LM4132DMF-1.8 Equivalent & Substitute Parts

Part Overview

The LM4132DMF-1.8 is a Series Voltage Reference IC from Texas Instruments, designed to provide a fixed 1.8V output with ±0.4% tolerance. This component is classified as a Power Management (PMIC) device and is packaged in SOT-23-5 surface mount configuration. The main part number is currently listed as Obsolete, which necessitates identification of active equivalent alternatives for new designs and production applications.

Substiute Parts

LM4132DMF-1.8

Texas InstrumentsIn Stock: 3303LM4132DMF-1.8 Datasheet

Current PartRFQ

LM4132DMF-1.8/NOPB

Texas InstrumentsIn Stock: 3987LM4132DMF-1.8/NOPB Datasheet

Parametric EquivalentRFQ

LM4132DMFX-1.8/NOPB

Texas InstrumentsIn Stock: 765LM4132DMFX-1.8/NOPB Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LM4132DMF-1.8 is determined by strict equivalence across the following critical parameters:

• Fixed output voltage of 1.8V
• Output current capability of 20 mA
• Voltage tolerance of ±0.4%
• Temperature coefficient of 20ppm/°C
• Noise specification of 170µVp-p (0.1Hz to 10Hz)
• Input voltage range of 2.2V ~ 5.5V
• Supply current of 100µA
• Operating temperature range of -40°C ~ 125°C
• SOT-23-5 package configuration
• Surface mount mounting type

The identified substitute parts maintain identical electrical and mechanical specifications to the main part number, with the primary distinction being product status and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

Both LM4132DMF-1.8/NOPB and LM4132DMFX-1.8/NOPB are direct parametric equivalents to the obsolete LM4132DMF-1.8. Selection between these active alternatives should be based on the following factors:

Product Status: Both substitute parts are Active, ensuring continued availability and manufacturing support from Texas Instruments.

Compliance: Both substitute parts are ROHS3 Compliant, whereas the main part is RoHS non-compliant. This compliance status is critical for applications subject to RoHS regulations.

Packaging Format: Both substitute parts are supplied in Tape & Reel (TR) format, suitable for automated assembly processes. The main part was supplied in bulk packaging.

Inventory Availability: LM4132DMF-1.8/NOPB has 3,894 pieces in stock, while LM4132DMFX-1.8/NOPB has 690 pieces in stock. Inventory levels may influence procurement decisions based on production volume requirements.

All three part numbers share identical electrical specifications, mechanical dimensions, and thermal characteristics, making them fully interchangeable at the circuit level.

Frequently Asked Questions (FAQ)

Q: Can LM4132DMF-1.8/NOPB and LM4132DMFX-1.8/NOPB be used interchangeably with the obsolete LM4132DMF-1.8?

A: Yes. Both substitute parts maintain identical electrical and mechanical specifications, including output voltage, current rating, tolerance, temperature coefficient, noise characteristics, input voltage range, and SOT-23-5 package configuration. They are direct functional equivalents.

Q: What is the difference between LM4132DMF-1.8/NOPB and LM4132DMFX-1.8/NOPB?

A: Both parts are parametrically identical. The primary differences are product status (both Active), inventory levels, and the suffix designation. Both are ROHS3 Compliant and supplied in Tape & Reel packaging.

Q: Why is the original LM4132DMF-1.8 listed as Obsolete?

A: The obsolete status indicates that Texas Instruments has discontinued standard production of this part number. The active equivalents LM4132DMF-1.8/NOPB and LM4132DMFX-1.8/NOPB provide continued access to the same functionality and specifications.

Q: Are there any compliance differences between the main part and the substitutes?

A: Yes. The original LM4132DMF-1.8 is RoHS non-compliant, while both substitute parts are ROHS3 Compliant. This is significant for applications requiring RoHS certification.

Q: Does the packaging format affect electrical performance?

A: No. The Tape & Reel (TR) packaging of the substitute parts provides the same electrical and thermal performance as the bulk packaging of the original part. The packaging format affects only handling, storage, and assembly processes.

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

A: The "/NOPB" suffix indicates "No Plumbum" (lead-free) configuration, which aligns with RoHS3 compliance requirements. This is standard for current production parts from Texas Instruments.