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LED Blue
LED Blue (Product Code: SLE/PHY/91) is a pack of standard 5 mm blue light-emitting diodes used as indicators and light sources in electronics and physics practicals in schools and colleges. Each pack contains 100 LEDs, enough to keep a lab stocked for breadboard projects, circuit-building lessons and replacements across a term. It is supplied by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India, alongside the same 5 mm LEDs in other colours.
Specifications
| Parameter | Detail |
|---|---|
| Component | Light-emitting diode (LED), standard type |
| Size | 5 mm |
| Colour | Blue |
| Pack quantity | 100 LEDs |
| Other colours | Available in a range of colours (listed separately) |
| Product code | SLE/PHY/91 |
| Supplied by | Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India |
What Are the Blue 5 mm LEDs Used For?
Blue LEDs are used on breadboards and circuit boards as on/off indicators, in simple logic and sensor projects, and to show that a diode lets current pass in one direction only. Comparing blue with red or green LEDs also lets older students explore how the voltage needed to light an LED changes with its colour, a common LED characteristics experiment.
An LED should always be wired with a series resistor to limit the current, because connecting it straight across a cell or supply can destroy it. The longer lead is normally the positive (anode) connection. Keep opened packs dry and sealed so the leads stay clean between lessons.
What to Specify When Ordering
- Number of packs (each pack holds 100 blue LEDs).
- Any other LED colours you want quoted in the same order.
- Resistors, breadboards or LED boards needed to complete student circuits.
Supplier
Jain Scientific Equipments Private Limited, trading as ScienceLab, supplies these standard 5 mm blue LEDs as part of its physics and electronics consumables range. Schools and colleges can add LED packs to the same enquiry as their circuit apparatus, so components and equipment arrive in one consignment. Read more about the company on the ScienceLab profile page.
Related Physics Lab Equipment
Components and kits often ordered with blue LEDs:
- LED Bright Red — the same standard LED size in bright red, also in packs.
- LED, 5 mm, White — white LEDs for lighting projects and colour comparisons.
- Simple Circuit Module LED Board Red — a ready-mounted LED with a series resistor for younger pupils.
- Fundamentals of Electronics — a breadboard kit in which LEDs serve as indicators.
- Battery Clip, PP3 — a clip with leads for powering LED circuits from a PP3 battery.
Browse the wider range of Physics Lab Equipment for circuit apparatus.
Frequently Asked Questions
How many LEDs are in a pack of LED Blue?
The LED Blue pack contains 100 standard 5 mm blue light-emitting diodes. Buying by the hundred keeps a school or college lab stocked for class projects and replacements, rather than ordering single LEDs each time one fails.
What size are the LED Blue diodes?
LED Blue diodes are the standard 5 mm size, which fits common breadboards, LED holders and circuit boards used in schools. The same 5 mm LEDs are also available in a range of other colours, listed as separate items.
Do the blue LEDs need a resistor?
Yes. Like any LED, each diode in the LED Blue pack should be connected with a suitable series resistor to limit the current. Without one, connecting it directly to a cell or power supply can damage the LED almost immediately.
Where can I find the electrical ratings for LED Blue?
The LED Blue listing gives the size, colour and pack quantity but not forward voltage, current or brightness figures. If your experiment needs these ratings, ask us through the contact page before ordering and we will advise on the batch quoted.
Who supplies LED Blue?
LED Blue is supplied by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India, to schools, colleges, training institutes and dealers, and it can be included in larger laboratory orders for India and international markets.
Can other LED colours be ordered together with LED Blue?
Yes. The LED Blue pack can be quoted together with the same 5 mm LEDs in other colours, such as red and white, so a single order covers all the indicator colours your class projects need.
Request a Quote
Request a price for LED Blue by sending the number of packs and any other colours through the contact page, or add the item to the enquiry cart. ScienceLab will reply with a quotation for the full order.
Last updated: 24 September 2026
