SMD seven segment display 0.3 inch 2 digit

SMD seven segment display 0.3 inch 2 digit

Series No:





14.8 x 12 x 3.75

Character Height: (inch)

0.30 inch





The Revolution in Electronics: The SMD Seven Segment Display 0.3 Inch 2 Digit

In the ever-evolving world of electronic displays, the SMD (Surface-Mount Device) Seven Segment Display, particularly the 0.3 inch 2 digit model, represents a significant leap forward. Designed to meet the rigorous demands of modern electronics manufacturing, this compact, yet powerful display technology offers unparalleled clarity, efficiency, and versatility. Aimed at electronics manufacturers, engineers, purchasers, and administrators, this article delves into the features, applications, benefits, case studies, and user testimonials that highlight the transformative impact of the SMD seven segment display on the electronics industry.


The 7 segment SMD display, especially the 2 digit LED display variant, has become a staple in the design of consumer and industrial electronic devices. Its ability to convey numerical information in a clear, concise manner, coupled with its compact footprint, makes it an ideal choice for a wide range of applications.

Unveiling the Features

The SMD seven segment display 0.3 inch 2 digit model stands out for several reasons. Its size allows for integration into smaller devices without sacrificing readability. The SMD technology ensures enhanced durability and reliability, especially in environments subject to vibration and shock. Furthermore, its energy efficiency is a hallmark, providing significant advantages in battery-powered applications.

Diverse Applications

From digital clocks and calculators to more sophisticated equipment like medical devices and control panels, the flexibility of the 7 segment cathode display is evident. Its ability to operate in a broad range of temperatures and lighting conditions makes it a versatile choice for both indoor and outdoor applications.

Advantages and Benefits

The 2 digit 7 segment display offers notable benefits, including reduced power consumption, which extends the life of portable devices, and improved visibility, which enhances user experience. Its SMD design simplifies the assembly process, leading to lower manufacturing costs and increased production efficiency.

Real-World Impact: Case Studies

One compelling case study involves a handheld medical device that experienced a significant improvement in battery life and display clarity after switching to the SMD seven segment display 0.3 inch 2 digit model. This change not only improved the device’s usability but also its reliability, a critical factor in medical applications.

User Testimonials

Feedback from the field reinforces the display’s value. An electronics engineer noted, “The switch to the 0.3 inch SMD display transformed our product’s design, making it more compact and energy-efficient without compromising on visibility.”

Conclusion: Leading the Display Revolution

The SMD seven segment display 0.3 inch 2 digit is more than just a component; it’s a catalyst for innovation in the electronics industry. Its adoption can significantly enhance the performance and appeal of electronic devices, offering a competitive edge in a crowded market.

Discover the Difference with Advanced SMD Technology

Embrace the future of electronic displays with the SMD seven segment display. Experience the benefits of compact size, superior clarity, and exceptional efficiency in your next project.

SMD seven segment display 0.3 inch 2 digit
SMD seven segment display 0.3 inch 2 digit


  • 0.30 Inch Digit Height (7.62mm): Compact size ideal for applications where space-saving is crucial without compromising on visibility.
  • Dimensions: Measuring 14.8 x 12.00 mm, it is well-suited for small-scale electronic devices.
  • Single Decimal Point: Adds versatility for displaying decimal numerical values.
  • Single LED Chip Per Segment: Ensures uniform brightness and clear character appearance.
  • Common Anode or Common Cathode Configuration: Offers flexibility in electronic design, accommodating different circuit requirements.
  • Low Current Operation: Energy-efficient, making it suitable for battery-operated devices.
  • Excellent Character Appearance: Provides sharp and clear numeric displays for easy readability.
  • High Light Output: Bright enough to be visible under various lighting conditions.
  • Easy Mounting on PC Boards: Simplifies the assembly process on printed circuit boards.
  • Multicolor Availability: Available in different colors to fit various design preferences and applications.
  • Categorized for Luminous Intensity: Ensures consistency in brightness across different units.
  • Technically Rugged: Durable and reliable, built to withstand various operational conditions.
  • Standard Design: Comes with a standard gray surface and white segments for a classic display look.
  • RoHS Compliance: Manufactured following environmental and health safety standards.


  • Electronic Devices: Ideal for compact electronic devices like calculators, handheld meters, and small-scale digital displays.
  • Consumer Electronics: Used in appliances such as digital thermometers, small audio devices, and other household electronics.
  • Wearable Technology: Suitable for wearable devices like fitness trackers and smartwatches, where space is limited.
  • Medical Equipment: Employed in medical devices for displaying readings such as pulse oximeters and compact patient monitors.
  • Automotive Displays: Applicable for small indicator displays in car dashboards, such as warning lights or small gauge readouts.
  • Telecommunication Devices: Used in network hardware for displaying signal strength or channel numbers.
  • Portable Instruments: Ideal for portable measurement devices like digital multimeters, environmental testers, and more.
  • Control Panels: Suitable for small control panels in machinery, elevators, or HVAC systems.
Electrical-optical characteristics:
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Package configuration & Internal circuit diagram
SMD seven segment display 0.3 inch 2 digit

All dimensions are in millimeters(inches)
Tolerance is +-0.25(0.01″) unless otherwise note
Specifications are subject to change without notice.

Partno description:

LED seven segment , called also LED numeric display, is widely applied in home appliance panel display and other application.

Part No of Seven segment LED display

More information

Reflector Surface color (1st number)/ Segment Lens color (2nd number):

Ref Surface ColorWhiteBlackGrayRedGreen 
Epoxy ColorWater clearWhite diffusedRed DiffusedGreen DiffusedYellow Diffused 

Absolute maximum ratings (Ta= 25°C)

Parameter SDUREYGUnit
Forward Current IF 252525252530mA
Power Dissipation Pd 606060606065mW
Reverse Voltage VR 555555V
Peak Forward Current IPF (Duty 1/10 @1KHZ) 150150150150150150mA
Operation Temperature TOPR-40 to +80°C
Storage Temperature TSTG-40 to +85°C
Lead Soldering Temperature TSOL  Max.260+ 5°C for 3 sec Max. ( 1.6mm from the base of the epoxy bulb)°C

Absolute maximum ratings (Ta= 25°C)

Forward Current IF3030303030303030mA
Power Dissipation Pd7565656575110120120mW
Reverse Voltage VR55555555V
Peak Forward Current IPF (Duty 1/10 @1KHZ)150150150150150150100100mA
Operation Temperature TOPR-40 to +80°C
Storage Temperature TSTG-40 to +85°C
Lead Soldering Temperature TSOLMax.260+ 5°C for 3 sec Max. ( 1.6mm from the base of the epoxy bulb)°C
Related Information

Applied for:
dvd player radio train instrument refrigerator

1. Application
The Seven Segment LED is widely applied for ordinary electronic equipment (such as office equipment,
communication equipment and household applications). Checking with BETLUX’s Sales in
advance for information on applications in which exceptional reliability is required, particularly
when the failure or malfunction of the LEDs may directly jeopardize life or health (such as in
aviation, transportation, traffic control equipment, medical and life support systems and safety

2. Storage
The storage ambient for the Seven Segment LED should not exceed 30℃ temperature or 70% relative humidity.
For extended storage out of their original packaging, it is recommended that the Seven Segment LEDs be stored
in a sealed container with appropriate desiccant, or in a desiccator with nitrogen ambient.

3. Cleaning
Avoid using any unspecified chemical solvent to clean LED . For example, Trichloroethylene, Chlorosen, Acetone, and Diflon S3MC.
Any cleaning method can only be taken under normal temperature in one minute or less if it is required.
Use water to clean the Seven Segment LED if necessary under room temperature
dry it immediately after that.

Any unsuitable stress applied to the epoxy may break bonding wires in LED
Any forming on lead pin must be done before soldering, not during or after soldering.
Avoid applying any stress to resin in order to prevent the epoxy fracture and break on bonding wire.
While forming, please use a tie bar cut or equivalent to hold or bend the pin.
2mm from the base of resin is the minimum distance for the place bending the lead pin.
Avoid bending the lead pin at the same point twice or more.

seven segment display forming caution


When soldering, leave a minimum of 2mm clearance from the base of the base of the lens to the soldering point. Dipping the lens into the solder must be avoided.

Do not apply any external stress to the lead frame during soldering while the LED is at high temperature.

Recommended soldering conditions:


IR Reflow Soldering (for SMD display)Wave SolderingSoldering Iron
Pre-Heat150-180°CPre-Heat100°C Max.Temperature300°C Max.
Pre-Heat Time120sec Max.Pre-Heat Time60sec Max.
Peak Temperature260°C Max.SolderWave260°C Max.Soldering Time3sec Max.(one time only)
Soldering Time10 sec Max.Soldering Time5sec Max.

Note: Excessive soldering temperature and/or time might result in deformation of the LED lens or failure of the LED

ESD(Electrostatic Discharge)

Static Electricity or power surge will damage the LED.

Suggestions to prevent ESD (Electrostatic Discharge):

n Use a conductive wrist band or anti-electrostatic glove when handling these LEDs

n All devices, equipment, and machinery must be properly grounded

n Work tables, storage racks, etc. should be properly grounded

n Use ion blower to neutralize the static charge which might have built up on surface of the LED’s

 plastic lens as a result of friction between LEDs during storage and handling

ESD-damaged LEDs will exhibit abnormal characteristics such as high reverse leakage current, 

low forward voltage, or “no light on” at low currents. To verify for ESD damage, check for “light on” 

and Vf of the suspect LEDs at low currents.

The Vf of “good” LEDs should be>2.0V@0.1mA for InGaN product and >1.4V@0.1mA for AlInGaP


antistatic notice-smd led

LED dirve IC by  Maxim Integrated

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 MAX6952  5 x 7 Matrix LED Display Driver

 MAX6957  LED Static Display Driver and I/O Port

MAX6950  5-Digit LED Display Driver

 MAX6951  8-Digit LED Display Driver

 ICM7212  4-Digit LED Driver

 ICM7212A  4-Digit LED Driver

 ICM7212AM  4-Digit LED Driver

 ICM7212M  4-Digit LED Driver

 ICM7218A  8-Digit LED Driver

 ICM7218B  8-Digit LED Driver

 ICM7218C  8-Digit LED Driver

 ICM7218D  8-Digit LED Driver

 MAX7221  8-Digit LED Display Driver

 MAX7219  8-Digit LED Display Driver

 provide in-depth design and IC selection help for design engineers.  Each solution is dedicated to a popular end-equipment type and features design information, circuits and a block diagram.   Within a block diagram, click on a block to view best-fit integrated circuits recommended by Maxim engineers.

When selecting power for LED systems, it’s essential to understand several key parameters to ensure safe operation, longevity, and optimal performance. Here are some steps and considerations for LED power selection:

  • Determine the Forward Voltage (Vf) of the LED(s):

Each LED has a forward voltage, which is the voltage at which the LED operates when the current is flowing through it. This value can typically be found in the LED’s datasheet.

  • Determine the Forward Current (If) of the LED(s):

The forward current is the current at which the LED is designed to operate. Running an LED at higher than its rated current can reduce its lifespan and increase the heat it produces.

  • Decide on the Configuration:

Series Configuration: When LEDs are connected in series, the forward voltages add up, but the current remains the same.

Parallel Configuration: When LEDs are connected in parallel, the forward voltage remains the same, but the currents add up. This configuration can be risky because if one LED fails or has a slightly lower forward voltage, it can cause the other LEDs to draw more current.

Calculate Total Power Requirements:

Power (W) = Total Forward Voltage (V) x Total Forward Current (A)

For example, if you have three LEDs connected in series, each with a forward voltage of 3V and a forward current of 20mA, the total power requirement would be:

Power = (3V + 3V + 3V) x 20mA = 9V x 0.02A = 0.18W

  • Select an Appropriate Power Supply:
  • Voltage Rating: The power supply voltage should match or slightly exceed the total forward voltage of your LED configuration.
  • Current Rating: The power supply’s current rating should meet or exceed the total forward current of your LED configuration.
  • Safety Margin: It’s a good practice to select a power supply that can provide at least 20% more power than your calculated requirement. This ensures the power supply isn’t operating at its maximum capacity, which can extend its life and ensure safer operation.
  • Consider Additional Features:
  • Dimming Capability: If you want to control the brightness of your LEDs, choose a power supply with dimming capabilities.
  • Overcurrent and Overvoltage Protection: To protect your LEDs, select a power supply with built-in protection mechanisms.
  • Thermal Management: Ensure that the power supply has adequate cooling, especially if it will be enclosed or in a location with limited airflow.
  • Regulation and Efficiency:A power supply with good regulation will maintain a consistent voltage output despite variations in the load. High efficiency ensures minimal power is wasted as heat.
  • Physical Size and Form Factor:Depending on where you plan to place the power supply, its size and shape may be critical factors.

In summary, when selecting power for LED systems, understanding your LED’s requirements and the configuration you plan to use is essential. Then, pick a power supply that meets those needs with some added safety margin, keeping in mind any additional features or constraints relevant to your project.

Here are some well-regarded brands in the industry:

  • Mean Well: One of the most recognized brands in the LED power supply industry, Mean Well offers a wide range of products suitable for both indoor and outdoor applications. Their units often come with features like overcurrent protection, dimming capabilities, and high efficiency.
  • Tridonic: A global leader in lighting technology, Tridonic offers LED drivers and power supplies that cater to various lighting solutions, from simple setups to advanced smart lighting systems.
  • Philips Advance Xitanium: Philips is a well-known brand in the lighting industry, and their Xitanium series of LED drivers are known for reliability and performance. They cater to both indoor and outdoor LED applications.
  • Osram: Another giant in the lighting industry, Osram offers a range of LED drivers and power supplies suitable for various applications, including architectural and street lighting.
  • LIFUD: Specializing in LED drivers, LIFUD is known for its high-quality products that cater to both commercial and residential LED lighting solutions.
  • MOSO: This brand offers a variety of LED drivers, especially for outdoor and industrial applications. Their products are known for durability and performance.
  • TDK-Lambda: With a history in power electronics, TDK-Lambda offers a range of power supplies and LED drivers suitable for various applications, emphasizing reliability and advanced features.
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