Ultra Precision Wire-Wound Resistors
Type UPW Series
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Other logos, product and Company names mentioned herein may be trademarks of their respective owners.
While TE has made every reasonable effort to ensure the accuracy of the information in this datasheet, TE does not guarantee that it is error-free, nor does TE make any other
representation, warranty or guarantee that the information is accurate, correct, reliable or current. TE reserves the right to make any adjustments to the information contained herein
at any time without notice. TE expressly disclaims all implied warranties regarding the information contained herein, including, but not limited to, any implied warranties of merchantabili-
ty or fitness for a particular purpose. The dimensions in this datasheet are for reference purposes only and are subject to change without notice. Specifications are subject to change
without notice. Consult TE for the latest dimensions and design specifications.
Performance Characteristics
The evaluation of the performance characteristics is carried out with reference to
IEC specifications QC 400 000 and QC 400 100.
How to Order
Orders for these components should include the following information:-
Type, tolerance code letter and value e.g. UPW30 L 1K15
TEST REF Long Term Tests ±(0.25% + 0.05 ohm)
4.23 Climatic sequence
4.24 Damp heat, steady state
4.25.1 Endurance at 70 °C
4.25.3 Endurance at 145 °C
TEST REF Short Term Tests ±(0.1% + 0.01 ohm)
4.13 Overload
4.16 Robustness of terminations
4.18 Resistance to soldering heat
4.19 Rapid change of temperature
4.22 Vibration
All resistance values are measured at a distance of 9.53mm (0.375 inch) from
the end cap.
Marking
The resistors are marked with the following information:- Manufacturer's name, type number, value and tolerance,
four figure date code.
Packaging
UPW Series resistors are packed loose in boxes.
Derating Curve
40 60 80 100 120 140 160
100
80
60
40
20
0
Percent Rated Power
Ambient Temperature (°C)
UPW Series resistors must be derated for tolerances below 0.1%. Use the graph to select tolerance versus
operating temperature to determine the percentage rated power for operation.
No derating is required for operation below 20 °C.
1%, 0.5%, 0.2%, 0.1%
0.05%
0.02%
0.01%
0.005%
Mounting
The resistors are suitable for processing on automatic insertion equipment and cutting and bending machines.
