Description
A 100k Ohm 0.25W Metal Film Resistor is a standard electronic component widely used for signal conditioning, analog inputs, and high-impedance biasing in circuits.
Key Specifications
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Resistance: 100k Ohm (100,000 Ω)
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Power Rating: 0.25 Watt (1/4W)
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Tolerance: Typically ±1% (precision) or ±5% (general purpose)
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Construction: Metal Film (provides superior temperature stability and lower noise compared to carbon film)
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Color Code: Brown – Black – Black – Orange – Brown (for 5-band resistors)
Common Applications
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Pull-up/Pull-down: Standard value for biasing digital pins on microcontrollers like your STM32.
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Analog Circuits: Used in filters, amplifiers, and voltage dividers where stability is required.
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Prototyping: Ideal for breadboard and PCB-based lab experiments due to its compact axial lead design.
Comparison of Specifications
| Feature | Typical Value |
| Max Working Voltage | 250V |
| Temp. Coefficient | ±50 to ±100 ppm/°C |
| Operating Temperature | -40°C to +150°C |
| Mounting Type | Through-hole (Axial) |
These are readily available from most electronics suppliers in both individual units and bulk packs (often packs of 10 or 100). If you are building a stock of lab components, these 100k resistors are a staple alongside your 10k, 1k, and 330Ω values.
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