Temperature Sensors - NTC Thermistors

Part Number	Description / PDF	Quantity
NTHS0805N17N1503JF Vishay / Dale	THERM NTC 150KOHM 4064K 0805	0
NTHS0603N02N1002JE Vishay / Dale	THERMISTOR NTC 10KOHM 3477K 0603	4676
01C1002FF Vishay / Dale	THERMISTOR NTC 10KOHM BEAD	450
09T2002JF Vishay / Dale	THERMISTOR NTC 20KOHM BEAD	0
NTHS0603N01N5002FE Vishay / Dale	NTHS-0603N01 50K 1% E3	2460
NTHS0603N17N1503KE Vishay / Dale	THERM NTC 150KOHM 4064K 0603	0
NTHS0603N17N2003JE Vishay / Dale	THERM NTC 200KOHM 4247K 0603	1473
NTHS1206N04N2203JE Vishay / Dale	THERM NTC 220KOHM 4247K 1206	0
NTHS0603N01N1003JE Vishay / Dale	THERM NTC 100KOHM 3964K 0603	3368
NTHS0805N01N5002JF Vishay / Dale	THERMISTOR NTC 50KOHM 3964K 0805	0
NTHS0805N02N6801KU Vishay / Dale	THERM NTC 6.8KOHM 3477K 0805	0
NTHS0805N17N1003JE Vishay / Dale	THERM NTC 100KOHM 4064K 0805	403
NTHS0402N02N1002KE Vishay / Dale	THERMISTOR NTC 10KOHM 3477K 0402	0
NTHS1206N02N1002KE Vishay / Dale	THERMISTOR NTC 10KOHM 3500K 1206	4356
01C3001FF Vishay / Dale	THERMISTOR NTC 3KOHM 3964K BEAD	100
NTHS0603N10N2002JE Vishay / Dale	THERMISTOR NTC 20KOHM 3500K 0603	3
09M1002FF Vishay / Dale	THERMISTOR NTC 10KOHM BEAD	413
NTHS0603N04N3303JE Vishay / Dale	THERM NTC 330KOHM 4247K 0603	2550
NTHS0603N17N1503JF Vishay / Dale	THERM NTC 150KOHM 4064K 0603	0
02C1001JF Vishay / Dale	THERMISTOR NTC 1KOHM BEAD	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.