Darlington NPN Power Transistor Pair
Darlington NPN Power Transistor Pair
This TIP120 and TIP122 transistor set features two powerful NPN Darlington pair transistors in a TO-220 package, ideal for high-current, high-gain applications in electronic projects and industrial control circuits. Designed for efficient switching and amplification, these transistors offer robust performance in motor control, LED driving, solenoid actuation, and power regulation tasks.
Product Highlights:
Transistor Types: TIP120 & TIP122
Configuration: NPN Darlington Pair
Package: TO-220
Maximum Collector Current (Ic): 5A
Collector-Emitter Voltage (Vce):
TIP120: 60V
TIP122: 100V
DC Current Gain (hFE): Up to 1000
Complementary Use: These transistors are often used together for mutual supplementation in high-efficiency circuit designs where TIP120 handles lower voltage tasks and TIP122 manages higher voltage loads.
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PCB Layout & Design Services
We provide professional PCB layout and design services for electronics projects, prototypes, and small to medium production needs. Our goal is to deliver accurate, manufacturable, and well-documented PCB designs tailored to your specific requirements.
How to Request a PCB Layout/Design:
- Send your complete schematic or diagram via our Facebook page.
- We will assess your diagram and provide a quotation based on the complexity and requirements.
Special Offer for New Customers!!
New customers receive a special introductory discount on their first PCB layout/design project.
This allows us to review your design requirements and build a long-term working relationship.
How to Request a PCB Layout / Design
- Send your complete schematic or diagram via our Facebook page.
- Our team will review your diagram carefully to understand the design scope and requirements.
- A detailed quotation will be provided based on:
-
- Design complexity
- Board size and number of layers
- Components and package types
- Special routing or manufacturing requirements
📌 Providing your diagram is essential so we can give you an accurate and fair quotation.
PCB Layout & Design Requirements
To ensure quality and accuracy, please note the following:
- All schematics must be clear, complete, and properly labeled
- Specify:
- Board dimensions (if available)
- Number of PCB layers
- Preferred components or footprints (if any)
- Hand-drawn, unclear, or incomplete schematics are not accepted
- Rush or urgent requests may incur additional charges
What’s Included in the Design Package
Each completed project includes the following deliverables:
✅ 2D PCB layout images
✅ 3D PCB render images
✅ PCB Gerber files (ready for fabrication)
✅ Bill of Materials (BOM)
✅ Component Placement List (CPL / Pick-and-Place file)
✅ Wiring diagram (PDF)
✅ PCB board layout (PDF)
All files are prepared to be manufacturer-ready and easy to review.
Pricing Information
Pricing is project-based and depends on:
- The submitted schematic or diagram
- Board size and layer count
- Types of components used (SMD, through-hole, fine-pitch, BGA, etc.)
- Design complexity and routing difficulty
📌 Final pricing is confirmed only after reviewing the client’s diagram.
Design Review & Approval Process
Before final delivery:
- The client will receive preview files for checking
- Please review carefully for:
- Errors
- Missing information
- Clarifications or revisions
- Once the design is confirmed and approved, the final files will be sent to the client’s email
⚠️ After final approval, any major changes may be treated as a new request.
Payment Methods
Philippines (Local Clients):
- GCash
- Bank Transfer
International Clients:
- PayPal
📌 Design work starts after payment confirmation unless otherwise agreed.
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