0.30 inch dual-digit alpha-numeric led display
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![]() Series No:bl-d30a-23 Dimension 15.5 × 15 × 4 mm Description: ___________________________________________________________________________________________________________________________________________________ "Compact Precision: The 0.30 Inch Dual-Digit Alpha-Numeric LED Display" IntroductionThe 0.30 inch dual-digit alpha-numeric LED display is a compact and efficient solution designed for high-visibility character representation in modern electronic devices. Known for its versatility, this alpha-numeric display can represent both letters and numbers, making it indispensable in various digital readout systems. Whether used in industrial control equipment, consumer electronics, or test instruments, it combines durability with high performance. At its core, the dual alpha-numeric LED display uses a segment-based illumination system capable of forming characters and numerals with exceptional clarity. Its small footprint, low power consumption, and long operational life make it ideal for engineers, product designers, and manufacturers who prioritize readability and reliability in confined spaces. The alpha-numeric display technology continues to evolve, providing flexibility in design and consistent brightness across diverse environments. For compact electronic interfaces, this 0.30 inch display strikes the perfect balance between visibility and space efficiency. Features of the 0.30 Inch Dual-Digit Alpha-Numeric LED DisplayThe 7-segment and 14-segment LED structures form the backbone of alpha-numeric displays. The 0.30 inch dual-digit alpha-numeric LED display incorporates fine-tuned optical and electrical characteristics that ensure dependable output. 1. Compact 0.30 Inch HeightIts small size makes it ideal for space-limited applications, including handheld instruments and compact control panels. Despite its compactness, it offers excellent brightness and legibility. 2. Dual-Digit ConfigurationThis dual alpha-numeric LED display supports simultaneous two-character output—essential for reading multi-character codes, identifiers, or values. 3. High Contrast and Bright IlluminationEach segment provides uniform brightness, ensuring clarity even under strong ambient light. 4. Multi-Character CapabilityUnlike basic numeric indicators, the alpha-numeric display can represent letters A–Z and numerals 0–9, making it perfect for text or mixed data representation. 5. Efficient Power UsageBuilt to operate with minimal current, this display supports long battery life and energy-efficient circuit design. 6. Available in Multiple Color OptionsChoose from red, green, blue, or amber displays to suit the desired visual effect or functional requirement. 7. Common Anode/Cathode CompatibilityDesigned to work with both circuit configurations, allowing flexibility in system design. 8. Rugged ConstructionEncased in a durable epoxy housing that resists vibration, shock, and heat—ensuring reliability in industrial environments. Applications of the Alpha-Numeric DisplayThe 0.30 inch dual-digit alpha-numeric LED display has a broad range of applications where visual information must be concise yet easily readable. 1. Industrial Control SystemsIn process controllers, this 2 digit LED segment display helps communicate operational statuses, set points, or fault codes. 2. Consumer ElectronicsUsed in household appliances, audio equipment, and digital timers for clear numeric and text-based readouts. 3. Measurement DevicesFound in multimeters, power supplies, and temperature sensors to show precise readings through compact alphanumeric display designs. 4. Communication EquipmentEmployed in devices like routers, signal meters, and networking tools to indicate channels or connection statuses. 5. Instrumentation PanelsIndustrial and lab instruments benefit from the easy-to-read, dual-character data visualization provided by this display type. 6. Medical EquipmentPortable diagnostic and monitoring devices use the dual alpha-numeric LED display for precise, compact readouts without sacrificing clarity. Benefits of the 0.30 Inch Dual-Digit Alpha-Numeric DisplayThe display’s design offers multiple advantages that make it a preferred choice among engineers and manufacturers:
Case StudiesCase Study 1 – Digital Audio Amplifier Manufacturer (South Korea)A South Korean audio equipment manufacturer integrated the 0.30 inch dual alpha-numeric LED display into their amplifier control panels. The display provided real-time volume and mode indication while complementing the product’s aesthetic. The result was improved user feedback and a 15% increase in positive product reviews. Case Study 2 – Portable Testing Device (Germany)A German instrumentation firm used the 2 digit LED segment display in a handheld resistance meter. Engineers praised its clarity and visibility under laboratory and field lighting conditions. The display’s efficiency also extended the device’s battery life by 20%. Case Study 3 – Industrial Automation (USA)A U.S. automation company deployed the alphanumeric display in compact controllers. The dual-character output allowed for short diagnostic messages and parameter identification. The rugged housing maintained stable performance in vibration-heavy environments. User TestimonialsMark T., Electronics Engineer (UK): Linda S., Product Manager (Canada): Hiroshi K., PCB Design Engineer (Japan): Design Integration and Technical TipsTo ensure peak performance and longevity of the 0.30 inch dual-digit alpha-numeric LED display, engineers should consider the following:
ConclusionThe 0.30 inch dual-digit alpha-numeric LED display offers an exceptional combination of readability, compactness, and energy efficiency. As devices grow smaller yet demand higher display precision, this alpha-numeric display bridges the gap between function and form. Whether used in industrial control systems, measurement devices, or consumer products, the dual alpha-numeric LED display stands out for its clarity, durability, and design flexibility. Engineers and manufacturers seeking a dependable, visually appealing display solution will find this product an essential addition to their toolkit. Enhance your electronic design with the 2 digit LED segment display, where precision and performance come together in one compact package. ![]() Features
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Soldering
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 Soldering | Soldering Iron | |||
| Pre-Heat | 150-180°C | Pre-Heat | 100°C Max. | Temperature | 300°C Max. |
| Pre-Heat Time | 120sec Max. | Pre-Heat Time | 60sec Max. | ||
| Peak Temperature | 260°C Max. | SolderWave | 260°C Max. | Soldering Time | 3sec Max.(one time only) |
| Soldering Time | 10 sec Max. | Soldering Time | 5sec 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
product.
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.







