1R80 SMD 1206 Resistor for Antminer S19 S19xp Hashboard
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1R80 SMD 1206 Resistor – Antminer S19 / S19XP Hashboard Repair Part
The 1R80 SMD 1206 resistor is a 1.8 Ω ± 1 %, 1/4 W chip resistor used across Antminer S19 and S19 XP hashboards in current-sense, gate-drive and protection positions around the Vcore regulation loops. When one of these tiny parts opens or drifts, the symptom on the miner side is usually a chain that will not come up, a Vcore rail that reads out of spec, or a chip string that trips protection at high hashrate. Keeping a reel of verified 1R80 1206s on the bench is the fastest path back to a healthy hashboard.
1R80 SMD 1206 Resistor Specifications
| Feature | Specification |
|---|---|
| Resistance | 1.8 Ω (1R80) |
| Rated Power | 1/4 W |
| Tolerance | 1 % |
| Maximum Working Voltage | 25 V |
| Maximum Overload Voltage | 50 V |
| Temperature Coefficient | -200 ~ +600 ppm/°C |
| Operating Temperature | -55 °C to +155 °C |
| Package | 1206 SMD (surface mount) |
| Compatibility | Antminer S19 / S19 XP hashboard repair |
| Condition | Brand New |
Diagnosing a Bad 1R80 on an S19 / S19 XP Hashboard
Typical failure mode: a discrete 1R80 reads open or drifted well outside its 1 % band after a local over-current event (for example, a blown power stage has driven current through the sense line). On the miner, this often shows as a chain that refuses to scan, a Vcore point out of spec, or a repeatable fault in one specific section of the board. Measure in-circuit first; if the reading is ambiguous, lift one end with hot air and measure again before replacing.
Rework Notes
1206 is forgiving to rework with a fine tip at ~320 °C and leaded solder. Clean the pads, tin lightly, place the new 1R80 with tweezers, and reflow each end. Re-test Vcore under low load before re-energising the full chain. Because these resistors sit on rails that can fail catastrophically, always re-check the surrounding MOSFETs and drivers — a blown driver will take the replacement 1R80 with it on the next boot.
Related Antminer S19 / S19 XP Hashboard SMD Parts
- 47 µF 50 V SMD Capacitor – S19 / S21 / T21 / KS3L
- 2N7002 SMD Transistor – S19j Pro Hashboard
- 6R8 SMD Inductor – L7 Hashboard
- Handheld SMD R/C Component Test Tweezers
Keep S19 and S19 XP hashboards alive with genuine 1R80 1206 resistors. Order online or contact us at contact@lys-sz.com for reel / tray pricing. Worldwide shipping from our Shenzhen warehouse.
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