LMBR140T1G S7 Schottky Diode for Iceriver KS3M KS5L Hash Board & Whatsminer P222C PSU
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LMBR140T1G S7 Schottky Diode for Iceriver + Whatsminer Repair
The LMBR140T1G S7 Schottky diode is a critical component used on the Iceriver KS3M / KS5L hashboards as well as the Whatsminer P222C power supply unit (PSU). This S7-marked diode in a SOD-123 package provides reliable rectification and protection functions — drop-in replacement during repair and maintenance tasks.
Engineered for low forward voltage drop and low reverse leakage, the LMBR140T1G ensures efficient operation of hashboard power rails and PSU snubber networks. With a 40V reverse voltage rating and 1A average rectified current capability, it supports stable performance under demanding cryptocurrency mining workloads. 30µA reverse leakage current minimizes power loss in always-on rectification paths.
Key Features
- Low forward voltage drop for improved efficiency.
- Low reverse leakage current (IR = 30µA).
- Compact SOD-123 package for space-limited PCB layouts.
- Reliable S7 marking for easy identification during repair.
- Ideal for hashboards and PSU rectification circuits.
Typical Use in Mining Repair
- Iceriver KS3M / KS5L hashboard rectification — replacing failed Schottky on domain power rails.
- Whatsminer P222C PSU repair — secondary-side rectification + snubber network protection.
- Production refurbishment — bulk Schottky inventory for line-based hashboard / PSU rebuilds.
- General low-Vf rectification — power-efficient designs needing 40V / 1A.
LMBR140T1G Specifications
| Parameter | Value |
|---|---|
| Part Number | LMBR140T1G |
| Marking | S7 |
| Type | Schottky barrier diode |
| Package | SOD-123 |
| Reverse Voltage (Vr) | 40V |
| Average Rectified Current | 1A |
| Reverse Leakage Current (IR) | 30 µA |
| Forward Voltage | Low — improved rectification efficiency |
| Compatible Boards | Iceriver KS3M, KS5L + Whatsminer P222C PSU |
| Condition | Brand New |
FAQ — LMBR140T1G Schottky Diode
Q: Where does LMBR140T1G sit in the circuit?
A: On Iceriver KS3M / KS5L hashboards: domain power rail Schottky in low-current rectification. On Whatsminer P222C PSU: snubber network or low-current secondary rectification. Identify by silk marking "S7" on the PCB.
Q: Can I substitute another SOD-123 Schottky?
A: Functionally yes — any SOD-123 Schottky with similar Vr (40V), If (1A), low Vf works. However, the "S7" silk marking identifies this exact part. For OEM-spec repair, stick with LMBR140T1G.
Q: How do I diagnose a failed Schottky?
A: Use multimeter diode mode. Healthy Schottky shows ~0.3V forward drop and infinite resistance reverse-biased. Failed Schottky shows short (0V both directions) or open (infinite both directions). Visible burn marks confirm catastrophic failure.
Q: Bulk pricing for repair shops?
A: Yes — email contact@lys-sz.com with your monthly Iceriver / Whatsminer rework volume for tier pricing.
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Iceriver / Whatsminer repair shops stocking LMBR140T1G by the reel? Email contact@lys-sz.com for bulk pricing. Worldwide shipping from our Shenzhen warehouses.
Buying in bulk for a mining farm or repair shop?
Get dedicated B2B pricing on this part and across our full catalog — quote response within 24 hours, payment by T/T USD bank wire, and DDP delivery available for US & EU customers (and other lanes on request).
