SURFCOIL® Professional Grade SMT Inductors And Transformers

INTRODUCTION

Engineering Bulletin SG-890 describes a wide range of fixed and variable surface mount inductors, coils, transformers and filters. Parts are wound as air coils, or on a selection of ferrite cores, and can be used up to the GHz frequency range.

These SURFCOIL® models operate over the professional grade temperature range of -40° to +125°C. (Sprague-Goodman's selection of SURFCOIL SMT chip inductors, which operate over the temperature range of -25° to +85°C, are described in Engineering Bulletin SG-800.)

Our products are used in telecommunications and electronic engineering as frequency-selective components consisting of individual or coupled resonant circuits. Non-tunable tapped coils and coils with multiple windings are also required for applications such as DC isolation, voltage and current transformations and impedance matching (between amplifier stages, for example).

Fixed inductors are used in all areas of telecommunications, video and medical electronic equipment. They are ideal in radio interference suppression devices, filters, and decoupling of oscillator and amplifier stages.

If the component you need for your design is not shown in this bulletin, let us know - the design you need may already be in our design file, or we will design a special to your specifications.

SPECIFICATIONS:

Unless otherwise stated, the electrical data are to be considered as typical values at the nominal inductance value. Inductance and the Q are measured at a low test voltage and the appropriate frequency.

Current rating is determined by either or both of the following conditions:

1. Inductance value reduced by 5% from saturation effect.
2. Self heating raises SURFCOIL temperature 20°C.

SURFCOIL® PROFESSIONAL GRADE SMT INDUCTORS AND TRANSFORMERS

Engineering Bulletin SG-890 Contents

• Introduction
  
  
• Surface Mount Air Coil – GLSM Series: 3.7 x 3.1 x 3.2 and 7.1 x 3.1 x 3.2 mm
• Surface Mount Inductor – GLST Series: 5.6 x 4.0 x 3.1 mm
• Surface Mount Power Inductor – GLSP Series: 4.8 x 4.0 x 5.0 mm
• Surface Mount Power Inductor – GLSX Series: 8.5 x 8.0 x 5.5 mm
• Surface Mount Inductor – GLSH Series: 11.9 x 9.6 x 5.2 mm
• SMD Tunable RF Coil – GLSV & GLSA Series: 5.0 x 5.0 x 5.1 mm
• Surface Mount Transformers – GLSG Series: 4.4 x 4.4 x 3.3 mm
• Surface Mount Transformers – GLSZ Series: 4.5 x 3.4 x 3.1 mm
  
  
• Surface Mount Wideband Transformers
  • Transformer with 2 Windings – GLSW Series: 4.5 x 4.5 x 2.8 mm
  • Transformer with 2 Windings and Tap – GLSB Series: 4.5 x 4.5 x 2.8 mm
  • Balun Transformer – GLSU Series: 4.5 x 4.5 x 2.8 mm
  • Power Splitter – GLSD Series Couplers: 4.5 x 4.5 x 2.8 mm
  • Directional Couplers
    • GLSL Series: 4.5 x 4.5 x 2.8 mm
    • GLSN Series: 5.7 x 5.7 x 3.9 mm
    • GLSY Series: 6.5 x 5.7 x 3.9 mm
  • 180° Hybrid Coupler – GLSJ Series: 6.5 x 5.7 x 3.9 mm
    
    
• SMD Toroidal-Core Transformers and Chokes
  • Transformer with 2 Windings – GLSF Series: 10.8 x 8.8 5.5 mm
  • Transformer with 3 Windings – GLSK Series: 10.8 x 8.8 5.5 mm
  • Current Compensated Toroidal-Core Choke – GLSC Series: 10.8 x 8.8 x 5.5 mm
  • Current Compensated Toroidal-Core Transformer – GLSE Series: 17.8 x 14.3 x 8.8 mm
    
    
• Carrier and Reel Specifications