TLVH431BILP Equivalent & Substitute Parts

Part Overview

The TLVH431BILP is a shunt voltage reference IC manufactured by Texas Instruments, designed for precision voltage regulation applications in power management circuits. This adjustable reference device operates with a minimum output voltage of 1.24V and maximum output voltage of 18V, delivering up to 70mA output current with ±0.5% tolerance. The component is packaged in TO-92-3 (through-hole) configuration and is currently classified as Last Time Buy, indicating end-of-life status. Due to this product status, identifying functionally equivalent alternatives is essential for design continuity and long-term supply chain reliability.

Substiute Parts

TLVH431BILP

Texas InstrumentsIn Stock: 916TLVH431BILP Datasheet

Current PartRFQ

TLVH431AIDBZR

Texas InstrumentsIn Stock: 20784TLVH431AIDBZR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLVH431BILP is determined by the following critical parameters that must remain consistent across equivalent parts:

• Reference Type: Shunt voltage reference architecture
• Output Type: Adjustable output voltage capability
• Voltage Range: Minimum 1.24V, maximum 18V output
• Current Capability: 70mA output current
• Cathode Current: 100µA specification
• Operating Temperature Range: -40°C to 85°C
• Base Product Number: TLVH431 (same device family)
• Regulatory Compliance: ROHS3 Compliant, REACH Unaffected

The TLVH431AIDBZR qualifies as a manufacturer-recommended substitute based on identical electrical performance specifications and shared base product architecture. The primary distinction lies in packaging format (SOT-23-3 surface mount versus TO-92-3 through hole) and tolerance specification (±1% versus ±0.5%).

Parameter Comparison

Engineering Selection Recommendations

The TLVH431AIDBZR is the manufacturer-recommended substitute for the TLVH431BILP. Both devices share identical electrical specifications for voltage range, output current, and cathode current, ensuring functional equivalence in circuit operation.

Selection between these parts depends on design requirements:

The TLVH431BILP remains suitable for through-hole PCB designs and legacy systems where TO-92-3 packaging is specified. However, given its Last Time Buy status, inventory depletion is anticipated.

The TLVH431AIDBZR is recommended for new designs and ongoing production due to its Active product status and higher inventory availability. The SOT-23-3 surface-mount package supports modern PCB assembly processes. The ±1% tolerance specification is less stringent than the TLVH431BILP (±0.5%), which may require circuit-level evaluation if precision voltage reference accuracy is critical to system performance.

Both parts maintain ROHS3 compliance and REACH compliance status, satisfying regulatory requirements for industrial and commercial applications.

Frequently Asked Questions (FAQ)

Q: Can the TLVH431AIDBZR directly replace the TLVH431BILP in existing designs?

A: Electrical substitution is possible due to identical voltage range, output current, and cathode current specifications. However, packaging differs: TLVH431BILP uses through-hole TO-92-3, while TLVH431AIDBZR uses surface-mount SOT-23-3. PCB layout and assembly process modifications are required. The tolerance difference (±0.5% versus ±1%) must be evaluated against circuit accuracy requirements.

Q: What is the significance of the Last Time Buy status for TLVH431BILP?

A: Last Time Buy indicates the manufacturer will discontinue production. Existing inventory will be depleted, and future availability cannot be guaranteed. Designs should transition to the active TLVH431AIDBZR to ensure long-term supply chain continuity.

Q: Are there differences in thermal or noise performance between these parts?

A: Both devices operate across the same temperature range (-40°C to 85°C). Thermal coefficient and noise specifications were not provided in the technical data for either part, indicating these parameters are not differentiation factors for substitution purposes.

Q: Does the tolerance difference (±0.5% versus ±1%) affect circuit compatibility?

A: Tolerance impacts voltage reference accuracy. Applications requiring ±0.5% precision must evaluate whether ±1% tolerance is acceptable. Circuit-level testing may be necessary to confirm performance margins in precision voltage regulation applications.

Q: What packaging considerations apply when switching from TO-92-3 to SOT-23-3?

A: TO-92-3 is a through-hole package for traditional PCB assembly. SOT-23-3 is a surface-mount package requiring SMD assembly equipment and different PCB footprints. Pin configuration remains functionally equivalent, but board layout, soldering process, and assembly procedures differ significantly.