KT130 PTC Thermistor Equivalent & Substitute Parts

Part Overview

The KT130 is a PTC thermistor manufactured by Infineon Technologies with a nominal resistance of 1 kOhms at 25°C and ±3% tolerance. Packaged in SOT-23-3 (TO-236-3, SC-59), this surface-mount component operates across -50°C to 150°C. The product is currently obsolete, making equivalent substitutes necessary for ongoing design requirements and component sourcing.

Substiute Parts

KT130

Infineon TechnologiesIn Stock: 3166KT130 Datasheet

Current PartRFQ

LM62BIM3/NOPB

Texas InstrumentsIn Stock: 1485LM62BIM3/NOPB Datasheet

MFR RecommendedRFQ

LM62BIM3X/NOPB

National SemiconductorIn Stock: 2665LM62BIM3X/NOPB Datasheet

MFR RecommendedRFQ

LM62CIM3X/NOPB

Texas InstrumentsIn Stock: 738LM62CIM3X/NOPB Datasheet

MFR RecommendedRFQ

TC1047AVNBTR

Microchip TechnologyIn Stock: 38220TC1047AVNBTR Datasheet

MFR RecommendedRFQ

TC1047VNBTR

Microchip TechnologyIn Stock: 6507TC1047VNBTR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the KT130 is determined by the following critical parameters:

Package Compatibility: All substitute parts must use SOT-23-3 (TO-236-3, SC-59) surface-mount packaging to ensure mechanical and electrical compatibility with existing PCB layouts.

Functional Category: Substitute parts must be temperature sensors with analog output characteristics, maintaining the thermal sensing functionality of the original component.

Operating Temperature Range: The KT130 operates from -50°C to 150°C. Substitute parts with narrower temperature ranges (such as 0°C ~ 90°C) are acceptable for applications operating within those bounds, while parts with extended ranges (-40°C ~ 125°C) provide broader coverage.

Electrical Interface: All substitutes provide analog voltage output, compatible with the KT130's sensing mechanism.

Compliance & Availability: Product status (Active vs. Obsolete) and inventory levels determine practical substitution viability.

Parameter Comparison

Engineering Selection Recommendations

For applications requiring extended temperature coverage (-50°C to 150°C): The KT130's full operating range cannot be fully matched by the listed substitutes. The TC1047AVNBTR and TC1047VNBTR provide the broadest alternative range (-40°C ~ 125°C), though the lower limit is -40°C rather than -50°C. These Microchip parts are Active products with substantial inventory availability.

For applications operating within 0°C ~ 90°C: The LM62 series (LM62BIM3/NOPB, LM62BIM3X/NOPB, LM62CIM3X/NOPB) are direct functional equivalents. LM62BIM3X/NOPB and LM62CIM3X/NOPB are Active products, ensuring long-term availability and support.

For new designs: TC1047AVNBTR is recommended due to Active product status, highest inventory level (38200 Pcs), and extended temperature range coverage. All substitute parts maintain SOT-23-3 packaging compatibility and ROHS3 compliance.

Compliance considerations: All substitute parts are REACH Unaffected and classified as EAR99, matching the regulatory profile of the original KT130.

Frequently Asked Questions (FAQ)

Q: Can the LM62 series directly replace the KT130 in all applications? A: The LM62 series operates within 0°C ~ 90°C, which is narrower than the KT130's -50°C ~ 150°C range. Substitution is valid only for applications operating within the 0°C ~ 90°C window.

Q: What is the key difference between TC1047AVNBTR and TC1047VNBTR? A: Both parts share identical temperature range (-40°C ~ 125°C), accuracy (±2°C to ±3°C), and SOT-23-3 packaging. The primary difference is supply voltage: TC1047AVNBTR operates at 2.5V ~ 5.5V, while TC1047VNBTR operates at 2.7V ~ 4.4V. Select based on your circuit's supply voltage specifications.

Q: Are all substitute parts available in the same packaging? A: Yes. All listed substitutes use SOT-23-3 (TO-236-3, SC-59) surface-mount packaging, ensuring direct PCB layout compatibility with the KT130.

Q: Which substitute has the best long-term availability? A: TC1047AVNBTR (Microchip Technology) is an Active product with 38200 Pcs in stock, providing the strongest availability assurance for ongoing production requirements.

Q: Do the substitute parts require circuit redesign? A: The LM62 and TC1047 series output analog voltage rather than resistance. Circuit redesign may be necessary if your application directly measures resistance. Verify your signal conditioning and measurement methodology before substitution.