4020 Side-Emitting LED
4020 Side-emitting LEDs - Hongcheng Optoelectronics LED Manufacturer
Product Overview:
The 4020 side-emitting SMD LED uses a standard SMD 4020 package, approximately 4.0×2.0mm. Light emits from the side of the device, making it suitable for products with limited installation space or requiring side emission. It features stable brightness, uniform light, fast response, high reliability and easy installation. Available emission colors include red, yellow, green, blue and white.
Key Advantages:
- 4020 side-emitting SMD package saves installation space
- Side emission for light-guide plates and narrow-bezel designs
- Uniform, concentrated light and stable brightness
- Fast response and long service life
- Supports automated placement and lead-free reflow soldering
- Various colors and brightness specifications available
- Color, color temperature and viewing angle can be customized to customer requirements
Applications:
- LCD and display-module backlighting
- Instruments and control panels
- Home appliance status indication
- Automotive instruments and onboard electronics
- Communications equipment and small displays
- Button, light-pipe and light-guide-plate illumination
- Smart home and consumer electronics products
Product Features:
Chip: High-quality LED chips with high luminous efficacy, stable brightness and good color consistency.
Emission: Side-emitting structure meets special-angle and narrow-space lighting requirements.
Package: High-transmission encapsulation materials with good heat, moisture and aging resistance.
Lead frame: a highly reliable SMD lead frame offers stable solder joints for automated production.
Packaging: Tape-and-reel packaging for high-speed placement machines and reflow soldering lines.
Category: 4020 Side-Emitting SMD
Quick Reference: Key Optoelectronic Parameters (by Emission Color)
Test conditions: See the IF column for test current; ambient temperature 25℃. Data is taken from each model's datasheet. “—” indicates that the datasheet does not specify this item. Download the corresponding PDF for complete specifications.
| Emission Color | Part Number | Forward Voltage VF (V) | Wavelength / Color Temperature CCT | Luminous Intensity Iv (mcd) | Viewing Angle 2θ½ (°) | Test Current IF (mA) | Operating Temperature |
|---|---|---|---|---|---|---|---|
| White | HC-4020TWC-AL-1 | 2.6~3.2 | 6000~8000 K | 2000~3000 | 120 | 20 | -40 ~ +80℃ |
| Pure Green | HC-4020TG4C-BHG | 2.6~3.2 | 520~525 nm | 1000~2000 | 120 | 20 | -20 ~ +80℃ |
| Red | HC-4020TR3C-BL-2 | 2.6~3.2 | 620~630 nm | 400~600 | 120 | 20 | -40 ~ +80℃ |
| Blue | HC-4020TB4C-BHG | 2.6~3.2 | 460~470 nm | 200~400 | 120 | 20 | -40 ~ +80℃ |
Q: How is the placement orientation of side-emitting LEDs determined?
A: Orient the emitting surface toward the light-entry side of the light guide panel. The first datasheet page includes a placement orientation diagram. Contact our engineering team for stencil aperture and pad design recommendations.
Q: What placement-machine accuracy does this LED require?
A: This product uses a 4020 package (4.0×2.0mm) with relatively large pads. Standard high-speed placement machines are adequate, with no special equipment accuracy requirements. Supports lead-free reflow soldering (peak ≤260℃/≤3s).
Product Specifications at a Glance
| Product Name | 4020 Side-emitting LEDs |
|---|---|
| Package: | SMD Package (Side-emitting) |
| Dimensions | 4.0×2.0mm (4020 package) |
| Mounting: | SMD surface mounting (suitable for reflow soldering) |
| Emission Color | Single colors available (red, yellow, green, blue, white, etc.) |
| Environmental Certification | RoHS |
| Packaging Quantity | 2,000 pcs/reel (taped) |
| Manufacturer | Dongguan Hongcheng Optoelectronics Co., Ltd. |
| Customization: | Custom colors, brightness and wavelength binning, and encapsulants available; confirm details when requesting a quote |
| Detailed Specifications | See the datasheet PDF on this page for complete electrical parameters |
| Minimum Order Quantity (MOQ) | 2K (2,000 pcs, 1 tape-and-reel) |
| Sample Lead Time | Typically 3-4 working days |
| Volume Production Lead Time | Typically 10-15 working days |
💡 Typical Applications: Common applications include LCD and display module backlighting, instruments and control panels, home appliance status indication, automotive instruments and in-vehicle electronics.
Forward Voltage and Wavelength Quick Reference by Color
Voltage varies significantly between colors in the same package. Select current-limiting resistors using the values for the specific color:
| Emission Color | Wavelength Range | 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 |
| Standard Green | 565~575nm | 1.8~2.4V | AlGaInP |
| Emerald Green | 520~530nm | 2.8~3.4V | InGaN |
| Blue | 450~470nm | 2.8~3.4V | InGaN |
| White (Neutral White) | Full Spectrum | 3.0~3.4V | InGaN + phosphor |
Ordering and Inquiry Information
SMD models use tape-and-reel packaging (quantity per reel is subject to the corresponding datasheet), with minimum orders in full reels. Sample lead time is typically 3-4 working days; volume production lead time is typically 10-15 working days (subject to order confirmation). For volume pricing, use the inquiry link on this page or phone/WeChat 139 2571 4318. Specify the exact part number and quantity.
Selection Recommendations
Forward voltage varies considerably by color/model (commonly 1.8~3.4V). Calculate current-limiting resistors using the VF range in the selected model's datasheet, and set the reflow profile according to the corresponding datasheet.
Related Reading: LED Indicator Part Number Comparison Table (Complete 2026 Edition) ｜ Datasheet Download Center
Note: The parameters on this page were compiled against product documentation on 2026-09-17. Items not provided in a datasheet are not assigned uniform values. Refer to the datasheet for the relevant part number.
