Ultra Precision Resistors

Moulding Ultra Precision Low TCR Resistors

UAR

Token China UAR series serves as a high-accuracy, cost-effective replacement for all general type resistors enabling total ultra precision, high reliability and stability, low temperature coefficient TCR characteristics.


Detailed precision UAR specifications, both mechanical and electrical, please contact our sales representative for more information.


Features Moulding Ultra Precision Low TCR Resistors - UAR Series

  • Wide resistance ranges
  • Tolerances tight to A2(±0.02%)
  • Low temperature coefficient TCR to ±3 ppm/°C
  • Products with Pb-free Terminations Meet RoHS Requirments

Applications

  • Medical Electronics
  • Current Pulse Limiters
  • High gain feedback applications
  • Precision Instruments, Avionics
  • Vacuum and space applications

Dimensions (mm) & Specifications - Ultra Precision UAR

Type UAR1/4 UAR1/8 UAR1/10
Power Rating at 85°C (W) 0.33 0.25 0.125
Max. Working Voltage (V) 300 300 300
Resistance Range (Ω ) 500.0~1.0M 100.0~1.0M 100.0~1.0M
Dimensions
(mm)
L±0.3 14.8 10.0 6.8
D±0.3 5.2 3.7 2.5
A±0.05 0.60 0.60 0.6

Characteristics - Ultra Precision UAR

Tolerance: ±0.02, ±0.05, ±0.10, ±0.25, ±0.5, ±1.0%
Temp. Coefficient: ±3, ±5, ±10, ±15ppm/°C
Standard temperature characteristic: +25 to 85 °C
on request: -10 to +85 °C
Noise: less than 0.05 μV/V
Voltage coefficient: less than 0.02 ppm/V
Non linearity (3. Harm): more than (-100)dB
Inductivity: ≤1MHz
Thermal voltage to copper: 1 ~ 3 μV/°C
Isolations Resistance: 1010Ω

Ultra Precision UAR - Tests According MIL STD 202

Temperature cycling: 0.02%
Low temp. operation: 0.013%
Short time overload: 0.01%
Dielectric strength: 0.01%
Load life: 0.04%
Resistance to soldering heat: 0.012%
Moisture test: 0.050%
Shock-and Vibrations test: 0.015%

How to Order - Ultra Precision Resistors UAR

UAR1/8 100R B C6 P
Product Type
UAR1/4
UAR1/8
UAR1/10
Resistance Value (Ω)
500.0 ~ 1.0M
100.0 ~ 1.0M
100.0 ~ 1.0M
Resistance Tolerance (%)
A2 ±0.02
A5 ±0.05
B ±0.10
C ±0.25
D ±0.5
F ±1.0
Temperature
coefficient (PPM/°C)
C9 ±3
C7 ±5
C6 ±10
C5 ±15
Packaging
P Bulk

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UAR Series - Moulding Ultra Precision Low TCR Resistors