4N25 Optocouplers, DIP-6 and SOP-6 Selections
Browse 4N25 optical-isolation chips and related 4N-series optocoupler selections. This collection brings together single-model 4N25/EL4N25 lots, menus offering 4N25 alongside 4N26–4N40 relatives, and boxed mixed optocoupler assortments. A few broad menus also offer PC817, TLP, 6N, MOC and HCPL variants; not every selectable item in a 4N25 collection is a 4N25.
Select the precise part number
Many DIP-6 product titles list several 4N part numbers, while the option labelled “Color” actually selects one code. Choose 4N25 or EL4N25 explicitly when required; 4N35, 4N32, 4N38 or 4N40 are separate devices rather than additional chips automatically included in the same lot. One 4N25/EL4N25 product offers a single-model 10-piece selection. Other listings present five-, ten-, twenty-, fifty- or five-hundred-piece 4N25 choices, while some large-lot headings specify 500 pieces. Read the selected model and lot quantity together. Generic seller category labels such as “voltage regulator” and “photovoltaic” do not by themselves describe the actual selected device's output topology.
Package and functional boundaries
Most 4N25-family offers are identified as through-hole DIP-6. A model-and-package menu also offers 4N25 SOP-6, and another lists 4N25S-TA1 as SMD-6. A headline mentioning DIP and SOP does not ship both; confirm package, pin layout and physical dimensions for your PCB. One title mentions DIP8 despite offering 4N-family selections described elsewhere as DIP-6, so resolve that conflict against the exact variant and manufacturer datasheet. Other menu choices such as PC817B/C, TLP521, TLP627, 6N137, TLP250, MOC302x and HCPL3120 have different packages or output functions. In particular, an optotriac driver or isolated gate driver is not a drop-in 4N25 phototransistor optocoupler.
Mixed optocoupler kits
Several boxed kits advertise ten models with five pieces each, totaling fifty parts, combining 4N25 with 4N35 and MOC-family choices. One 4N-series assortment offers either five or ten of each listed model. A kit's total quantity is not the quantity of 4N25 chips. Some headings repeat MOC3052 or show inconsistent MOC363/MOC3063 spelling, and certain seller descriptions allow variation in counts or models; confirm the actual component breakdown when purchasing for a fixed bill of materials.
Frequently asked questions
Does a 4N25/4N35 listing supply both models?
Not if its variant selector chooses one code. An explicitly itemized assortment is different from a single-model lot.
Is SOP-6 4N25 interchangeable with DIP-6 4N25?
Do not assume a physical drop-in fit. Check the exact package drawing, pin assignment and electrical specifications before substituting.
How do I compare 4N25 with 4N35?
Use the full manufacturer part numbers and datasheets to compare input LED requirements, current transfer ratio, output limits and timing in your circuit; shared pin count is insufficient.
Does a fifty-piece mixed kit include fifty 4N25 chips?
No. Ten models at five pieces each would advertise five of the 4N25 model if included; verify the seller's itemized contents and possible substitutions.
For safety-related isolation, verify the complete circuit and manufacturer documentation. Seller claims about certification, originality or ratings are not verified across this collection.
