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LM358AMX Equivalent & Substitute Parts
Part Overview
The LM358AMX is a general-purpose operational amplifier featuring two circuits in an 8-SOIC surface mount package, manufactured by Texas Instruments. This device is classified as obsolete, with 3,938 units currently in stock. The LM358AMX operates across a supply voltage range of 3V to 32V and is suitable for applications requiring dual-channel amplification with low input bias current and moderate output drive capability. Due to its obsolete status, identifying functionally equivalent substitute parts is essential for design continuity and procurement planning.
Substiute Parts
Key Parameters
| Parameter | LM358AMX |
|---|---|
| Manufacturer | Texas Instruments |
| Amplifier Type | General Purpose |
| Number of Circuits | 2 |
| Current - Input Bias | 45 nA |
| Voltage - Input Offset | 2 mV |
| Current - Supply | 1 mA |
| Current - Output / Channel | 40 mA |
| Voltage - Supply Span (Min) | 3 V |
| Voltage - Supply Span (Max) | 32 V |
| Operating Temperature | 0°C ~ 70°C |
| Mounting Type | Surface Mount |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) |
| Part Status | Obsolete |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitute parts for the LM358AMX are grouped based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:
Critical Matching Parameters:
- Number of Circuits: 2 (dual-channel requirement)
- Amplifier Type: General Purpose
- Voltage Supply Range: Minimum 3V, Maximum ≥32V
- Current - Input Bias: ≤45 nA (lower values acceptable)
- Voltage - Input Offset: ≤2 mV (lower values acceptable)
- Current - Output / Channel: ≥40 mA (equal or higher acceptable)
- Mounting Type: Surface Mount
- RoHS Compliance: ROHS3 Compliant
Package Considerations: Substitutes are available in 8-SOIC and 8-SOP packages. The 8-SOIC (0.154", 3.90mm Width) is the direct mechanical equivalent. The 8-SOP (0.173", 4.40mm Width) represents a slightly wider package variant that may require PCB layout verification.
Product Status Priority: Active status substitutes are preferred over obsolete parts for long-term design continuity. The LM358AMX/NOPB (Texas Instruments, Active) provides the closest direct replacement with identical electrical specifications and packaging.
Parameter Comparison
| Part Number | Manufacturer | Status | Input Bias (nA) | Input Offset (mV) | Supply Current (mA) | Output Current (mA) | Supply Min (V) | Supply Max (V) | Temp Range (°C) | Package |
|---|---|---|---|---|---|---|---|---|---|---|
| LM358AMX | Texas Instruments | Obsolete | 45 | 2 | 1 | 40 | 3 | 32 | 0 ~ 70 | 8-SOIC (3.90mm) |
| LM358AMX/NOPB | Texas Instruments | Active | 45 | 2 | 1 | 40 | 3 | 32 | 0 ~ 70 | 8-SOIC (3.90mm) |
| BA10358F-E1 | Rohm Semiconductor | Active | 45 | 2 | 0.7 | 20 | 3 | 32 | -40 ~ 85 | 8-SOP (4.40mm) |
| BA10358F-E2 | Rohm Semiconductor | Active | 45 | 2 | 0.7 | 20 | 3 | 32 | -40 ~ 85 | 8-SOP (4.40mm) |
| BA2904F-E2 | Rohm Semiconductor | Active | 20 | 2 | 0.5 | 30 | 3 | 32 | -40 ~ 125 | 8-SOP (4.40mm) |
| BA2904SF-E2 | Rohm Semiconductor | Active | 20 | 2 | 0.5 | 30 | 3 | 32 | -40 ~ 105 | 8-SOP (4.40mm) |
| BA3472F-E2 | Rohm Semiconductor | Active | 100 | 1.5 | 4 | 30 | 3 | 36 | -40 ~ 85 | 8-SOP (4.40mm) |
| LM158DT | STMicroelectronics | Active | 20 | 5 | 1.4 | 40 | 3 | 30 | -55 ~ 125 | 8-SOIC (3.90mm) |
| LM258ADT | STMicroelectronics | Active | 20 | 1 | 1.4 | 40 | 3 | 30 | -40 ~ 105 | 8-SOIC (3.90mm) |
| LM258DR2G | onsemi | Active | 45 | 2 | 1.6 | 40 | 3 | 32 | -25 ~ 85 | 8-SOIC (3.90mm) |
| LM258DT | STMicroelectronics | Active | 20 | 5 | 1.4 | 40 | 3 | 30 | -40 ~ 105 | 8-SOIC (3.90mm) |
Engineering Selection Recommendations
Tier 1 - Direct Replacement (Identical Specifications):
LM358AMX/NOPB (Texas Instruments, Active) is the primary recommended substitute. This part maintains identical electrical specifications and packaging to the obsolete LM358AMX, with the advantage of active product status. The only difference is packaging format (Cut Tape & Digi-Reel® versus Tape & Reel), which does not affect electrical performance. This part is suitable for direct PCB substitution without design modification.
Tier 2 - Compatible Substitutes (8-SOIC Package, Matched Supply Range):
LM258DR2G (onsemi, Active) and LM258DT (STMicroelectronics, Active) are compatible substitutes in the 8-SOIC (3.90mm) package. Both maintain the 3V to 30V supply range (LM258DT) or 3V to 32V (LM258DR2G), 40 mA output current, and dual-circuit configuration. These parts feature improved input bias current (20 nA) and lower input offset voltage (1-5 mV), making them functionally superior. Temperature range differences must be evaluated against application requirements.
Tier 3 - Extended Temperature Range Substitutes (8-SOIC Package):
LM158DT (STMicroelectronics, Active, AEC-Q100 Automotive Qualified) provides extended temperature operation (-55°C to 125°C) in the 8-SOIC package. This part is suitable for applications requiring automotive-grade reliability and wider temperature coverage. Note that maximum supply voltage is 30V (versus 32V for LM358AMX).
Tier 4 - Alternative Package Substitutes (8-SOP, 4.40mm Width):
BA10358F-E1, BA10358F-E2, BA2904F-E2, BA2904SF-E2, and BA3472F-E2 (Rohm Semiconductor, Active) are available in 8-SOP packages with 4.40mm width. These parts require PCB layout verification due to package width difference (0.173" versus 0.154"). BA2904F-E2 and BA2904SF-E2 offer improved specifications (20 nA input bias, 30 mA output current, extended temperature to 125°C). BA3472F-E2 provides higher performance (4 MHz gain-bandwidth product, 10V/µs slew rate) for applications requiring faster response.
Compliance Verification:
All recommended substitutes maintain ROHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with standard manufacturing and storage practices.
Frequently Asked Questions (FAQ)
Q1: Can LM358AMX/NOPB be used as a direct replacement for LM358AMX?
A: Yes. LM358AMX/NOPB is the active production equivalent of the obsolete LM358AMX. Both parts share identical electrical specifications, dual-circuit configuration, 8-SOIC packaging, and supply voltage range (3V to 32V). The only difference is packaging format (Cut Tape & Digi-Reel® versus Tape & Reel), which does not affect circuit performance. Direct PCB substitution is possible without design modification.
Q2: What are the key differences between 8-SOIC and 8-SOP packages?
A: The 8-SOIC (0.154", 3.90mm width) and 8-SOP (0.173", 4.40mm width) packages differ in body width. The 8-SOP is 0.019" wider, which may affect PCB layout, particularly in space-constrained designs. Pin pitch and lead configuration remain compatible. PCB layout verification is required before substituting 8-SOP parts into designs originally specified for 8-SOIC.
Q3: Are Rohm Semiconductor BA10358F and BA2904F series suitable substitutes?
A: BA10358F-E1 and BA10358F-E2 are functionally compatible but feature reduced output current (20 mA versus 40 mA) and lower supply current (0.7 mA versus 1 mA). These parts are suitable for applications not requiring maximum output drive. BA2904F-E2 and BA2904SF-E2 offer improved performance with 30 mA output current and lower input bias current (20 nA). All Rohm parts are available in 8-SOP packages and require PCB layout verification.
Q4: What is the significance of input bias current and input offset voltage differences?
A: Input bias current (45 nA for LM358AMX versus 20 nA for LM258 series) affects circuit accuracy in high-impedance applications. Lower bias current reduces input current errors. Input offset voltage (2 mV for LM358AMX versus 1-5 mV for alternatives) determines DC accuracy. Substitutes with lower input bias current and offset voltage provide improved precision but are functionally compatible with the original specification.
Q5: Can LM158DT be used in place of LM358AMX?
A: LM158DT is functionally compatible with identical output current (40 mA) and dual-circuit configuration in 8-SOIC packaging. However, maximum supply voltage is 30V (versus 32V for LM358AMX). LM158DT is suitable for applications operating within 3V to 30V range. The part offers extended temperature operation (-55°C to 125°C) and AEC-Q100 automotive qualification, making it suitable for demanding environments.
Q6: What temperature range considerations apply to substitute selection?
A: LM358AMX operates 0°C to 70°C. Substitutes offer various ranges: LM258 series (-40°C to 105°C), LM158DT (-55°C to 125°C), and Rohm BA series (-40°C to 85°C or -40°C to 125°C). Select substitutes based on application temperature requirements. Extended range parts provide design margin for thermal variations but may have different performance characteristics at temperature extremes.
Q7: Are all recommended substitutes ROHS3 compliant?
A: Yes. All substitute parts listed maintain ROHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with standard manufacturing processes and storage requirements. Compliance documentation is available from respective manufacturers.
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