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UM803RS Breakout
IC RESET CIRCUIT 3-PIN SOT23-3
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3-pin microprocessor reset circuit in SOT-23-3 surface-mount package. Monitors power supply voltage and generates reset signals to ensure proper microcontroller initialization during startup or brownout conditions. Commonly used in embedded systems and digital logic applications requiring reliable power-on reset functionality.
Package: SOT-23-3 · 3 pins
Why does this need a breakout?
SOT-23's tiny 0.95mm pin pitch and compact form factor make hand-soldering tedious and prone to bridging errors. A breakout board breaks out the three pins to standard 0.1" spacing for breadboard prototyping, eliminating the need for specialized soldering equipment and enabling fast circuit iteration with transistors, diodes, and small-signal components.
Component specifications
ELECTRICAL CHARACTERISTICS
| Manufacturer | Union Semiconductor International Limited |
| Part Number | UM803RS |
| Package | SOT-23-3 |
| Pin Count | 3 |
| Number of Voltages Monitored | 1 |
| Output | Open Drain or Open Collector |
| Reset | Active Low |
| Type | Simple Reset/Power-On Reset |
| Voltage - Threshold | 2.63V |
What's Included
BILL OF MATERIALS
- 1x UM803RS soldered onto breakout PCB
- Pin headers pre-soldered (2.54mm / 0.1" pitch)
- All IC pins broken out to 2.54mm headers
Breakout Board Design
PCB SPECIFICATIONS
WIDTH
< 0.9" (straddles breadboard)
PITCH
2.54mm standard
SOLDER
Lead-free, reflow assembled
FINISH
FR4, lead-free HASL