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KTY82/122,215 Temperature Sensor Equivalent & Substitute Parts
Part Overview
The KTY82/122,215 is a PTC thermistor temperature sensor manufactured by NXP USA Inc., rated at 1.1 kOhms resistance at 25°C with an operating temperature range of -55°C to 150°C. The device is packaged in TO-236-3 (SOT-23-3) surface mount configuration and is ROHS3 compliant with MSL Level 1 rating.
This part is currently listed as obsolete, making equivalent and substitute parts necessary for ongoing design support, production continuity, and new application development. Substitute parts must maintain compatibility with the TO-236-3 package footprint and surface mount assembly requirements while meeting the thermal sensing specifications of the original design.
Substiute Parts
Key Parameters
| Parameter | KTY82/122,215 |
|---|---|
| Manufacturer | NXP USA Inc. |
| Part Number | KTY82/122,215 |
| Product Category | Temperature Sensors |
| Product Status | Obsolete |
| Sensor Type | PTC Thermistor |
| Resistance @ 25°C | 1.1 kOhms |
| Operating Temperature Range | -55°C ~ 150°C |
| Package / Case | TO-236-3, SC-59, SOT-23-3 |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
| MSL Rating | 1 (Unlimited) |
| REACH Status | REACH Unaffected |
Substitute Part Grouping Explanation
Substitution for the KTY82/122,215 is determined by the following critical parameters:
Package Compatibility: All substitute parts must use TO-236-3 (SOT-23-3) surface mount packaging to ensure PCB footprint compatibility and assembly process alignment.
Operating Temperature Range: The original part operates from -55°C to 150°C. Substitute parts must cover at least the application's required temperature window within this range.
Sensor Output Type: The KTY82/122,215 is a passive PTC thermistor. Substitute parts may include analog voltage output temperature sensors, which provide active signal conditioning and are functionally equivalent in thermal monitoring applications.
Regulatory Compliance: All substitute parts must maintain ROHS3 compliance and MSL Level 1 rating to meet manufacturing and environmental standards.
Electrical Characteristics: Resistance value, output resolution (mV/°C), accuracy, and supply voltage requirements must be evaluated against the specific application circuit requirements.
The substitute parts listed below are grouped into two functional categories: analog voltage output sensors (DS60R+T&R, LM60 series, TC1047 series, MCP9701T-E/TT) and alternative thermistor configurations (LM62 series). All maintain TO-236-3 packaging and surface mount compatibility.
Parameter Comparison
| Parameter | KTY82/122,215 | DS60R+T&R | LM60QIM3/NOPB | LM60QIM3X/NOPB | LM62BIM3/NOPB | LM62CIM3X/NOPB | TC1047AVNBTR | TC1047VNBTR | MCP9701T-E/TT |
|---|---|---|---|---|---|---|---|---|---|
| Manufacturer | NXP USA Inc. | Analog Devices Inc./Maxim Integrated | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Microchip Technology | Microchip Technology | Microchip Technology |
| Product Status | Obsolete | Active | Obsolete | Active | Obsolete | Active | Active | Active | Active |
| Package / Case | TO-236-3, SOT-23-3 | TO-236-3, SOT-23-3 | TO-236-3, SOT-23-3 | TO-236-3, SOT-23-3 | TO-236-3, SOT-23-3 | TO-236-3, SOT-23-3 | TO-236-3, SOT-23-3 | TO-236-3, SOT-23-3 | TO-236-3, SOT-23-3 |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Operating Temperature Range | -55°C ~ 150°C | -40°C ~ 125°C | -40°C ~ 125°C | -40°C ~ 125°C | 0°C ~ 90°C | 0°C ~ 90°C | -40°C ~ 125°C | -40°C ~ 125°C | -40°C ~ 125°C |
| Output Type | Passive Resistance | Analog Voltage | Analog Voltage | Analog Voltage | Analog Voltage | Analog Voltage | Analog Voltage | Analog Voltage | Analog Voltage |
| Resolution | N/A (Thermistor) | 6.25mV/°C | 6.25mV/°C | 6.25mV/°C | 15.6mV/°C | 15.6mV/°C | 10mV/°C | 10mV/°C | 19.5mV/°C |
| Supply Voltage | N/A (Passive) | 2.7V ~ 5.5V | 2.7V ~ 10V | 2.7V ~ 10V | 2.7V ~ 10V | 2.7V ~ 10V | 2.5V ~ 5.5V | 2.7V ~ 4.4V | 3.1V ~ 5.5V |
| Accuracy | N/A (Thermistor) | ±2°C (±3°C) | ±3°C (±4°C) | ±3°C (±4°C) | ±2°C (±2.5°C) | ±3°C (±4°C) | ±2°C (±3°C) | ±2°C (±3°C) | ±4°C (-4°C, +6°C) |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| MSL Rating | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
Engineering Selection Recommendations
Active Status Priority: For new designs and production continuity, TC1047AVNBTR, TC1047VNBTR, LM60QIM3X/NOPB, LM62CIM3X/NOPB, and MCP9701T-E/TT are recommended as primary substitutes due to active product status and ongoing manufacturer support.
Temperature Range Considerations: The KTY82/122,215 operates to 150°C, exceeding most substitute parts' upper limits of 125°C. For applications requiring operation above 125°C, design circuit modifications or alternative sensor architectures may be necessary. For applications within -40°C to 125°C, all listed substitutes are suitable.
Output Type Transition: Substitution from a passive PTC thermistor to an active analog voltage output sensor requires circuit redesign. The application must accommodate the sensor's supply voltage requirements and analog output signal conditioning. This transition simplifies signal processing and improves measurement accuracy.
Compliance Alignment: All substitute parts maintain ROHS3 compliance and MSL Level 1 rating, ensuring compatibility with standard manufacturing processes and environmental regulations.
Inventory Availability: TC1047AVNBTR (38,200 units), LM60QIM3X/NOPB (18,294 units), and DS60R+T&R (15,519 units) offer the highest stock levels for immediate procurement.
Frequently Asked Questions (FAQ)
Q: Can the KTY82/122,215 be directly replaced with a pin-compatible substitute?
A: All listed substitute parts share the TO-236-3 (SOT-23-3) package footprint, enabling direct PCB placement compatibility. However, circuit redesign is required when transitioning from the passive PTC thermistor to active analog voltage output sensors, as the electrical interface differs fundamentally.
Q: Which substitute part best matches the original operating temperature range?
A: The KTY82/122,215 operates from -55°C to 150°C. No substitute part covers this full range. TC1047AVNBTR and TC1047VNBTR extend to -40°C to 125°C, covering the most common industrial temperature window. For applications requiring operation above 125°C, alternative sensor technologies must be evaluated.
Q: What is the difference between LM60QIM3/NOPB and LM60QIM3X/NOPB?
A: Both parts are functionally identical with identical electrical specifications. LM60QIM3/NOPB is obsolete, while LM60QIM3X/NOPB is active. LM60QIM3X/NOPB is recommended for new designs. The packaging differs: LM60QIM3/NOPB is supplied in Cut Tape & Digi-Reel, while LM60QIM3X/NOPB is supplied in Tape & Reel.
Q: Are the LM62 series parts suitable for applications requiring -55°C operation?
A: No. The LM62BIM3/NOPB and LM62CIM3X/NOPB operate from 0°C to 90°C only. These parts are suitable only for applications within this narrower temperature window. For extended low-temperature operation, TC1047 or LM60 series parts are required.
Q: What supply voltage should be used for TC1047VNBTR?
A: TC1047VNBTR requires 2.7V to 4.4V supply voltage. This narrower range compared to TC1047AVNBTR (2.5V to 5.5V) must be considered in power supply design. Ensure the application's power rail remains within this specification.
Q: Can MCP9701T-E/TT replace the KTY82/122,215 in all applications?
A: MCP9701T-E/TT operates from -10°C to 125°C with sensing range -40°C to 125°C. It is suitable for applications not requiring operation below -10°C. The part offers the highest resolution (19.5mV/°C) among substitutes, providing improved measurement sensitivity. Supply voltage range is 3.1V to 5.5V.
Q: What is the significance of the automotive grade qualification on LM60QIM3/NOPB and LM60QIM3X/NOPB?
A: Both parts carry AEC-Q100 automotive qualification, indicating compliance with automotive reliability and quality standards. This qualification is relevant only for automotive applications. Non-automotive applications may use any listed substitute meeting the electrical and temperature specifications.
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