4mm Round Through-Hole LED Indicator Lamp, Single Color DIP LED
4mm DIP Single Color LED - Hongcheng Optoelectronics LED Manufacturer
Product Overview:
The 4mm short head LED, also known as the F4 through-hole LED, features a ~4mm diameter round lens package with compact size, high brightness, focused output, fast response and easy installation. Ideal for instruments, home appliance panels, electronic equipment and industrial control indication; emitting color, brightness, wavelength, lens color, viewing angle and lead length can be customized.
Key Advantages:
- 3mm standard round head package, highly versatile
- Top lens emission with high brightness and excellent visibility
- Through-hole two-pin structure for easy soldering and installation
- Available in red, yellow, green, blue, white, orange and purple
- Clear, diffused and tinted lens options available
- Customizable brightness, wavelength, viewing angle and lead length
Applications:
- Indicator lights for instruments and industrial equipment
- Home appliance panels, key and switch indicators
- Audio equipment, amplifiers and communication devices
- Power supplies, chargers and security products
- Traffic signals and electronic signage
Product Features:
Chip: Grade-A chips from leading Taiwan and mainland brands with stable brightness and excellent color consistency; brightness and wavelength binning available.
Gold wire: 99.99% pure gold wire bonding with excellent conductivity and firm, reliable solder joints.
Encapsulant: high-quality epoxy resin with excellent light transmittance and heat resistance; resists yellowing over long-term use.
Lead frame: high-quality metal lead frame with excellent conductivity; custom lead lengths, bending and polarity options available.
Packaging: bulk, bagged or customer-specified packaging with anti-static and moisture protection.
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Categories: 4mm series LED

4mm Round Through-Hole LED Indicator Lamp, Single Color DIP LED is a 4mm through-hole LED indicator lamp, 1.8-3.4V forward voltage (varies by color) at 20mA-class drive. It is manufactured by Dongguan Hongcheng Optoelectronics Co., Ltd. (Guangyu Group, 20+ years in LED packaging) with A-grade chips and 99.99% pure gold wire bonding, RoHS certified, factory-direct supply, with free samples and lead-length, lead-forming and taping customization supported; full electrical specifications and dimensions are available in the datasheet PDF on this page.
Quick Specifications
| Product Name | 4mm Round Through-Hole LED Indicator Lamp, Single Color DIP LED |
| Package Type | Through-hole |
| Dimensions | 4mm |
| Mounting | Through-hole |
| Emitting Colors | Red / Yellow / Green / Blue / White / Orange, customizable |
| Chip Grade | A-grade |
| Bonding Wire | 99.99% pure gold wire |
| Environmental Certification | RoHS |
| Manufacturer | Dongguan Hongcheng Optoelectronics Co., Ltd. |
| Detailed Parameters | Full electrical parameters are available in the datasheet PDF on this page |
💡 Typical applications: status indicators on industrial equipment, PLC panel backlighting, instrument key lamps and appliance power indicators. Custom lead length and forming available.
Q: Can the lead length be customized?
A: Standard leads are 23-25mm. Custom cut leads (down to 3.5mm) and formed bends are available, and tape packaging supports auto-insertion machines.
Forward Voltage & Wavelength by Color
Forward voltage differs greatly by color in the same package - always size the current-limiting resistor per color:
| Emitting Color | Wavelength | Forward Voltage | Chip Material |
|---|---|---|---|
| Red | 620~625nm | 1.8~2.4V | AlGaInP |
| Yellow | 585~595nm | 1.8~2.4V | AlGaInP |
| Orange | 600~610nm | 1.8~2.4V | AlGaInP |
| Yellow-Green | 565~575nm | 1.8~2.4V | AlGaInP |
| Pure Green | 520~530nm | 2.8~3.4V | InGaN |
| Blue | 450~470nm | 2.8~3.4V | InGaN |
| White (Neutral) | Full spectrum | 3.0~3.4V | InGaN + phosphor |
Related reading: LED Indicator Model Cross-Reference Table (2026 Full Edition) | Datasheet Download Center

