Vishay Expands its Series of Automotive-grade NTC Thermistors

Expanding Vishay’s existing NTCS0603E3…..T and NTCS0805E3…..T series, the fresh thermistors are fully protected by glass coatings and offer tolerances as tight as  ±1% for both their R₂₅ and B_25/85 values.

 

Members of the expanded thermistor series. Image used courtesy of Vishay

 

Members of each series are available in 0603 and 0805 case sizes, respectively. Smaller than MELF resistors, the units are both easier to mount and offer greater resistance to bending.

 

The Complete Series — An Overview

Various R₂₅ Values are Available

• Both series feature individual thermistors with R₂₅ values starting at ±1 kΩ. The NTCS0603E3 series features units with R₂₅ values of up to 100 kΩ, while values for the NTCS0805E3 units reach 680 kΩ. Individual units within both groups can be chosen with R₂₅ tolerances specced at ±1%, ±2%, ±3% or ±5%.

B_25/85 Availabilities 

• B_25/85 values in the NTCS0603E3 series range from 3170 K to 4100 K. Corresponding offerings from the NTCS0805E3 series run from 3370 K to 4125 K. The former series sports devices with a B_25/85 tolerance of 1%, while the latter includes units with both 1% and 3% tolerances.

Negative Temperature Coefficient (TCR)

• For the NTCS0603E3 series, TCRs range between -40 ℃ at -7 %/K and -2 %/K at 150℃. The NTCS0805E3 is just slightly different, with TCRs ranging between -40 ℃ at -6 %/K and -2 %/K at 150℃.

Maximum Power Dissipation

• 125 mW and 210 mW for the NTCS0603E3 and NTCS0805E3 series, respectively

 

New Series Members 

There are a total of 16 designations in both the NTCS0603E3 and the NTCS0805E3 series. Each has either two or four R₂₅ toleration values. The new units are as follows:

Table1. The NTCS0603E3 Series

Unit Number	R25	R25 Tolerance	B25/85	B25/85 Tolerance	UL Recognized
NTCS0603E3102*LT	1 kΩ	±3% or ±5%	3170 K	±1%	No
NTCS0603E3152*LT	1.5 kΩ	±3% or ±5%	3280 K	±1%	No
NTCS0603E3502*LT	5 kΩ	±1%, ±2%, ±3%, or ±5%	3480 K	±1%	No

Nomenclature: Each unit features a star (*) in its ordering number. The star is replaced by a letter signifying the tolerance of the R25 value.

Table 2. The NTCS0805E3 Series

Unit Number	R25	R25 Tolerance	B25/85	B25/85 Tolerance	UL Recognized
NTCS0805E3102*LT	1 kΩ	±3% or ±5%	3370 K	±1%	No
NTCS0805E3152*LT	1.5 kΩ	±3% or ±5%	3420 K	±1%	No
NTCS0805E3502*LT	5 kΩ	±1%, ±2%, ±3%, or ±5%	3480 K	±1%	No

Nomenclature: Each unit features a star (*) in its ordering number. The star is replaced by a letter signifying the tolerance of the R25 value.

 

Complete information for the NTCS0603E3 and the NTCS0805E3 series can be found in their respective data sheets.

 

Applications

Members of both series are suited for temperature sensing, protection and compensation in a number of settings. Examples include: 

• Automotive buck/boost converters
• EV charging infrastructure
• Power supplies
• Inverters
• Office equipment 
• LED modules
• Battery chargers
• Battery packs
• Automotive entertainment systems

 

Environmental Compliance

• RoHS-compliant
• Halogen-free

 

Regulatory Notes

• AEC-Q200 qualified
• Some are cULus recognized, file E148885 (UL category XGPU2 / XGPU8) 

 

Physical Considerations

• Case sizes for the NTCS0603E3 and the NTCS0805E3 are 1.6 x 0.8 x 0.8 mm and 2.0 x 1.25 x 0.8 mm, respectively
• Operating temperature range is -40 ℃ to +150 ℃ 
• NiSn terminations, suitable for wave or reflow soldering 

 

Feature image used courtesy of Jannes Glas/Unsplash