RTL8156BG-S
Alternative package option for RTL8156B with same 2.5GbE performance
Product Overview
Description
The Realtek RTL8156BG-S offers the same 2.5 Gigabit Ethernet performance as RTL8156B in an alternative package option for specific layout requirements.
This variant provides flexibility for PCB layouts that may benefit from different pinout or package dimensions while maintaining full feature compatibility.
RTL8156BG-S is fully software and driver compatible with RTL8156B, allowing interchangeability based on mechanical constraints.
Product Series
RTL
Primary Application
High-speed docking stations
Key Features
- 2.5 Gigabit Ethernet support
- Alternative QFN-48 package
- Software compatible with RTL8156B
- USB 3.0 SuperSpeed interface
- Backward compatible
- Low power consumption
- Wake-on-LAN support
- VLAN tagging support
Specifications
| Interface | USB 3.0 |
|---|---|
| Speed | 10/100/1000/2500Mbps |
| USB Compatibility | USB 3.0/2.0 |
| Auto-Negotiation | Yes |
| Wake-on-LAN | Supported |
| VLAN | 802.1Q |
| Power Consumption | <1.5W active |
| Operating Temperature | 0°C to +70°C |
| Package | QFN-48 |
| ESD Protection | 4kV contact, 8kV air |
Applications
High-speed docking stations
Electronic system design
Gaming systems
Electronic system design
Content creation workstations
Electronic system design
Custom PCB designs
Electronic system design
Space-constrained applications
Electronic system design
FAE Expert Insights
"RTL8156BG-S provides layout flexibility when RTL8156B package doesn't fit. Same electrical performance and software compatibility. Contact us to discuss which package is best for your specific PCB layout requirements."
Alternative package for layout flexibility
— David Liu, BeiLuo
Frequently Asked Questions
What is the difference between RTL8156B and RTL8156BG-S?
The only difference is the package. RTL8156BG-S uses QFN-48 while RTL8156B uses QFN-40. Electrical performance, features, and software/drivers are identical.
Choose based on PCB layout requirements. Both offer same performance.
Are RTL8156B and RTL8156BG-S interchangeable?
They are software and driver compatible but not pin-compatible due to different packages. PCB redesign is required to swap between them.
Select the appropriate package during initial design. Not drop-in replacements.
Which package should I choose?
Choose based on your PCB layout constraints. QFN-40 (RTL8156B) is more compact. QFN-48 (RTL8156BG-S) may offer better thermal performance or routing options.
Contact BeiLuo FAE for package selection guidance based on your specific layout.
Is there a cost difference between the packages?
Pricing is generally similar between RTL8156B and RTL8156BG-S. Contact BeiLuo sales for current pricing and volume discounts.
Select based on technical requirements rather than cost. Contact sales for pricing.
Do both packages have the same thermal characteristics?
Thermal performance is similar, but QFN-48 may have slightly better heat dissipation due to larger package size. Both are suitable for standard applications.
Both suitable for standard use. QFN-48 may be better for thermally challenging designs.