Temperature Sensors - NTC Thermistors

Part Number	Description / PDF	Quantity
01M8201FF Vishay BC Components/Beyshlag/Draloric	NTC THERMISTORS	0
NTCASCWE3C70001 Vishay BC Components/Beyshlag/Draloric	NTC SCREW, 6-32 UNC, 10K/2%, 398	95
NTCALUG02A103GA Vishay BC Components/Beyshlag/Draloric	NTC LUG02 10K 2% E4 PEEK AWG#30	425
01C1502JF Vishay BC Components/Beyshlag/Draloric	NTC THERMISTORS	0
NTCLE100E3339GT1A Vishay BC Components/Beyshlag/Draloric	NTC CU 0.6 LD CODED 33R 2% 1E	0
NTCLE100E3338HT2A Vishay BC Components/Beyshlag/Draloric	NTC CU 0.6 LD CODED 3R3 3% 2E	0
NTCLE100E3272JB0A Vishay BC Components/Beyshlag/Draloric	NTC CU 0.6 LD CODED 2K7 5%	0
NTCS0805E3103GLT Vishay BC Components/Beyshlag/Draloric	THERMISTOR NTC 10K OHM SMD 0805	0
NTCLE203E3223GB0A Vishay BC Components/Beyshlag/Draloric	NTC NI 0.4 LEAD 22K 2%	0
NTCLE100E3688JB0 Vishay BC Components/Beyshlag/Draloric	THERMISTOR NTC 6.8OHM 2880K BEAD	929
NTCS0805E3684JXT Vishay BC Components/Beyshlag/Draloric	THERM NTC 680KOHM 4125K 0805	15081
NTCLE100E3272HT2A Vishay BC Components/Beyshlag/Draloric	NTC CU 0.6 LD CODED 2K7 3% 2E	0
NTCLE100E3502GT2A Vishay BC Components/Beyshlag/Draloric	NTC CU 0.6 LD CODED 5K 2% 2E	0
NTCLE203E3472JB0A Vishay BC Components/Beyshlag/Draloric	NTC NI 0.4 LEAD 4K7 5%	0
NTCLE100E3331HT1A Vishay BC Components/Beyshlag/Draloric	NTC CU 0.6 LD CODED 330R 3% 1E	0
NTCLE100E3683GT2A Vishay BC Components/Beyshlag/Draloric	NTC CU 0.6 LD CODED 68K 2% 2E	0
NTCLE101E3C90173 Vishay BC Components/Beyshlag/Draloric	THERM NTC 10KOHM 3435K RADIAL	1721
NTCLE100E3682HT2A Vishay BC Components/Beyshlag/Draloric	NTC CU 0.6 LD CODED 6K8 3% 2E	0
NTCLE203E3104GB0 Vishay BC Components/Beyshlag/Draloric	THERM NTC 100KOHM 4190K BEAD	1399
NTCLE100E3473HB0 Vishay BC Components/Beyshlag/Draloric	THERMISTOR NTC 47KOHM 4090K BEAD	553

Temperature Sensors - NTC Thermistors

1. Overview

NTC (Negative Temperature Coefficient) thermistors are temperature-sensitive resistors whose resistance decreases with increasing temperature. This semiconductor ceramic device utilizes metal oxide materials to achieve precise temperature measurement and control. As a fundamental component in thermal management systems, NTC thermistors play critical roles in modern electronics, automotive engineering, and industrial automation due to their high sensitivity ( : 2000-5000 K) and accuracy ( 0.1 C to 5 C).

2. Major Types and Functional Classification

Type	Functional Characteristics	Application Examples
Bead Thermistors	Small size ( 0.5-5mm), fast response (<50ms), glass-encapsulated	Medical probes, liquid temperature monitoring
Disk Thermistors	Higher power rating, epoxy-coated, axial leads	Power supply thermal protection, HVAC systems
Chip Thermistors	SMD packaging, low profile (0.6-3.2mm), RoHS compliant	Smartphone thermal management, wearable devices
Glass-Encapsulated	Hermetic seal, corrosion resistance, operating temp: -50 C to +300 C	Automotive battery monitoring, aerospace sensors

3. Structure and Composition

Typical NTC thermistor construction includes:

Semiconductive ceramic core (Mn-Ni-Co-Ox system)
Platinum alloy electrode layers (sintered or plated)
Protective epoxy/glass encapsulation (IP67 rated)
Lead wires (Cu/Ni alloy, 26-34 AWG)

Manufacturing process involves powder synthesis at 1500 C, isostatic pressing, and controlled atmosphere sintering to achieve desired R-T characteristics.

4. Key Technical Specifications

Parameter	Description	Significance
Rated Resistance (R25)	Resistance at 25 C (100 -10M range)	System compatibility, signal conditioning design
B-Value (K)	Material constant (2000-5000K)	Determines sensitivity across operating range
Tolerance	Resistance deviation ( 1% to 15%)	Affects measurement accuracy
Operating Temp Range	-100 C to +600 C (varies by type)	Environmental suitability
Dissipation Factor	mW/ C (self-heating coefficient)	Power consumption and stability considerations

5. Application Fields

Primary industries utilizing NTC thermistors:

Industrial: Process control ( 0.5 C accuracy), motor protection
Consumer Electronics: Battery management (Li-ion charging), smart thermostats
Medical: Patient monitoring (Class F accuracy), lab equipment
Automotive: Battery pack thermal monitoring (ISO 14001 compliance), ECU protection

Notable application example: Tesla Model S battery management system uses 48-channel NTC array for cell temperature monitoring ( 1 C accuracy).

6. Leading Manufacturers and Products

Manufacturer	Key Products	Technical Highlights
Murata Electronics	NXFT Series	Automotive-grade (AEC-Q200), 0.5 C accuracy, -50 C to +150 C range
TE Connectivity	NTCLE Series	Medical certification (IEC 60601), 3.2mm chip format
Vishay Beyschlag	NTCAl Series	Aluminum housing, 50W power handling, IP68 rating

7. Selection Guidelines

Key considerations for NTC thermistor selection:

Resistance-Temperature curve matching application requirements
Environmental factors: humidity (IP rating), vibration (automotive shock specs)
Electrical parameters: operating current (self-heating effects)
Form factor constraints (SMD vs through-hole)
Calibration requirements (standard vs customized R-T tables)

Recommend verifying long-term stability (aging rate <0.2%/year) and RoHS compliance for production applications.

8. Industry Trends

Emerging developments include:

Micro-NTC fabrication (MEMS-based, <0.1mm chips)
High-temperature stability improvements (up to 600 C operation)
Integration with wireless sensor networks (Zigbee/LoRa compatibility)
AI-enhanced linearization algorithms (reducing external circuit complexity)

Market growth projected at 8.2% CAGR through 2027 driven by EV battery management demands.