TL431CPWE4 Equivalent & Substitute Parts

Part Overview

The TL431CPWE4 is a shunt voltage reference IC manufactured by Texas Instruments, designed for precision voltage regulation and reference applications. This adjustable reference device operates across a 2.495V to 36V output range with ±2.2% tolerance and supports up to 100 mA output current in an 8-TSSOP surface mount package. The product is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and procurement planning.

Substiute Parts

TL431CPWE4

Texas InstrumentsIn Stock: 1043TL431CPWE4 Datasheet

Current PartRFQ

TL431CPWR

Texas InstrumentsIn Stock: 18507TL431CPWR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TL431CPWE4 is determined by strict equivalence across the following critical parameters:

• Reference Type: Shunt voltage reference architecture
• Output Type: Adjustable output voltage capability
• Voltage Range: 2.495V minimum to 36V maximum output
• Current Rating: 100 mA output current capacity
• Tolerance: ±2.2% accuracy specification
• Package: 8-TSSOP surface mount form factor
• Cathode Current: 1 mA minimum operating current
• Temperature Range: 0°C to 70°C operating specification
• Compliance: ROHS3 and REACH compliance status

The TL431CPWE4 is functionally equivalent to the TL431CPWR, which maintains identical electrical specifications and package geometry. The primary distinction between these parts is packaging format: the TL431CPWE4 is supplied in individual packaging, while the TL431CPWR is supplied in Tape & Reel (TR) format for automated assembly operations.

Parameter Comparison

Engineering Selection Recommendations

Both the TL431CPWE4 and TL431CPWR are classified as obsolete products. Selection between these parts should be based on procurement and assembly requirements rather than electrical performance, as they are electrically and mechanically identical.

The TL431CPWR is recommended for high-volume production environments utilizing automated pick-and-place assembly, as Tape & Reel packaging is optimized for SMT line integration. The TL431CPWE4 is suitable for low-volume applications, prototyping, or manual assembly scenarios where individual component packaging is preferred.

Both parts maintain full ROHS3 compliance and REACH compliance status, ensuring regulatory alignment for current manufacturing standards. The unlimited moisture sensitivity level (MSL 1) indicates no special storage or handling precautions are required beyond standard component storage practices.

Frequently Asked Questions (FAQ)

Q: Can TL431CPWR be used as a direct replacement for TL431CPWE4?

A: Yes. The TL431CPWR is electrically and mechanically identical to the TL431CPWE4. The only difference is packaging format: TL431CPWR is supplied in Tape & Reel format, while TL431CPWE4 is supplied in individual packaging. Both parts are pin-compatible and have identical electrical specifications.

Q: What is the difference between individual packaging and Tape & Reel packaging?

A: Individual packaging supplies components in discrete units suitable for manual handling and low-volume assembly. Tape & Reel packaging supplies components on continuous carrier tape wound on reels, optimized for automated SMT assembly equipment. The electrical and mechanical properties of the component itself are unchanged.

Q: Are there any temperature or compliance differences between these parts?

A: No. Both parts operate across the identical temperature range (0°C to 70°C) and maintain the same regulatory compliance status: ROHS3 Compliant and REACH Unaffected. Moisture sensitivity level is identical at MSL 1 (Unlimited).

Q: Why is the TL431CPWE4 listed as obsolete?

A: Product obsolescence indicates the manufacturer has discontinued active production. However, the TL431CPWR remains available as the functionally equivalent alternative in Tape & Reel packaging format, ensuring continued design support through the same manufacturer.

Q: Can these parts be used interchangeably in PCB assembly?

A: Yes, provided the assembly process accommodates the packaging format. For manual or low-volume assembly, either part is suitable. For automated SMT assembly, the TL431CPWR (Tape & Reel) is the standard choice. The 8-TSSOP package geometry is identical for both parts.