Home > Products > Miniature & Indicator LED Bulbs > E10 Miniature LED Bulb - BA9s Compatible 12V Indicator Light

E10 LED Indicator Bulb - Mini Screw Base, 360° Dual-Face (BA9S Optional)

E10-4L E10 miniature screw-base LED indicator bulb - dual-face 4x SMD 2835 for 360-degree output. 3.7V-240V, 0.6-1W, 50-90lm, 6500K/3000K/4500K, D10x28mm. Replaces 2W/3W/5W incandescent indicator bulbs for panel, instrument, flashlight, decorative and toy lights.
Product Model:E10-4L
Socket / Base:E10 (BA9S / P13.5 optional)
Operating Voltage:3.7V-240V (multi-option)
Power Consumption:0.6-1W
Luminous Flux:50-90lm
Color Temperature:6500K / 3000K / 4500K
LED Emitters:4x SMD 2835 (Ra ≥ 80, dual-face)
Bulb Size:D10 x 28mm
Enclosure:Clear PC
Certification:CE (EMC), RoHS
Warranty:2-Year Factory Warranty
  • Product Details

Product Overview: E10-4L LED Indicator Bulb

The MIDCARS E10-4L is a miniature E10 screw-base LED bulb with a dual-face optical array — four high-CRI SMD 2835 LEDs (two per side) deliver even, shadow-free 360° illumination from a compact clear PC tube.

It is a direct energy-saving replacement for 2W / 3W / 5W E10 incandescent bulbs, widely used as panel indicator lights, instrument / dashboard lights, flashlights, decorative string lights, toy lights and model lights. Available from 3.7V to 240V with 6500K white, 3000K warm white and 4500K neutral white options.

Precision Dimensions

Compact E10 miniature screw base & optional BA9S miniature bayonet base — both featuring total length 28mm, bulb diameter 10mm. Click drawings to zoom:

E10-4L LED bulb miniature screw base dimensional blueprint D10x28mm
E10 Screw Base Blueprint
Φ10mm × L28mm Miniature Edison Screw (MES) Sockets
BA9s-4L LED bulb miniature bayonet base dimensional blueprint D10x28mm
BA9S Bayonet Base Blueprint
Φ10mm × L28mm Miniature Bayonet Single Contact (MCC) Sockets

Real Illumination & Light Output

Double-sided SMD 2835 LEDs deliver even 360° illumination without dark spots — click any image to zoom:

E10 LED Indicator Light Output 1
E10 LED Indicator Light Output 2
E10 LED Indicator Light Output 3
E10 LED Indicator Light Output 4
E10 LED Indicator Light Output 5

Typical Applications

  • Panel / equipment indicator lights
  • Instrument / dashboard lights
  • Flashlights & torches
  • Decorative & string lights
  • Toy & model / hobby lights

Frequently Asked Questions

What does this E10 bulb replace?
It replaces 2W, 3W and 5W E10 miniature screw-base incandescent bulbs used as panel indicators, instrument/dashboard lights, flashlights, decorative string lights, toy lights and model lights.
What voltages are available?
3.7V, 6V, 12V, 24V, 30V, 36V, 48V, 60V, 75V, 100-130V and 200-240V. Custom voltages can be made for OEM/ODM orders.
What is the dual-face design?
The PCB has SMD 2835 LEDs on both sides, so the bulb emits light in a full 360-degree pattern - brighter and more even than single-sided bulbs.
Can I get BA9S or P13.5 bases?
Yes - the standard base is E10, and BA9S or P13.5 bases are available as options. Contact us to confirm the base type for your application.