TL431AIP Equivalent & Substitute Parts

Part Overview

The TL431AIP is a shunt voltage reference IC manufactured by onsemi, classified as a Power Management (PMIC) component. This adjustable precision shunt regulator operates across a 2.495V to 36V output range with ±1% tolerance and 100 mA output capability. The device is currently listed as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The TL431AIP is housed in an 8-DIP package suitable for through-hole mounting applications.

Substiute Parts

TL431AIP

onsemiIn Stock: 3333TL431AIP 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

SimilarRFQ

TL431CP

Texas InstrumentsIn Stock: 42630TL431CP Datasheet

SimilarRFQ

TL431IP

onsemiIn Stock: 4351TL431IP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TL431AIP is determined by the following critical parameters:

• Reference Type: Shunt (all substitutes must maintain shunt topology)
• Output Type: Adjustable (all substitutes must support adjustable output)
• Voltage Range: 2.495V to 36V output capability (all substitutes must cover this range)
• Current - Output: 100 mA (all substitutes must support this current level)
• Package / Case: 8-DIP (0.300", 7.62mm) (all substitutes must use identical package)
• Mounting Type: Through Hole (all substitutes must support through-hole mounting)

Substitute parts are grouped based on tolerance grade and operating temperature range, as these parameters define performance boundaries within the allowed electrical and mechanical specifications. All identified substitutes maintain identical voltage range, output current, package configuration, and mounting methodology.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts listed maintain electrical and mechanical compatibility with the TL431AIP within the specified parameter boundaries. Selection should be based on the following criteria:

For Extended Temperature Range Applications (-40°C to 85°C): TL431BIP offers superior tolerance (±0.4%) while maintaining the full operating temperature range. TL431IP provides ±2.2% tolerance across the extended range. Both are onsemi products with obsolete status.

For Standard Temperature Range Applications (0°C to 70°C): TL431CP from Texas Instruments is the only active product in the substitute list, offering ongoing availability and support. TL431BCP provides tighter tolerance (±0.4%) within this temperature range. TL431ACP maintains ±1% tolerance matching the original specification.

For Compliance Considerations: All onsemi variants (TL431AIP, TL431ACP, TL431BCP, TL431BIP, TL431IP) are RoHS non-compliant with REACH Unaffected status. TL431CP from Texas Instruments has undefined MSL and unspecified RoHS status; compliance verification is required for regulated applications.

Frequently Asked Questions (FAQ)

Q: Can TL431CP substitute for TL431AIP in all applications? A: TL431CP maintains identical voltage range, output current, and 8-DIP package configuration. However, it operates only within 0°C to 70°C, compared to TL431AIP's -40°C to 85°C range. Applications requiring extended low-temperature operation must use TL431BIP or TL431IP instead.

Q: What is the difference between tolerance grades in the substitute list? A: Tolerance grades define output voltage accuracy. TL431AIP and TL431ACP specify ±1% tolerance. TL431BCP and TL431BIP offer tighter ±0.4% tolerance. TL431CP and TL431IP specify ±2.2% tolerance. Selection depends on circuit requirements for voltage regulation precision.

Q: Are all substitutes pin-compatible with TL431AIP? A: All listed substitutes use the 8-DIP (0.300", 7.62mm) package with through-hole mounting. Pin compatibility is maintained across all variants within the TL431 family.

Q: Why is TL431CP listed as active while others are obsolete? A: TL431CP from Texas Instruments remains in active production status, providing long-term availability. All onsemi variants are obsolete, indicating discontinued manufacturing. For new designs requiring ongoing supply, TL431CP is the recommended choice.

Q: Can TL431BIP replace TL431AIP in temperature-critical applications? A: Yes. TL431BIP maintains the -40°C to 85°C operating range and provides superior tolerance (±0.4% versus ±1%). It is a direct functional upgrade for temperature-critical designs, though both devices are obsolete.