LED Bright Red (Product Code: SLE/PHY/83) is a standard 5 mm bright red light-emitting diode used as a status indicator and to teach diode polarity in school electronics and physics lessons. It is sold in a pack of 100, and the same 5 mm LED is offered in a range of colours for colour-coded circuits. It is supplied by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India, for classroom and project use.
| Parameter | Detail |
|---|---|
| Type | Standard LED, 5 mm |
| Colour | Bright red |
| Pack size | 100 |
| Range | Same 5 mm LED available in a range of colours |
| Product code | SLE/PHY/83 |
| Supplied by | Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India |
Red is the colour people read as "on" or "warning", so bright red LEDs are the usual choice for power indicators, alarm lights and the output lamps in logic gates experiment kit circuits, where a lit LED shows a logic 1. In a first diode lesson, students connect one each way round and see that it lights only when forward biased, a memorable demonstration of one-way conduction.
Paired with green LEDs, red ones let pupils build traffic-light models and two-colour polarity testers that show which way current is flowing. Fit a series resistor in every circuit, check the leads before soldering, and keep unused LEDs in the pack so the full 100 stay sorted by colour.
Jain Scientific Equipments Private Limited supplies these bright red LEDs under its ScienceLab name, as one of the stock components it provides to school electronics labs, teachers and dealers. They can be combined with white and blue LEDs and circuit modules in a single order. The company profile has more details.
Useful with red LEDs in indicator and logic work:
See more items in Physics Lab Equipment.
What size and quantity is the LED Bright Red pack?
The LED Bright Red is a standard 5 mm LED supplied in a pack of 100. The quantity suits a class set for diode and indicator experiments, with extra LEDs left over for projects and replacements.
How does the LED Bright Red show diode polarity?
The LED Bright Red conducts and glows only when its anode, usually the longer lead, is connected towards the positive supply. Reversing it leaves it dark, so students can see forward and reverse bias without needing a meter.
Can the LED Bright Red be connected straight to a battery?
No, the LED Bright Red should always have a series resistor to limit its current; connecting it directly to a battery can burn it out. Resistors are not listed with the pack, so ask us if you want suitable values quoted.
Is the LED Bright Red suitable for logic gate experiments?
Yes, the LED Bright Red is commonly used as an output indicator in logic gate experiments, lighting to show a high output. Check the gate circuit already has a current-limiting resistor for the LED before connecting it.
Who supplies the LED Bright Red?
The LED Bright Red is supplied by Jain Scientific Equipments Pvt Ltd (ScienceLab) of Ambala, Haryana, India, to schools, colleges and dealers in India and international markets, together with LEDs in other colours and circuit modules.
To price the LED Bright Red, send the number of packs through the contact page or add it to the enquiry cart with any other colours.
Last updated: 24 September 2026