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UAR Low Noise High Precision Resistors
Low Noise
High Precision
Resistors
Metal Thin Film Resistors Define Precision
Preview
The UAR range of high precision resistors represents a significant technical advancement in resistive technology,
combining low temperature coefficients with high environmental stabilities, and high frequency performance.
Laser beam trimming gives tolerance accuracies from 0.02 % to 1 %.
The UAR range effectively bridges the gap that has hitherto existed between the high precision, high stability
networks or wirewound technology and conventional film technology.
Full lines equate Vishay, IRC, Ohmite, Caddock, Panasonic precision resistors with fast delivery and more
competitive price.
The metal film series is RoHS compliant with Pb-free terminations. Detailed specifications, both mechanical and
electrical, please contact our sales representative for more information.
Mil-Std-202 Standard :
This standard establishes uniform methods for testing electronic and electrical component parts,
including basic environmental tests to determine resistance to deleterious effects of natural elements
and conditions surrounding military operations, and physical and electrical tests.
Applications :
- All General Purpose Applications,
- Medical Electronics, Current Pulse Limiters,
- Precision Instruments, Telecom, Test and
Measurement.
Features :
- Very tight tolerances: down to A2(±0.02%).
- Exceptionally low noise; typically 0.05 μV/V.
- 0.125 W to 0.33 W at 85 °C, Electrical Insulation > 1000 MΩ.
- Very Low temperature coefficient: ±3, ±5, ±10 and ±15 ppm/°C.
- Excellent high frequency performance, industrial grades, RoHS Compliant.
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TOKEN
UAR Low Noise High Precision Resistors
L
A
High Precision Resistors (UAR) Dimensions
Dimensions & Technical Characteristics
D
Type
Power Rating at 85°C (W)
Max. Working Voltage (V)
Resistance Range (Ω )
Dimensions (mm)
L±0.3
D±0.3
A±0.05
UAR1/4
0.33
300
500.0~1.0M
14.8
5.2
0.6
UAR1/8
0.25
300
100.0~1.0M
10.0
3.7
0.6
UAR1/10
0.125
300
100.0~1.0M
6.8
2.5
0.6
Specification
Tolerance:
Temp. Coefficient:
Standard temperature characteristic:
on request:
Noise:
Voltage coefficient:
Non linearity (3. Harm):
Inductivity:
Thermal voltage to copper:
Isolations Resistance:
±0.02, ±0.05, ±0.10, ±0.25, ±0.5, ±1.0%
±3, ±5, ±10, ±15ppm/°C
+25 to 85 °C
-10 to +85 °C
less than 0.05 μV/V
less than 0.02 ppm/V
more than (-100)dB
≤1MHz
1 ~ 3 μV/°C
10
10
Ω
Tests According MIL STD 202
Temperature cycling:
Low temp. operation:
Short time overload:
Dielectric strength:
Load life:
Resistance to soldering heat:
Moisture test:
Shock-and Vibrations test:
0.02%
0.013%
0.01%
0.01%
0.04%
0.012%
0.050%
0.015%
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