LM4132AMF-1.8 Equivalent & Substitute Parts

Part Overview

The LM4132AMF-1.8 is a Series Voltage Reference IC from Texas Instruments, designed to provide a fixed 1.8V output with ±0.05% tolerance in a SOT-23-5 surface mount package. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The part delivers 20 mA output current with low noise characteristics and operates across the industrial temperature range of -40°C to 125°C.

Substiute Parts

LM4132AMF-1.8

Texas InstrumentsIn Stock: 1517LM4132AMF-1.8 Datasheet

Current PartRFQ

LM4132AMF-1.8/NOPB

Texas InstrumentsIn Stock: 2110LM4132AMF-1.8/NOPB Datasheet

Parametric EquivalentRFQ

LM4132AMFX-1.8/NOPB

Texas InstrumentsIn Stock: 862LM4132AMFX-1.8/NOPB Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the LM4132AMF-1.8 is determined by strict equivalence across all electrical and mechanical parameters. The substitute parts must maintain identical specifications for output voltage, tolerance, temperature coefficient, noise performance, input voltage range, supply current, operating temperature range, and package configuration. All identified substitutes are from the same manufacturer (Texas Instruments) and share the base product number LM4132, ensuring functional and mechanical compatibility.

The key parameters governing substitution are:

• Fixed output voltage of 1.8V
• Voltage tolerance of ±0.05%
• Temperature coefficient of 20 ppm/°C
• Output current capability of 20 mA
• Input voltage range of 2.2V ~ 5.5V
• SOT-23-5 package configuration
• Surface mount technology

Parameter Comparison

Engineering Selection Recommendations

For new designs and production applications, LM4132AMF-1.8/NOPB or LM4132AMFX-1.8/NOPB are the appropriate selections. Both substitute parts are classified as Active products, ensuring long-term availability and manufacturing support. Both substitutes carry ROHS3 compliance, meeting current environmental and regulatory requirements, whereas the original LM4132AMF-1.8 is RoHS non-compliant.

The /NOPB designation indicates lead-free plating, which aligns with modern manufacturing standards. All three parts maintain identical electrical performance and package configuration, enabling direct substitution at the circuit board level. The choice between LM4132AMF-1.8/NOPB and LM4132AMFX-1.8/NOPB depends on inventory availability and supply chain requirements, as both deliver equivalent functionality.

Frequently Asked Questions (FAQ)

Q: Can LM4132AMF-1.8/NOPB be used as a direct replacement for LM4132AMF-1.8?

A: Yes. Both parts share identical electrical specifications, including output voltage, tolerance, temperature coefficient, noise performance, and operating range. The package configuration (SOT-23-5) and pin assignment are identical, enabling direct substitution without circuit modification.

Q: What is the difference between LM4132AMF-1.8/NOPB and LM4132AMFX-1.8/NOPB?

A: Both parts are parametric equivalents with identical electrical and mechanical specifications. The primary differences are product status (both Active), RoHS compliance (both ROHS3 Compliant), and inventory availability. Selection between these two should be based on supply chain and procurement requirements.

Q: Why is the original LM4132AMF-1.8 marked as obsolete?

A: The original part is classified as obsolete due to its RoHS non-compliant status. Texas Instruments has transitioned to lead-free, RoHS3-compliant versions (LM4132AMF-1.8/NOPB and LM4132AMFX-1.8/NOPB) to meet current environmental regulations and manufacturing standards.

Q: Are there any electrical performance differences between the three parts?

A: No. All three parts deliver identical electrical performance: 1.8V fixed output, ±0.05% tolerance, 20 ppm/°C temperature coefficient, 170 µVp-p noise, 20 mA output current, and 100 µA supply current across the -40°C to 125°C operating range.

Q: Can these parts be used interchangeably in existing PCB designs?

A: Yes. The SOT-23-5 package and pin configuration are identical across all three parts. No PCB layout modifications are required for substitution.

Q: What is the significance of the /NOPB suffix?

A: The /NOPB designation indicates lead-free plating and RoHS compliance. This suffix is standard for modern component manufacturing and ensures compatibility with lead-free soldering processes.