TL431BCPG Equivalent & Substitute Parts

Part Overview

The TL431BCPG is a shunt voltage reference IC manufactured by onsemi, designed for precision voltage regulation applications. This adjustable reference provides a fixed output of 2.495V with a maximum output capability of 36V and supports up to 100mA output current. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Substiute Parts

TL431BCPG

onsemiIn Stock: 887TL431BCPG Datasheet

Current PartRFQ

TL431BCP

onsemiIn Stock: 5206TL431BCP Datasheet

DirectRFQ

TL431ACP

onsemiIn Stock: 4616TL431ACP Datasheet

SimilarRFQ

TL431AIP

onsemiIn Stock: 3333TL431AIP Datasheet

SimilarRFQ

TL431BIP

onsemiIn Stock: 863TL431BIP Datasheet

SimilarRFQ

TL431CP

Texas InstrumentsIn Stock: 42630TL431CP Datasheet

SimilarRFQ

TL431IP

onsemiIn Stock: 4351TL431IP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the TL431BCPG is determined by the following critical parameters:

Primary Substitution Criteria:

• Reference Type: Shunt
• Output Type: Adjustable
• Voltage - Output (Min/Fixed): 2.495V
• Voltage - Output (Max): 36V
• Current - Output: 100mA
• Package / Case: 8-DIP (0.300", 7.62mm)
• Mounting Type: Through Hole

Secondary Substitution Criteria (Tolerance Variations):

• Tolerance: ±0.4%, ±1%, or ±2.2%
• Operating Temperature: 0°C ~ 70°C or -40°C ~ 85°C
• Manufacturer: onsemi or Texas Instruments

Parts are grouped into direct equivalents (matching tolerance and temperature range) and similar alternatives (differing tolerance or temperature specifications). All substitute parts maintain identical electrical output characteristics and physical packaging, ensuring mechanical and functional compatibility.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent (Recommended for Pin-for-Pin Replacement): TL431BCP is the direct equivalent to TL431BCPG, maintaining identical tolerance (±0.4%), operating temperature range (0°C ~ 70°C), and electrical specifications. Both parts are obsolete but available in inventory.

Extended Temperature Range Alternative: TL431BIP provides the same ±0.4% tolerance as the TL431BCPG but extends the operating temperature range to -40°C ~ 85°C, suitable for applications requiring wider temperature performance.

Active Product Alternative: TL431CP, manufactured by Texas Instruments, is the only active product in the substitute family. It maintains the same package, voltage output, and current specifications but with a relaxed tolerance of ±2.2%. This part is suitable for applications where the tighter tolerance of the original part is not critical and long-term availability is required.

Tolerance Trade-offs: TL431ACP and TL431AIP offer ±1% tolerance, providing a middle ground between the original ±0.4% specification and the ±2.2% tolerance of the TL431CP. These parts are obsolete but available in inventory.

All substitute parts share identical mechanical packaging (8-DIP through-hole), electrical output range (2.495V to 36V), and output current capability (100mA), ensuring direct functional compatibility in existing circuit designs.

Frequently Asked Questions (FAQ)

Q: Can TL431BCP be used as a direct replacement for TL431BCPG? A: Yes. TL431BCP is a direct equivalent with identical tolerance (±0.4%), operating temperature range (0°C ~ 70°C), and all electrical specifications. Both parts are pin-compatible in 8-DIP packaging.

Q: What is the difference between TL431BCP and TL431BIP? A: Both parts share the same ±0.4% tolerance and electrical specifications. The primary difference is operating temperature range: TL431BCP operates from 0°C ~ 70°C, while TL431BIP operates from -40°C ~ 85°C. TL431BIP is suitable for applications requiring extended temperature performance.

Q: Is TL431CP a suitable replacement for TL431BCPG? A: TL431CP is functionally compatible but with a relaxed tolerance specification of ±2.2% compared to the original ±0.4%. TL431CP is the only active product available from Texas Instruments, making it the preferred choice for new designs requiring long-term availability. It is suitable for applications where tighter tolerance is not critical.

Q: Are all substitute parts available in the same package? A: Yes. All substitute parts use 8-DIP (0.300", 7.62mm) through-hole packaging, ensuring mechanical compatibility and direct board-level replacement without layout modifications.

Q: What tolerance options are available among substitute parts? A: Substitute parts are available in three tolerance grades: ±0.4% (TL431BCP, TL431BIP), ±1% (TL431ACP, TL431AIP), and ±2.2% (TL431CP, TL431IP). Selection depends on application precision requirements.

Q: Which substitute part has the widest operating temperature range? A: TL431BIP, TL431AIP, and TL431IP all operate from -40°C ~ 85°C, providing the widest temperature range among available substitutes. These parts are suitable for industrial and automotive applications requiring extended temperature performance.

Q: Why is TL431CP recommended for new designs? A: TL431CP is the only active product in the substitute family, manufactured by Texas Instruments. Active product status ensures continued availability and manufacturing support, making it the preferred choice for designs requiring long-term component supply.