Bipolar Transistors

Clicking on product's category allows you to see Transistors Part Naming Conventions.

Small-Signal Transistor

Example of JEITA-Registered Small-Signal Transistor
Example of JEITA-Registered Small-Signal Transistor

1. Transistor

2. Circuit configuration

  • A: PNP or similar transistor
  • C: NPN or similar transistor

3. JEITA registration number

4. Revision code

5. Package (may be null)
MFV: VESM (SOT-723)
CT: CST3

Example of In-House-Registered Small-Signal Transistor
Example of In-House-Registered Small-Signal Transistor

1. Transistor

2. Circuit configuration

  • A: PNP or similar transistor
  • C: NPN or similar transistor

3. JEITA registration number

4. Revision code

5. Package
FU: USM (SOT-323, SC-70)

Transistor with built-in resistance (BRT)

Example of Transistor with built-in resistance (BRT)
Example of Transistor with built-in resistance (BRT)

1. RN means Toshiba transistor that has a built-in resistance

2. Polarity
This number shows the polarity of a product.
Products are classified into three types, as shown below, by the polarity.

  • 1: NPN (small-signal)
  • 2: PNP (small-signal)
  • 4: PNP + NPN

3. & 5. Package type

4. Serial number
Serial numbers that start from "A1": Dual
Serial numbers that start from "01": Single

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