TL431KLP-BP Equivalent & Substitute Parts

Part Overview

The TL431KLP-BP is a shunt voltage reference IC manufactured by Micro Commercial Co, designed for precision voltage regulation and reference applications. This device operates across a 2.5V to 36V output range with 100 mA output capability in a TO-92 through-hole package.

The TL431KLP-BP is classified as obsolete. Identifying suitable substitute components is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production requirements for applications utilizing this reference IC.

Substiute Parts

TL431KLP-BP

Micro Commercial CoIn Stock: 1249TL431KLP-BP Datasheet

Current PartRFQ

TL431BILPRAG

onsemiIn Stock: 12733TL431BILPRAG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TL431KLP-BP is determined by the following critical parameters:

Electrical Compatibility Requirements:

• Reference type must be shunt
• Output voltage range: minimum 2.5V, maximum 36V
• Output current capability: 100 mA
• Cathode current: 1 mA
• Operating temperature range: -40°C to 85°C

Mechanical Compatibility Requirements:

• Package type: TO-92-3 (TO-226AA)
• Mounting type: Through hole

Compliance Requirements:

• RoHS compliance status
• ECCN and HTSUS classifications

The TL431BILPRAG from onsemi meets all electrical and mechanical compatibility criteria. This substitute maintains identical output current, cathode current, voltage range, and operating temperature specifications while offering enhanced performance characteristics in an active product status.

Parameter Comparison

Engineering Selection Recommendations

The TL431BILPRAG is a direct electrical and mechanical substitute for the TL431KLP-BP. Both devices share identical output current (100 mA), cathode current (1 mA), voltage range (2.5V to 36V), and operating temperature specifications (-40°C to 85°C). Both are packaged in TO-92-3 through-hole configuration.

The TL431BILPRAG offers the advantage of active product status, ensuring continued availability and manufacturing support. The substitute provides ROHS3 compliance, which exceeds the RoHS compliance of the original part. Both components carry identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications, supporting equivalent regulatory and export compliance.

The TL431BILPRAG includes specified tolerance (±0.4%) and temperature coefficient (50ppm/°C typical) characteristics, providing enhanced performance documentation compared to the original part specification.

Frequently Asked Questions (FAQ)

Q: Can the TL431BILPRAG directly replace the TL431KLP-BP in existing designs?

A: Yes. Both devices are shunt voltage reference ICs with identical electrical specifications: 100 mA output current, 1 mA cathode current, 2.5V to 36V output range, and -40°C to 85°C operating temperature. Both use TO-92-3 through-hole packaging. No circuit modifications are required.

Q: What is the difference between "Programmable" and "Adjustable" output types?

A: Both terms describe voltage reference ICs where output voltage can be set using external resistor networks. The terminology difference reflects manufacturer documentation conventions; the functional capability and electrical performance are equivalent for substitution purposes.

Q: Are there any compliance differences between the two parts?

A: Both parts carry EAR99 ECCN and 8542.39.0001 HTSUS classifications. The TL431BILPRAG provides ROHS3 compliance versus RoHS compliance for the original part. ROHS3 represents an updated compliance standard and does not create incompatibility.

Q: What is the significance of the temperature coefficient specification?

A: The TL431BILPRAG specifies 50ppm/°C typical temperature coefficient, indicating voltage reference stability across temperature variations. The original part does not provide this specification. This additional specification in the substitute represents enhanced documentation rather than a functional difference.

Q: Does the "Formed Leads" designation in the TL431BILPRAG package affect compatibility?

A: No. Formed leads refer to the physical lead configuration during manufacturing and do not affect electrical compatibility or through-hole mounting compatibility. Both parts use standard TO-92-3 lead spacing and hole patterns.

Q: Why is the TL431KLP-BP classified as obsolete?

A: Obsolete status indicates the part is no longer manufactured by the original supplier. The TL431BILPRAG, with active product status, ensures continued supply chain access and manufacturing support for applications requiring this reference IC function.