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LM358AMX Equivalent & Substitute Parts
Part Overview
The LM358AMX is a general-purpose operational amplifier integrated circuit manufactured by onsemi, configured as a dual-channel amplifier in an 8-SOIC surface mount package. This device is classified as obsolete, though it remains functionally equivalent to several active production alternatives. The LM358AMX 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 general-purpose analog signal processing applications.
Due to its obsolete status, locating new original inventory of the LM358AMX presents supply chain challenges. Active equivalent and substitute parts are available from multiple manufacturers, offering identical or enhanced electrical characteristics while maintaining package compatibility and functional interchangeability for most applications.
Substiute Parts
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 | 1.5 | mA |
| Current - Output / Channel | 40 | mA |
| Voltage - Supply Span (Min) | 3 | V |
| Voltage - Supply Span (Max) | 32 | V |
| Operating Temperature | 0 to 70 | °C |
| Mounting Type | Surface Mount | — |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | — |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | — |
| REACH Status | REACH Unaffected | — |
| ECCN | EAR99 | — |
Substitute Part Grouping Explanation
Substitution of the LM358AMX is determined by strict alignment of electrical and mechanical parameters. The primary substitution criteria are:
Mandatory Matching Parameters:
- Package type: 8-SOIC (0.154", 3.90mm Width)
- Number of circuits: 2
- Amplifier type: General Purpose
- Current - Input Bias: 45 nA
- Voltage - Input Offset: 2 mV (or within acceptable tolerance)
- Current - Output / Channel: 40 mA
- Voltage - Supply Span (Min): 3 V
- Voltage - Supply Span (Max): 32 V or greater
- Mounting type: Surface Mount
Substitution Categories:
Category 1: Direct Functional Equivalents (Identical Operating Temperature) Parts that maintain the 0°C to 70°C operating temperature range of the LM358AMX while meeting all electrical specifications. These include LM358DR2G and LM358AM/NOPB.
Category 2: Extended Temperature Range Equivalents Parts that exceed the original operating temperature specification, providing enhanced performance across wider temperature ranges. These include LM258DR2G, LM2904DR2G, LM2904VDR2G, and NCV2904DR2G.
Category 3: Enhanced Performance Alternatives Parts that maintain core electrical compatibility while offering improved specifications such as higher slew rates, increased gain-bandwidth products, or lower input offset voltages. These include MC34072ADR2G, MC34072DR2G, and MC34072VDR2G.
Category 4: Cross-Manufacturer Equivalents Parts from manufacturers other than onsemi that provide functional equivalence. These include LM358ADR (UMW) and LM358AM/NOPB (Texas Instruments).
Parameter Comparison
| Part Number | Manufacturer | Product Status | Input Bias (nA) | Input Offset (mV) | Supply Current (mA) | Output Current (mA) | Supply Min (V) | Supply Max (V) | Temp Range (°C) | Package | RoHS Status |
|---|---|---|---|---|---|---|---|---|---|---|---|
| LM358AMX | onsemi | Obsolete | 45 | 2 | 1.5 | 40 | 3 | 32 | 0 to 70 | 8-SOIC | — |
| LM358DR2G | onsemi | Active | 45 | 2 | 0.8 | 40 | 3 | 32 | 0 to 70 | 8-SOIC | ROHS3 Compliant |
| LM258DR2G | onsemi | Active | 45 | 2 | 0.8 | 40 | 3 | 32 | -25 to 85 | 8-SOIC | ROHS3 Compliant |
| LM2904DR2G | onsemi | Active | 45 | 2 | 0.8 | 40 | 3 | 26 | -40 to 85 | 8-SOIC | ROHS3 Compliant |
| LM2904VDR2G | onsemi | Active | 45 | 7 | 1.5 | 40 | 3 | 32 | -40 to 125 | 8-SOIC | ROHS3 Compliant |
| MC34072ADR2G | onsemi | Active | 100 | 0.5 | 1.9 | 30 | 3 | 44 | 0 to 70 | 8-SOIC | ROHS3 Compliant |
| MC34072DR2G | onsemi | Active | 100 | 1 | 1.9 | 30 | 3 | 44 | 0 to 70 | 8-SOIC | ROHS3 Compliant |
| MC34072VDR2G | onsemi | Active | 100 | 1 | 1.9 | 30 | 3 | 44 | -40 to 125 | 8-SOIC | ROHS3 Compliant |
| NCV2904DR2G | onsemi | Active | 45 | 7 | 1.5 | 40 | 3 | 32 | -40 to 125 | 8-SOIC | ROHS3 Compliant |
| LM358ADR | UMW | Active | 45 | 2 | 1 | 40 | — | 36 | -25 to 85 | 8-SOIC | ROHS3 Compliant |
| LM358AM/NOPB | Texas Instruments | Active | 45 | 2 | 1 | 40 | 3 | 32 | 0 to 70 | 8-SOIC | ROHS3 Compliant |
Engineering Selection Recommendations
For Direct Replacement with Identical Operating Temperature Range:
LM358DR2G and LM358AM/NOPB are the primary selections when the 0°C to 70°C operating temperature specification of the LM358AMX must be maintained. Both parts are in active production status with ROHS3 compliance. LM358DR2G is manufactured by onsemi with 492,200 units in stock, while LM358AM/NOPB is manufactured by Texas Instruments with 5,649 units in stock. Both maintain identical electrical specifications for input bias current, input offset voltage, output current, and supply voltage range.
For Extended Temperature Performance:
LM258DR2G extends the operating temperature range to -25°C to 85°C while maintaining all core electrical specifications of the LM358AMX. This part is suitable for applications requiring operation beyond the original 0°C to 70°C range. LM258DR2G is in active production with 505,200 units in stock.
LM2904VDR2G and NCV2904DR2G both extend the operating temperature range to -40°C to 125°C. These parts maintain the 1.5 mA supply current and 40 mA output current specifications of the LM358AMX. LM2904VDR2G has 48,685 units in stock, while NCV2904DR2G has 655,300 units in stock. Both are ROHS3 compliant and in active production.
For Enhanced Performance Requirements:
MC34072ADR2G, MC34072DR2G, and MC34072VDR2G offer improved electrical performance with higher gain-bandwidth products (4.5 MHz versus 1 MHz), lower input offset voltage (0.5 to 1 mV), and extended supply voltage range (up to 44 V). These parts are suitable for applications requiring superior precision and wider supply voltage tolerance. MC34072DR2G has 30,100 units in stock and maintains the 0°C to 70°C operating temperature range. MC34072VDR2G extends to -40°C to 125°C with 6,588 units in stock.
For Cross-Manufacturer Sourcing:
LM358ADR from UMW provides an alternative source with identical electrical specifications and extended temperature range (-25°C to 85°C). This part has 115,100 units in stock and is ROHS3 compliant. LM358AM/NOPB from Texas Instruments maintains the original operating temperature range and has active production status.
Compliance and Regulatory Considerations:
All recommended substitute parts maintain REACH Unaffected status and ECCN EAR99 classification, consistent with the original LM358AMX. All active production alternatives are ROHS3 compliant. Moisture Sensitivity Level (MSL) is 1 (Unlimited) for all parts, indicating no special moisture handling requirements.
Frequently Asked Questions (FAQ)
Q: Can LM358DR2G be used as a direct replacement for LM358AMX?
A: Yes. LM358DR2G is a direct functional equivalent with identical electrical specifications: 45 nA input bias current, 2 mV input offset voltage, 40 mA output current per channel, and 3V to 32V supply voltage range. Both operate at 0°C to 70°C. The primary difference is that LM358DR2G is in active production status with ROHS3 compliance, whereas LM358AMX is obsolete. Package type is identical (8-SOIC).
Q: What is the difference between LM358DR2G and LM258DR2G?
A: Both parts share identical electrical specifications and package type. The primary difference is operating temperature range: LM358DR2G operates at 0°C to 70°C, while LM258DR2G operates at -25°C to 85°C. LM258DR2G is suitable for applications requiring operation at lower or higher temperatures than the original specification.
Q: Why do LM2904VDR2G and NCV2904DR2G have different input offset voltage specifications?
A: Both parts are specified at 7 mV input offset voltage, compared to 2 mV for the LM358AMX. This represents a relaxed specification tolerance. Both parts maintain all other electrical parameters: 45 nA input bias current, 40 mA output current, and 3V to 32V supply voltage range. The extended operating temperature range (-40°C to 125°C) and higher supply current (1.5 mA) are trade-offs for enhanced temperature performance.
Q: Are MC34072 series parts compatible with LM358AMX applications?
A: MC34072 series parts are mechanically compatible (8-SOIC package) and functionally compatible for general-purpose amplifier applications. However, they offer enhanced electrical performance: higher gain-bandwidth product (4.5 MHz versus 1 MHz), lower input offset voltage (0.5 to 1 mV), and extended supply voltage range (up to 44 V). Input bias current is higher (100 nA versus 45 nA), and output current per channel is lower (30 mA versus 40 mA). These differences may affect circuit performance in applications with tight specifications or high output current requirements.
Q: What is the significance of the "V" designation in part numbers like LM2904VDR2G?
A: The "V" designation indicates extended operating temperature range (-40°C to 125°C) compared to standard temperature range variants. This allows operation across a wider temperature spectrum, suitable for automotive, industrial, and military applications.
Q: Can I use LM358ADR from UMW as a substitute?
A: Yes. LM358ADR maintains identical electrical specifications to LM358AMX: 45 nA input bias current, 2 mV input offset voltage, 40 mA output current, and 8-SOIC package. The operating temperature range is -25°C to 85°C, which exceeds the original 0°C to 70°C specification. LM358ADR is ROHS3 compliant and in active production with 115,100 units in stock.
Q: What are the supply voltage limitations when substituting parts?
A: LM358AMX operates at 3V to 32V. Most substitute parts maintain this range. LM2904DR2G has a maximum supply voltage of 26V, which is lower than the original specification. MC34072 series parts extend to 44V maximum supply voltage. Verify the specific application supply voltage requirements before selecting a substitute part.
Q: Are all substitute parts ROHS3 compliant?
A: All active production substitute parts listed are ROHS3 compliant. The original LM358AMX does not specify RoHS status. ROHS3 compliance is a regulatory requirement for new production parts in most markets.
Q: What is the difference between Cut Tape (CT) & Digi-Reel® and Tape & Reel (TR) packaging?
A: Both are surface mount packaging formats suitable for automated assembly. Cut Tape (CT) & Digi-Reel® packaging is typically used for smaller quantity orders and manual handling. Tape & Reel (TR) packaging is optimized for high-volume automated assembly. Electrical specifications and package dimensions are identical; the difference is in the physical delivery format.
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