Home > Products > Automotive LED Bulbs > Self-Flashing G18 LED Bulb | Built-in Flasher Strobe 12V 24V
Self-flashing G18 LED bulb with built-in flasher circuitry studio product photography showcase
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Self-flashing G18 LED bulb with 39 SMD 3014 chips and clear PC cover front perspective
G18 self-strobe LED replacement lamp pair standing display showing clear optical enclosure
G18 LED self-flashing bulb horizontal perspective highlighting D18x43mm compact bayonet body
Self-flashing G18 bayonet LED bulb bottom pin contact and metal base terminal view
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Cross Reference / Direct Replacement
BA15S Base (1156 / R5W / R10W)
BA15D Base (1142 / Level Pins)
BAY15D Base (1157 / Offset Pins)
Self-Flashing Built-in Flasher
30 / 60 / 90 FPM Strobe Rates
5Hz Rapid Emergency Strobe

Self-Flashing G18 LED Bulb (Built-in Flasher) - BA15S / BA15D / BAY15D (12V / 24V / 48V)

B2B factory self-flashing G18 bayonet LED bulb (3.0W, 260LM) with built-in autonomous flasher IC (no relay needed). Features 39x SMD 3014 LEDs, 360-degree optical coverage, BA15S/BA15D/BAY15D base options, and 30-90 FPM / 5Hz strobe patterns across 12V, 24V, and 48V DC.
Product Model: G18C-39L-SFB
Socket / Base: BA15S (Single Contact) / BA15D (Level Pins) / BAY15D (Offset Pins)
Flashing Mode: Self-Flashing Built-in Circuit (Automatic Strobe upon Power-on, No Relay Needed)
Strobe Rates: 30 FPM / 60 FPM / 90 FPM / 5 Hz Rapid Burst (Factory Programmable)
Bulb Dimensions: Φ18mm Globe Diameter × 43mm Overall Length
Operating Voltage: 6-12VDC / 12-24VDC / 48VDC (Discrete Voltage Configurations)
Power Consumption: 3.0W (+/-0.1W High-Efficiency Operation)
Luminous Flux: 260 LM (High-Intensity 360° Omnidirectional Output)
Color Temperature: 6500K Xenon White / 3000K Warm White / Amber (595-600nm) / Red (620-630nm)
LED Emitters: 39× High-Efficiency SMD 3014 LEDs (Radial Uniform Distribution)
Enclosure / Lens: Optical Clear Polycarbonate Shell (Optional Frosted Diffuser)
Primary Uses: Motorcycle Hazard & Turn Warning, Vehicle Safety Beacon, Industrial Equipment Strobe
Quality & Warranty: CE (EMC Compliant), RoHS | 2 Years Factory Warranty
Factory B2B Terms: Standard: from 5 pairs | Custom Packaging: Packaging run MOQ 5,000 pcs (pre-funded and drawn down across repeat orders)
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  • Product Details

Self-Flashing Driver Architecture (Built-in Flasher IC)

The G18C-39L-SFB is an engineered self-flashing bayonet LED replacement bulb with an autonomous onboard timing IC integrated directly into the internal driver. Unlike standard LED bulbs that require external thermal flashers, electro-mechanical relays, or electronic flasher boxes to cycle power, the G18C bulb initiates automated stroboscopic flashing immediately upon receiving constant DC power.

This standalone architecture eliminates external relay failure points, rewiring complexities, and load-resistor heating issues, allowing direct drop-in retrofit into motorcycle turn signal housings, perimeter safety beacons, utility truck headache racks, and industrial machinery alert stations.

Three Standard Bayonet Base Configurations (1 Row × 3 Sizes)

To accommodate global motorcycle, automotive, and industrial fixture standards, the G18C self-flashing series is precision-manufactured in three distinct metal bayonet base formats with identical Φ18mm × 43mm envelope dimensions:

BA15S single contact 180 degree level pin dimensional blueprint D18x43mm

BA15S Base (1156 / Single Contact)

Single bottom solder contact with 180° level parallel side bayonet pins. Universal for single-circuit turn and marker lights.

BA15D dual contact 180 degree level pin dimensional blueprint D18x43mm

BA15D Base (1142 / Dual Level Pins)

Dual bottom solder contacts with 180° level parallel side pins. Engineered for isolated ground and dual-line circuits.

BAY15D dual contact index staggered pin dimensional blueprint D18x43mm

BAY15D Base (1157 / Staggered Pins)

Dual bottom contacts with keyed indexed offset height pins. Standard for dual-mode vehicle tail and brake housings.

Programmable Flash Rates & Multi-Voltage Compatibility

Factory micro-controller firmware supports multiple standardized flashing cycles tailored to specific regulatory and operational environments:

  • Standard Warning (60 / 90 FPM): Complies with highway vehicle hazard signaling rhythms for motorcycle and roadside service vehicles.
  • Emergency Strobe (5 Hz Burst): Rapid 5-cycles-per-second high-urgency strobe pattern designed for industrial forklifts, airport ground support, and construction perimeter lights.
  • Discrete Voltage Ranges: Precision DC drivers available in 6-12V (classic bikes), 12-24V (universal automotive/truck), and 48V (electric equipment/telecom).

Frequently Asked Questions

What is the difference between a self-flashing LED bulb and a standard flashing bulb?
A self-flashing bulb (SFB) incorporates an autonomous timing micro-controller inside the bulb itself. It flashes automatically as soon as standard constant DC power is applied, requiring NO external flasher relays, electronic blinker units, or load resistors. A regular bulb only flashes if the vehicle wiring already has an external flashing relay pulsing the power on and off.
How do I choose between BA15S, BA15D, and BAY15D bayonet bases?
Examine the bottom contacts and side locking pins: BA15S features a single center bottom contact with parallel side pins (180° level). BA15D features two bottom contacts with parallel side pins (180° level). BAY15D features two bottom contacts with indexed offset-height side pins (one pin higher than the other to prevent reverse insertion). Refer to our dimensional blueprints above.
Can the flashing frequency be customized for industrial and fleet orders?
Yes. While our standard production configurations offer 30 FPM, 60 FPM, 90 FPM, or 5 Hz rapid strobe patterns, we provide custom firmware programming for OEM and fleet procurement. We can customize flash rates, burst intervals (e.g. triple strobe then pause), and duty cycles to match your fleet safety specifications.
What is the factory minimum order quantity (MOQ) and custom packaging policy?
Standard specifications are available from 5 pairs for initial evaluation and distributor sample verification. For customized commercial blister packs, printed gift boxes, or client OEM branding, the packaging printing MOQ is 5,000 units. The client pre-funds the custom packaging inventory, which is warehoused in our Dongguan factory and drawn down across rolling production orders.