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Discover the uses of CHR1206-1-220R resistors in circuits: current limiting, signal conditioning, and more. Selection, calculation, and sourcing tips for SA engineers and students.
Ideal for current limiting, pull-up/down, and signal matching in SMD assemblies.
CHR1206-1-220R stocked for convenient pickup, student, and industry needs.
Guidance on calculating values, footprint matching, and avoiding common assembly errors.
The CHR1206-1-220R resistor is a surface-mount chip resistor of the 1206 metric package (3.2mm x 1.6mm), with a resistance of 220 Ohms. Designed for automated assembly, it is used for current limiting, voltage dividers, biasing, and signal conditioning in modern circuits. Its widespread adoption in South African industry and education stems from its balance of size, power rating, and compatibility with automated pick-and-place systems.
| Specification | CHR1206-1-220R | Notes |
|---|---|---|
| Package Size | 1206 (3.2 x 1.6 mm) | SMD, popular for moderate power, easily hand-soldered |
| Resistance | 220 (Ohms) | Value marked '220R' |
| Power Rating | Typically 0.25W (check datasheet) | Sufficient for signal and LED tasks |
| Tolerance | 1% or 5% | General purpose, industrial standard |
These characteristics make CHR1206-1-220R suitable for automated assembly as well as rework in educational labs. The 1206 footprint strikes a balance between compactness for dense boards and manageability for prototyping or student use.
A classic use-by placing a 220 resistor in series with an LED, you can safely run standard indicator LEDs from 5V or 3.3V logic lines. The resistor limits current and prevents burnout. Calculation is straightforward:
The CHR1206-1-220R is used as a pull-up or pull-down on digital logic lines to stabilize signal levels, especially for switches and open-drain outputs on microcontrollers (e.g., Arduino, STM32).
High-frequency or sensitive input/output lines often use 220 resistors as termination to match characteristic impedance, reducing signal reflection in protocols like SPI, I2C (though sometimes higher values are preferred), or parallel data busses.
Paired with another resistor value, a CHR1206-1-220R creates voltage dividers-useful for ADC input scaling or biasing transistor bases. It's commonly found in low-power analog designs where board space and reflow compatibility are important.
Whether you're prototyping, teaching, or specifying a production BOM for contract manufacturing in South Africa, the CHR1206-1-220R resistor packs reliability and flexibility. With local stock and depth of range, Communica supports bulk, cut-tape, or reel orders through online and branch channels. Always check for associated tools like tweezers, SMD placement pens, and flux which make assembly smoother.
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