The Kingbright DA04-11EWA is a 10mm (0.4 inch) Dual Digit Numeric Display with a High Efficiency Red light source. This robust display is crafted for applications requiring clear numerical visibility and is suitable for a wide range of electronic devices and systems.

**Key Features:**
- **0.4 inch digit height** for superior visibility.
- **Low current operation** ensuring energy efficiency.
- **Excellent character appearance** with crisp and clear digits.
- **Easy mounting** on PC boards or sockets for flexible installation.
- **Two-digit package** that simplifies alignment and assembly.
- **Mechanically rugged** for durability in various environments.
- **Standard** package includes a gray face with white segments.
- **RoHS compliant**, adhering to environmental standards.

**Technical Specifications:**
- **Peak Wavelength** (λpeak): 627 nm at IF=10mA.
- **Dominant Wavelength** (λdom): 617 nm at IF=10mA.
- **Spectral Bandwidth at 50%**: 45 nm at IF=10mA.
- **Capacitance** (C): 15 pF at VF=0V; f=1MHz.
- **Forward Voltage** (VF): 1.9 to 2.3 V at IF=10mA.
- **Reverse Current** (IR): -10 µA at VR=5V.
- **Power Dissipation** (PD): 75 mW.
- **DC Forward Current**: 30 mA.
- **Peak Forward Current**: 160 mA.
- **Reverse Voltage**: 5 V.
- **Operating/Storage Temperature**: -40°C to +85°C.
- **Lead Solder Temperature**: 260°C for 3-5 seconds.

**Applications:**
- Ideal for **home and smart appliances** that require bright and clear numerical displays.
- Perfect for displaying **time and digital combinations**.
- Suitable for **industrial and instrumental applications** needing robust displays.
- Excellent for **numeric status indicators** in various electronic systems.

**Design and Construction:**
- Made with Gallium Arsenide Phosphide on Gallium Phosphide Orange Light Emitting Diode for a bright and efficient red light.
- Designed with precautions against electrostatic discharge and power surges, recommending the use of anti-static measures during handling.

**Packaging & Label Specifications:**
- The DA04-11EWA is meticulously packaged to ensure safe and secure delivery, with detailed specifications and usage instructions provided.

**Soldering and Cleaning Recommendations:**
- Through-hole displays are not compatible with reflow soldering.
- Use mild "no-clean" fluxes for soldering and water for cleaning to avoid damage to plastic parts.
- Clean at room temperature and dry immediately with forced air to remove moisture.

**Circuit Design Notes:**
- Use protective current-limiting resistors to operate LEDs within the specified range.
- Design the driving circuit to protect against reverse voltages and voltage spikes.
- Choose the safe operating current considering the maximum ambient temperature.
- Avoid prolonged reverse bias to prevent metal migration and potential issues.

**Precautionary Notes:**
- The document provides information for technical reference and typical usage scenarios.
- Specifications are subject to change; refer to the latest datasheet before production.
- Operate products within the limits specified in the datasheet.
- For applications with special reliability requirements, consult with Kingbright.
- Do not reproduce or transmit the document's information without permission.
- For special processes like potting, consult with Kingbright before proceeding.

The Kingbright DA04-11EWA offers a blend of brightness, efficiency, and durability, making it an excellent choice for applications where clear numerical display is paramount.