TL432QDBVT Equivalent & Substitute Parts

Part Overview

The TL432QDBVT is a shunt voltage reference IC manufactured by Texas Instruments, designed for precision voltage regulation and reference applications. This adjustable reference device operates across a 2.495V to 36V output range with ±2.2% tolerance and supports 100 mA output current. The device is classified as obsolete, making identification of suitable substitute components essential for ongoing design support and production continuity.

Substiute Parts

TL432QDBVT

Texas InstrumentsIn Stock: 849TL432QDBVT Datasheet

Current PartRFQ

TL431MFDT,215

NXP SemiconductorsIn Stock: 9288TL431MFDT,215 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TL432QDBVT is determined by equivalence across the following critical electrical and mechanical parameters:

• Reference Type: Shunt voltage reference architecture
• Output Type: Adjustable output voltage capability
• Voltage Range: Minimum 2.495V, maximum 36V output
• Current Rating: 100 mA output current capacity
• Tolerance: ±2% or better (±2.2% or tighter)
• Cathode Current: 1 mA minimum
• Operating Temperature Range: -40°C to 125°C
• Mounting Type: Surface mount configuration
• Package Compatibility: SOT-23 family packages

The TL431MFDT,215 from NXP Semiconductors meets all substitution criteria as an active product with equivalent electrical specifications and compatible packaging.

Parameter Comparison

Engineering Selection Recommendations

The TL431MFDT,215 is the qualified substitute for the obsolete TL432QDBVT. Selection is based on the following engineering criteria:

• Electrical Equivalence: Both devices share identical shunt reference architecture, output voltage range (2.495V to 36V), current ratings (100 mA output, 1 mA cathode), and operating temperature specifications (-40°C to 125°C).
• Tolerance Improvement: The TL431MFDT,215 offers ±2% tolerance, which is superior to the TL432QDBVT's ±2.2%, providing enhanced precision for voltage regulation applications.
• Product Status: The TL431MFDT,215 maintains active production status, ensuring long-term availability and supply chain continuity compared to the obsolete TL432QDBVT.
• Compliance: Both devices maintain ROHS3 compliance and MSL 1 (unlimited) moisture sensitivity ratings, supporting equivalent environmental and regulatory requirements.
• Package Compatibility: Both devices utilize SOT-23 family surface-mount packages, enabling direct PCB layout compatibility with minimal or no redesign.

Frequently Asked Questions (FAQ)

Q: Can the TL431MFDT,215 directly replace the TL432QDBVT in existing designs?

A: Yes. Both devices are shunt voltage reference ICs with identical electrical specifications (2.495V to 36V adjustable output, 100 mA current, 1 mA cathode current, -40°C to 125°C operating range) and compatible SOT-23 surface-mount packaging. The TL431MFDT,215 offers improved ±2% tolerance versus the TL432QDBVT's ±2.2%.

Q: What is the difference between the package designations SC-74A/SOT-753 and TO-236-3/SC-59/SOT-23-3?

A: These are equivalent package family designations for the same physical form factor. SC-74A and SOT-753 refer to the same 5-pin surface-mount package used by the TL432QDBVT. TO-236-3, SC-59, and SOT-23-3 refer to the 3-pin variant used by the TL431MFDT,215. Pin configuration differences require verification against device datasheets for proper circuit integration.

Q: Why is the TL432QDBVT listed as obsolete?

A: The TL432QDBVT has reached end-of-life status with Texas Instruments. The TL431MFDT,215 from NXP Semiconductors provides equivalent functionality with active production support and improved tolerance specifications.

Q: Are there compliance or certification differences between these devices?

A: Both devices maintain ROHS3 compliance and MSL 1 (unlimited) ratings. The TL431MFDT,215 is actively produced and certified, while the TL432QDBVT is obsolete. For new designs or production continuity, the TL431MFDT,215 is the recommended selection.

Q: What inventory considerations apply to these parts?

A: The TL432QDBVT has 813 pieces available as new original stock. The TL431MFDT,215 has 9,221 pieces in inventory with active production status, providing superior long-term availability for ongoing production requirements.