TL431ACPW Equivalent & Substitute Parts

Part Overview

The TL431ACPW is a shunt voltage reference IC with adjustable output, manufactured by Texas Instruments. This component functions as a precision voltage reference suitable for power management applications requiring stable reference voltages between 2.495V and 36V with ±1% tolerance. The TL431ACPW is classified as obsolete, making identification of active equivalent parts essential for ongoing design support and procurement continuity. The substitute part TL431ACDBZR maintains identical electrical specifications while offering active product status and improved availability.

Substiute Parts

TL431ACPW

Texas InstrumentsIn Stock: 5250TL431ACPW Datasheet

Current PartRFQ

TL431ACDBZR

Texas InstrumentsIn Stock: 77248TL431ACDBZR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TL431ACPW with the TL431ACDBZR is based on electrical parameter equivalence across all critical specifications. Both parts share identical electrical characteristics: adjustable shunt reference output, 2.495V minimum to 36V maximum output voltage range, 100 mA output current capability, ±1% tolerance, and 600 µA cathode current. Both components operate across the same temperature range (0°C ~ 70°C) and maintain equivalent compliance certifications (ROHS3, REACH Unaffected, EAR99). The primary distinction lies in packaging format and product lifecycle status. The TL431ACPW uses 8-TSSOP packaging and is obsolete, while the TL431ACDBZR employs SOT-23-3 packaging and maintains active product status with significantly higher inventory availability (77,200 pcs vs. 5,200 pcs).

Parameter Comparison

Engineering Selection Recommendations

The TL431ACDBZR is the direct electrical equivalent to the TL431ACPW and is recommended for new designs and procurement. Both parts maintain identical electrical performance specifications and compliance certifications (ROHS3 Compliant, REACH Unaffected, EAR99). The TL431ACDBZR offers the advantage of active product status, ensuring long-term availability and manufacturing support. The primary design consideration is package format: the TL431ACPW uses 8-TSSOP packaging while the TL431ACDBZR uses SOT-23-3 packaging. PCB layout and footprint modifications are required when transitioning between these packages. The TL431ACDBZR's significantly higher inventory level (77,200 pcs) provides superior supply chain reliability compared to the obsolete TL431ACPW.

Frequently Asked Questions (FAQ)

Q: Are the TL431ACPW and TL431ACDBZR electrically identical?

A: Yes. Both parts share identical electrical specifications including output voltage range (2.495V to 36V), output current (100 mA), tolerance (±1%), cathode current (600 µA), and operating temperature range (0°C ~ 70°C).

Q: What is the primary difference between these parts?

A: The main differences are packaging format and product lifecycle status. The TL431ACPW uses 8-TSSOP packaging and is obsolete. The TL431ACDBZR uses SOT-23-3 packaging and maintains active product status with higher inventory availability.

Q: Can I use TL431ACDBZR as a direct replacement for TL431ACPW on existing PCBs?

A: Direct PCB replacement is not possible due to different package formats. The 8-TSSOP and SOT-23-3 packages have different footprints and pin configurations. PCB redesign and re-layout are required.

Q: Do both parts meet the same compliance requirements?

A: Yes. Both the TL431ACPW and TL431ACDBZR are ROHS3 Compliant, REACH Unaffected, and classified as EAR99 for export control purposes.

Q: Why should I choose TL431ACDBZR over TL431ACPW?

A: The TL431ACDBZR is recommended because it maintains active product status, ensuring continued manufacturing support and availability. The obsolete status of the TL431ACPW creates long-term supply chain risk.