IRF540N MOSFETs, TO-220 Packs and Switch Modules
Find IRF540N N-channel power MOSFET choices in through-hole TO-220 packs, alongside related IRF540NS surface-mount parts, IRF-series assortments and IRF540N-based switch modules. Choose the exact selected part or module: a product title containing IRF540N does not mean every variant is an IRF540N transistor. Several shared menus offer other model numbers, while some explicitly described kits combine multiple types.
IRF540N formats in this collection
- Discrete TO-220 IRF540N: single-model listings and selectable IRF540N or IRF540NPBF variants offer packs such as 5, 10, 20, 30, 50 or 100 pieces depending on the page. TO-220 is a through-hole package; use the chosen variant's actual count, not a range in a shared headline. One listing offers “large chip,” “small chip” and related labels instead of a verifiable manufacturer part or die specification; confirm exactly what is being supplied before treating those as electrical grades.
- Surface-mount relative: IRF540NS / IRF540NSTRPBF listings specify TO-263 and include options from individual quantities to 500- or 1,000-piece lots. TO-263 is not footprint-compatible with TO-220. Do not assume IRF540, IRF540N and IRF540NS are the same ordering code or have identical performance without checking their respective datasheets.
- Assembled switch boards: one-channel and four-channel IRF540N module selections, including optocoupler-isolated versions, are assembled boards rather than loose TO-220 transistors. The “1 channel” or “4 channel” option determines the board configuration; verify its board-level supply, input interface, isolation arrangement and thermal/load limitations separately from the MOSFET's component rating.
- Assorted kits: explicitly described 30-, 50- or 60-piece multi-value TO-220 kits may include IRF540N among other models, including P-channel parts such as IRF9540N. Confirm the per-model breakdown and package. A 10-piece menu with an IRF540N choice ordinarily means ten of that selected model, not ten assorted types.
Shared listing boundaries
Multi-model menus also offer IRF520N, IRF530N, IRF630N, IRF640N, IRFZ44N, IRF3205 and other N-channel devices, plus P-channel IRF4905, IRF9530N or IRF9540N. Some titles mention IRF540N but the available options show only IRF540 (without N) or entirely different models; do not infer an IRF540N choice from those headlines. A separate shared menu offers LM317T and MC7812/MC7815 voltage regulators, E13009 bipolar transistors, and BTA24/BTB16 triacs, none of which is IRF540N. Seller labels such as “original,” “large chip” and a quoted 100 V/33 A headline are not collection-wide guarantees or a substitute for the selected device's datasheet.
Selection checklist
- Confirm that the chosen option explicitly identifies IRF540N or IRF540NPBF if that is on your bill of materials; verify its quantity, condition and TO-220 package. For an IRF540NS order, confirm TO-263 footprint and marking.
- Compare the selected manufacturer's VDS, ID at specified case temperature, RDS(on) at the available gate voltage, gate charge, safe operating area and thermal resistance to the intended operating conditions. VGS(th) alone does not establish low on-resistance at a low-voltage logic output.
- Check pinout, mounting tab, heatsinking and package dimensions against the board. For modules, use the module's own electrical and thermal specifications; a transistor's headline current does not establish a board's continuous-load rating.
- Clarify mismatches in title, option or total-piece count before ordering, especially if a title says IRF540N but its choices omit the N suffix.
Frequently asked questions
Does every listing here contain loose IRF540N MOSFETs?
No. There are IRF540NS SMD packs, switch modules, mixed kits and shared pages with other selected components. Check the exact variant.
Can I use IRF540NS on a TO-220 footprint?
No. The listed IRF540NS is TO-263 surface mount, while the discrete IRF540N listings specify TO-220 through-hole. Compare both footprints and datasheets before substitution.
Does “10PCS IRF540N IRF9540N” supply both models?
Only if the selected offer explicitly describes a mixed kit. A model selector generally supplies ten pieces of the one chosen model; IRF9540N is P-channel, not IRF540N.
Is an IRF540N module rated for the same current as a loose transistor?
Not by default. Board traces, connectors, gate drive and thermal design set module-level limits. Refer to the particular module's specifications rather than a transistor headline rating.
