TL431AIPG Equivalent & Substitute Parts

Part Overview

The TL431AIPG is a shunt voltage reference IC manufactured by onsemi, designed for precision voltage regulation and reference applications. This adjustable reference provides a fixed output of 2.495V with a maximum output capability of 36V and 100mA current capacity. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Substiute Parts

TL431AIPG

onsemiIn Stock: 803TL431AIPG Datasheet

Current PartRFQ

TL431AIP

onsemiIn Stock: 3333TL431AIP Datasheet

DirectRFQ

TL431ACP

onsemiIn Stock: 4616TL431ACP Datasheet

SimilarRFQ

TL431BCP

onsemiIn Stock: 5206TL431BCP Datasheet

SimilarRFQ

TL431BIP

onsemiIn Stock: 863TL431BIP Datasheet

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TL431CP

Texas InstrumentsIn Stock: 42630TL431CP Datasheet

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TL431IP

onsemiIn Stock: 4351TL431IP Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the TL431AIPG is determined by the following critical parameters:

Electrical Compatibility Requirements:

• Reference Type: Shunt
• Output Type: Adjustable
• Voltage - Output (Min/Fixed): 2.495V
• Voltage - Output (Max): 36V
• Current - Output: 100mA
• Temperature Coefficient: 50ppm/°C Typical
• Current - Cathode: 1mA

Mechanical Compatibility Requirements:

• Mounting Type: Through Hole
• Package / Case: 8-DIP (0.300", 7.62mm)
• Supplier Device Package: 8-PDIP

Tolerance Variations: Substitute parts are grouped by tolerance specification. The TL431AIPG specifies ±1% tolerance. Substitute parts with equal or tighter tolerance specifications (±0.4%) are direct functional equivalents. Parts with looser tolerance specifications (±2.2%) represent acceptable substitutes where tolerance requirements permit.

Temperature Range Variations: The TL431AIPG operates across -40°C ~ 85°C. Substitute parts with identical or extended temperature ranges are fully compatible. Parts with narrower temperature ranges (0°C ~ 70°C) are compatible only for applications within that reduced range.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent (Identical Specifications): TL431AIP is the direct equivalent to TL431AIPG, sharing identical electrical and thermal specifications with ±1% tolerance and -40°C ~ 85°C operating range. This part is the primary substitute for applications requiring no design modification.

Tighter Tolerance Substitutes: TL431BIP provides superior tolerance performance at ±0.4% while maintaining the full -40°C ~ 85°C temperature range. This part is suitable for applications where improved accuracy is beneficial and the design can accommodate tighter specifications.

TL431BCP offers ±0.4% tolerance but operates only within 0°C ~ 70°C. This part is suitable for applications with restricted temperature requirements.

Reduced Temperature Range Substitutes: TL431ACP maintains ±1% tolerance but operates within 0°C ~ 70°C. This part is suitable only for applications that do not require extended low-temperature operation below 0°C.

Looser Tolerance Substitutes: TL431IP and TL431CP both specify ±2.2% tolerance. TL431IP (onsemi) maintains the full -40°C ~ 85°C range, while TL431CP (Texas Instruments) operates within 0°C ~ 70°C. These parts are suitable only for applications where tolerance requirements permit ±2.2% variation. TL431CP carries Active product status, providing long-term availability assurance.

Compliance Considerations: All onsemi parts listed carry RoHS non-compliant status except where vendor information is undefined. TL431CP (Texas Instruments) status is not specified in provided data. REACH Unaffected status applies to all parts. Applications requiring RoHS compliance must evaluate alternative product lines.

Frequently Asked Questions (FAQ)

Q: Can TL431AIP directly replace TL431AIPG without circuit modification? A: Yes. TL431AIP is electrically and mechanically identical to TL431AIPG, sharing the same tolerance (±1%), temperature range (-40°C ~ 85°C), voltage specifications (2.495V to 36V), current rating (100mA), and 8-PDIP package. No design changes are required.

Q: What is the difference between TL431BIP and TL431AIPG? A: TL431BIP provides tighter tolerance (±0.4% versus ±1%) while maintaining identical temperature range (-40°C ~ 85°C) and all other electrical specifications. The improved tolerance makes TL431BIP suitable for applications requiring higher accuracy. Both parts use the 8-PDIP package.

Q: Can I use TL431CP as a substitute? A: TL431CP is a functional substitute only for applications where ±2.2% tolerance is acceptable. This part operates within 0°C ~ 70°C, which is narrower than TL431AIPG's -40°C ~ 85°C range. TL431CP is manufactured by Texas Instruments and carries Active product status, providing better long-term availability than obsolete alternatives.

Q: Why do some substitutes have different temperature ranges? A: Temperature range variations reflect different manufacturing grades and qualification levels. Parts specified for 0°C ~ 70°C (commercial grade) are not qualified for operation below 0°C or above 70°C. Parts specified for -40°C ~ 85°C (industrial grade) meet extended temperature requirements. Select based on your application's actual operating environment.

Q: Are all substitute parts in the same package? A: Yes. All listed substitute parts use the 8-DIP (0.300", 7.62mm) through-hole package, ensuring mechanical compatibility with TL431AIPG footprints. No PCB layout changes are required.

Q: What does the tolerance specification mean for my application? A: Tolerance specifies the maximum deviation of the output voltage from the nominal 2.495V specification. TL431AIPG at ±1% means output voltage can range from 2.470V to 2.520V. TL431BIP at ±0.4% provides tighter control (2.485V to 2.505V). TL431CP at ±2.2% allows wider variation (2.440V to 2.550V). Select tolerance based on your circuit's voltage regulation requirements.

Q: Which substitute offers the best long-term availability? A: TL431CP (Texas Instruments) carries Active product status, indicating ongoing manufacturing and support. All other listed parts are classified as Obsolete. For new designs requiring long-term component availability, TL431CP is the recommended choice, provided its ±2.2% tolerance and 0°C ~ 70°C temperature range meet application requirements.