Vishay - Model 303139, 303140 -Molded Surface Mount Space and Military Grade Resistors

Molded Surface Mount Space and Military Grade Resistors SMRxDZ, Screen/Test Flow in Compliance with EEE-INST-002, Level 1 and MIL-PRF-55182

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Temperature coefficient of resistance (TCR): ±0.2 ppm°C typical (–55°C to +125°C, +25°C ref.)
Tolerance: to ±0.02%
Power coefficient of resistance (PCR)
“?R due to self heating”: 5 ppm at rated power
Flexible terminations ensure minimal stress transference from the PCB due to a difference in thermal coefficient of expansions (TCE)
Electrostatic discharge (ESD): at least to 25 000 V
Load life stability: ±0.005% (70°C, 2000 h at rated power)
Resistance range: 5 Ω to 40 kΩ
Vishay Foil resistors are not restricted to standard values; specific “as requested” values can be supplied at no extra cost or delivery (e.g., 1K2345 vs. 1K)
Maximum power: to 600 mW at 70°C
Non-inductive, non-capacitive design
Current noise: –40 dB
Voltage coefficient: <0.1 ppm/V
Non-inductive: <0.08 μH
Non hot spot design
Terminal finish; tin/lead alloy
Matched sets with TCR tracking are available upon request
For oriented performances, please contact us
For prototype units, append a “U” to the model number (example: 303139U). These units pass all tests per table 3 (page 4) with no destructive qualification testing required (table 4, page 4).

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