RC4558 and JRC4558 Dual Op Amps and IC Kits
4558 dual op amps, selectable chips and mixed electronics kits
This collection combines a selectable RC4558DR IC, standalone JRC4558D/NJM4558D-labelled listings, and assorted electronics kits containing JRC4558 among many other devices. Some multi-model pages offer a JRC4558 selection alongside LM358, NE555, NE5532 and other chips. Do not assume every product supplies an RC4558 or that every part with “4558” in its title has identical provenance, grade, package or performance. Select the exact variant and inspect the contents of the particular listing before purchase.
RC4558DR and JRC4558: related search terms, distinct orders
The long multi-part page containing PCA82C250T, PCA82C251, PCF8563, PGA103U, PL2303SA, PS2502-1, PS9505, REF02AU and other devices offers RC4558DR as one Color selection. Its generic specification calls the item a regulator but does not supply electrical ratings or a clear pack quantity for RC4558DR. Other options on that page are entirely different parts, including interfaces, optocouplers and references. Buying a PCA82C251 or REF02AU choice does not deliver an RC4558. Verify the particular chip marking, physical package, count and source documentation rather than reading every model named in the title as kit contents.
Separate pages headline JRC4558D / NJM4558D as a dual op amp in an advertised SOP8 form, with one page labelled 20PCS and another 100PCS. Their generic specification fields paradoxically say “Package: DIP”; that conflict requires confirmation of the actual shipped package. The source descriptions do not establish that both pages supply identical manufacturer suffixes or that an SOP8 unit will fit a through-hole DIP socket without an adapter. Another single-option listing calls itself OPA2604AQ ceramic-seal double op amp and mentions JRC4558 only as a comparison or possible replacement; its actual named product is OPA2604AQ, not a 4558. Check channel count, pin map and supply/stability limits before substituting any other audio IC.
Mixed-model SOP-8 reel pages: one selection, not a mixed reel
Two pages use a “2500PCS” or “2500PCS/REEL” headline and select JRC4558 or other models such as LM393, LM258, LM358, NE555, NE5532, TL082, MC34063, LM386 and OP07. These are distinct Color choices. A selected NE555 is a timer; an LM393 is a comparator; LM386 is an audio power amplifier, not a 4558 dual voltage-feedback op amp. Neither the shared eight-pin outline nor a shared long title makes these interchangeable. The headline suggests a reel quantity, but generic seller specifications do not independently document received count, reel orientation, exact packaging suffix or tape dimensions for each selected device. Check order quantity and packaging with the specific product offer before planning automated placement.
Assorted DIP IC kits: understand what the stated piece count covers
Several 75-piece / 15-value kit pages list five units each of 15 kinds, including JRC4558 × 5, LM358, LM386, LM324, NE555, NE5532, OP07, comparators, Darlington arrays, switching controllers and audio power parts. The “75 pieces” refers to the entire assortment, not 75 JRC4558 chips. Two source descriptions enumerate MC34063, TDA2822, OP07, JRC4558, NE555, LM358, LM386, NE5532, UC3842, TL494, LM339, ULN2803, ULN2003, LM324 and TDA2030 at five each. A third 75-piece listing has a visibly garbled contents paragraph, including malformed device names and numbers, so its title is not sufficient to verify an identical bill of materials. Confirm the actual packed part markings where the exact 15 values matter.
Other 85PCS kit pages name JRC4558 along with LM358, LM386, LM324, LM393, LM339, NE5532, UA741, TDA2030 and TDA2822. Their brief descriptions do not enumerate the number of each component, so no specific JRC4558 quantity should be inferred from “85PCS.” A mixed kit is a bench assortment for evaluation or repair inventory, not a bag of 85 interchangeable op amps. Comparators are not op amps, and timers, drivers and power amplifiers require their own circuits and supplies. Generic “0°C–70°C” or “supply voltage: Voltage” seller fields on a kit page cannot be assigned to every included IC.
Several 150-piece boxed-assortment pages provide a more detailed inventory: PC817C optocouplers 20; ICL7660S charge-pump devices 2; NE555 timers 20; LM358 dual op amps 10; LM324 quad op amps 10; JRC4558 dual op amps 10; LM393 comparators 10; LM339 comparators 10; NE5532 dual op amps 5; LM386 audio amplifiers 5; TDA2030A audio amplifier devices 2; TDA2822D devices 5; PT2399 echo processors 3; UC3842AN and UC3843AN controllers 5 each; ULN2003AN and ULN2803APG transistor arrays 5 each. Their list also names DIP4 sockets 2, DIP8 sockets 7, DIP14 sockets 3, DIP16 sockets 3, DIP18 sockets 2 and a DIP8-to-SOP8 adapter 1. On the pages that spell out this list, 132 listed ICs plus 18 sockets/adapters produce the advertised 150 pieces. It is not 150 loose JRC4558 chips, nor 150 ICs plus free sockets. The contents paragraph itself inconsistently labels LM393 as DIP14 and LM339 as DIP8; verify each actual package and socket pairing before use instead of relying on those swapped-looking labels.
A separate 150-piece product says the assortment can be “customized,” but its only visible Color choice is “Package”; that selector does not provide an item-by-item build list. The product's generic text also calls the set both DIP and SMD. Do not infer that a custom selection was placed, that every IC is SMD, or that the count and included adapter match the detailed boxed listings unless its own listing confirms them. Another 150-piece listing promises “send clip send adapter,” while the enumerated content names sockets and one adapter but no independently specified clip; do not assume any additional accessory is included beyond the verified product offer.
Electrical fit of a 4558-family dual amplifier
For an audio preamp, active filter, signal conditioner or repair, first identify the original device's pin assignment, supply rails and allowable input common-mode voltage. Evaluate output voltage swing against the actual load and available supply, and confirm gain-bandwidth, slew rate, noise, input bias, offset and stability at the circuit's intended closed-loop gain. A dual eight-pin device has two amplifier channels, but its supply and channel pins are not those of an LM386 power stage, a NE555 timer or an LM393 comparator. Do not infer rail-to-rail operation, headphone/speaker drive, single-supply behavior or a specific THD/noise figure for RC4558DR from a generic seller label.
The JRC4558/NJM4558 search name on a seller title does not by itself prove a particular manufacturer, lot date or grade. Suffixes such as DR and D may encode important packaging or supply-chain distinctions; compare the actual marking and up-to-date manufacturer's documentation. A nominal pin-compatible swap can still change feedback stability, bias-related DC offset, maximum supply, output load performance or board clearance. Subjective “upgrade” language and a ceramic-package claim on a different OPA2604AQ offer are not evidence of measurable audio improvement or direct compatibility with a 4558 socket.
Selection and receiving checklist
- Choose purchase format: loose RC4558DR selection, JRC/NJM4558D-labelled pack, mixed-model SOP-8 page, or complete 75/85/150-piece assortment.
- Confirm count: a kit's total piece count is not the JRC4558 count; a reel headline is not independent verification of received quantity. Use the particular variant and packing list.
- Check package: SOP/SOIC versus DIP, body and pin pitch, pin 1 orientation, tape versus loose parts and adapter inclusion. Seller fields may conflict.
- Check circuit specifications: supply voltage, input common-mode range, output swing, noise, gain-bandwidth, stability and load for the exact device and design.
- Check provenance: claims of “new,” “original,” certification or direct replacement require lot-specific supporting evidence when traceability is necessary.
- For mixed kits: sort and verify the markings before powering any circuit. A controller, optocoupler, comparator and op amp can have similar package outlines yet entirely different electrical functions.
Frequently asked questions
Does every item in this series contain an RC4558DR? No. Only a specific option on one multi-part listing names RC4558DR. Other pages feature JRC4558-containing kits, JRC/NJM4558D packs or unrelated selectable parts.
Is a 150-piece kit a pack of 150 JRC4558 op amps? No. Detailed kit inventories list 10 JRC4558 devices and include many other IC types plus sockets and an adapter in the total piece count.
Do 75-piece and 85-piece kits include the same number of JRC4558 chips? The well-enumerated 75-piece versions list five. The 85-piece pages do not provide a per-type count, so their JRC4558 quantity cannot be confirmed from those descriptions.
Can I order any variant on the RC4558DR multi-part page and receive a 4558? No. The selector has many unrelated semiconductor part numbers; choose RC4558DR specifically.
Are JRC4558D SOP8 and DIP8 the same physical package? No. Listings with SOP8 titles but DIP generic fields are internally inconsistent; confirm what ships before choosing a board footprint or socket.
Does “2500PCS/REEL” imply all ten chip models are mixed in the reel? No. The model dropdown selects one named device. Confirm the particular part and reel count with the offer.
Can I replace a 4558 with OPA2604AQ, NE5532 or LM358 without checking? No. Compare actual package, channel pins, rails, common-mode range, compensation, noise, output load and circuit behavior. A similar package is not a universal drop-in promise.
Yoeruyo keeps the existing assortment while clarifying what each offer actually represents. Choose a specific device or an explicitly itemized kit, then validate the exact component against its datasheet and intended circuit.
