# Compact Cassette Type IV

> Cassettes conforming to IEC Type IV specification (very high bias), based on metal particles or (rarely) evaporated metal formulation

**Wikidata**: [Q61996946](https://www.wikidata.org/wiki/Q61996946)  
**Source**: https://4ort.xyz/entity/compact-cassette-type-iv


## References

1. [Source](https://books.google.ru/books?id=QSQEAAAAMBAJ&pg=PT99)