7 Segment Led Display (Common Cathode)
7 Segment Led Display (Common Cathode)
7 Segment LED Display (Common Cathode)
Display digits 0-9 with crisp, bright red output using this classic Common Cathode 7-segment LED display. A staple component for counters, clocks, scoreboards, and embedded system projects, this single-digit display is easy to interface with Arduino, Raspberry Pi, 8051, and other microcontrollers. Available at The Tech Depot, Bengaluru - your trusted source for quality electronics with fast shipping and dedicated support.
Specifications
| Display Type | Single Digit, 7-Segment LED (plus decimal point) |
| Configuration | Common Cathode (shared ground pin) |
| LED Color | Red (standard) |
| Forward Voltage | 1.8 V - 2.2 V per segment (typical) |
| Forward Current | 20 mA per segment (max) |
| Number of Pins | 10 (7 segment pins + 1 DP pin + 2 common cathode pins) |
| Digit Height | 0.56 inch (14.2 mm) - standard size |
| Package Dimensions | Approx. 19 mm x 12.7 mm x 8 mm |
| Viewing Angle | Wide - clearly visible from multiple angles |
| Operating Temperature | -40 degreesC to +80 degreesC |
| Luminous Intensity | Bright and uniform across all segments |
| Compatibility | Arduino, Raspberry Pi, 8051, PIC, STM32, ESP32, and all 3.3 V / 5 V logic |
| Driver ICs (Recommended) | 74HC595 (shift register), BCD 7447 / CD4511 decoder, MAX7219 |
| Type | Electronics Component - Optoelectronics / Display |
| Origin | Original / Authentic |
| Warranty | 7-day warranty on manufacturing defects |
| Support | Email & WhatsApp 24/7 |
How Common Cathode Works
In a Common Cathode configuration, all the cathode pins of the seven LED segments (plus the decimal point) are connected together and tied to GND. To light up a specific segment, you send a HIGH signal to the corresponding anode pin through a current-limiting resistor (typically 220 Ohm - 330 Ohm). This makes driving the display with microcontrollers straightforward - a HIGH output turns a segment ON, and a LOW turns it OFF.
Pin Configuration
| Pin | Segment | Description |
| a | Top horizontal | Anode for segment A |
| b | Top-right vertical | Anode for segment B |
| c | Bottom-right vertical | Anode for segment C |
| d | Bottom horizontal | Anode for segment D |
| e | Bottom-left vertical | Anode for segment E |
| f | Top-left vertical | Anode for segment F |
| g | Middle horizontal | Anode for segment G |
| DP | Decimal point | Anode for decimal point |
| COM | Common Cathode (x2) | Connect to GND |
Why Choose This?
- 100% authentic from trusted and authorized suppliers
- Bright, uniform illumination - all seven segments light evenly for clear digit readability
- Easy microcontroller interfacing - HIGH = ON logic simplifies code and wiring for beginners
- Standard 0.56 size - fits breadboards and standard PCB footprints perfectly
- Low power consumption - ideal for battery-powered and portable projects
- Wide operating temperature range - reliable performance in varied environments
- Cascadable - combine multiple digits with multiplexing or shift registers for multi-digit displays
- 1-5 day shipping, 7-8 day delivery from our Bengaluru warehouse; same-day delivery within Bengaluru
- Expert technical support included with every purchase
Project Ideas
- Digital Clock: Use four 7-segment displays with an RTC module (DS1307/DS3231) and Arduino to build a real-time clock with hours and minutes.
- Visitor / Object Counter: Pair with an IR sensor or ultrasonic sensor
Frequently Asked Questions
When will I receive my order?
Products ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.
Is technical support available?
Yes, 24/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.
What is your return policy?
7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.
Are bulk discounts available?
Yes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.
Buy 7 Segment Led Display (Common Cathode) Online in India
Purchase the 7 Segment Led Display (Common Cathode) online at The Tech Depot - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on 7 Segment Led Display (Common Cathode) with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.
Looking to buy 7 Segment Led Display (Common Cathode) at the best price in India? The Tech Depot offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.