LM359M General Purpose Operational Amplifier Equivalent & Substitute Parts

Part Overview

The LM359M is a general purpose operational amplifier manufactured by Texas Instruments, configured as a dual-channel (2 circuit) device in a 14-SOIC surface mount package. This component is classified as obsolete, which necessitates identification of active equivalent parts for new designs and ongoing production requirements. The LM359M provides fundamental amplification functionality suitable for general signal processing applications within the specified supply voltage and temperature operating ranges.

Substiute Parts

LM359M

Texas InstrumentsIn Stock: 886LM359M Datasheet

Current PartRFQ

LM359M/NOPB

Texas InstrumentsIn Stock: 1100LM359M/NOPB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LM359M is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Criteria:

• Amplifier Type: General Purpose
• Number of Circuits: 2 (dual-channel configuration)
• Slew Rate: 60 V/µs
• Gain Bandwidth Product: 400 MHz
• Input Bias Current: 8 µA
• Supply Current: 18.5 mA (x2 Channels)
• Output Current per Channel: 40 mA
• Supply Voltage Range: 5 V to 22 V
• Operating Temperature: 0°C to 70°C

Mechanical Equivalence Criteria:

• Mounting Type: Surface Mount
• Package: 14-SOIC (0.154", 3.90mm Width)

The LM359M/NOPB qualifies as a direct substitute based on identical electrical specifications and package configuration. The primary distinction is product status (obsolete versus active) and packaging format (tube versus unspecified for the base LM359M).

Parameter Comparison

Engineering Selection Recommendations

LM359M/NOPB as Primary Substitute:

The LM359M/NOPB is the direct functional and mechanical equivalent of the LM359M. All electrical parameters are identical, and both devices share the same 14-SOIC package configuration. The LM359M/NOPB holds active product status, ensuring continued availability and manufacturing support from Texas Instruments.

Compliance Considerations:

The LM359M/NOPB carries ROHS3 compliance certification, whereas the original LM359M is RoHS non-compliant. For applications subject to RoHS regulatory requirements, the LM359M/NOPB is the appropriate selection. Both parts maintain REACH Unaffected status and EAR99 export classification.

Packaging and Inventory:

The LM359M/NOPB is supplied in tube packaging format, whereas the original LM359M packaging format is unspecified. Current inventory availability is 1002 pieces for the LM359M/NOPB, supporting production continuity.

Frequently Asked Questions (FAQ)

Q: Can the LM359M/NOPB be used as a direct replacement for the LM359M in existing designs?

A: Yes. The LM359M/NOPB is electrically and mechanically identical to the LM359M. All performance parameters, supply voltage ranges, output current ratings, and thermal operating specifications are equivalent. Pin configuration and package dimensions are identical.

Q: What is the significance of the "/NOPB" suffix in the LM359M/NOPB part number?

A: The "/NOPB" suffix indicates "No Plumbum" (lead-free) construction and is associated with RoHS3 compliance. This designation reflects manufacturing process changes implemented by Texas Instruments to meet environmental and regulatory standards.

Q: Are there any differences in electrical performance between LM359M and LM359M/NOPB?

A: No. Both devices exhibit identical electrical characteristics across all specified parameters: slew rate, gain bandwidth product, input bias current, supply current, output current capability, and operating temperature range.

Q: Why is the LM359M classified as obsolete?

A: Product obsolescence is determined by manufacturer discontinuation decisions. The LM359M/NOPB represents the active continuation of this product line and should be used for new designs and production requirements.

Q: Is the 14-SOIC package compatible with existing PCB layouts designed for the LM359M?

A: Yes. Both the LM359M and LM359M/NOPB use the identical 14-SOIC package with 0.154-inch (3.90mm) width. PCB footprints, land patterns, and assembly processes are directly compatible.

Q: What is the moisture sensitivity level for these components?

A: Both the LM359M and LM359M/NOPB carry MSL 1 (Unlimited) classification, indicating no moisture sensitivity restrictions during storage or handling.