Temperature Sensors - NTC Thermistors

Part Number	Description / PDF	Quantity
NTCLE100E3272JB0 Vishay BC Components/Beyshlag/Draloric	THERM NTC 2.7KOHM 3977K BEAD	995
NTCS0402E3472FMT Vishay BC Components/Beyshlag/Draloric	THERM NTC 4.7KOHM 3595K 0402	0
NTCLE203E3123JB0A Vishay BC Components/Beyshlag/Draloric	NTC NI 0.4 LEAD 12K 5%	0
NTCLE203E3103FB0A Vishay BC Components/Beyshlag/Draloric	NTC NI 0.4 LEAD 10K 1%	0
NTCLE203E3472HB0A Vishay BC Components/Beyshlag/Draloric	NTC NI 0.4 LEAD 4K7 3%	0
NTCASCWE3103F Vishay BC Components/Beyshlag/Draloric	THERM NTC 10KOHM 3977K PROBE	233
NTCLE100E3331JT1A Vishay BC Components/Beyshlag/Draloric	NTC CU 0.6 LD CODED 330R 5% 1E	0
NTCLE100E3123HB0A Vishay BC Components/Beyshlag/Draloric	NTC CU 0.6 LD CODED 12K 3%	0
NTCC300E4472JT Vishay BC Components/Beyshlag/Draloric	THERMISTOR NTC 4.7KOHM 3435K DIE	0
04T5002FF Vishay BC Components/Beyshlag/Draloric	NTC THERMISTORS	0
NTCLE213E3212JMB0 Vishay BC Components/Beyshlag/Draloric	THERM NTC 2.1KOHM 3511K BEAD	1
NTCS0603E3473FHT Vishay BC Components/Beyshlag/Draloric	THERMISTOR NTC 47KOHM 3960K 0603	1844
NTCLE100E3221HT2A Vishay BC Components/Beyshlag/Draloric	NTC CU 0.6 LD CODED 220R 3% 2E	0
NTCLE100E3682GB0A Vishay BC Components/Beyshlag/Draloric	NTC CU 0.6 LD CODED 6K8 2%	0
NTCS0805E3222FMT Vishay BC Components/Beyshlag/Draloric	THERM NTC 2.2KOHM 3600K 0805	1384
NTCLE100E3101HT2A Vishay BC Components/Beyshlag/Draloric	NTC CU 0.6 LD CODED 100R 3% 2E	0
NTCLE203E3202SB0 Vishay BC Components/Beyshlag/Draloric	THERM NTC 2.06KOHM 3528K BEAD	604
NTCC300E4123JT Vishay BC Components/Beyshlag/Draloric	THERMISTOR NTC 12KOHM 3740K DIE	741
NTCLE100E3338JT1A Vishay BC Components/Beyshlag/Draloric	NTC CU 0.6 LD CODED 3R3 5% 1E	0
NTCLE100E3332GT1A Vishay BC Components/Beyshlag/Draloric	NTC CU 0.6 LD CODED 3K3 2% 1E	0

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.