UXA 0204, UXB 0207, UXE 0414

Vishay Beyschlag

High Precision Leaded Resistors

FEATURES

Superior thin film technology

DESCRIPTION

UXA 0204, UXB 0207 and UXE 0414 high precision leadedthin film resistors combine the proven reliability of theprofessional products with an exceptional level of precisionand stability. Therefore they are perfectly suited forapplications in the fields of precision test and measuringequipment and particularly for the design of calibrationreferences and standards.

Exceptional low TCR: ± 02 ppm/K to ± 10 ppm/KSuper tight tolerance: ± 0.01 % to ± 0.25 %Exceptional overall stability: class 0.02Wide resistance range: 22 Ω to 1 MΩLead (Pb)-free solder contacts

Pure tin plating provides compatibility with lead (Pb)-freeand lead containing soldering processes

Compatible with “Restriction of the use of HazardousSubstances” (RoHS) directive 2002/95/EC (issue 2004)

APPLICATIONS

Precision test and measuring equipment

Design of calibration references and standards

METRIC SIZE

DIN:CECC:

0204A

0207B

0414D

TECHNICAL SPECIFICATIONS

DESCRIPTIONCECC sizeResistance rangeResistance toleranceTemperature coefficientOperation mode

Climatic category (LCT/UCT/days)Rated dissipation:

P85P70

Operating voltage, Umax AC/DCFilm temperature

Max. resistance change at P70for resistance range, ΔR/R max., after:

2000h

Max. resistance change at P85for resistance range, ΔR/R max., after:

1000h8000h225000h

Specified lifetime

Permissible voltage against ambient :

1 minutecontinuous

Failure rate

300V75V≤ 0.7 x 10-9/h

500V75V ≤ 0.3 x 10-9/h

800V75V≤ 0.1 x 10-9/h

84

Document Number: 28726

Revision: 21-Aug-07

0.05W0.1 W200 V125°C100 Ωto100 kΩ

0.125 W0.25W250 V125°C100 Ωto250 kΩ

0.25 W0.5W300 V125°C100 Ωto100 kΩ

UXA 0204

A

22 Ω to 221 kΩ

UXB 0207

B10 Ω to 1 MΩ

UXE 0414

D

22 Ω to 511 kΩ± 0.1 %; ± 0.05 %± 10ppm/K; ± 05ppm/K

precision20/125/56

± 0.25 %; ± 0.1 %; ± 0.05 %; ± 0.01 %± 10ppm/K; ± 05ppm/K; ± 02ppm/Kprecision20/125/56

precision20/125/56

≤ 0.05 %100 Ωto100 kΩ

≤ 0.05 %100 Ωto250 kΩ

≤ 0.05 %100 Ωto100 kΩ

≤ 0.02 %≤ 0.04 %≤ 0.12 %225 000h

≤ 0.02 %≤ 0.04 %≤ 0.12 %225 000h

≤ 0.02 %≤ 0.04 %≤ 0.12 %225 000h