ZTL431ASE5TA Equivalent & Substitute Parts

Part Overview

The ZTL431ASE5TA is a shunt voltage reference IC manufactured by Diodes Incorporated, designed for adjustable voltage reference applications. This component operates with an adjustable output range from 2.5V to 20V, delivering up to 100mA output current with ±1% tolerance. The device is classified as obsolete, making identification of equivalent alternatives essential for ongoing design support and production continuity.

Substiute Parts

ZTL431ASE5TA

Diodes IncorporatedIn Stock: 30477ZTL431ASE5TA Datasheet

Current PartRFQ

ZTL431ASE5TA

Diodes IncorporatedIn Stock: 30477ZTL431ASE5TA Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the ZTL431ASE5TA 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 2.5V to maximum 20V output
• Current Rating: 100mA output current capacity
• Tolerance: ±1% voltage accuracy
• Temperature Coefficient: 48ppm/°C thermal stability
• Cathode Current: 600µA specification
• Operating Temperature Range: -40°C to 125°C
• Package: SOT-25 surface mount configuration
• Compliance: ROHS3 and REACH requirements

Only components matching all specified parameters across these categories qualify as parametric equivalents. The ZTL431ASE5TA represents the baseline specification; any substitute must maintain identical electrical performance and physical form factor.

Parameter Comparison

Engineering Selection Recommendations

The ZTL431ASE5TA is classified as obsolete. Component selection for replacement applications must prioritize parts maintaining identical electrical specifications and physical packaging to ensure direct substitution without circuit redesign.

Selection criteria are based on:

• Compliance with ROHS3 and REACH regulatory requirements
• Identical SOT-25 surface mount package configuration
• Matching shunt voltage reference architecture with adjustable output
• Equivalent electrical performance across the full operating temperature range

The parametric equivalent identified maintains all specified certifications and compliance standards required for production environments.

Frequently Asked Questions (FAQ)

Q: Can the ZTL431ASE5TA be replaced with a different reference type?

A: No. Substitution requires identical shunt reference architecture. Fixed or other reference types do not qualify as equivalents regardless of other parameter similarities.

Q: Are there package alternatives for the SOT-25?

A: The SOT-25 package is a mandatory requirement for this component. Alternative packages such as DIP or larger surface mount configurations are not acceptable substitutes.

Q: What happens if the output current requirement differs from 100mA?

A: The 100mA output current specification is a core parameter. Components with different current ratings cannot be substituted without circuit redesign and performance validation.

Q: Is the ±1% tolerance requirement strict?

A: Yes. The tolerance specification directly impacts circuit accuracy and stability. Components with wider tolerances do not meet the substitution criteria.

Q: Can this component be used in applications below -40°C or above 125°C?

A: No. The operating temperature range of -40°C to 125°C is the specified limit. Applications requiring extended temperature operation require alternative component selection.

Q: Does the 48ppm/°C temperature coefficient affect substitution?

A: Yes. The temperature coefficient is a critical parameter for thermal stability. Equivalent components must maintain this specification to ensure consistent performance across temperature variations.

Q: What is the significance of the 600µA cathode current specification?

A: The cathode current rating determines the minimum operating current for the shunt reference. This parameter must match exactly for proper circuit operation and stability.