2N7002 N-channel MOSFET family connection guide

• Load supply
  • Current-limited 5 V supply
  • RL.1
• Drain
  • 3 D
  • RL.2
  • Meter positive
• Gate drive
  • → 1 G
  • Switchable 0 V / 10 V drive
• Return
  • 2 S
  • Meter common
  • Gate supply return
  • Load supply return

Bench checks

• At 0 V gate drive, the drain should be near 5 V. At 10 V the drain should fall close to ground.
• This is a function check at roughly 5 mA. Check the exact device limits before choosing a logic-level gate drive or a higher load.

MCC 2N7002T Rev. 3-1 (2019-01-01), equivalent circuit and electrical characteristics. Supply and load values are fixture choices.

External wiring example · Check low-side switching

Highlighted contacts are used in the required step or selected circuit. Select a contact to highlight its wiring nets.

The reported K72 K 4 has three leads (1+2). That fits the documented single MOSFETs in SOT-23, SOT-323 or SOT-523 and rules out the six-lead 2N7002DW for this specimen. Measure the moulded body, excluding leads: roughly 2.9 mm for SOT-23, 2.0 mm for SOT-323 and 1.6 mm for SOT-523. Diodes documents K72 plus a separate two-character date code; the format alone does not identify the manufacturer.

2N7002T-TP

MCC SOT-523 with K72 device marking. The index dot position changed in ECN 062121-1.

• Datasheet for PANJIT 2N7002K· Rev. 00S; SOT-23 pinout, K72 marking and limits.
• Datasheet for PANJIT 2N7002KW· Rev. 02S; SOT-323 pinout, K72 marking and limits.
• Datasheet for Diodes 2N7002· DS11303 Rev. 40-2; SOT-23 pinout and K72 marking.
• Datasheet for JSCJ 2N7002DW· Rev. 1.1; SOT-363 pinout and K72 marking.
• Datasheet for MCC 2N7002T· Rev. 3-1; SOT-523 pinout, K72 marking and ratings.
• MCC 2N7002T marking change notice· ECN 062121-1 confirms K72 for the SOT-523 candidate; the notice is not a pinout.
• Source register· Original document URLs, revisions and file checksums.