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RoHS Lead Free FAQ
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1. What is the deadline for RoHS (lead-free) Compliance?
  • EU: compliance has been required as of 1 July 2006.

  • USA: Federal deadline not set as yet; California, Massachusetts, other States are in process.

  • California required certain products to comply since 1 January 2007.

  • Japanese firms usually require compliance. For China, regulations are pending.

2. Which regulatory standards do Scientific Conversion's parts comply with?

3. When are your RoHS compliant transformers available?

  • All our transformers are now only available RoHS compliant, LF suffix.

  • Regular (non-compliant) types are no longer made.

4. How do they differ from the standard versions?

  • Lead free solder used is industry standard SAC type, instead of tin/lead.

  • Recommended peak reflow temperature is increased to 260C max, 10 sec.

  • Electrical characteristics and mechanical footprint are identical.

  • SC part number has LF suffix added;  i.e. old SC937-02 becomes SC937-02LF.

  • IC tube Packages will be marked with the LF part number and have green end caps.

5. Are they backwards compatible i.e. can the LF version be used with tin/lead solder?

  •  Yes, they are totally "form, fit and function" and pinout backwards compatible!

6. What about compliance documentation, ISO 9002 certification, Quality Supplier Survey, chemical analysis, or complete our spreadsheet?

  • We provide a standard certificate of compliance (C of C) upon request.

  • See the Industry Standard IPC175-2 forms at

  • We can fill out your firm's special compliance and Quality Supplier Survey forms ONLY for orders exceeding 1,000 pc/year.

  • Chemical Composition: Bobbin plastic: Phenolic (PF), Bobbin Pin: Low carbon steel wire: 70%, Cu: 26%, Sn (plating): 4%, Cu (plating):0.01%, Core Clip: Stainless steel: Fe:72% or more, Cr:18%, Ni:8%, Mn: less than 2%, Solder: Sn 96.5%, Ag 3.0%, Cu 0.5%, Ferrite cores: Fe2O4: 70%, MnO: 15%, ZnO: 15%

Copyright 2013 Scientific Conversion, Inc. All rights reserved. Subject to change without notice.






Last revised: 10 April, 2013




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Scientific Conversion is your source for the world's most advanced Digital Audio Transformers: Our broad line of Digital Audio Transformers includes S/PDIF Transformers, AES/EBU Transformer, transformers for conversion between S/PDIF or AES3id (75 Ohm unbal) and AES/EBU (110 Ohm bal), splitters for one AES/EBU input to drive two outputs, Digital Microphone transformer, and custom transformers made to your specifications. Our full line of thru-hole, SMD and RoHS complaint parts are usually available from stock. With over 15 years of Digital Audio Transformer research and manufacture, Scientific Conversions transformers provide your products with a significant (15...35 dB) advantage in jitter, common mode rejection and EMI susceptibility. Please explore all the material in our website, Scientificonversion .com (please note, not Scientificconversion .com!) for the latest in Digital Audio Transformer technology. Digital Audio transformers

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