Miniatronics 12-030-18 3 mm Red, Green and Yellow LEDs, 18 Pack: Scale, Layout & Compatibility Guide

The product behind this guide is Miniatronics 12-030-18 3 mm Red, Green and Yellow LEDs, 18 Pack. Because similar model train lighting leds products can share brand names or photographs, the analysis below keeps the Miniatronics title, SKU and live image set tied together as one record.

Product identity without guesswork

• Exact product: Miniatronics 12-030-18 3 mm Red, Green and Yellow LEDs, 18 Pack
• Brand or vendor: Miniatronics
• Product type: Model Train Lighting LEDs
• SKU or catalog key: MNT1203018
• Year appearing in the identity: 2030
• Quantity wording: 18 Pack
• Variants reviewed: 1
• Product images indexed: 1

The recorded price at verification was $12.95 before shipping and tax. At least one variant was orderable when the record was checked.

This item is best cataloged under its full name and MNT1203018. The year 2030 belongs to the listing identity; it should not automatically be treated as the manufacturing date of the item. The quantity wording 18 Pack should be reconciled with the package photo and option selected. That combination protects against accidental substitutions when related products share a subject, color, scale or series.

What the current listing actually confirms

Current catalog evidence can be summarized as follows: “Miniatronics 12-030-18 is an assortment of 18 standard 3 mm LEDs for model-lighting projects. The pack contains six red, six green and six yellow LEDs, plus current-limiting resistors. Pack specifications Manufacturer: Miniatronics. Manufacturer part number: 12-030-18. LED diameter: 3 mm. Quantity: 18 LEDs, with six of each color. Colors: red, green and yellow. Current-limiting resistors are included. Plan the lighting circuit Use the colors for layout indicators, signals or other miniature lighting where the 3 mm size fits. Check polarity, power supply and resistor requirements before connecting LEDs. This is a component pack; wiring, a power supply, switches and model structures are separate. It is not a preassembled signal or flashing-light controller. Explore model train parts and accessories for your layout.” Every additional recommendation in this guide is framed as a check or planning step when the listing itself does not confirm the answer.

The category-specific decision

Model-railroad compatibility for Miniatronics 12-030-18 3 mm Red, Green and Yellow LEDs, 18 Pack begins with the exact scale and item identity, then moves to operating details. SKU MNT1203018 should be matched before relying on a review of a nearby road number or decoder format. Coupler type, wheel standard, minimum radius, control interface and power requirements must be confirmed when they are not stated.

A road name or locomotive family can describe appearance without guaranteeing mechanical interchangeability. The exact release number, scale and photographed hardware determine whether the item belongs on the intended layout.

Second-pass inspection

For electronics, do not connect the item until the locomotive or accessory wiring is documented. For rolling stock, check free rolling, wheel gauge and coupler height. For structures, make a paper footprint before cutting scenery. Each approach tests the highest-risk compatibility point first.

The live page remains the source for current price and availability; the roster remains the source for what the layout already owns.

Image-by-image verification

The photographed item is part of the specification. With 1 image indexed, a buyer can compare color, form, labels, contents and visible condition before relying on a shortened title. Save the image that best shows the identifier MNT1203018.

Pre-purchase checklist for this exact record

• Use the complete name, not a shortened marketplace label.
• Use MNT1203018 to prevent a near-match substitution.
• Read the variant and inventory state shown now.
• Confirm technical requirements from the current manufacturer source.
• Keep the receipt and one reference image with the product record.

Where it sits in the Muncle Mikes catalog

1:12 Scale Diecast Models & Kits · Model Trains & Train Sets · Model Train Parts & Accessories · Miniatronics · Model Building Supplies

How to document it after purchase

After purchase, store the acquisition date, price, seller, SKU MNT1203018, selected option and one clear image with the project or collection record. Add notes about fit, assembly, condition or performance only after they are observed on this exact item.

This separates verified ownership evidence from later opinion and makes a replacement or repeat purchase much easier.

Gift considerations

For gifting, the product image can verify the visual subject while the SKU MNT1203018 verifies the release. Both checks matter when the recipient collects small variations.

Questions answered by the exact listing

What identifies this exact product?

The complete title, MNT1203018, vendor Miniatronics, product type Model Train Lighting LEDs and photographed item form the identity. None should be replaced by a generic category label.

What is still unconfirmed?

Any dimension, material, accessory, compatibility claim or package component absent from the listing remains unconfirmed until the current instructions or manufacturer record supplies it.

Where should the purchase decision be finalized?

Use the live product page linked below for the current option, price and availability.

Final check: the correct choice is the item whose title, SKU MNT1203018, image and variant state agree with the project or collection need. Where one of those elements does not match, continue comparing before ordering.

Review the live Miniatronics 12-030-18 3 mm Red, Green and Yellow LEDs, 18 Pack listing

Verified October 15, 2026 from the exact Shopify product record. Current price, options and availability remain controlled by the live listing.

Verification worksheet for this listing

Use MNT1203018 as the checkpoint for Miniatronics 12-030-18 3 mm Red, Green and Yellow LEDs, 18 Pack. Confirm the vendor name Miniatronics, the product type Model Train Lighting LEDs, the selected variant and the photographed item before checkout. If a required size, scale, material, interface or included component is absent from the live record, write it down as unresolved and obtain the answer from the current instructions or manufacturer source.

After delivery, add a dated photograph and a brief result note. A builder can record fit, materials and finishing choices; a collector can record package and item condition; a user can record compatibility and care. Those details make the record genuinely product-specific while preventing a later observation from being confused with a factory specification.