Temperature Sensors - Thermostats - Solid State

Image Part Number Description / PDF Quantity Rfq
TC653AGVUATR

TC653AGVUATR

Roving Networks / Microchip Technology

THERMOSTAT 25/55DEG ACT LO 8MSOP

0

S-5844A77DD-M5T1U3

S-5844A77DD-M5T1U3

ABLIC U.S.A. Inc.

THERMOSTAT OPEN DRAIN SOT23-5

0

MAX6503UKN045+T

MAX6503UKN045+T

Maxim Integrated

THERMOSTAT 45DEGC ACT LO SOT23-5

420

TC6502P095VCTTR

TC6502P095VCTTR

Roving Networks / Microchip Technology

THERMOSTAT 95DEGC ACT HI SOT23-5

0

MAX6687AU40H+

MAX6687AU40H+

Analog Devices, Inc.

LOCAL/REMOTE TEMPERATURE SWITCH

7153

S-5843AB0DC-M5T1U

S-5843AB0DC-M5T1U

ABLIC U.S.A. Inc.

THERMOSTAT 110DEG ACT HI SOT23-5

95

TC622VPA

TC622VPA

Roving Networks / Microchip Technology

THERMOSTAT PROG ACTIVE HIGH 8DIP

0

LM57FQPWQ1

LM57FQPWQ1

Texas Instruments

THERMOSTAT PROG OPEN COL 8TSSOP

0

MAX6504UKN005+T

MAX6504UKN005+T

Maxim Integrated

THERMOSTAT 5DEGC ACT HI SOT23-5

18512500

TC653AEVUATR

TC653AEVUATR

Roving Networks / Microchip Technology

THERMOSTAT 25/45DEG ACT LO 8MSOP

0

SM72480SD-120/NOPB

SM72480SD-120/NOPB

Texas Instruments

THERMOSTAT 120DEGC OPN DRN 6WSON

959

S-5842ACAAM-M6T1U

S-5842ACAAM-M6T1U

ABLIC U.S.A. Inc.

THERMOSTAT 45DEGC ACT LO SOT23-6

3000

MAX6501UKP045+T

MAX6501UKP045+T

Maxim Integrated

THERMOSTAT 45DEGC ACT LO SOT23-5

1501

TC6502P075VCTTR

TC6502P075VCTTR

Roving Networks / Microchip Technology

THERMOSTAT 75DEGC ACT HI SOT23-5

0

S-5844A75CB-M5T1U3

S-5844A75CB-M5T1U3

ABLIC U.S.A. Inc.

THERMOSTAT OPEN DRAIN SOT23-5

0

MAX6504UKP005+T

MAX6504UKP005+T

Maxim Integrated

THERMOSTAT 5DEGC ACT HI SOT23-5

0

S-5841A85D-M5T1G

S-5841A85D-M5T1G

ABLIC U.S.A. Inc.

THERMOSTAT 85DEGC ACT LO SOT23-5

0

LM26CIM5X-HHD

LM26CIM5X-HHD

Texas Instruments

THERMOSTAT 0DEGC ACT HI SOT23-5

0

S-5844A90DB-I4T1U3

S-5844A90DB-I4T1U3

ABLIC U.S.A. Inc.

THERMOSTAT OPEN DRAIN SNT4A

0

LM57BISD-10/NOPB

LM57BISD-10/NOPB

Texas Instruments

THERMOSTAT PROG ACT HI/LOW 8WSON

3

Temperature Sensors - Thermostats - Solid State

1. Overview

Solid state temperature sensors and thermostats are electronic devices that detect and regulate temperature using semiconductor-based sensing elements. Unlike mechanical thermostats, these solid state devices offer faster response times, higher precision, and enhanced reliability through electronic signal processing. They play critical roles in industrial automation, consumer electronics, automotive systems, and medical equipment by enabling precise thermal management and energy-efficient operations.

2. Main Types and Functional Classification

TypeFunctional FeaturesApplication Examples
Semiconductor-based SensorsUtilize silicon bandgap technology for linear output, high accuracy ( 0.5 C typical)Computer CPU thermal protection
Thermistor Interface ICsDigital output with integrated ADC, supports I2C/SPI protocolsSmart home thermostats
Thermal SwitchesProgrammable trip points, latching/non-latching modesIndustrial oven controllers
MEMS Thermal SensorsMicromachined structures for miniaturized applicationsWearable health monitors

3. Structure and Components

Typical solid state devices consist of: (1) Semiconductor sensing element (silicon/germanium), (2) Signal conditioning circuitry (amplifiers, ADCs), (3) Protective packaging (epoxy/ ceramic encapsulation), (4) Interface connectors (wire leads/SMD pads). Advanced designs integrate microcontroller units for smart functionality, with temperature-to-digital conversion performed on-chip.

4. Key Technical Specifications

ParameterImportance
Temperature Range (-55 C to +150 C)Determines operational environment suitability
Accuracy ( 0.1 C to 3 C)Critical for precision applications like medical devices
Response Time (1ms-10s)Affects system reaction speed
Output Type (Analog Voltage/PWM/Digital)Dictates compatibility with control systems
Power Consumption (5 A-10mA)Essential for battery-powered devices
Thermal Hysteresis (0.1 C-5 C)Prevents oscillation in switching applications

5. Application Fields

Key industries include: Industrial Process Control (chemical reactors), Medical Equipment (patient monitors), Automotive (battery management systems), Consumer Electronics (smartphones), HVAC systems, and Aerospace (avionics thermal regulation). Specific devices: semiconductor manufacturing tools, electric vehicle battery packs, and refrigeration systems.

6. Leading Manufacturers and Products

ManufacturerRepresentative ProductKey Features
Texas InstrumentsLM75BDigital temperature sensor with 1 C accuracy
STMicroelectronicsL6281Thermal protector for motor drives
HoneywellTSY01-B1Digital thermostat IC for HVAC
Omron ElectronicsD6T-44LMEMS-based thermal array sensor

7. Selection Guidelines

Key considerations: (1) Match temperature range to application environment, (2) Balance accuracy requirements with cost, (3) Verify packaging suitability (IP rating for harsh environments), (4) Check interface compatibility (analog/digital), (5) Evaluate power budget constraints, (6) Consider calibration requirements. For industrial applications, prioritize long-term stability; for consumer devices, focus on size and cost.

8. Industry Trends

Current trends include: Development of wireless temperature nodes for IoT applications, integration with AI-based predictive maintenance systems, advancement of ultra-low-power wake-up sensors (<1 A consumption), adoption of wide bandgap semiconductors for high-temperature operation, and increased use of MEMS technology for flexible form factors. Market growth driven by electric vehicle thermal management and smart building automation demands.

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