$9.99from · $1.50 per bulb
TJOY G9 & GU10 Bulbs
These are pin-base bulbs. A G9 pushes in on two wire loops, and a GU10 twists and locks on two thick pins. They are not interchangeable, so look at the old bulb.
Both replace hot halogen bulbs with a 4-watt LED.
Best TJOY G9 & GU10 Bulbs for the job
- Best for: A G9 chandelier on a dimmerTJOY G9 Dimmable LED Bulb, 40W Equivalent
450 lumens from 4 watts, and it dims. From $14.99.
- Best for: A G9 fixture on a plain switchTJOY G9 LED Bulb, 40W Equivalent
The same 450 lumens for less per bulb, in packs of 6 to 24. From $9.99.
- Best for: Track heads and range hoodsTJOY GU10 LED Spot Bulb, 4W
A 40° spot at 300 lumens from 4 watts. From $9.49.
$14.99from · $1.83 per bulb
$9.49from · $1.27 per bulb
LED or halogen G9 and GU10 bulbs?
A TJOY LED G9 draws 4 watts. The halogen capsule it replaces draws 40.
| TJOY LED G9 or GU10 | Halogen G9 or GU10 | |
|---|---|---|
| Power | 4 watts | 35 to 40 watts |
| Energy lost as heat | Low | About 90%, as with any incandescent source |
| Body size (G9) | 0.66 × 1.96 in. | Usually a little shorter |
| Better choice when | The fixture runs for hours, or the glass shade gets hot | The shade is so small that only the short halogen capsule fits |
The heat figure for incandescent sources comes from ENERGY STAR. Sources: ENERGY STAR: Learn About LED Lighting, read 3 October 2026.
G9 & GU10 Bulbs: questions
Are G9 and GU10 bulbs the same?
No. A G9 has 2 wire loops 9 mm apart and pushes straight in. A GU10 has 2 thick pins 10 mm apart and twists to lock.
Can a TJOY G9 LED bulb replace a 40-watt halogen?
Yes. The TJOY G9 gives 450 lumens from 4 watts and runs on 120 V. Check that its 1.96 in. body fits inside the shade.