MOSFET Transistors, Power FETs and Assortment Kits
Browse discrete MOSFET transistor packs and selected assortment kits for surface-mount and through-hole designs. The selection includes N-channel models such as IRFZ44N, IRF540N, IRF3205, AO3400, SI2300 and 2N7002, alongside P-channel models including AO3401, AO3407, IRF4905 and IRF9540N. Choose the actual model and pack size from each product's options: a shared title with many part numbers normally represents a choice of one part, whereas listings explicitly described as 40-, 50- or 60-piece assortment kits may contain several types. Check each kit's itemized contents; some named kits include P-channel parts.
Find the right format
- SOT-23 and compact SMD: AO3400/AO3402 and SI2300/SI2302 are N-channel choices, while AO3401/AO3407 and SI2301 are P-channel choices on shared menus. Options often use “Color” or “Voltage” to mean model or quantity, with pack sizes from 10 to 1,000 pieces on certain pages. A displayed top marking is not by itself proof of exact identity.
- Through-hole power: TO-220, insulated TO-220F, TO-247 and TO-3P choices cover distinct IRF-, IRL-, FQP- and other model families. Different part numbers, even those sharing a package, require separate electrical and pinout checks. IRLZ and IRFZ variants are not automatically interchangeable at the same gate-drive voltage.
- Surface-mount power: TO-252/DPAK, TO-263 and SOP-8 options include AOD, NCE, IRF/IRLR and AO44-series parts. Check the exact footprint and whether a listing is a single MOSFET, dual-device package or separate selected model. BF998 is a specialist dual-gate RF device, not a generic power-switch replacement.
Distinguish kits, single-model packs and other components
A “10PCS” menu with choices such as IRF530N, IRF540N or IRF4905 generally supplies ten of the chosen model, not ten different devices. Dedicated assorted TO-220 kit listings describe multiple values; verify the per-model breakdown and total count instead of assuming every part named in a title is included. Some product pages have conflicting quantity wording, including an AO3400A title mentioning both 3,000 and 100 pieces. This collection also contains non-MOSFET components: TIP-series and NJW audio transistors, MJ802, BC-series and MJD44H11G are bipolar transistors; 2SK117 is a JFET; L78xx/L79xx and LM317T are voltage regulators; GT50JR22 and IRGP4063-family listings are IGBTs. Other shared selections include P-channel devices, diodes and TL431. These parts remain on their listed pages but should not be ordered as discrete MOSFET substitutes.
Engineering selection checklist
- Confirm the exact selected model, polarity, device type, count and whether the offer is an assortment or a single-model pack.
- Match VDS, current rating at relevant case or ambient conditions, RDS(on) at the available gate voltage, gate charge, power dissipation, safe operating area and switching needs to the selected manufacturer's datasheet. Seller headline ratings and “original” claims do not establish a guarantee for every option.
- Check package, tab connection, pin assignment and thermal path before replacing a TO-220 with TO-220F, a TO-252 with TO-263, or an SMD part with a through-hole device.
- For P-channel, dual-gate RF, dual MOSFET, JFET, IGBT or bipolar listings, use the appropriate device-specific datasheet. Similar-looking three-lead parts do not imply compatible behavior.
Frequently asked questions
Is every product in this collection an N-channel MOSFET?
No. Both N- and P-channel devices are offered, plus some other semiconductor types and regulator assortments. Check the selected model rather than the collection label alone.
Does a title listing ten model numbers mean a mixed kit?
Usually not. A model selector normally supplies the chosen part at the stated quantity; a kit must explicitly specify its assortment and per-model contents.
Can IRFZ44N and IRLZ44N be swapped without checking a datasheet?
No. Compare gate-drive requirements, on-resistance under your drive conditions, package and pinout using the selected part's datasheet.
What if the title and options disagree on count or package?
Treat the selected option and its confirmed product details as the ordering reference; clarify any conflict before purchase rather than relying on a headline quantity or generic package label.
