ROHM QSZ1 User Guide and Manual
Summary
These general-purpose silicon epitaxial transistors are designed for demanding power applications, including DC/DC converters and motor drivers. Featuring low saturation voltage (VCE(sat)) and a compact TSMT5 package, they deliver high performance in a small form factor. This comprehensive manual provides detailed electrical specifications, absolute maximum ratings, and usage curves necessary for electronics engineers designing robust control systems and power management circuits.
Page 1 Text Content
Transistors
General purpose transistor QSZ1 A 2SB1690 and a 2SD2653 are housed independently in a TSMT5 package.
Applications External dimensions (Unit : mm)
DC / DC converter QSZ1
Motor driver 2.8 1.6
Features 1) Low VCE(sat) 2) Small package
ROHM : TSMT5 Each lead has same dimensions
Structure
Abbreviated symbol : Z01 0. 0.
Silicon epitaxial planar transistor
Equivalent circuit (5 (4
Tr1 Tr2
Packaging specifications Type QSZ1 Package TSMT5
Marking Z01 Code TR
Basic ordering unit(pieces)
Page Summary Contents For ROHM QSZ1 User Guide and Manual
Manual Details
| Brand | ROHM |
|---|---|
| Pages | 5 |
| File Size | 83.94 KB |
| Published | June 17, 2026 |
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Frequently Asked Questions
What package does the QSZ1 transistor use?
It uses the ROHM TSMT5 package, with each lead having the same dimensions.
What is the max collector current for Tr1?
Tr1 has a maximum collector current of -2A and a pulse current of -4A.
What are typical applications for the QSZ1?
Typical applications include DC/DC converters and motor drivers.
What is the max junction temperature for Tr2?
Tr2 has a maximum junction temperature of 150°C.