P-Channel MOSFET High-Side Parts and N/P Options

Browse small MOSFETs relevant to high-side switching research, with an important distinction: this collection includes P-channel choices, N-channel choices, a dual N/P device and an N/P expansion board. It is not a set of interchangeable, ready-wired P-channel high-side switches. Choose the exact model and quantity on each listing before designing around it.

What is available here

• Discrete small MOSFET menus: several SOT-23-style listings offer individual selections such as AO3401, AO3407 and BSS84 alongside AO3400, AO3402, 2N7002, BSS138, BSS123 and other codes. The selected option spells out a model and usually 100 pieces; 8205A and 8205S options are labeled 10 pieces. These are model-specific packs, not a mixed assortment of every code in the headline. Check each selected device's polarity and datasheet rather than assigning the entire menu one channel type.
• SSM3J356R: a P-channel SOT-23F listing offers separate 20-, 50- and 100-piece choices. SOT-23F and an ordinary SOT-23 listing are not automatically footprint- or thermal-equivalent.
• DMC2400UV-7: a dual N-plus-P-channel MOSFET array in a SOT-563 listing with 10-, 20- and 50-piece choices. A dual array has a different internal arrangement and pinout from a single three-terminal MOSFET. The seller's headline electrical figures are not a substitute for the exact datasheet.
• Si4599 expansion board: a board-level N/P MOSFET module, not a bag of bare SOT-23 devices. Select 1, 5, 10, 50 or 100 boards according to its variant; inspect board pinout, circuit and dimensions before integration.

High-side selection checklist

First confirm whether the chosen part contains a P-channel device and whether you need a single transistor, dual array or assembled module. Match the full part number, package outline and pinout, then check drain-source and gate-source voltage limits, on-resistance at the actual gate drive, current/safe operating area and thermal path. A P-channel high-side switch needs gate control evaluated relative to its source potential; a microcontroller's 3.3 V output alone does not establish compatibility. For inductive loads, check the specific protection and transient requirements of the design. Seller originality, compliance and headline ratings are not verified across the collection.

Frequently asked questions

Are all the SOT-23 choices P-channel?

No. The model menus contain both N- and P-channel choices. Read the selected model, its quantity and manufacturer's polarity specification.

Does the long model-list headline mean a mixed kit?

No mixed kit is specified by those variant menus. A choice such as 100PCS AO3401 is a specific model-and-quantity option.

Can I substitute DMC2400UV-7 for a single SOT-23 MOSFET?

Not directly. It is listed as a dual N/P array in SOT-563; compare its internal connections, pins and electrical limits.

Is the Si4599 board a standalone high-side switch?

Its listing describes an expansion board, not a universal high-side circuit. Check its actual board schematic, pinout and permitted operating conditions.