TLV431CLPE3 Equivalent & Substitute Parts

Part Overview

The TLV431CLPE3 is a shunt voltage reference IC with adjustable output, manufactured by Texas Instruments. This component functions as a precision voltage reference in power management applications, offering adjustable output from 1.24V to 6V with ±1.5% tolerance. The part is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements. The primary reason for seeking alternatives is the discontinued status of this through-hole TO-92-3 package variant, while functionally identical active products remain available in modern surface-mount packaging.

Substiute Parts

TLV431CLPE3

Texas InstrumentsIn Stock: 5035TLV431CLPE3 Datasheet

Current PartRFQ

TLV431IDBZR

Texas InstrumentsIn Stock: 21506TLV431IDBZR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLV431CLPE3 is determined by matching the following electrical and mechanical parameters:

• Reference Type: Shunt
• Output Type: Adjustable
• Voltage - Output (Min/Fixed): 1.24V
• Voltage - Output (Max): 6V
• Current - Output: 15 mA
• Tolerance: ±1.5%
• Current - Cathode: 80 µA
• Base Product Number: TLV431

The TLV431IDBZR qualifies as a direct substitute because it maintains identical electrical specifications across all critical parameters. The primary difference is packaging format: the substitute transitions from through-hole TO-92-3 to surface-mount SOT-23-3, and extends the operating temperature range to -40°C ~ 85°C. Both parts share the same base product number (TLV431) and are manufactured by Texas Instruments.

Parameter Comparison

Engineering Selection Recommendations

The TLV431IDBZR is the recommended substitute for the obsolete TLV431CLPE3. Both parts maintain identical electrical performance across all specified parameters, ensuring functional equivalence in voltage reference applications.

Selection considerations based on provided specifications:

• Both parts are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements
• The substitute offers extended operating temperature range (-40°C ~ 85°C versus 0°C ~ 70°C), providing broader environmental compatibility
• The substitute is classified as active product status with established supply chain availability (21,400 pcs in stock versus 5,021 pcs for the obsolete part)
• Packaging transition from through-hole TO-92-3 to surface-mount SOT-23-3 requires PCB redesign and assembly process modification
• Both parts share identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications

Frequently Asked Questions (FAQ)

Q: Can TLV431IDBZR directly replace TLV431CLPE3 in existing designs?

A: Electrical substitution is direct due to identical voltage reference specifications. However, physical substitution requires PCB redesign because the parts use different mounting technologies (through-hole versus surface-mount) and package formats (TO-92-3 versus SOT-23-3).

Q: What are the key electrical parameters that define substitution compatibility?

A: Substitution is valid when the following parameters match: reference type (shunt), output type (adjustable), output voltage range (1.24V to 6V), output current (15 mA), tolerance (±1.5%), and cathode current (80 µA).

Q: Does the extended operating temperature range of TLV431IDBZR affect compatibility?

A: The extended range (-40°C ~ 85°C) is a superset of the original specification (0°C ~ 70°C). This provides enhanced capability and does not create compatibility issues for applications within the original temperature range.

Q: Are there packaging considerations for this substitution?

A: Yes. The original part uses through-hole TO-92-3 packaging for manual or wave soldering assembly. The substitute uses surface-mount SOT-23-3 packaging, requiring reflow soldering and PCB layout modifications.

Q: Do both parts meet the same compliance standards?

A: Yes. Both TLV431CLPE3 and TLV431IDBZR are ROHS3 compliant, REACH unaffected, and share identical ECCN and HTSUS classifications.