DFRobot
DB9 Female Connector For RS232/RS422/RS485
$0.48
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A solder-tail DB9 female connector for RS-232, RS-422, and RS-485 serial communication interfaces. This widely used connector type is a staple for connecting...
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A solder-tail DB9 female connector for RS-232, RS-422, and RS-485 serial communication interfaces. This widely used connector type is a staple for connecting serial devices, industrial equipment, and legacy computing hardware.
Key Features
- DB9 Female – Standard 9-pin D-sub connector
- Solder-Tail Package – For through-hole PCB mounting or cable assembly
- Multi-Protocol – Compatible with RS-232, RS-422, and RS-485
RS-232 Maximum Cable Length Guide
- 19,200 baud: ~15 m (50 ft)
- 9,600 baud: ~150 m (500 ft)
- 4,800 baud: ~300 m (1,000 ft)
Note: Actual cable length depends on baud rate, cable capacitance, and ambient noise. Values above are approximate guidelines.
Package Contents
- 1× DB9 female connector
Jargon buster
Plain-language definitions for the technical terms used above.
- baud
- Baud is the signalling rate of a serial connection, often used as the speed setting for UART communication. Matching the baud rate matters because both connected devices must use the same setting for readable data.
- PCB
- A printed circuit board is a rigid board with copper tracks that connect electronic parts without loose wires. For this kit, the PCBs also form the airplane shape, so they are both the circuit base and part of the finished model.
- RS-232
- An older serial communication standard that uses higher signal voltages than modern microcontroller logic pins. If you are connecting this breakout to a microcontroller, you may need an RS-232 interface or level converter rather than wiring it directly.
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