📌 Product Overview
The JIS7021 is a high-power Surface Mount Device (SMD) LED 📦 featuring a compact 2.5mm x 2.5mm x 1.85mm form factor. It utilizes a yellow chip with a transparent colloid to deliver a dominant wavelength of 590nm (Amber). This component is specifically engineered for applications requiring high optical output power and robust thermal performance, such as mobile camera flashes and signal lights. 💡 Designers must prioritize thermal management given the 1000mA drive current capability to ensure long-term reliability.
💼 Typical Applications
Based on the datasheet parameters, the JIS7021 is optimized for high-intensity, short-duration usage and continuous signaling:
- 📸 Mobile Camera Flash: Strobe lighting for smartphones and tablets (700mA-1000mA pulse).
- 🔦 Digital Video (DV) Flashlights: Portable lighting for recording devices.
- 🚦 Signal & Symbol Lights: Indicator panels requiring high visibility and wide viewing angles.
- ✨ Decorative Lighting: Interior and exterior accent lighting in consumer electronics.
- 🚨 Warning Lights: Applications requiring the specific amber wavelength (590nm).
📊 Key Technical Specifications
The optical performance is categorized by specific binning codes (Brightness, Voltage, Wavelength) to ensure consistency. The following table outlines the typical characteristics at a test current of 700mA:
| Parameter | Symbol | Test Conditions | Min | Typ. | Max | Unit |
|---|---|---|---|---|---|---|
| Luminous Flux | Φ | IF = 700mA | 52 | - | 80 | lm |
| Forward Voltage | VF | IF = 700mA | 1.8 | - | 2.4 | V |
| Dominant Wavelength | λd | IF = 700mA | 587 | 590 | 595 | nm |
| Peak Wavelength | λp | IF = 700mA | - | 590 | - | nm |
| Viewing Angle | 2θ1/2 | IF = 700mA | - | 120 | - | Deg |
| Junction Temp | TJ | - | - | - | 125 | °C |
⚠️ Absolute Maximum Ratings & Process Limits
Exceeding these ratings may cause permanent damage to the device. ⚡ Strict adherence is required for thermal and electrical stress management.
| Parameter | Symbol | Value | Unit | Notes |
|---|---|---|---|---|
| Power Dissipation | PD | 3000 | mW | Dependent on pad layout |
| Forward Current | IF | 1000 | mA | Pulse width ≤0.1ms, Duty ≤1/10 |
| ESD Capability | ESD | 3000 | V | Human Body Model (HBM) |
| Operating Temp. | Topr | -40 to +105 | °C | Ambient range |
| Storage Temp. | Tstg | -40 to +85 | °C | |
| Lead Soldering | Tsol | 260 | °C | ≤6 Seconds |
🔒 Reliability Note: The datasheet indicates a maximum junction temperature of 125°C. Designs must maintain a thermal path (TJA) that prevents the junction from exceeding this limit under maximum load.
📦 Package, Dimensions & Assembly Notes
- Package Type: 2525 SMD (2.5mm x 2.5mm footprint).
- Dimensions: Height is 1.85mm. Tolerance for non-specified dimensions is ±0.25mm.
- Soldering Guidelines:
- 🔥 Hand Soldering: Only for repair. Use <30W iron, <300°C tip, for <3 seconds per terminal.
- 🏭 Reflow Soldering: Max 2 cycles. Recommended peak temp: 240°C ± 5°C for 6 seconds.
- ⚠️ Stress: Mechanical stress on the LED during heating must be avoided to prevent cracking.
- Moisture Sensitivity: MSL Level 3. Ensure proper baking before reflow if exposed to ambient.
🚀 Sourcing & Supply Considerations
- Binning Verification: The JIS7021 utilizes 3-tier binning for Luminous Flux (J7-J9), Voltage (N12-7 to N12-9), and Wavelength (HY04-HY06). Procurement specs must define these codes to ensure color and brightness consistency.
- Authenticity: Given the high power density, verify that supply channels provide genuine components with correct MSL packaging to prevent infield failures.
- Cross-Reference: For BOM optimization, consider standard 2525 footprint alternatives if supply constraints arise, though optical matching is required.
❓ Frequently Asked Questions
Q: What is the maximum continuous current I can drive the JIS7021 with? A: While the Absolute Maximum Rating lists 1000mA, this is typically for pulsed operations (flash). For continuous operation, you must calculate the derated current based on your specific PCB thermal performance to keep the junction temperature below 125°C.
Q: How do I read the brightness binning codes? A: The codes are defined as J7 (52-60 lm), J8 (60-70 lm), and J9 (70-80 lm). When ordering, you must specify the required bin code (e.g., J9) to guarantee the minimum brightness level for your application.
Q: Can I use leaded solder paste with this component? A: Yes, but the profile must be adjusted. The datasheet explicitly recommends a Lead-Free profile with a peak of 240°C ± 5°C. If using Leaded solder, the peak temperature should be lower, generally around 220°C, but never exceeding the absolute maximum of 260°C.
Q: What does MSL Level 3 mean for my assembly process? A: Moisture Sensitivity Level 3 means the components can be exposed to ambient air for 168 hours (1 week) before they must be reflowed. If stored longer or opened bags are not used within this time, the components must be baked according to IPC/JEDEC standards to prevent "popcorning" damage during soldering.
Q: What is the viewing angle of this LED? A: The half-light intensity angle (2θ1/2) is 120 degrees. This wide viewing angle makes it suitable for area lighting and flash applications where diffused light is preferred over a focused spot.
Q: Is the JIS7021 compliant with environmental regulations? A: Yes, the datasheet confirms it is an environmentally friendly product that meets ROHS requirements.
