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Collector-Emitter Cut-Off Current Specification (Ices) – STR1550 & STR2550

MahdiL
Visitor

‎2025-10-28 8:55 AM - last edited on ‎2025-10-28 9:08 AM by

Dear STMicroelectronics Community,

I hope you are doing well.

I am currently reviewing the datasheets for your STR1550 and STR2550 transistors. While both documents provide detailed electrical characteristics, I noticed that the collector-emitter cut-off current (ICES) is not specified.

Could you kindly confirm the ICES values for both the STR1550 and STR2550?

This information is important for our qualification and comparison process.

Thank you in advance for your assistance.

Best regards,

MahdiL

 

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Peter BENSCH
ST Employee

‎2025-10-28 9:30 AM

Welcome @MahdiL, to the community!

Please note: ICEO (collector-emitter cut-off current) and ICES (collector-emitter cut-off leakage current) are not the same thing.

  • ICEO = (1+β)ICBO
    ICEO depends on the current amplification β of the respective device; ICBO is specified in the data sheet.
  • ICES only applies to reverse operation and is not typically specified in the data sheet

Does it answer your question?

Regards
/Peter

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