150141YS73100 LED Selection and Procurement Guide

Bottom Line: Choose an indicator LED around three requirements: the color and visibility needed at the viewing surface, the electrical operating point your circuit can support, and the exact mechanical and purchasing identity of the part. For Würth Elektronik 150141YS73100, start with the manufacturer's current datasheet rather than inferring specifications from a neighboring ordering code. The FindMyChip catalog identifies it as an LED but does not provide usable optical or electrical specifications in its short description. Use the related 150141 devices below to organize comparisons, then qualify the exact device, footprint, brightness bin, and delivery format before releasing a production purchase.

Color and Optical Function Come First

The correct LED color is the one that communicates the intended equipment state clearly through the finished enclosure. A power indicator, warning indicator, and communication indicator can need different colors even when they occupy identical PCB positions. Define the meaning of each state before choosing the component so that firmware, artwork, and service instructions stay consistent.

The available catalog entries illustrate why ordering codes need individual review. The 150141GS73100 description lists green light at 525 nm, whereas the 150141RV73100 bi-color description lists red and bright green at 625/570 nm. Those two green wavelengths describe different optical choices; a shared family prefix does not make them visually equivalent. Wavelength, spectral width, lens construction, and the viewing window all influence the result.

Treat a suffix as an identifier, never as the complete specification. In particular, the catalog description for 150141YS73100 is a CAD-download instruction, so it does not establish wavelength, intensity, forward voltage, or current. Record those fields as unverified until the current manufacturer document or a traceable specification supplies them. This prevents a plausible family-level inference from becoming an unsupported drawing requirement.

For a first prototype, define the required viewing distance and ambient-light condition. Compare the assembled indicator at the actual viewing angle, with the final window material in place. A sample that looks satisfactory on an open laboratory bench can look different behind a smoked cover, light pipe, or printed legend.

Luminous Intensity Must Be Compared at the Same Test Current

Brightness comparisons are meaningful only when test current, viewing angle, and measurement conditions are aligned. Luminous intensity in millicandela describes directional light output; it is not an interchangeable measure of total luminous flux or perceived brightness. A narrower beam can increase on-axis intensity without improving an indicator seen from the side.

The catalog's 150141GS73100 entry lists a typical 1,000 mcd at 20 mA and a 120° viewing angle. The related 150141RV73100 entry lists typical red/bright-green intensities of 250/60 mcd at 20 mA, also with a 120° angle. These entries provide useful comparison points, but they are catalog summaries rather than guaranteed production-bin limits. Confirm the minimum, typical, and maximum values in the manufacturer's controlled documentation.

Do not assume that equal mcd values across colors produce equal apparent brightness. Human visual sensitivity and the enclosure's transmission vary with wavelength, and camera-based inspection can respond differently from a human observer. Set acceptance limits around the actual product requirement, then choose suitable bins or a repeatable assembly-level test. For multiple indicators on the same panel, check uniformity as well as the brightness of each individual device.

A practical prototype matrix can test 3 current settings at 2 viewing angles under bright and dim ambient conditions. Those numbers describe a suggested experiment, not a qualification standard. The result lets engineering choose an operating point with evidence rather than increasing current until an exposed LED appears bright enough. Retain photographs and test conditions for purchasing and quality teams.

Forward Voltage and Drive Current Determine the Circuit

The LED's operating current and forward-voltage limits determine whether a resistor drive or regulated current source fits the design. Start from the supply tolerance, driver output characteristics, and LED limits at the intended current and temperature. A typical voltage is useful for an early calculation, but it cannot replace worst-case checks for current or voltage headroom.

The catalog description for 150141GS73100 gives a typical 3.2 V at 20 mA. For an illustrative 5 V supply and 10 mA current, a 3.2 V LED drop would imply a resistor of (5 − 3.2)/0.010 = 180 Ω. Resistor dissipation would be approximately 0.018 W at that assumed point. This example explains the method; it does not establish the voltage of 150141YS73100 or a guaranteed operating point for another ordering code.

Repeat the calculation using the highest supply voltage and lowest credible LED voltage to evaluate maximum current. Then check the lowest supply voltage, highest LED voltage, and driver voltage drop to evaluate available headroom. A nominal 3.3 V rail offers little margin against a typical 3.2 V LED drop, so the resistor method deserves particular scrutiny in that situation. The final decision depends on verified limits and the required brightness consistency.

For PWM dimming, document peak current, duty cycle, and switching behavior separately. Average current alone does not demonstrate compliance with a pulsed-current rating, and changing frequency can affect visible flicker or camera artifacts. Check the controller's output-current capability before driving an LED directly. If a current driver is needed, select it as a separate component class rather than treating an LED-driver IC as an optical replacement.

Package Fit Requires More Than a Family Prefix

Mechanical compatibility depends on the exact package drawing, polarity, land pattern, and assembly orientation. The related catalog entries describe 3528 packages, but this shared designation is only a screening aid. It does not prove that the target device has the same terminal layout, height, optical center, soldering recommendation, or tape orientation.

The 150141RS73100 product record identifies a compact red SMD LED in a 3528, 2-pin package. The 150141RV73100 product record describes a bi-color device, which adds circuit considerations beyond a single-color function. Verify the actual connection arrangement rather than copying a symbol from a neighboring part. A library symbol can appear reasonable while encoding the wrong polarity or internal topology.

Use the manufacturer package drawing to check pad dimensions, solder-mask clearance, component height, and the position relative to a light pipe. Confirm pin numbering and the package polarity mark against the assembly drawing. Then inspect a physical sample against the drawing before accepting a replacement into an existing PCB. This is especially important when the original board leaves little room around the optical opening.

A CAD download can speed library creation, but it is not independent proof of fit. For 150141YS73100, the current catalog summary specifically refers to a symbol, footprint, and 3D-model download. Engineering should verify those assets against the controlled component drawing. Store the checked library revision with the BOM so that future sourcing changes do not silently alter the assembly assumptions.

Temperature and Assembly Limits Need Their Own Checks

A production LED must meet the environmental and soldering conditions of the complete product. Optical performance on a room-temperature bench does not establish behavior inside a warm enclosure. Confirm operating-temperature limits, current derating, storage conditions, soldering profile, and handling requirements for the exact ordering code.

The candidate descriptions do not establish those limits for 150141YS73100. Do not copy a temperature rating or reflow profile from another component simply because both are LEDs in the same family. Ask the assembly partner to compare the approved soldering profile with the board's actual thermal process. Check any moisture-sensitivity and storage instructions before deciding whether opened packaging can enter the normal production flow.

IEC 60068 is a family of environmental test methods, while manufacturer component documentation defines the relevant device limits. Naming a test method does not prove that a component has passed it or that a final product meets its own requirements. If vibration, damp heat, or temperature cycling matters, specify the required test conditions and acceptance criteria explicitly. Keep component-level evidence distinct from completed-product qualification.

A useful acceptance record includes the exact part number, lot reference, measured electrical operating point, and enclosure-level optical result. For a changed supplier or lot, compare incoming samples with an approved reference under the same conditions. This creates a repeatable engineering check without claiming that a visual comparison alone authenticates the device. Procurement should preserve the associated documents for the service life the project requires.

Supply Identity and Documentation Complete the Selection

The selected part must be purchasable under an unambiguous ordering identity with the required evidence. A quotation should state the full manufacturer part number, manufacturer, quantity, packaging, date-code requirements when relevant, and requested supporting documentation. Avoid shortened family names on purchase orders, because a similar-looking suffix can represent a different optical or electrical device.

For 150141YS73100, request the exact datasheet revision and packaging details alongside availability. Check whether the offered quantity comes on an original reel, a cut segment, or another documented format. Ask how lot identity and handling history will be preserved if packaging is split. Those questions support assembly planning and incoming inspection without assuming that every offer carries the same traceability.

The comparison below deliberately reports price as quotation-dependent. The returned candidate list contains no price breaks, current inventory, or committed lead times, so a numeric market-price range would be unsupported. Compare offers at the same quantity and delivery destination, including packaging and documentation requirements. A lower unit price can lose its advantage if it adds line setup, rework, or urgent freight.

FindMyChip supports global engineering and procurement teams from Shenzhen through a network of over 200 verified distributors. Use that channel alongside manufacturer and authorized-distributor documentation when evaluating availability. Supplier screening and authentication processes support sourcing decisions, while engineering approval remains tied to the exact specifications and application. Request confirmation of the available evidence before accepting an offer.

Recommended Products Comparison Table

These five catalog candidates support a structured shortlist, with verification required before any substitution. The table summarizes only attributes available in the returned catalog descriptions; it does not declare pin compatibility, guaranteed bins, live stock, or a drop-in replacement relationship.

Product	Optical Information in Catalog	Electrical Information in Catalog	Package or Beam Information	Price Range	Best For
150141YS73100	Not specified in returned summary	Not specified in returned summary	CAD-download reference; verify drawing	Request quote	Exact-code evaluation after datasheet confirmation
150141GS73100	Green, typical 525 nm and 1,000 mcd	Typical 3.2 V at 20 mA	3528, water-clear, 120°	Request quote	Green indicator shortlist with verified drive margin
150141RS73100	Red, 300 mcd in summary	Not specified in returned summary	3528, 2-pin	Request quote	Red single-color indicator evaluation
150141RV73100	Red/bright green, typical 625/570 nm and 250/60 mcd	Typical 2.0 V at 20 mA in summary; verify each die	3528, water-clear, 120°	Request quote	Two-color state indication after topology review
150141YB73100	Yellow/blue, typical 590/470 nm and 220/240 mcd	Typical 2.0/3.2 V at 20 mA	3528, water-clear, 120°	Request quote	Yellow/blue state indication with separate current checks

Selection Decision Flowchart

Use the exact application requirement to decide whether a candidate proceeds to qualification or returns to the shortlist. If an existing BOM requires 150141YS73100, then first obtain its current manufacturer documentation and confirm that the offered identity matches. Else, if the requirement permits a new indicator choice, define the color, visibility, and circuit constraints before comparing family members.

If the application needs one color, then evaluate single-color candidates such as the green or red entries above. Else, if it needs two states from one optical location, review a bi-color device and verify its terminal topology. If the supply cannot provide worst-case voltage headroom, then revise the current-driving approach or choose a better-suited device. Else, calculate the resistor or driver operating point using verified limits.

If the mechanical drawing and polarity fit the PCB and enclosure, then build and inspect samples. Else, update the layout through the normal engineering change process before ordering a production quantity. If optical tests, assembly conditions, documentation, and delivery format pass, then release the approved ordering code. Else, record the failed requirement so procurement can search for a suitable candidate without repeating unsupported substitutions.

FAQ

Can a nearby 150141 part replace 150141YS73100?

A nearby ordering code is a comparison candidate, not an approved replacement. Confirm wavelength, intensity bin, forward voltage, current limits, polarity, package drawing, and assembly conditions against the target requirements. The catalog shows both single-color and bi-color devices within this family, including different 525 nm and 570 nm green descriptions. Approve a substitution only after checking the exact documents and testing the assembled indicator.

Is a typical 20 mA test point the required operating current?

A 20 mA catalog test point identifies the conditions behind a stated optical or electrical value; it does not automatically define the best application current. A status indicator may meet its visibility requirement at a lower current after enclosure testing. Check the exact datasheet limits, brightness behavior, and driver capability before deciding. For PWM operation, verify peak-current and pulse conditions separately from the average current.

Why does a 3.3 V supply need extra attention?

A 3.3 V supply can leave limited resistor and driver headroom when an LED has a typical forward voltage near 3.2 V. Supply tolerance, temperature, and device variation can then change current substantially. The 3.2 V figure here comes from a related green catalog entry, not a verified target specification. Calculate both current extremes using the selected device's documented limits and evaluate the result on hardware.

Which price and availability information should a buyer request?

Request a quotation for the full manufacturer part number at the required quantity, with packaging, delivery terms, and supporting documentation stated explicitly. Compare at least 2 offers when the project schedule permits, using consistent requirements rather than unit price alone. The candidate data used for this guide contains no live stock or price breaks, so availability and cost must be confirmed through a current sourcing inquiry.

Final Selection and Procurement Next Step

Choose 150141YS73100 only after its exact specifications and application fit have been confirmed. The strongest next step is a controlled comparison: establish the target documentation, calculate the current drive, verify the mechanical drawing, and test samples through the finished enclosure. The related catalog entries help organize that work, while unresolved fields remain explicit approval items.

Use FindMyChip search to investigate the exact ordering code and related candidates. When the engineering requirements are ready, request a component quotation with quantity, required delivery date, packaging, and documentation needs. That information lets procurement evaluate practical supply options while preserving the specification that the design team approved.