Temperature Sensors - Thermostats - Solid State

Image Part Number Description / PDF Quantity Rfq
TC624VOA

TC624VOA

Roving Networks / Microchip Technology

THERMOSTAT PROG ACT HI/LOW 8SOIC

0

TC620CCPA

TC620CCPA

Roving Networks / Microchip Technology

THERMOSTAT PROG ACTIVE HIGH 8DIP

233

MAX6504UKN005+

MAX6504UKN005+

Maxim Integrated

THERMOSTAT 5DEGC ACT HI SOT23-5

372495

S-5844A95DB-M5T1U3

S-5844A95DB-M5T1U3

ABLIC U.S.A. Inc.

THERMOSTAT 95DEGC ACT LO SOT23-5

100

BDJ0600HFV-TR

BDJ0600HFV-TR

ROHM Semiconductor

THERMOSTAT 60DEGC ACT LOW HVSOF5

0

S-5844A80DB-A4T2U3

S-5844A80DB-A4T2U3

ABLIC U.S.A. Inc.

THERMOSTAT OPEN DRAIN HSNT4-B

0

S-5844A77DB-I4T1U3

S-5844A77DB-I4T1U3

ABLIC U.S.A. Inc.

THERMOSTAT OPEN DRAIN SNT4A

0

S-5844A70DB-I4T1U3

S-5844A70DB-I4T1U3

ABLIC U.S.A. Inc.

THERMOSTAT OPEN DRAIN SNT4A

0

S-5844A90CC-A4T2U3

S-5844A90CC-A4T2U3

ABLIC U.S.A. Inc.

THERMOSTAT OPEN DRAIN HSNT4-B

0

TC623CEPA

TC623CEPA

Roving Networks / Microchip Technology

THERMOSTAT PROG ACTIVE HIGH 8DIP

0

TC620HCPA

TC620HCPA

Roving Networks / Microchip Technology

THERMOSTAT PROG ACTIVE HIGH 8DIP

0

LM26CIM5-YHA/NOPB

LM26CIM5-YHA/NOPB

Texas Instruments

THERMOSTAT 110DEG ACT LO SOT23-5

4211

MAX6510HAUT+T

MAX6510HAUT+T

Maxim Integrated

THERMOSTAT PRG ACT HI/LO SOT23-6

7099

S-5844A90CC-I4T1U3

S-5844A90CC-I4T1U3

ABLIC U.S.A. Inc.

THERMOSTAT OPEN DRAIN SNT4A

0

N34TS04MT3ETG

N34TS04MT3ETG

MEMORY IC(EEPROM)

0

LM57TEPWRQ1

LM57TEPWRQ1

Texas Instruments

THERMOSTAT PROG ACT HI/LO 8TSSOP

0

S-5844A75CD-A4T2U3

S-5844A75CD-A4T2U3

ABLIC U.S.A. Inc.

THERMOSTAT 75DEGC ACT LO HSNT4-B

10047

S-5842ACAAS-I6T1U

S-5842ACAAS-I6T1U

ABLIC U.S.A. Inc.

THERMOSTAT 45DEGC ACT LOW SNT-6A

100

TMP303CDRLR

TMP303CDRLR

Texas Instruments

THERMOSTAT 60DEG ACT HI SOT563-6

0

TC652ACVUA

TC652ACVUA

Roving Networks / Microchip Technology

THERMOSTAT 25/35DEG ACT LO 8MSOP

0

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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