The ETD29 Transformer Horizontal Bobbin (12 Pin) is another widely used bobbin type in transformer designs for applications such as Switched Mode Power Supplies (SMPS) and other high-frequency power conversion systems. Here's a breakdown of its features and specifications.

Features:

• Core Type: ETD29
• Pin Count: 12 pins (dual row configuration)
• Bobbin Type: Horizontal mounting, providing a lower profile on the PCB for space-constrained designs
• Material: High-quality plastic (often UL94-V0 rated) for heat and flame resistance
• Applications: Ideal for power transformers in SMPS circuits, inverters, and converters, where compact, horizontal PCB layouts are preferred
• Winding Support: Multiple winding slots designed to accommodate different primary and secondary windings

Specifications:

• Pin Pitch: Typically around 5 mm (varies by manufacturer), ensuring compatibility with standard PCB layouts
• Dimensions: Standard ETD29 core size, with a bobbin window optimized for winding and high energy efficiency
• Winding Area: Adequate for high-density windings, which is essential for high-frequency transformers
• Mounting: Horizontal bobbin, designed for through-hole mounting on PCBs, ensuring a low-profile setup
• Compatibility: Designed for use with ETD29 cores, which are known for their compact size and good performance in high-frequency applications