TL431IPG4 Equivalent & Substitute Parts

Part Overview

The TL431IPG4 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 100 mA output current. The part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and procurement continuity.

Substiute Parts

TL431IPG4

Texas InstrumentsIn Stock: 913TL431IPG4 Datasheet

Current PartRFQ

TL431IP

onsemiIn Stock: 4351TL431IP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TL431IPG4 is determined by strict alignment of the following electrical and mechanical parameters:

• Reference Type: Shunt voltage reference
• Output Type: Adjustable
• Voltage Range: 2.495V minimum to 36V maximum output
• Output Current: 100 mA capability
• Tolerance: ±2.2%
• Package: 8-DIP (0.300", 7.62mm) through-hole configuration
• Operating Temperature Range: -40°C to 85°C

The TL431IP manufactured by onsemi meets all core electrical specifications and package requirements. Additional variants within the TL431 base product family (TL431AIP, TL431CP, TL431BCP, TL431BIP) and cross-manufacturer equivalents (LM431AIZ/NOPB) maintain functional compatibility when these parameters are matched.

Parameter Comparison

Engineering Selection Recommendations

The TL431IP from onsemi provides direct functional equivalence to the TL431IPG4 across all specified electrical parameters and package configuration. Both devices are classified as obsolete products.

Compliance considerations differ between the two parts: the TL431IPG4 maintains ROHS3 compliance, while the TL431IP is RoHS non-compliant. Design environments with RoHS requirements must account for this distinction during component selection.

Both parts carry identical REACH Unaffected and EAR99 ECCN classifications, with moisture sensitivity level MSL 1 (Unlimited).

Frequently Asked Questions (FAQ)

Q: Can the TL431IP directly replace the TL431IPG4 in existing designs?

A: Yes, the TL431IP provides electrical and mechanical compatibility. Both devices share identical reference type, output type, voltage range, current rating, tolerance, and 8-DIP package configuration. Verify RoHS compliance requirements for your application, as the onsemi part does not meet ROHS3 standards.

Q: What determines compatibility between TL431 variants?

A: Compatibility is established through matching of reference type (shunt), output type (adjustable), voltage output range (2.495V to 36V), output current (100 mA), tolerance (±2.2%), and package format (8-DIP through-hole). Variants within the TL431 family maintain these core specifications.

Q: Are there differences in temperature coefficient between the main part and substitute?

A: The TL431IPG4 does not specify a temperature coefficient value. The TL431IP specifies 50ppm/°C typical. Designs requiring specific temperature coefficient performance should verify this parameter against application requirements.

Q: What is the significance of the 8-DIP package specification?

A: The 8-DIP (0.300", 7.62mm) package is a through-hole configuration. This package type determines PCB layout, socket compatibility, and assembly process. Substitutes must maintain this identical package specification for direct board-level replacement without redesign.

Q: Why is product status listed as obsolete for both parts?

A: Obsolete status indicates these components are no longer in active production by their respective manufacturers. This classification necessitates procurement from existing inventory channels and may impact long-term availability for future production runs.