KTY13-7 Equivalent & Substitute Parts Reference

Part Overview

The KTY13-7 is a PTC thermistor with a resistance of 2.03 kOhms at 25°C, manufactured by Infineon Technologies in a SOT-23-3 surface mount package. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity. The KTY13-7 operates across a wide temperature range of -50°C to 150°C with ±3% resistance tolerance and unlimited moisture sensitivity rating (MSL 1).

Substiute Parts

KTY13-7

Infineon TechnologiesIn Stock: 3240KTY13-7 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 KTY13-7 is determined by the following critical parameters:

• Package Compatibility: All substitute parts must use SOT-23-3 surface mount packaging to ensure mechanical and electrical compatibility with existing PCB layouts
• Operating Temperature Range: Substitute parts must support the application's temperature requirements within the -50°C to 150°C envelope or a subset thereof
• Sensor Type and Output: The KTY13-7 functions as a passive PTC thermistor; substitutes include both passive thermistors and active analog temperature sensors with voltage output
• Mounting Configuration: Surface mount technology is mandatory for all alternatives

The identified substitute parts fall into two functional categories: analog temperature sensors (LM62 series from Texas Instruments and National Semiconductor) and analog temperature sensors with extended range (TC1047 series from Microchip Technology). While these substitutes differ in output type and temperature range from the original PTC thermistor, they provide equivalent temperature sensing functionality in the same physical package.

Parameter Comparison

Engineering Selection Recommendations

For applications requiring 0°C to 90°C temperature sensing: LM62BIM3X/NOPB is the preferred active substitute. This part maintains active product status with ROHS3 compliance and REACH unaffected certification. It provides analog voltage output with 15.6mV/°C resolution and ±2°C accuracy at 25°C. Supply voltage range of 2.7V to 10V accommodates most embedded system requirements.

For applications requiring extended temperature range (-40°C to 125°C): TC1047AVNBTR or TC1047VNBTR from Microchip Technology are suitable alternatives. Both maintain active product status with ROHS3 compliance and REACH unaffected certification. TC1047AVNBTR supports 2.5V to 5.5V supply voltage, while TC1047VNBTR operates at 2.7V to 4.4V. Both deliver 10mV/°C resolution with ±2°C accuracy at 25°C.

For applications with strict compliance requirements: All recommended substitutes carry ROHS3 compliance and REACH unaffected status, matching the original KTY13-7 environmental certifications. All parts maintain MSL 1 (unlimited) moisture sensitivity rating.

Frequently Asked Questions (FAQ)

Q: Can the KTY13-7 be directly replaced with LM62 series sensors? A: Mechanical compatibility is confirmed through identical SOT-23-3 packaging. However, functional replacement requires circuit redesign. The KTY13-7 is a passive PTC thermistor requiring resistance measurement, while LM62 series are active analog temperature sensors providing voltage output. Signal conditioning and measurement circuitry must be adapted accordingly.

Q: What is the temperature range limitation when substituting with LM62 series? A: LM62 series sensors operate within 0°C to 90°C, which is narrower than the KTY13-7 range of -50°C to 150°C. Applications requiring operation below 0°C or above 90°C must use TC1047 series alternatives with -40°C to 125°C range.

Q: Are TC1047 series sensors suitable for all KTY13-7 applications? A: TC1047 series provide extended temperature range (-40°C to 125°C) and active product status. However, the upper operating limit of 125°C does not reach the KTY13-7 maximum of 150°C. Applications requiring operation above 125°C cannot use TC1047 substitutes.

Q: What supply voltage should be used with substitute parts? A: LM62 series require 2.7V to 10V supply. TC1047AVNBTR requires 2.5V to 5.5V, while TC1047VNBTR requires 2.7V to 4.4V. Verify supply voltage compatibility with your system design before implementation.

Q: Do all substitute parts maintain the same compliance certifications as KTY13-7? A: All recommended substitutes carry REACH unaffected status matching the original part. LM62BIM3X/NOPB, LM62CIM3X/NOPB, TC1047AVNBTR, and TC1047VNBTR all maintain ROHS3 compliance. All parts retain MSL 1 (unlimited) moisture sensitivity rating.

Q: What is the inventory status of substitute parts? A: LM62BIM3X/NOPB has 2631 pieces in stock with active product status. LM62CIM3X/NOPB has 702 pieces in stock with active product status. TC1047AVNBTR has 38200 pieces in stock with active product status. TC1047VNBTR has 6400 pieces in stock with active product status.