TL432IDBVRG4 Equivalent & Substitute Parts

Part Overview

The TL432IDBVRG4 is a shunt voltage reference IC manufactured by Texas Instruments, designed for precision voltage regulation applications. This adjustable reference device operates across a 2.495V to 36V output range with ±2.2% tolerance and supports 100 mA output current in a compact SOT-23-5 surface mount package. The product is currently classified as obsolete, making identification of compatible substitute components essential for ongoing design support and production continuity.

Substiute Parts

TL432IDBVRG4

Texas InstrumentsIn Stock: 862TL432IDBVRG4 Datasheet

Current PartRFQ

TL431MFDT,215

NXP SemiconductorsIn Stock: 9288TL431MFDT,215 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TL432IDBVRG4 is determined by strict equivalence across the following critical 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)
• Current - Cathode: 1 mA minimum
• Mounting Type: Surface mount configuration
• Package Compatibility: SOT-23 family packages

The NXP Semiconductors TL431MFDT,215 meets all substitution criteria as a direct functional equivalent within the TL431 base product family, maintaining identical electrical specifications while offering improved product status and extended operating temperature range.

Parameter Comparison

Engineering Selection Recommendations

The TL431MFDT,215 from NXP Semiconductors is the qualified substitute for the obsolete TL432IDBVRG4. Selection is based on the following engineering criteria:

• Electrical Equivalence: Both devices maintain identical core specifications for voltage output range (2.495V to 36V), output current (100 mA), and cathode current (1 mA).
• Tolerance Improvement: The substitute offers ±2% tolerance versus ±2.2%, providing superior voltage regulation precision.
• Product Status: The substitute is active and in production, ensuring long-term availability and supply chain continuity.
• Compliance: Both components are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements.
• Temperature Range: The substitute supports extended operating temperature range (-40°C to 125°C versus -40°C to 85°C), providing additional thermal margin for demanding applications.
• Package Compatibility: Both devices use SOT-23 family packages suitable for surface mount assembly, though specific pin configurations should be verified during PCB layout revision.

Frequently Asked Questions (FAQ)

Q: Can the TL431MFDT,215 directly replace the TL432IDBVRG4 without circuit modifications?

A: Electrical substitution is direct for the core voltage reference function. However, package pin configuration must be verified. The TL432IDBVRG4 uses SOT-23-5 (5-pin), while the TL431MFDT,215 uses TO-236AB (3-pin). PCB layout and schematic modifications are required to accommodate the different pin count and arrangement.

Q: What is the significance of the tolerance difference (±2.2% versus ±2%)?

A: The substitute offers tighter tolerance, meaning output voltage variation is constrained to a narrower band. This improves voltage regulation accuracy and reduces design margin requirements in applications sensitive to reference voltage stability.

Q: Are there any thermal considerations when substituting these parts?

A: The substitute supports a wider operating temperature range (-40°C to 125°C versus -40°C to 85°C). This provides additional thermal headroom and may eliminate the need for thermal management in applications previously operating near the upper temperature limit of the original part.

Q: Is the substitute available in the same packaging format?

A: Both devices are surface mount components in the SOT-23 family. However, the pin count differs (5-pin versus 3-pin), requiring PCB redesign. Verify the specific package designation and pinout before finalizing the substitution.

Q: What compliance certifications apply to the substitute?

A: The TL431MFDT,215 is ROHS3 compliant and REACH unaffected, matching the compliance profile of the original part and meeting current regulatory standards for electronic components.