Tools & Accessories
LED White
৳2
Standard 5 mm white LED with a forward voltage around 3.2V, so it takes roughly a 100Ω series resistor on a 5V rail.
White LEDs are blue dies with a phosphor coating, which is why they share the higher forward voltage and need the same smaller resistor.
What you can build
- Small torches and task lighting
- Model and diorama illumination
- Camera fill light for a project enclosure
Not sure it will work? Test your circuit free in Tekko Sim — on your phone, in Bangla or English.
| Category | Tools & Accessories |
| Model no. | 5mm white |
| Availability | In stock |
| In stock | 25 pcs |
| Delivery | Cash on Delivery, nationwide Bangladesh |
| Colour | white |
| Size | 5 mm through-hole |
| Forward Voltage | roughly 3.0–3.4V |
| Forward Current | 20 mA typical |
| Suggested Resistor on 5V | 100Ω |
| Polarity | long leg is the anode, positive |
| Note | forward voltage is too high to run reliably from 3.3V |
Questions about the LED White
Which resistor should I use with a white LED?
100Ω on a 5V supply. The 220Ω resistor that suits red and green leaves a white LED visibly dim, because white runs at roughly 3.2V rather than 2V.
Why does white sometimes look blue or yellow?
A white LED is a blue die under a yellow phosphor, and the blend shifts with viewing angle and drive current. Running it well under its rated current tends to make it look bluer.
Can I use one as a room light?
No. A single 5 mm LED at 20 mA produces a small amount of light, fine as an indicator or for a model. Room lighting needs high-power LEDs with a proper driver and heatsinking.
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