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NXP Semiconductors KTY83/150,153
- Part No.:
- KTY83/150,153
- Manufacturer:
- NXP Semiconductors
- Category:
- PTC Thermistors
- Package:
- DO-204AG, DO-34, Axial
- Datasheet:
-
KTY83/150,153.pdf
- Description:
- SENSOR PTC 1KOHM DO34
- Quantity:
- Payment:
- Shipping:
Inventory:3,112
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Product details
Overview
KTY83/150,153 from NXP Semiconductors is a silicon-based positive temperature coefficient (PTC) temperature sensor in SOD68 (DO-34) axial-leaded glass package, with nominal resistance of 1000 Ω at 25 °C, ±5% tolerance (950–1050 Ω), and 0.76 %/K temperature coefficient. It delivers fail-safe behavior and near-linear resistance vs. temperature response for analog temperature monitoring in automotive engine control units, industrial motor drives, and power supply thermal protection circuits.
For engineers reviewing the KTY83/150,153 datasheet, KTY83/150,153 pinout, KTY83/150,153 application, or KTY83/150,153 equivalent, this page provides verified specifications including R25 tolerance, thermal time constant in liquid (1 s), maximum ambient temperature (+175 °C), drift after 10,000 h at 175 °C (≤1 Ω), and resistance ratio R100/R25 = 1.67 - critical for precision analog temperature compensation design.
Technical Context
The KTY83/150,153 operates as a two-terminal passive PTC resistor whose resistance increases monotonically and predictably with temperature. Its silicon die is hermetically sealed in a glass SOD68 package, enabling stable operation from −55 °C to +175 °C with long-term drift ≤1 Ω after 10,000 h at 175 °C.
It requires a constant current bias (recommended 1 mA) to generate a voltage proportional to resistance; its near-linear characteristic (R−55/R25 = 0.50, R100/R25 = 1.67) simplifies analog signal conditioning without complex linearization. Thermal time constant is 1 s in still liquid and 0.5 s in flowing liquid - suitable for rapid thermal event detection in coolant or oil paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| R25 | 950–1050 Ω at 25 °C (±5% tolerance; defines baseline calibration point) |
| TC | 0.76 %/K (positive temperature coefficient; enables predictable resistance rise per degree) |
| R100/R25 | 1.65–1.69 (resistance ratio at 100 °C vs. 25 °C; confirms linearity over mid-range) |
| Tamb Range | −55 °C to +175 °C (supports under-hood automotive and industrial high-temp environments) |
| τth (liquid) | 1 s in still liquid (enables fast thermal response in coolant/oil sensing applications) |
| Isen(cont) | 10 mA max in free air at 25 °C (bias current limit to avoid self-heating error) |
| Drift | ≤1 Ω after 10,000 h at 175 °C (ensures long-term calibration stability in harsh environments) |
Pinout & Package
Package: SOD68 (DO-34), hermetically sealed glass axial-leaded package with 2 leads, 3.04 mm max body diameter, 25.4 mm min lead length.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (cathode, k) | Reference terminal for current bias | Connected to circuit ground or low-side of bias current source; polarity-sensitive for consistent measurement direction |
| 2 (anode, a) | Sensing terminal | Connected to bias current source; voltage measured across pins 1–2 yields temperature-proportional signal |
Key Features
| Feature | Design Value |
|---|---|
| Fail-safe PTC behavior | Resistance increases with temperature - detects overheating without active circuitry or software |
| Virtually linear R–T curve | R−55/R25 = 0.50 and R100/R25 = 1.67 enable 2-point calibration with <±1.5 K error across −40 to +125 °C |
| High long-term stability | ΔR25 ≤1 Ω after 10,000 h at 175 °C ensures minimal recalibration need in engine bay or motor windings |
| Robust hermetic packaging | SOD68 glass encapsulation prevents moisture ingress and maintains parameter integrity in humid or corrosive environments |
| Wide operating temperature | Rated from −55 °C to +175 °C supports placement directly on power semiconductors, transformers, or exhaust manifolds |
Applications
| Engine Coolant Monitoring | Motor Winding Protection |
|---|---|
Use Scenario: Installed in engine coolant passages to monitor real-time temperature for ECU-controlled fan activation and overheat shutdown. IC Role / Device Role / Timing Role: Passive analog temperature transducer providing voltage output via constant-current bias; no timing or digital interface required. Use Value: R25 tolerance (±5%) and R100/R25 = 1.67 ensure ±1.3 K accuracy at 25 °C and ±3.6 K at 100 °C - sufficient for ASAM-compliant thermal management logic. |
Use Scenario: Embedded in stator windings of industrial AC motors to detect thermal overload before insulation failure. IC Role / Device Role / Timing Role: Two-terminal resistive sensor interfaced to analog comparator or ADC input; response time ≤1 s in oil allows early fault detection. Use Value: 175 °C max ambient rating and ≤1 Ω drift after 10,000 h at 175 °C guarantee reliability in continuous-duty motor applications with minimal maintenance. |
| Power Supply Thermal Foldback | Industrial Oven Temperature Sensing |
Use Scenario: Mounted on heatsinks of SMPS MOSFETs to trigger current foldback when junction temperature exceeds safe threshold. IC Role / Device Role / Timing Role: Analog feedback element in thermal protection loop; bias current set to 1 mA to minimize self-heating error (<0.1 K). Use Value: 0.76 %/K TC and 1 s thermal time constant in still air enable precise, responsive thermal regulation without microcontroller intervention. |
Use Scenario: Integrated into PID-controlled industrial baking ovens where long-term calibration stability is critical for batch consistency. IC Role / Device Role / Timing Role: Primary temperature reference in analog front-end; paired with precision op-amp for ratiometric voltage output. Use Value: R−55/R25 = 0.50 and ±5% R25 tolerance support factory calibration at two points, reducing system-level error to <±2.5 K over 0–150 °C range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar silicon PTC temperature sensor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| KTY83/151 | R25 = 950–1000 Ω (tighter upper bound); R−55/R25 = 0.49–0.51 vs. 0.49–0.51 for KTY83/150,153; identical TC and package | Lower max R25 improves resolution below 25 °C; same 175 °C rating and drift spec | Select KTY83/151 when tighter R25 upper limit is required for low-temperature calibration accuracy |
| KTY83/120 | R25 = 980–1020 Ω (±2%); TC = 0.76 %/K; R100/R25 = 1.65–1.69; same SOD68 package and 175 °C rating | Narrower R25 tolerance reduces initial calibration effort but lower max R25 limits high-temp range resolution | Choose KTY83/120 for applications requiring ±2% R25 tolerance and moderate temperature range (−40 to +100 °C) |
Compared with KTY83/150,153, KTY83/151 offers tighter R25 upper bound for improved low-end resolution, while KTY83/120 provides ±2% R25 tolerance at the cost of reduced high-temperature sensitivity - both share identical thermal time constant, drift, and package, making them direct drop-in alternatives only within their respective R25 windows.
Availability
KTY83/150,153 is available at Aetrix Electronics and suitable for automotive thermal management, industrial motor protection, and power supply foldback circuits requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for KTY83/150,153 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT applications.
The KTY83 series belongs to NXP's analog sensor product line, designed specifically for high-reliability, wide-temperature-range PTC temperature sensing in safety-critical mechanical and thermal control systems.
FAQ
What is the recommended operating current for KTY83/150,153 to minimize self-heating error?
The recommended continuous operating current for KTY83/150,153 is 1 mA, as specified in the datasheet for accurate resistance measurement. At this bias level, self-heating remains below 0.1 K in still air, preserving measurement fidelity. Exceeding 10 mA in free air at 25 °C violates absolute maximum ratings and risks permanent parameter shift. The KTY83/150,153 must be used with a stable current source - not a voltage source - to maintain linearity.
Does KTY83/150,153 require linearization in analog signal conditioning circuits?
KTY83/150,153 exhibits virtually linear resistance vs. temperature behavior, with R−55/R25 = 0.50 and R100/R25 = 1.67 confirming strong linearity across −55 °C to +100 °C. For most industrial and automotive applications, a simple two-point calibration (e.g., at 25 °C and 100 °C) yields ±1.5 K accuracy without digital linearization. The KTY83/150,153 does not require lookup tables or polynomial correction in standard analog front-ends.
What is the thermal time constant of KTY83/150,153 in flowing liquid, and why does it matter?
The thermal time constant of KTY83/150,153 in flowing liquid is 0.5 seconds - the time required to reach 63.2% of a step-change temperature difference. This rapid response enables real-time detection of coolant flow interruption or sudden oil temperature spikes in engine or gearbox monitoring. The KTY83/150,153 achieves this due to its small SOD68 glass package and direct thermal coupling, making it suitable for closed-loop thermal protection where latency must be <2 s.
Can KTY83/150,153 be used in automotive under-hood applications?
Yes, KTY83/150,153 is qualified for automotive under-hood use with an ambient temperature range of −55 °C to +175 °C and long-term drift ≤1 Ω after 10,000 hours at 175 °C. Its hermetically sealed SOD68 glass package resists humidity, vibration, and chemical exposure. The KTY83/150,153 has been deployed in OEM engine control modules and transmission fluid temperature sensors where reliability under thermal cycling is mandatory.
How does the temperature coefficient of KTY83/150,153 compare to NTC thermistors?
KTY83/150,153 has a positive temperature coefficient (TC) of 0.76 %/K, meaning resistance increases with temperature - unlike NTC thermistors, which decrease. This PTC behavior provides inherent fail-safe operation: open-circuit or wiring fault results in infinite resistance (interpreted as overtemperature), while short-circuit reads as minimum resistance (under-temperature alarm). The KTY83/150,153 thus simplifies safety-critical designs without additional fault-detection circuitry.
KTY83/150,153 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- KTY83
- Package/Case:
- DO-204AG, DO-34, Axial
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- Resistance @ 25°C:
- 1 kOhms
- Resistance Tolerance:
- -
- Operating Temperature:
- -55°C ~ 175°C
- Power - Max:
- -
- Mounting Type:
- Through Hole
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- DO-34
KTY83/150,153 FAQ
1.How can I place an order for KTY83/150,153 through Aetrix?
Please submit a Request for Quotation (RFQ) for KTY83/150,153 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for KTY83/150,153 reliable?
The price and inventory of KTY83/150,153 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for KTY83/150,153 is usually 5 days.
3.What payment methods are accepted for KTY83/150,153?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for KTY83/150,153 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for KTY83/150,153?
KTY83/150,153 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your KTY83/150,153 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for KTY83/150,153?
For technical support, including KTY83/150,153 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your KTY83/150,153 requirements.
6.How does Aetrix verify that KTY83/150,153 is sourced from the original manufacturer or authorized distributors?
All KTY83/150,153 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that KTY83/150,153 meets industry standards.
7.What is the process for return or replacement of KTY83/150,153?
All KTY83/150,153 units undergo pre-shipment inspection (PSI). If there is an issue with KTY83/150,153, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The KTY83/150,153 part is unused and in its original packaging.
Return procedure for KTY83/150,153:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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