Customizable Metal Etching Lead Frames for Medical, Optical, and Aerospace Applications

Lead Frame Overview
A lead frame is the critical internal metal structure within a semiconductor package. It provides the mechanical support for the chip (die) and creates the electrical pathways connecting the die to the external circuit board. Our precision etching technology allows us to manufacture high-quality, reliable lead frames for various semiconductor and microelectronic applications.

Manufacturing Process
We utilize advanced photochemical etching (also known as chemical milling) to produce lead frames. This is a highly precise, stress-free, and burr-free subtractive manufacturing process:

• Material Cleaning: The selected metal coil is thoroughly cleaned.

• Coating: A photosensitive resist is applied.

• Exposure: The resist is exposed to UV light through a photomask with the lead frame pattern.

• Developing: The unexposed resist is washed away, revealing the metal to be etched.

• Etching: The metal is etched away by a controlled chemical spray, forming the intricate lead frame pattern.

• Stripping & Cleaning: The remaining resist is removed, and the finished lead frame is cleaned and inspected.

Lead Frame Features

• High Precision & Complexity: Capable of extremely fine geometries and complex designs without tooling wear.

• Burr-Free & Stress-Free: The etching process produces no mechanical burrs, residual stress, or heat-affected zones, ensuring superior flatness and reliability.

• Material Versatility: Can process various alloys including copper, phosphor bronze, steel, and alloy 42/kovar.

• Rapid Prototyping & Production: Fast turnaround from design to finished parts, ideal for both prototypes and high-volume orders.

• Cost-Effective: No hard tooling required for design changes, reducing cost and lead time.

Lead Frame Specifications

Lead Frame Applications Lead frames are essential parts in: Integrated Circuit (IC) Packaging (QFN, DFN, SOP, DIP, etc.) Discrete Semiconductor Devices (Transistors, Diodes) Light Emitting Diodes (LEDs) Micro-electromechanical Systems (MEMS) Sensors and Micro-modules

Our Advantages

• Unmatched Speed: Rapid response from RFQ to delivery, handling urgent and bulk orders efficiently.

• Commitment to Quality: Stringent quality control ensures high consistency and reliability in every batch.

• Technical Expertise: Deep experience in precision etching for electronics, offering solutions for complex designs.

• One-Stop Service: Comprehensive support from material selection and DFM analysis through to final production.

• Proven Reputation: Recognized by clients for high precision, fast delivery, and the ability to handle a wide variety of requirements.

FAQ

Q1: What are the benefits of etching over stamping for lead frames?
A1: Etching offers superior precision for fine features, eliminates burrs and stress, allows for easier design changes without expensive tooling, and is more cost-effective for prototypes and medium-to-high volumes.

Q2: What file format do you require for production?
A2: We prefer CAD formats (e.g., .dxf, .dwg) or Gerber files for the most accurate translation of your design.

Q3: Can you provide prototypes before full production?
A3: Yes, we specialize in fast-turnaround prototypes to validate your design, typically within days.

Q4: What is your typical lead time for production orders?
A4: Lead times vary based on order volume and complexity. We are known for our rapid production cycles and will always provide a clear timeline upon order confirmation.

Q5: Do you offer material recommendations?
A5: Absolutely. Our engineers can advise on the best material (e.g., thermal expansion matching, conductivity, strength) for your specific application.

Welcome to contact us at any time!