Home > Products > Festoon LED > C5W Festoon LED Bulb | SV8.5 Dome & Marine Light 12V 24V
C5W Festoon LED Bulb - SV8.5 Dome License Plate & Marine Cabin Light 12V 24V
<
C5W SV8.5 festoon LED bulb 100LM single-sided directional, 10mm clear PC tube
C5W festoon LED bulb 10mm shatterproof clear PC tube with SMD 2835 emitters
C5W festoon LED license plate bulb macro of constant-current circuit and soldering
C5W festoon LED 10mm horizontal profile, single-sided directional optical array
MIDCARS C5W SV8.5 LED bulb upright studio view for 12V and 24V vehicle systems
C5W 31mm 36mm 39mm 42mm festoon LED bulb for car dome and marine yacht lighting
>
Cross Reference / Direct Replacement
31mm: DE3175 / DE3021 / DE3022 / 3175 / 6428
36mm: 6418 / 6411 / 6413 / 6461 / DE3423 / DE3425
39mm: 6411 / 6423 / 6418 / DE3425 (38mm-39mm)
42mm: 578 / 211-2 / 212-2 / 214-2 / 6451 (41mm-42mm)
Standard SV8.5-8 Conical Base

C5W Festoon LED Bulb - SV8.5 Dome License Plate & Marine Cabin Light 12V 24V

The MIDCARS C5W-6L is an engineered 10mm-diameter C5W SV8.5 festoon LED bulb featuring high-efficiency SMD 2835 LEDs encased in a shatterproof clear PC tube. Delivering 100 lumens across a wide 10–30V DC constant-current circuit (lengths 31, 36, 39, and 42mm), it provides direct plug-and-play upgrade for automotive dome, license plate, RV, and marine yacht cabin lighting.
Product ModelC5W-6L
Socket / BaseFestoon SV8.5 (Standard 8.5mm Pointed Metal End Caps, 10mm Tube)
Length Options31mm · 36mm · 39mm · 42mm (Precision Fit for Automotive & Marine)
Operating Voltage10–30V DC Constant Current (12V & 24V Compatible · 48V Custom Available)
Power Consumption1.0W Energy-Efficient Single-Sided Directional Output
Luminous Output100 Lumens (Glare-Free Directional Illumination)
Emitting Color6500K Xenon White · 3000K Warm White · 4500K Natural White (Custom Colors)
Optical Construction3–6x High-Efficiency SMD 2835 LEDs (Ra ≥ 80 Single-Sided Directional Array)
Enclosure / BodyHigh-Transmittance Shatterproof Clear PC Tube (Non-Glass Vibration Resistant)
Factory MOQStandard: from 5 pairs | Custom Packaging: 5,000 pcs (pre-funded)
Quality &amp; WarrantyCE (EMC Compliant), RoHS · 2 Years Factory Warranty
Inquire Now Next Product
×
🔍+ 🔍- 100% 💡 Scroll to Zoom | Drag to Move | Double-Click to Reset | Press ESC to Exit
  • Product Details

Overview: Precision 10mm C5W SV8.5 Festoon LED Replacement

The MIDCARS C5W-6L is an industrial-grade 10mm-diameter festoon LED replacement bulb engineered with standard SV8.5 conical end caps. Designed with high-density SMD 2835 emitters arranged on a single-sided aluminum core and housed in a durable, shatterproof polycarbonate (PC) tube, this bulb delivers uniform, glare-free directional illumination while eliminating the breakage hazards of traditional glass festoons.

Featuring a precision 10–30V DC constant-current driver circuit (with optional 48V customization), the C5W-6L is universally compatible with 12V automotive battery circuits, 24V commercial truck electrical architectures, and off-grid marine yacht power systems, ensuring flicker-free operation and exceptional longevity.

Precision Blueprint & Multi-Application Technical Gallery

Review exact physical dimensions across all four length options and dual application scenarios below. Click any image to open the high-resolution lightbox view:

C5W SV8.5 festoon LED bulb precision blueprint showing 31mm 36mm 39mm and 42mm length options
Dimensional Blueprint
(10mm Tube · 31 / 36 / 39 / 42 mm Length Options)
C5W festoon LED bulb marine yacht and car interior cabin illumination application
Marine Yacht & Automotive Cabin Illumination
(Interior Dome & Reading · Boat Stateroom & Deck Courtesy)

Key Engineering & Operational Features

  • Shatterproof Clear Polycarbonate Tube: Replaces fragile glass with high-impact, non-yellowing optical PC tubing, delivering maximum vibration resistance for rough road conditions and marine wave slamming.
  • Single-Sided Directional Illumination (100% Downward Light): Specially engineered for downward and surface-mount lighting fixtures (dome, reading, license plate, and showcase display). By focusing 100% of the luminous output in a 120° forward beam angle, it eliminates internal housing light loss and glare while optimizing thermal efficiency.
  • Wide 10–30V DC Constant-Current Drive: Automatically stabilizes current across fluctuating electrical systems in 12V passenger vehicles, 24V commercial rigs, and marine DC distribution banks (48V custom variants available upon request).
  • Standard SV8.5 Precision Conical End Caps: Form-fit nickel-plated brass cone contacts provide low-resistance electrical connectivity and high tension retention in standard spring-loaded clips.

Application Scenarios: Automotive, Marine, RV & Commercial Display

The single-sided directional beam and wide 10–30V constant-current regulation of the C5W-6L serve high-demand B2B applications across multiple industries:

  • Automotive Interior & Utility: Passenger car dome, reading, map, footwell, trunk/cargo, and license plate lights (12V battery architectures).
  • RV, Camper Van & Motorhome: 12V/24V off-grid auxiliary battery interior living space, kitchen cabinet, and bunk lighting.
  • Marine Yacht & Commercial Vessels: Cabin staterooms, galley, companionway, and deck courtesy lighting (sea-spray and wave-vibration resistant).
  • Commercial Showcase & Display Cabinets: Jewelry, watch, museum, and retail display cases requiring glare-free directional accent illumination without top housing heat traps.
  • Refrigerated Display Cases (Coolers & Freezers): Low heat dissipation suitable for supermarket chillers, bottle coolers, and vending equipment.
  • Industrial Control Panels & Machinery: Internal equipment electrical cabinet inspection lighting (compatible with 10–30V DC automation power buses).

Frequently Asked Questions

How do I select the correct festoon bulb length (31mm, 36mm, 39mm, or 42mm)?
Measure the tip-to-tip distance between the two contact spring clips in your light housing. 31mm is standard for Asian vehicle map/dome lights; 36mm and 39mm are common for European license plate and interior lamps; 42mm fits larger American dome and marine cabin fixtures. The flexible spring clips generally accommodate ±1mm variation.
Why does this C5W bulb use a clear PC tube instead of a glass envelope?
The shatterproof polycarbonate (PC) tube provides superior structural durability against intense road vibrations, off-road impacts, and marine wave pounding without cracking or shattering like fragile glass bulbs.
What are the optical advantages of the single-sided LED emitter design?
The single-sided directional array concentrates 100% of generated lumens directly downward into the vehicle cabin, footwell, or license plate without wasting light trapped in the upper housing, maximizing usable lux efficiency.
What is the sample MOQ and custom packaging procedure?
Samples are available from 5 pairs for evaluation. Custom retail packaging (5,000 pcs MOQ) can be pre-funded and held in inventory to be drawn down across repeat orders. Please refer to the Factory MOQ specifications above for full terms.