Red LED with series resistor

Product Code : SCL-EI-10629

The Red LED with Series Resistor from Lab Glassware Manufacturer is an educational circuit indicator engineered for demonstrating current flow, polarity, resistance, and LED protection in school physics and electronics laboratories. Manufactured and supplied from Ambala, Haryana, India since 1982, Lab Glassware Manufacturer exports circuit teaching components to schools, colleges, and STEM training institutes across West Africa, including Nigeria, Ghana, Senegal, and Côte d’Ivoire, supporting institutional procurement and export tenders throughout the region.

Quick answer: The Red LED with Series Resistor is a plug-in LED indicator module supplied with its current-limiting resistor already fitted, used to teach current flow, polarity, and circuit completion — a ready-to-connect visual output for supervised school, college, and STEM electronics practicals.

Key Features

• LED indicator with series resistor for school circuit demonstrations.
• Helps teach current flow, polarity, resistance, and circuit completion.
• Series resistor supports current limiting in compatible low-voltage circuits.
• Provides clear red light output for visible classroom observation.
• Suitable for use with cells, switches, meters, plug-in boards, and STEM kits.
• Useful for practical lessons on LEDs, resistors, Ohm’s law, and simple electronics.
• Designed for supervised educational use with correctly rated power supplies.

What’s Included

• 1 x Red LED with Series Resistor
• Protective packing for safe storage and transport
• Optional plug-in board, connecting leads, switches, cells, meters, or activity guide — only if specified in the order

Applications / Uses

• Demonstrating LED indication in school physics circuits.
• Teaching polarity and correct current direction in basic electronics.
• Showing how a resistor limits current in a simple LED circuit.
• Observing open-circuit and closed-circuit conditions visually.
• Using with switches, cells, meters, and plug-in training boards.
• Pairing with General Lab Equipment circuit accessories for classroom demonstrations.

How to Use the Red LED with Series Resistor

1. Check the confirmed voltage and current rating before connecting the component.
2. Insert or connect the LED element into the compatible circuit board or teaching setup.
3. Connect the LED in the correct polarity as shown in the circuit diagram.
4. Connect the power source, switch, and meter if required by the experiment.
5. Apply the recommended low-voltage supply and observe the red light output.
6. Disconnect the power supply before removing or changing the component.

Safety note: Do not exceed the confirmed electrical rating. The series resistor helps limit current, but the component should still be used only with correctly rated low-voltage circuits.

Care & Maintenance

• Store the LED element in a dry, labelled component box after use.
• Keep terminals clean, dry, and free from dust or corrosion.
• Do not bend connectors or force the component into an incompatible board.
• Replace the unit if the LED does not glow, the resistor is burnt, or the connector is loose.

Ready-Fitted LED vs. Standalone Plug-In Components

Unlike the standalone Plug-In LED Red Top, which is connected with a separately chosen current-limiting resistor, the Red LED with Series Resistor arrives with its resistor already fitted — a ready-to-connect option for classes that want a simpler build step. Students who want to explore resistor selection independently can instead pair the Plug-In LED Red Top with a standalone Resistance Based Circuit Element, or extend either LED circuit with a Capacitor Based Circuit Element to introduce RC timing behaviour, all mounted on the same Plug-In Board for Building Components.

Why Choose Lab Glassware Manufacturer

Lab Glassware Manufacturer supplies educational laboratory products for schools, colleges, universities, science laboratories, and institutional procurement projects. The company supports laboratory glassware, scientific lab products, physics apparatus, electronic teaching aids, and STEM classroom equipment. Buyers can source the Red LED with Series Resistor for school tenders, electronics kits, physics labs, circuit demonstrations, and export-oriented educational supply requirements across Nigeria, Ghana, Senegal, and Côte d’Ivoire.

Frequently Asked Questions

What is a Red LED with Series Resistor used for?
A Red LED with Series Resistor is used as a visible indicator in school physics and electronics circuits. It helps students observe current flow, polarity, and circuit completion.

Why is a series resistor used with an LED?
A series resistor limits current through the LED. This helps protect the LED from excessive current when it is used with a compatible low-voltage supply.

Is this component suitable for school students?
Yes. It is suitable for supervised school and STEM experiments when connected to a correctly rated low-voltage circuit.

Does LED polarity matter?
Yes. An LED is polarity-sensitive and should be connected according to the circuit diagram. If connected in reverse, it may not glow.

What resistor value is included?
The resistor value should be confirmed before publication or purchase. The final value must match the intended voltage supply and experiment design.

What details should be confirmed before purchase?
Confirm the LED rating, resistor value, voltage rating, current rating, connector style, compatible board type, quantity, and whether accessories are included.

Related Products

• Plug-In LED Red Top
• Resistance Based Circuit Element
• Plug-In Board for Building Components

Request a Quote

For pricing, bulk school and college orders, or export tender submissions for the Red LED with Series Resistor, please contact Lab Glassware Manufacturer or view current lab equipment tenders.

Last updated: September 2026