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

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

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

  • Japanese firms usually require compliance. 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 available RoHS compliant!

  • Regular (non-compliant) types are still available. Please note RoHS or regular on your PO!

  • Availability: stock ... 4 weeks ARO. Please inquire for latest information.

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. 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" compatible!

6. What about compliance documentation, chemical analysis, complete our spreadsheet....

  • We provide our standard compliance letter, an information sheet and SMD reflow temperature profile. This should provide all necessary information. An LF C of C is available on request.

  • We have IPC 175X forms available in PDF format. See www.ipc.org to utilize this new industry standard. Please email your IPC 175X template. Note that you MUST use Acrobat 7.0!

  • We can fill out your special forms for yearly orders exceeding 1,000 pcs./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 © 2007 Scientific Conversion, Inc. All rights reserved. Subject to change without notice.

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Last revised: 25 April, 2007

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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

Dual Zo Digital Audio transformer Custom and High Voltage transformers Digital Audio transformer Catalog Digital Audio transformers FAQ RoHS compliant lead free Digital Audio transformers Digital Audio transformer News Introduction to Scientific Conversion, Inc. Scientific Conversions Contact information AES 1998 paper "The Effect of Transformers on Transmission of Digital Audio Signals" AES 2001 papers: "Characterizing Digital Audio Transformers with Induced Jitter Histograms" AES 2003 paper: "The Effects and Reduction of Common-Mode Noise and Electromagnetic Interference in High-Resolution Digital Audio Transmission" Scientific Conversion Sales information