30k Ohm 15mm Temperature Sensor Chip Epoxy Coated NTC 3950 Thermistor Manufacturers and Suppliers - China Factory

Product Description

30k Ohm 15mm Temperature Sensor Chip Epoxy Coated NTC 3950 Thermistor

Epoxy Coated NTC Thermistor 30K 3950 Temperature Probe Chip For Auto Wire Harness

I Selection Of The Epoxy Coated NTC Thermistor 30K 3950 Temperature Probe Chip

Modifications are available to existing standard product packages, such as adding connectors or changing wire size or length, as well as offering special resistance-temperature (R-T) curves, R-T curve matching, and custom lead forming and bending to discrete thermistors. In addition, the following options and services are available.

Complete custom sensor packages, including moisture resistant designs
Custom resistance-temperature (R-T) characteristics
Specialized resistance tolerance or temperature accuracy within specified temperature ranges
Sensing element design for best long-term stability
Rapid prototyping and quick-turn concept parts including 3D printed parts
Prototype units using prototype tooling
Reliability/validation testing options
Fully designed, production-capable sensor and tooling

II Size Of The Epoxy Coated NTC Thermistor 30K 3950 Temperature Probe Chip(Unit:mm)

30k Ohm 15mm Temperature Sensor Chip Epoxy Coated NTC 3950 Thermistor 1

III Material Lists Of The Epoxy Coated NTC Thermistor 30K 3950 Temperature Probe Chip

NO	Material Name	Item/PN
2-1.	Element	R25=30KΩ±10% B25/50=3950±1%
2-2.	Coating	Epoxy Resin (Black)
2-3.	Lead Wire	UL4411# 24AWG×2C 70.20mm 125℃ 300V (Yellow) Diameter:1.4±0.05 2.9±0.1mm Meet SAEJ-1128

IV Electrical Performance Of The Epoxy Coated NTC Thermistor 30K 3950 Temperature Probe Chip

NO	Item	Sign	Test Conditions	Min.	Normal value	Max.	Unit
4-1.	Resistance at 25℃	R25	Ta=25±0.05℃ PT≦0.1mw	27.0	30.0	33.0	kΩ
4-2.	B Value	B25/50		3910.5	3950	3989.5	k
4-3.	Dissipation factor	σ	Ta=25±0.5℃ In still air	≧2			mw/℃
4-4.	Time constant	τ	Ta=25±0.5℃ In still air	≦7			sec
4-5.	Operating temp.range	/	/	-20	/	+125	℃
4-6	Insulation resistance	/	100V DC	100	/	/	MΩ
4-7.	Withstand voltage test	/	200V AC	5	/	/	Sec

V Reliability Of The Epoxy Coated NTC Thermistor 30K 3950 Temperature Probe Chip

NO	Item	Technical requirements	Test conditions and method
5-1.	High temp. Test	DR/R25£±3% DB/B£±3% No change with withstand voltage, Insalution performance. Appearance without damage.	100±5℃,power on 500±24 hrs,DC0.2mA
5-2.	Low temp. tes		-20±5℃,power on 500±24 hrs,DC0.2mA
5-3.	Endure moisture test		Store in environment 55±2℃,90%-95%RH for 500±24 hrs
5-4.	Temp. cycle test		–20℃×30min→Room temp.×10min→ in 100℃ water×30min→Room temp.×10min 10 cycles
5-5	Load electrify test		Power on DC1mA, 500hrs in room temp. and humid.
5-6	Drop test		Free fall into concrete floor from height 1M ,10 cycle.
5-7	Vibration test		Frequency range:10～55HZ Total amplitude 1.52mm 1 cycle 1 min ,direction and time X,Y,Z axs 2Hr each.
5-8	Bending test		Bend 180°binding site wire and epoxy resin.Back and forth 10 times
5-9	Tensile tests		Put 2 kg of force lasts 1 min

VI Fundamentals Of The Epoxy Coated NTC Thermistor 30K 3950 Temperature Probe Chip

Each temperature sensor style has its own set of operating principles, features, benefits, considerations,and limitations for optimal use.

Thermistors (NTCs and PTCs): Thermistors are thermally sensitive resistors whose prime function is to exhibit a large, predictable, and precise change in electrical resistance when subjected to a corresponding change in body temperature. Negative Temperature Coefficient (NTC) thermistors exhibit a decrease in electrical resistance when subjected to an increase in body temperature. Positive Temperature Coefficient (PTC) thermistors exhibit an increase in electrical resistance when subjected to an increase in body temperature.

RTDs: Platinum Resistance Temperature Detectors (Pt-RTDs) are temperature sensors that have a positive, predictable, and nearly linear change in resistance when subjected to a corresponding change in their body temperature.

Digital Temperature Indicators: Digital Temperature Indicators have a positive relationship between resistance and temperature. The response is very much like a digital signal; below the trip temperature, resistance will be

low, above the trip temperature, resistance will be very high. This digital response is ideal for applications where knowing the temperature has increased beyond a specific value is required. With the digital response, no analog to digital conversion is necessary, allowing designers to save time and space.

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