4N35 Optocouplers, DIP-6 and SMD Options
Explore 4N35-family phototransistor-output optocouplers in through-hole and surface-mount packages, plus related model-selection listings and mixed optocoupler kits. This collection includes individual 4N35 and EL4N35 offers, menus for 4N25 through 4N40 devices, assorted 4N-series and MOC-series IC kits, and a PC817 isolation board listing. A shared product heading names available choices; it does not mean every order contains every model or even a 4N35.
Choose the exact chip and package
Single-model listings include 4N35 and EL4N35 in DIP-6 or SOP-6/SMD-6 outlines, with quantity options such as 5, 10, 30, 50, 80, 100, 200 and 500 pieces on different products. Multi-model menus offer 4N25, 4N26, 4N27, 4N28, 4N32, 4N33, 4N35, 4N36, 4N37, 4N38 and sometimes 4N29, 4N30, 4N31, 4N39 or 4N40. The field labelled “Color” often selects an IC code, package or count, not its body color. Select the exact 4N35 DIP-6 or SOP-6 variant where specified, and check the product's lot quantity separately. Do not infer that a heading mentioning DIP-6 and SOP-6 ships both formats; one listing even calls out DIP8 in its heading while its selectable family is described as DIP-6, so confirm the selected footprint before ordering.
Assortment kits and other optical devices
Some boxed sets are advertised as 10 models with five of each, totaling 50 pieces, while another offers 10 models at either five or ten pieces each. Kits mixing 4N25/4N35 with MOC302x, MOC304x, MOC305x and MOC306x devices are not 50 pieces of 4N35. Some kit headings repeat or misspell model codes, and some seller descriptions warn of substitutions or count variation; confirm the itemized contents if an exact bill of materials matters. Broad menus also include PC817, TLP521/TLP627, 6N137, TLP250 and HCPL3120 options. MOC triac-output devices and gate-driver optocouplers have different functions from a 4N35 phototransistor output. A PC817 multi-channel isolation board is an assembled module, not a DIP-6 4N35 chip.
Selection and compatibility
Compare the complete part number and manufacturer datasheet for input LED drive, current transfer ratio, output type, pin assignment, isolation requirements and mechanical outline. Neither a matching six-pin outline nor a similar 4N number proves interchangeable timing, voltage limits or transfer characteristics. Do not treat generic seller fields marked “voltage regulator,” “30V,” “5kV,” or “new original” as verified collection-wide specifications or certification. Validate isolation at the finished-system level, particularly for safety-critical designs.
Frequently asked questions
Does a 4N25/4N35 listing supply both chips?
Not when its variants select one model. The chosen variant is the supplied model; only an explicitly itemized mixed kit is an assortment.
Is 4N35S-TA1 a DIP-6 part?
The listings associate that suffix with SMD-6. Check the manufacturer's package drawing and the variant label before laying out a board.
Can I replace 4N35 with a MOC3021 or PC817 module?
Do not assume so. A MOC-series triac-output device and a PC817 assembled module are different product types; evaluate the exact function and circuit requirements.
How many 4N35 chips are in a 50-piece kit?
A 10-model, five-each kit advertises five of each listed model, not fifty 4N35 chips. Verify its actual breakdown, especially where the seller notes possible variation.
