KTY13-6 Equivalent & Substitute Parts

Part Overview

The KTY13-6 is an obsolete PTC thermistor manufactured by Infineon Technologies with a nominal resistance of 2 kOhms at 25°C and ±3% tolerance. Designed for surface mount applications in the TO-236-3 (SOT-23-3) package, this component operates across a wide temperature range of -50°C to 150°C. Due to its obsolete product status, equivalent substitute parts are necessary for new designs, repairs, and production continuity. The substitutes listed maintain mechanical compatibility through identical packaging while offering comparable or enhanced thermal sensing capabilities.

Substiute Parts

KTY13-6

Infineon TechnologiesIn Stock: 4019KTY13-6 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 KTY13-6 is determined by the following critical parameters:

• Package Compatibility: All substitute parts must use the TO-236-3 (SOT-23-3) surface mount package to ensure mechanical and electrical fit on existing PCBs.
• Mounting Type: Surface mount requirement is maintained across all substitutes.
• Moisture Sensitivity Level: MSL 1 (Unlimited) is preserved in all alternatives, ensuring no additional handling constraints.
• Compliance Standards: REACH Unaffected status and RoHS3 compliance are maintained where applicable.

The substitute parts are grouped into two functional categories:

1. LM62 Series (Texas Instruments / National Semiconductor): Analog output temperature sensors with 0°C ~ 90°C sensing range, 15.6mV/°C resolution, and ±2°C to ±3°C accuracy. These are direct functional replacements for applications within the 0°C ~ 90°C operating window.

2. TC1047 Series (Microchip Technology): Analog output temperature sensors with extended -40°C ~ 125°C sensing range, 10mV/°C resolution, and ±2°C to ±3°C accuracy. These provide broader temperature coverage suitable for applications requiring operation below 0°C or above 90°C.

Parameter Comparison

Engineering Selection Recommendations

For applications operating within 0°C ~ 90°C: Select from the LM62 series (LM62BIM3/NOPB, LM62BIM3X/NOPB, or LM62CIM3X/NOPB). LM62BIM3X/NOPB is preferred due to its Active product status, ensuring long-term availability and supply chain stability. All LM62 variants maintain SOT-23-3 package compatibility and MSL 1 rating.

For applications requiring extended temperature coverage (-40°C ~ 125°C): Select from the TC1047 series (TC1047AVNBTR or TC1047VNBTR). Both variants are Active products with identical package specifications and MSL 1 rating. TC1047AVNBTR supports a wider supply voltage range (2.5V ~ 5.5V) compared to TC1047VNBTR (2.7V ~ 4.4V).

Compliance Considerations: All recommended substitutes maintain REACH Unaffected status and RoHS3 compliance where specified, ensuring regulatory alignment with the original KTY13-6 component.

Frequently Asked Questions (FAQ)

Q: Can the KTY13-6 be directly replaced with any of these substitutes without circuit modification?

A: Mechanical compatibility is guaranteed through identical SOT-23-3 packaging. However, functional compatibility depends on application requirements. The KTY13-6 is a resistance-based sensor, while all substitutes are analog voltage output sensors. Circuit redesign is necessary to accommodate the different output signal type.

Q: Which substitute offers the closest temperature range coverage to the KTY13-6?

A: The TC1047 series (-40°C ~ 125°C) provides the broadest coverage, though it does not fully extend to the KTY13-6's upper limit of 150°C. For applications requiring operation above 125°C, alternative component families must be evaluated.

Q: Are all substitutes available in the same packaging options as the KTY13-6?

A: Yes. All listed substitutes use the TO-236-3 (SC-59, SOT-23-3) surface mount package, ensuring identical PCB footprint and mechanical fit.

Q: What is the significance of Active versus Obsolete product status?

A: Active products (LM62BIM3X/NOPB, LM62CIM3X/NOPB, TC1047AVNBTR, TC1047VNBTR) have guaranteed long-term availability and manufacturing support. Obsolete products (KTY13-6, LM62BIM3/NOPB) may have limited stock and no future production commitments.

Q: Do all substitutes maintain the same moisture sensitivity level as the KTY13-6?

A: Yes. All substitutes maintain MSL 1 (Unlimited), eliminating any additional moisture handling or storage constraints during assembly and deployment.

Q: How do the accuracy specifications compare across substitutes?

A: LM62 series components offer ±2°C to ±3°C accuracy depending on variant. TC1047 series components provide ±2°C to ±3°C accuracy. All substitutes meet or exceed the precision requirements typical for industrial temperature sensing applications.