TL431AW5-7 Equivalent & Substitute Parts

Part Overview

The TL431AW5-7 is an adjustable shunt voltage reference IC manufactured by Diodes Incorporated, designed for precision voltage regulation and reference applications. This component operates with an adjustable output voltage range from 2.495V to 36V, delivering up to 100mA output current with ±1% tolerance. The device is classified as Active product status and is RoHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained across the specified parameter range.

Substiute Parts

TL431AW5-7

Diodes IncorporatedIn Stock: 27273TL431AW5-7 Datasheet

Current PartRFQ

TL431AFDT,215

Nexperia USA Inc.In Stock: 59193TL431AFDT,215 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TL431AW5-7 are qualified based on the following critical electrical and mechanical parameters:

• Reference Type: Shunt voltage reference architecture
• Output Type: Adjustable voltage output capability
• Voltage Range: Minimum 2.495V, Maximum 36V output
• Output Current: 100mA capability
• Tolerance: ±1% accuracy specification
• Operating Temperature Range: -40°C to 125°C
• Mounting Type: Surface Mount technology
• RoHS Compliance: ROHS3 Compliant status
• Base Product Number: TL431 series equivalence

The TL431AFDT,215 qualifies as a manufacturer-recommended substitute by maintaining all critical electrical parameters while offering alternative packaging and enhanced automotive qualification.

Parameter Comparison

Engineering Selection Recommendations

Both the TL431AW5-7 and TL431AFDT,215 maintain Active product status and ROHS3 compliance. The primary distinction is packaging format and automotive qualification level. The TL431AFDT,215 carries AEC-Q100 automotive qualification, making it suitable for applications requiring automotive-grade reliability standards. The TL431AW5-7 is specified for general industrial applications. Selection between these parts depends on application requirements: standard industrial use supports either part, while automotive applications requiring AEC-Q100 qualification mandate the TL431AFDT,215. Both parts deliver equivalent electrical performance across the specified voltage and current ranges.

Frequently Asked Questions (FAQ)

Q: Can TL431AFDT,215 directly replace TL431AW5-7 in existing designs?

A: Electrical substitution is valid based on matching output voltage range (2.495V to 36V), output current (100mA), and tolerance (±1%). Package format differs: TL431AW5-7 uses SOT-753 while TL431AFDT,215 uses TO-236AB. PCB layout modification is required for package compatibility.

Q: What is the significance of the cathode current difference (700µA vs 600µA)?

A: Cathode current represents the minimum operating current requirement. The TL431AFDT,215 specification of 600µA is lower, indicating reduced minimum bias current. This does not prevent substitution; designs accommodating 700µA operation remain compatible with 600µA devices.

Q: Why does TL431AFDT,215 carry automotive qualification while TL431AW5-7 does not?

A: AEC-Q100 qualification indicates the TL431AFDT,215 has undergone automotive-specific reliability testing and qualification processes. This distinction reflects manufacturer qualification scope, not functional capability differences. Selection depends on application requirements.

Q: Are both parts suitable for new designs?

A: Both parts maintain Active product status. Selection should be based on application environment (automotive vs. industrial) and available inventory. Automotive applications require AEC-Q100 qualified parts.

Q: What packaging considerations apply to substitution?

A: TL431AW5-7 is packaged in SC-74A/SOT-753 format, while TL431AFDT,215 uses TO-236AB/SOT-23-3 format. These are physically distinct packages requiring different PCB footprints and assembly processes. Mechanical compatibility must be verified during design integration.