Both maintain 3V to 32V supply voltage compatibility and 8-SOIC packaging. Selection depends on whether extended thermal operation is required.

Q: Why do MC34072 variants have higher supply current than LM358MX?

A: MC34072 series parts are designed for enhanced performance with higher gain-bandwidth product (4.5 MHz versus unspecified for LM358MX) and improved slew rate (13 V/µs). These performance enhancements result in higher supply current consumption (1.9 mA versus 800 µA per channel pair). The trade-off between power consumption and performance characteristics must be evaluated for specific applications.

Q: Is LM358DR from Rohm Semiconductor suitable for new designs?

A: No. LM358DR is designated as not for new designs. This part is applicable only for direct replacement in existing systems where design changes are not feasible. For new designs, active-status alternatives such as LM358ADR2G or LM258DR2G are appropriate.

Q: Can I use NCV2904DR2G in place of LM358MX?

A: NCV2904DR2G is compatible from a package and supply voltage perspective (8-SOIC, 3V to 32V). However, it exhibits higher input offset voltage (7 mV versus 2 mV) and increased supply current (1.5 mA versus 800 µA per channel pair). It extends the operating temperature range to -40°C to 125°C. Use this part only if the application tolerates higher offset voltage and increased power consumption, or if extended temperature operation is required.

Q: What is the significance of MSL 1 (Unlimited) rating?

A: MSL 1 indicates unlimited moisture sensitivity level, meaning the component does not require special moisture control during storage, handling, or assembly. This simplifies logistics and manufacturing processes compared to higher MSL ratings that require controlled humidity environments.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed in this reference maintain ROHS3 compliance, ensuring compatibility with current environmental regulations and manufacturing standards. This compliance is consistent across all active and legacy alternatives.

Q: What packaging options are available for LM358MX substitutes?

A: All substitute parts in this reference are packaged in 8-SOIC (0.154", 3.90mm width) surface mount form factor, identical to LM358MX. Packaging compatibility is maintained across all alternatives, preserving PCB layout and assembly compatibility.

Q: How do I determine which substitute is best for my application?

A: Selection criteria depend on three factors: (1) operating temperature requirements—use LM358ADR2G for 0°C to 70°C, or LM2904VDR2G/NCV2904DR2G for -40°C to 125°C; (2) precision requirements—use MC34072 variants for lower input offset voltage; (3) supply voltage range—use MC34072 variants for 3V to 44V, or standard variants for 3V to 32V. All parts maintain 8-SOIC packaging and ROHS3 compliance.

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