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NXP Semiconductors KTY83/122,113
- Part No.:
- KTY83/122,113
- Manufacturer:
- NXP Semiconductors
- Category:
- PTC Thermistors
- Package:
- DO-204AG, DO-34, Axial
- Datasheet:
-
KTY83/122,113.pdf
- Description:
- SENSOR PTC 1.01KOHM DO34
- Quantity:
- Payment:
- Shipping:
Inventory:2,534
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Product details
Overview
KTY83/122,113 from NXP Semiconductors is a silicon-based positive temperature coefficient (PTC) temperature sensor in SOD68 (DO-34) axial-leaded glass package, with nominal resistance R25 = 1000–1020 Ω at 25 °C and temperature coefficient TC = 0.76 %/K. It delivers fail-safe behavior, long-term stability, and virtually linear resistance vs. temperature response for analog temperature sensing in industrial control loops.
For engineers reviewing the KTY83/122,113 datasheet, KTY83/122,113 pinout, KTY83/122,113 application, or KTY83/122,113 equivalent, key selection criteria include its ±1.31 K max temperature error at 25 °C, 1 mA recommended operating current, −55 to +175 °C ambient range, and SOD68 mechanical compatibility with legacy DO-34 PCB footprints.
Technical Context
The KTY83/122,113 operates as a two-terminal passive PTC resistor whose resistance increases monotonically and predictably with temperature. Its behavior is defined by R−55/R25 = 0.49–0.51 and R100/R25 = 1.65–1.69, enabling direct analog voltage division without active compensation.
Thermal time constant is 20 s in still air, 1 s in still liquid, and 0.5 s in flowing liquid - confirming suitability for both slow ambient monitoring and rapid fluid temperature tracking. Maximum continuous sensor current is 10 mA at 25 °C, derating to 2 mA at 175 °C per IEC 60134 limiting values.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| R25 | 1000–1020 Ω at 25 °C, 1 mA bias - sets baseline gain and resolution in voltage-divider circuits |
| TC | 0.76 %/K - enables predictable resistance change of ~7.6 Ω/K near 25 °C for analog signal conditioning |
| R100/R25 | 1.65–1.69 - defines resistance ratio across 75 K span, supporting calibration-free linearization over 0–100 °C |
| ∆T error | ±1.31 K at 25 °C - specifies worst-case deviation from ideal curve, critical for closed-loop thermal setpoint accuracy |
| Tamb range | −55 to +175 °C - supports operation in automotive under-hood, industrial motor windings, and power supply thermal protection |
| τth (liquid) | 0.5–1 s - ensures sub-second response in coolant/oil flow sensing, enabling real-time thermal feedback |
| Isen(cont) | 10 mA max at 25 °C - limits self-heating to <0.1 K at 1 mA, preserving measurement fidelity |
Pinout & Package
SOD68 (DO-34) hermetically sealed glass axial-leaded package, 3.04 mm max diameter, 25.4 mm min lead length, 0.55 mm max lead diameter.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (k) | Connected to internal PTC silicon junction cathode; polarity-sensitive in bias networks |
| 2 | Anode (a) | Connected to internal PTC silicon junction anode; forms bidirectional resistive element with Pin 1 |
Key Features
| Feature | Design Value |
|---|---|
| Fail-safe PTC behavior | Resistance increases with temperature - prevents undetected open-circuit failure in safety-critical thermal shutdown paths |
| Virtually linear R-T curve | Max ±1.31 K error at 25 °C and ±3.24 K at 90 °C - reduces need for microcontroller-based lookup tables or polynomial correction |
| Long-term stability | ≤1 Ω drift after 10,000 h at 175 °C - ensures calibration retention in high-reliability industrial equipment |
| High-temperature rating | Rated to +175 °C ambient - enables direct mounting on power MOSFET heatsinks or transformer windings |
| Hermetic SOD68 package | DO-34-compatible glass body - provides moisture immunity and mechanical robustness in harsh environments |
Applications
| Motor Winding Protection | Power Supply Thermal Monitoring |
|---|---|
Use Scenario: Embedded in stator windings of industrial AC motors to detect overheating before insulation breakdown. IC Role / Device Role / Timing Role: Passive analog temperature transducer providing resistance-proportional signal to comparator or ADC input. Use Value: Enables Class H insulation compliance (180 °C) with margin, using only 1 mA bias to avoid self-heating errors. |
Use Scenario: Mounted on DC-DC converter inductor core to monitor thermal derating during sustained load conditions. IC Role / Device Role / Timing Role: Two-terminal PTC element in voltage divider feeding microcontroller ADC channel. Use Value: Delivers ±1.45 K accuracy at 60 °C, allowing precise thermal foldback without external calibration. |
| Automotive Coolant Sensing | Industrial Oven Temperature Control |
Use Scenario: Immersed in engine coolant loop to provide primary temperature feedback for ECU fan control logic. IC Role / Device Role / Timing Role: Direct-resistance sensor interfaced via simple current source and op-amp buffer. Use Value: 0.5 s thermal time constant in flowing liquid ensures real-time response to coolant flow changes. |
Use Scenario: Mounted on heating element bracket inside convection oven to regulate setpoint accuracy within ±2 K. IC Role / Device Role / Timing Role: Analog front-end sensor element in PID controller feedback path. Use Value: R−55/R25 = 0.49–0.51 and R100/R25 = 1.65–1.69 support single-point calibration at 25 °C and 100 °C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PTC temperature sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| KTY83/121 | R25 = 980–1000 Ω; R100/R25 = 1.65–1.69; same TC and package | Lower baseline resistance shifts voltage-divider output range downward by ~20 Ω at 25 °C | Select when existing circuit bias network requires tighter low-end resistance tolerance |
| KTY83/150 | R25 = 950–1050 Ω; wider initial tolerance; higher max temperature error (±6.55 K at 25 °C) | Designed for cost-sensitive consumer appliances where ±7 K accuracy is acceptable | Choose only if design tolerates reduced precision and broader R25 spread |
Compared with KTY83/122,113, KTY83/121 offers tighter R25 matching for precision analog scaling, while KTY83/150 trades accuracy for broader R25 tolerance and lower unit cost - neither is pin-compatible drop-in replacement but all share identical SOD68 footprint and bias requirements.
Availability
KTY83/122,113 is available at Aetrix Electronics and suitable for motor winding protection, power supply thermal monitoring, and automotive coolant sensing requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for KTY83/122,113 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 portfolio, designed specifically for high-reliability, wide-temperature-range PTC-based temperature measurement in safety-critical and thermally demanding systems.
FAQ
What is the maximum operating temperature for KTY83/122,113?
KTY83/122,113 is rated for ambient temperatures from −55 °C to +175 °C per IEC 60134 limiting values. At 175 °C, continuous sensor current must be limited to 2 mA to prevent thermal runaway or accelerated aging. The device maintains specified R−55/R25 and R100/R25 ratios across this full range, making KTY83/122,113 suitable for direct attachment to high-temperature components like power inductors or motor windings.
How does KTY83/122,113 differ from thermistors or RTDs?
KTY83/122,113 is a silicon PTC sensor with near-linear resistance vs. temperature behavior (±1.31 K error at 25 °C), unlike NTC thermistors which exhibit exponential curves requiring complex linearization. Compared to platinum RTDs, KTY83/122,113 offers lower cost, smaller SOD68 package, and faster thermal response (0.5 s in flowing liquid), though with lower absolute accuracy than Class A Pt100 sensors. Its fail-safe PTC nature also provides inherent safety advantages over NTCs in overtemperature detection.
What is the recommended bias current for KTY83/122,113?
The recommended continuous operating current for KTY83/122,113 is 1 mA, as specified in the datasheet for characterization and minimal self-heating (<0.1 K error). This value ensures stable R25 measurement and preserves long-term drift performance. While the absolute maximum is 10 mA at 25 °C, exceeding 1 mA increases self-heating nonlinearly - for example, at 5 mA, self-heating may exceed 2.5 K, degrading accuracy beyond published ∆T specs. Always use KTY83/122,113 with constant-current drive or high-impedance voltage divider.
Can KTY83/122,113 be used in liquid immersion applications?
Yes, KTY83/122,113 is explicitly characterized for use in liquid media, with thermal time constant of 1 s in still liquid and 0.5 s in flowing liquid. Its hermetically sealed SOD68 glass package provides full moisture and chemical resistance, making it suitable for coolant, oil, and food-grade liquid temperature monitoring. Resistance values in Tables 8 and 9 are measured "in liquid", confirming validated performance under immersion - no conformal coating or additional encapsulation is required for KTY83/122,113 in such environments.
What marking code identifies KTY83/122,113 on the device body?
KTY83/122,113 is marked with code "KT83E" per Table 4 of the NXP datasheet. This laser-etched or printed identifier appears on the glass body of the SOD68 package and is the only factory-assigned marking for traceability and visual verification. No date codes, lot numbers, or revision indicators are included in the standard marking - full traceability requires batch documentation from Aetrix Electronics' certified sourcing records for KTY83/122,113.
KTY83/122,113 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- KTY83
- Package/Case:
- DO-204AG, DO-34, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Resistance @ 25°C:
- 1.01 kOhms
- Resistance Tolerance:
- -
- Operating Temperature:
- -55°C ~ 175°C
- Power - Max:
- -
- Mounting Type:
- Through Hole
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- DO-34
KTY83/122,113 FAQ
1.How can I place an order for KTY83/122,113 through Aetrix?
Please submit a Request for Quotation (RFQ) for KTY83/122,113 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 KTY83/122,113 reliable?
The price and inventory of KTY83/122,113 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for KTY83/122,113 is usually 5 days.
3.What payment methods are accepted for KTY83/122,113?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for KTY83/122,113 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for KTY83/122,113?
KTY83/122,113 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your KTY83/122,113 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 KTY83/122,113?
For technical support, including KTY83/122,113 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your KTY83/122,113 requirements.
6.How does Aetrix verify that KTY83/122,113 is sourced from the original manufacturer or authorized distributors?
All KTY83/122,113 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 KTY83/122,113 meets industry standards.
7.What is the process for return or replacement of KTY83/122,113?
All KTY83/122,113 units undergo pre-shipment inspection (PSI). If there is an issue with KTY83/122,113, 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 KTY83/122,113 part is unused and in its original packaging.
Return procedure for KTY83/122,113:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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