Frosted BA9s T4W LED Bulb: Ultra-Short 25mm with Anti-Glare Diffused Optics
In high-density industrial control consoles, avionics cockpits, laboratory equipment, and vintage automotive instrument clusters, direct glare from pinpoint LED emitters can create distracting optical hotspots and eye fatigue. The MIDCARS T4W-2LFF addresses this visual demand by incorporating an optical-grade frosted polycarbonate diffuser lens over dual-face SMD 2835 LEDs. The milky frosted enclosure effectively diffuses raw lumens into a smooth, evenly diffused 360-degree radial glow, ensuring flawless dial legibility and clean, uniform illumination.
Engineered with an ultra-short overall length of only 23.0mm to 25.0mm and an outer diameter of 10.0mm, the T4W-2LFF effortlessly installs into shallow instrument housings, recessed pushbutton switches, and compact pilot sockets where standard 28mm to 30mm bulbs cannot fit. Operating at an energy-efficient 0.3W to 0.7W, it runs with minimal thermal footprint, preventing heat damage to delicate plastic gauge housings and colored indicator lenses.
Precision Dimensional Specifications & Electrical Parameters
Manufactured under strict ISO 9001 factory quality standards in Dongguan, every batch of T4W-2LFF indicator bulbs undergoes automated optical color consistency testing and electrical burn-in verification:
Electrical & Optical Parameters
| Specification Parameter | Engineering Data & Standards |
|---|---|
| Bulb Form Factor | T2-7/8 / T3-1/4 Compact Miniature Tubular (D 10mm x L 23-25mm) |
| Base Type | BA9s (IEC 7004-14, 9mm Miniature Bayonet, Single Base Contact) |
| Voltage Options (DC) | 3.7V, 6.3V, 12V, 24V, 28V, 36V, 48V, 60V DC Discrete Driver Architectures |
| Voltage Options (AC) | 100-130V AC / 200-240V AC Integrated Bridge Circuit (Custom Available) |
| Power Consumption | 0.3W - 0.7W (Energy Saving Solid-State Illumination) |
| Luminous Output | 25 - 65 Lumens (Soft Glare-Free Diffused Glow) |
| Optics & Enclosure | Frosted Polycarbonate Diffuser Lens (Anti-Glare Coating) |
| Operating Temperature | -40°C to +85°C (-40°F to +185°F) Industrial Operating Range |
| Lifespan Rating | > 50,000 Operating Hours (L70 Standard) |
Mechanical & Base Engineering (BA9s / E10)
Precision Dimensional Blueprint (10mm Diameter x 25mm Length) (Click to enlarge)
Application Scenarios Across Industrial & Instrumentation Systems
Due to its miniature form factor, comprehensive discrete voltage range, and solid-state vibration resistance, the T4W-2LFF serves a broad range of mission-critical signaling applications:
Industrial Control Panels & Automation Equipment
- Industrial Automation & Machinery: 22mm / 16mm pushbutton indicators, status tower lights, and operator console pilot lamps (replaces 24V, 30V CEMA, and 60V incandescent bulbs).
- Control Room Annunciators & Mimic Panels: Switchgear status panels, power distribution cubicles, and telemetry mimic displays requiring continuous 24/7 glare-free visibility.
- Marine & Avionics Consoles: Marine helm switch backlighting and aircraft status panels requiring reliable DC illumination without filament burnout under severe mechanical vibration.
Automotive & Motorcycle Gauge Clusters
- Automotive & Motorcycle Gauges: Speedometer, tachometer, temperature gauge, and clock backlighting where smooth, non-dazzling dial illumination is required for night driving.
- Specialty Vehicle Signaling: Dashboard warning indicators, gear selector backlights, and auxiliary instrumentation pods requiring compact 23-25mm clearance.
Optical Advantages: Frosted Diffuser vs. Clear Lens Configuration
To satisfy divergent optical requirements across different indicator housings, MIDCARS offers dual optical enclosure choices:
- Frosted Polycarbonate Lens (T4W-2LFF): Provides smooth, smooth, evenly diffused light dispersion without hotspot glare—ideal for directly visible instrument cluster dials, diffused backlit iconography, and luxury gauge illumination.
- Clear Polycarbonate Lens (T4W-2LCF): Maximizes raw lumen transmission and punchy, high-contrast point-source illumination—ideal for colored jewel lenses, daytime-visible industrial pilot beacons, and concentrated warning lights.
B2B Procurement, OEM Customization & Factory Supply
As a direct LED bulb manufacturing plant established in 2016 in Dongguan, China, MIDCARS supports automotive aftermarket brands, electrical panel builders, and regional distributors worldwide:
- Flexible Minimum Order Quantity (MOQ): Standard stock configurations supported from 5 pairs; full custom packaging MOQ starts at 2,500 pairs.
- Custom Electrical & Optical Engineering: Tailored voltage circuits (e.g., custom 3.7V/6.3V/12V/24V/28V/36V/48V/60V/110V/230V DC/AC), bi-polar circuitry, custom emitter binning (CCT 3000K/4500K/6500K, or pure Red/Amber/Green/Blue wavelengths).
- Packaging & Private Labeling: Industrial ESD bulk blister packaging, OEM retail hanging cards, custom barcode labeling, and laser-etched model identification on bayonet collars.