LM324AWPT Equivalent & Substitute Parts

Part Overview

The LM324AWPT is a general-purpose operational amplifier manufactured by STMicroelectronics, configured as a 4-circuit integrated circuit in a 14-TSSOP surface mount package. This device is actively produced and widely used in analog signal processing, instrumentation, and audio applications where low-cost, general-purpose amplification is required. The LM324AWPT operates across a wide supply voltage range of 3V to 30V and is suitable for single or dual supply configurations.

Substitute parts become necessary when the primary part experiences supply constraints, extended lead times, or when alternative packaging formats are required for specific manufacturing processes. The parts listed below maintain functional equivalence within the specified electrical and mechanical parameters.

Substiute Parts

LM324AWPT

STMicroelectronicsIn Stock: 40060LM324AWPT Datasheet

Current PartRFQ

LM324KAPW

Texas InstrumentsIn Stock: 1739LM324KAPW Datasheet

SimilarRFQ

LM324KAPWR

Texas InstrumentsIn Stock: 10227LM324KAPWR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LM324AWPT is determined by strict equivalence across the following critical parameters:

Functional Equivalence Criteria:

• Amplifier Type: General Purpose (4-circuit configuration)
• Package / Case: 14-TSSOP with identical 0.173" (4.40mm) width
• Mounting Type: Surface Mount
• Supply Voltage Range: 3V to 30V minimum and maximum
• Operating Temperature Range: 0°C to 70°C
• RoHS3 Compliance and MSL Level 1 rating

Acceptable Parameter Variations: Substitute parts may exhibit minor differences in the following parameters while maintaining functional compatibility:

• Slew Rate: 0.4V/µs to 0.5V/µs
• Gain Bandwidth Product: 1.2 MHz to 1.3 MHz
• Current - Input Bias: 15 nA to 20 nA
• Current - Supply: 1.4 mA to 1.5 mA
• Current - Output / Channel: 30 mA to 40 mA

These variations remain within acceptable tolerances for general-purpose amplifier applications and do not compromise circuit functionality in standard configurations.

Packaging Format Variations: Substitute parts may differ in packaging format (Tape & Reel, Tube, or Cut Tape & Digi-Reel) without affecting electrical performance. Packaging selection depends on manufacturing process requirements and inventory management practices.

Parameter Comparison

Engineering Selection Recommendations

LM324KAPWR (Texas Instruments) - Primary Substitute

The LM324KAPWR is the preferred substitute for the LM324AWPT. Both devices maintain identical electrical specifications within acceptable tolerances and share the same 14-TSSOP package footprint. The LM324KAPWR is currently in Active product status with 10,200 units in stock, providing reliable long-term availability. This part is supplied in Cut Tape & Digi-Reel® format, suitable for automated assembly processes. All compliance certifications (ROHS3, MSL Level 1, REACH Unaffected) are equivalent to the primary part.

LM324KAPW (Texas Instruments) - Secondary Substitute

The LM324KAPW is functionally equivalent to the LM324AWPT with identical electrical parameters within acceptable tolerances. However, this part carries a Last Time Buy product status, indicating limited future availability. The LM324KAPW is supplied in Tube packaging format. Selection of this part should be limited to applications where immediate availability is critical and long-term supply continuity is not a primary concern. Current inventory stands at 1,682 units.

Packaging Format Considerations

The LM324AWPT is supplied in Tape & Reel format. The LM324KAPWR substitute is available in Cut Tape & Digi-Reel® format, which is compatible with standard pick-and-place assembly equipment. The LM324KAPW is supplied in Tube format, which requires manual handling or specialized tube-feeding equipment. Packaging format selection depends on manufacturing process capabilities and assembly line configuration.

Compliance and Regulatory Status

All three parts maintain ROHS3 compliance, MSL Level 1 rating, and REACH Unaffected status. No regulatory or environmental restrictions apply to any substitute selection.

Frequently Asked Questions (FAQ)

Q: Can the LM324KAPWR be used as a direct replacement for the LM324AWPT in existing designs?

A: Yes. The LM324KAPWR is electrically and mechanically compatible with the LM324AWPT. Both devices share identical package geometry (14-TSSOP, 0.173" width), mounting type (Surface Mount), and supply voltage range (3V to 30V). The minor differences in slew rate (0.5V/µs vs. 0.4V/µs), gain bandwidth product (1.2 MHz vs. 1.3 MHz), and output current (30 mA vs. 40 mA per channel) do not affect functionality in standard general-purpose amplifier applications.

Q: What is the difference between the packaging formats offered?

A: The LM324AWPT is supplied in Tape & Reel (TR) format, which is standard for high-volume automated assembly. The LM324KAPWR is supplied in Cut Tape & Digi-Reel® format, also suitable for automated pick-and-place equipment. The LM324KAPW is supplied in Tube format, which requires manual component handling or specialized tube-feeding equipment. All three formats contain the same die and offer identical electrical performance.

Q: Why is the LM324KAPW marked as Last Time Buy?

A: Last Time Buy status indicates that Texas Instruments has announced the end of production for this part number. Existing inventory will be sold until depletion, after which the part will no longer be available. For new designs or long-term production requirements, the LM324KAPWR (Active status) is the recommended substitute.

Q: Are there any temperature or supply voltage limitations when substituting parts?

A: No. All three parts operate across the identical temperature range (0°C to 70°C) and supply voltage range (3V to 30V). Substitution does not introduce any thermal or voltage-related constraints.

Q: What is the significance of the MSL Level 1 rating?

A: MSL (Moisture Sensitivity Level) 1 indicates unlimited shelf life with no moisture-related storage restrictions. All three parts carry this rating, meaning they can be stored indefinitely without special humidity control or baking procedures prior to assembly.

Q: Can the LM324KAPW be used if the LM324KAPWR is unavailable?

A: Yes, the LM324KAPW is electrically equivalent to both the LM324AWPT and LM324KAPWR. However, due to its Last Time Buy status, inventory is limited (1,682 units). This part should be reserved for applications where immediate availability is critical and long-term supply continuity is not required.

Q: How do the input bias current differences affect circuit design?

A: The LM324AWPT specifies 20 nA input bias current, while the LM324KAPW and LM324KAPWR specify 15 nA. This 5 nA difference is negligible in most general-purpose amplifier applications. Input bias current primarily affects high-impedance circuits and precision instrumentation. For standard applications, both specifications are functionally equivalent.

Q: Is the 10 mA difference in output current per channel significant?

A: The LM324AWPT provides 40 mA per channel output current, while the LM324KAPW and LM324KAPWR provide 30 mA per channel. This difference is relevant only for applications requiring high output current drive. For standard signal conditioning and low-impedance load applications, both specifications are adequate. Applications requiring maximum output current should retain the LM324AWPT.