KTY236 Equivalent & Substitute Parts

Part Overview

The KTY236 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 temperature sensor operates across -50°C to 150°C. The part is currently obsolete, making equivalent substitutes necessary for ongoing production, maintenance, and design updates. Substitute parts must maintain SOT-23-3 package compatibility and comparable electrical characteristics within acceptable operating parameters.

Substiute Parts

KTY236

Infineon TechnologiesIn Stock: 1093KTY236 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 KTY236 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.

Sensor Type & Output: The KTY236 is a PTC thermistor. Substitute parts in this reference are analog voltage output temperature sensors, which operate on different physical principles but provide equivalent temperature sensing functionality in the same package footprint.

Operating Temperature Range: The KTY236 operates from -50°C to 150°C. Substitute parts must cover the application's required temperature range. Parts with narrower ranges (0°C ~ 90°C) are suitable only for applications within those limits.

Electrical Characteristics: Resistance value, tolerance, supply voltage, and output resolution are critical for circuit design. Substitutes must be evaluated against specific application requirements.

Compliance & Availability: Product status (Active vs. Obsolete), RoHS compliance, and current inventory determine practical substitution viability.

Parameter Comparison

Engineering Selection Recommendations

For Extended Temperature Range Applications (-50°C to 150°C): The KTY236's full operating range cannot be matched by any substitute in this list. LM62 series parts (LM62BIM3/NOPB, LM62BIM3X/NOPB, LM62CIM3X/NOPB) are limited to 0°C ~ 90°C. TC1047 series parts (TC1047AVNBTR, TC1047VNBTR) extend to -40°C ~ 125°C, covering most industrial applications but not the full -50°C lower limit. Application requirements must be reassessed if the complete temperature range is critical.

For Active Product Status & Long-Term Availability: LM62BIM3X/NOPB, LM62CIM3X/NOPB, TC1047AVNBTR, and TC1047VNBTR are all Active products with current inventory. LM62BIM3/NOPB is Obsolete and should be avoided for new designs.

For RoHS3 Compliance: LM62BIM3/NOPB, LM62CIM3X/NOPB, TC1047AVNBTR, and TC1047VNBTR are RoHS3 Compliant. LM62BIM3X/NOPB compliance status is not specified in the provided data.

For Supply Voltage Flexibility: LM62 series parts accept 2.7V ~ 10V supply voltage, providing broader compatibility with various power supply designs. TC1047 series parts are more restrictive: TC1047AVNBTR requires 2.5V ~ 5.5V, and TC1047VNBTR requires 2.7V ~ 4.4V.

For Analog Output Voltage Designs: LM62 series provides 15.6mV/°C resolution, offering finer output granularity. TC1047 series provides 10mV/°C resolution. Circuit design and ADC resolution requirements determine which is appropriate.

Frequently Asked Questions (FAQ)

Q: Can the KTY236 be directly replaced with any of these substitute parts? A: Direct replacement depends on application requirements. All substitutes share the SOT-23-3 package and surface-mount compatibility. However, the KTY236 is a PTC thermistor with resistance-based output, while all listed substitutes are analog voltage output sensors. Circuit redesign may be necessary to accommodate the different output type.

Q: Which substitute covers the widest temperature range? A: TC1047AVNBTR and TC1047VNBTR both operate from -40°C ~ 125°C, the widest range among substitutes. Neither reaches the KTY236's -50°C lower limit. For applications requiring -50°C operation, alternative solutions outside this list must be evaluated.

Q: Are all substitutes available in the same package? A: Yes. All substitute parts use SOT-23-3 (TO-236-3, SC-59) packaging, ensuring mechanical compatibility with existing PCB layouts designed for the KTY236.

Q: Which substitute has the best accuracy? A: LM62BIM3/NOPB and LM62BIM3X/NOPB offer ±2°C accuracy at 25°C (±2.5°C across range). TC1047AVNBTR and TC1047VNBTR also provide ±2°C at 25°C (±3°C across range). LM62CIM3X/NOPB is ±3°C at 25°C (±4°C across range).

Q: What is the difference between LM62BIM3/NOPB and LM62BIM3X/NOPB? A: Both are LM62 variants with identical electrical specifications (0°C ~ 90°C, 15.6mV/°C, ±2°C accuracy). LM62BIM3/NOPB is Obsolete; LM62BIM3X/NOPB is Active. For new designs, LM62BIM3X/NOPB is the recommended choice.

Q: Can I use TC1047 parts in applications requiring 0°C ~ 90°C operation? A: Yes. TC1047AVNBTR and TC1047VNBTR both operate within the 0°C ~ 90°C range. However, their 10mV/°C resolution is lower than LM62 series (15.6mV/°C), which may affect ADC resolution in designs with limited bit depth.

Q: What supply voltage should I use for each substitute? A: LM62 series accepts 2.7V ~ 10V. TC1047AVNBTR accepts 2.5V ~ 5.5V. TC1047VNBTR accepts 2.7V ~ 4.4V. Verify your power supply design falls within the specified range for your selected substitute.

Q: Are all substitutes RoHS compliant? A: LM62BIM3/NOPB, LM62CIM3X/NOPB, TC1047AVNBTR, and TC1047VNBTR are RoHS3 Compliant. LM62BIM3X/NOPB compliance status is not specified in available data; verify with the manufacturer if RoHS compliance is a requirement.