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LED White
LED White (Product Code: SLE/PHY/199) is a standard 5mm white light-emitting diode used as a low-power light source in student circuits and LED characteristics experiments in physics and electronics labs. It is packed 100 to a pack, and its listed data — forward voltage values of 3.3 and 3.8, a luminous intensity of 10 mcd and an IF value of 30 — help students plan current-limiting resistors and compare white LEDs with other colours. It is supplied by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Type | Standard LED (light-emitting diode) |
| Size | 5mm |
| Colour | White |
| Pack size | 100 LEDs |
| Forward current (IF) | 30 (listed value; forward-current ratings for 5mm LEDs are normally stated in mA) |
| Forward voltage (VF) | 3.3 V and 3.8 V (two values listed) |
| Colour coordinates | x: 0.31, y: 0.30 (listed under wavelength in the source data; white LEDs are described by colour coordinates rather than one wavelength) |
| Luminous intensity | 10 mcd |
| Other colours | The same standard 5mm LED is available in a range of colours |
| Product code | SLE/PHY/199 |
| Supplied by | Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India |
What Is the White LED Used For?
In an LED characteristics experiment kit, students plot current against voltage for the white LED and see that it only begins to conduct and glow once the forward voltage is reached — a noticeably higher turn-on voltage than a red LED, which opens a discussion of photon energy and colour. The same LEDs serve as the light source for light-dependent resistor circuits, as indicators on circuit boards, and in simple optics and science-fair projects.
Always wire a series resistor with each LED: subtract the forward voltage from the supply voltage and divide by the chosen current, keeping that current below the IF rating. Check polarity before switching on — on standard LEDs the longer lead is normally the anode — because a reversed LED will not light.
What to Specify When Ordering
- The colour: white (this item) or another colour from the standard 5mm range
- The number of packs, remembering each pack holds 100 LEDs
- Battery clips, circuit boards or sensors you want quoted with the LEDs
Supplier
These white LEDs are supplied by Jain Scientific Equipments Private Limited, the company behind the ScienceLab name, to schools, colleges, electronics training centres, dealers and importers. Packs can be combined with circuit boards, battery connectors and other physics items in a single consignment. For vendor records, buyers can note the supplying company’s Importer-Exporter Code AAECJ8618A (DGFT) and GSTIN 06AAECJ8618A1ZT. The ScienceLab company profile has more background.
Related Physics Lab Equipment
These items are often ordered with white LEDs for circuit and sensor work:
- LED Bright Red — compare its forward voltage with the white LED
- LED Blue — another colour for colour and photon-energy comparisons
- Light Dependent Resistor — detects the LED’s light in sensor circuits
- Battery Snap with Crocodile Clip — a quick battery connection for LED circuits
- Worcester Circuit Board — a base for building student circuits
Find more components in Physics Lab Equipment.
Frequently Asked Questions
How many LEDs are in a pack of LED White?
LED White is supplied in packs of 100 standard 5mm white LEDs, enough for a class to build circuits and keep spares for replacements. Order the number of packs you need, and mention any other colours from the same range.
What forward voltage does the white LED need?
The data for LED White lists forward voltage (VF) values of 3.3 V and 3.8 V. White LEDs need a higher forward voltage than red ones, so allow for this when you choose the supply voltage and the series resistor.
Does LED White need a series resistor?
Yes. LED White should always be used with a series resistor that keeps the current below its listed IF value of 30. Work out the resistor by subtracting the forward voltage from the supply voltage and dividing by the chosen current.
Why is no single wavelength given for a white LED?
LED White is specified with colour coordinates of x: 0.31, y: 0.30 rather than one wavelength, because a white LED emits a broad spread of colours. The coordinates describe its white tint, and its luminous intensity is listed as 10 mcd.
Who supplies LED White?
LED White is supplied by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, Haryana, India, to schools, colleges, electronics labs, dealers and importers in India and international markets, usually alongside other circuit components and physics lab equipment.
What should a quotation request for white LEDs include?
A quotation request for LED White should give the number of packs, any other LED colours needed, related components such as battery clips or circuit boards, and the delivery location, so everything can be quoted together in one offer.
Request a Quote
To get a price for LED White, write to us through the contact page or add the packs to the enquiry cart with any other components you need.
Last updated: 24 September 2026
