NSi8100N Isolator Chip for Antminer Bitmain APW17 Power Supply Unit

NSi8100N Isolator Chip | High-Voltage Replacement for Antminer Bitmain APW17 PSU

The NSi8100N is a high-reliability bidirectional digital isolator designed as a direct replacement for damaged isolation circuitry on the Antminer Bitmain APW17 power supply. With 5kVrms insulation, a 2MHz I²C clock frequency, and 150kV/μs common-mode transient immunity (CMTI), it delivers ultra-stable performance across the harsh thermal and electrical environment of an ASIC mining PSU — keeping downtime low and mining efficiency high.

Engineered with enhanced EMC performance (ESD, EFT, surge-resistant), low power consumption (1.5mA per channel at 1Mbps), and a wide operating range from -40°C to +125°C, the NSi8100N is a workhorse line-replaceable part for APW17 repair workflows. It also fits cleanly into PoE systems and battery-management applications where bidirectional I²C isolation across high-voltage barriers is required.

5kVrms Isolated I²C Chip for Reliable Antminer Bitmain PSU Repairs

• Direct replacement for damaged APW17 PSU components — drop-in for the original footprint.
• Ultra-high insulation — 3.75kVrms and 5kVrms options for high-voltage isolation barriers.
• Low power consumption — 1.5mA per channel at 1Mbps keeps drive losses under control.
• Wide operating temperature range — -40°C to +125°C for harsh mining-farm conditions.
• Enhanced EMC performance — ESD, EFT, and surge-resistant for reliable continuous duty.

NSi8100N Use Cases Beyond APW17

The same combination of high CMTI, low propagation delay (<15ns), and ±6kV ESD protection (HBM) makes the NSi8100N an excellent choice for PoE systems, industrial battery management, and any mixed-voltage I²C bus where galvanic isolation is required. The 2.5V to 5.5V supply range covers most modern logic rails directly, and the bidirectional capability simplifies layout when both controller and target devices need to communicate across the isolation barrier.

NSi8100N Isolator Chip Specifications

Related products

• SI8261BBD 5kV Gate Driver – Whatsminer P21 PSU
• LTV-817C Optocoupler – APW8/APW9/APW17 PSU
• STP6N95K5 950V MOSFET – APW12 PSU
• IXFP4N85X 850V MOSFET – Mining PSU

APW17 repair shops ordering NSi8100N in volume can email contact@lys-sz.com for bulk pricing and matched PSU repair kits. Worldwide shipping from our Shenzhen warehouse.