📌 Product Overview
The JIS7021 is a compact, high-performance surface-mount LED 📦 featuring a 2.5mm x 2.5mm x 1.85mm form factor with a water-clear lens. It is engineered to deliver high luminous intensity and robust optical output, specifically targeting power-constrained portable devices.
💡 This component is ideally suited for space-constrained designs requiring intense illumination, such as mobile phone camera flashes and compact torches. The focus here is on balancing high drive currents (up to 1000mA pulse) with thermal management in tight PCB layouts.
🚀 Typical Applications
Based on its optical power density and compact footprint, the JIS7021 is optimized for the following scenarios:
- Mobile Camera Flash: Designed for high-intensity strobe functions in smartphones and tablets.
- Digital Video (DV) Lighting: Provides continuous or pulsed lighting for compact camcorders.
- Status & Symbolic Lighting: High-brightness indicator lights for industrial or consumer interfaces.
- Decorative Illumination: Suitable for ambient lighting effects in consumer electronics and entertainment devices.
📈 Key Technical Specifications
The table below outlines the critical optical and electrical performance metrics under standard test conditions (Ta=25°C).
| Parameter | Symbol | Test Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Luminous Flux | Φ | IF = 700mA | 80 | - | 110 | lm |
| Forward Voltage | VF | IF = 700mA | 1.8 | - | 2.4 | V |
| Peak Wavelength | λp | IF = 700mA | - | 625 | - | nm |
| Main Wavelength | λd | - | 615 | 620 | 625 | nm |
| Half-Intensity Angle | 2θ1/2 | - | - | 120 | - | Deg |
| Reverse Current | IR | VR = 5V | - | - | 5 | uA |
🔒 Absolute Maximum Ratings & Process Limits
Exceeding these values may cause permanent damage to the device. 👇 Strict adherence during circuit design and thermal simulation is required.
| Parameter | Symbol | Value | Unit | Notes |
|---|---|---|---|---|
| Power Dissipation | Pd | 3000 | mW | Dependent on PCB heatsinking |
| DC Forward Current | IF | 1000 | mA | Pulse width ≤0.1ms, Duty ≤1/10 |
| ESD Tolerance | ESD | 3000 | V | Human Body Model (HBM) |
| Junction Temp | Tj | 125 | °C | Must monitor for thermal rollover |
| Storage Temp | Tstg | -40 to +85 | °C | |
| Soldering Temp | Tsol | 260 | °C | Max 6 seconds |
⚠️ Critical Warning: While the absolute max current is 1000mA, this is strictly for pulsed operations. Continuous driving at this level without aggressive heatsinking will rapidly degrade the LED lifespan due to thermal runaway.
📦 Package, Dimensions & Assembly Notes
- Package Type: 2525 Surface Mount Device (SMD).
- Dimensions: 2.5mm (L) x 2.5mm (W) x 1.85mm (H).
- Moisture Sensitivity: MSL Level 3. 🔒 The floor life is 168 hours; bake before reflow if exposed beyond this limit to prevent popcorning.
- Soldering Guidelines:
- Reflow: Max 2 cycles. Peak temperature recommended at 240±5°C for <6 seconds. Avoid mechanical stress on the lens during heating.
- Hand Soldering: Not recommended for production. If necessary for repair, use <30W iron, <300°C tip, and limit duration to <3 seconds per pad.
🛒 Sourcing & Supply Considerations
When procuring the JIS7021 for volume production, consider the following supply chain factors:
- Binning Codes: Verify specific binning codes (Brightness K1-K3, Voltage N12-7/8/9, Wavelength HR01/02) to ensure color and flux consistency across batches.
- ** authenticity Check:** Confirm packaging dimensions match the datasheet to avoid counterfeit or off-spec components.
- Lead Time: High-power LEDs often face allocation; check current stock status for prototyping vs. mass production volumes.
❓ FAQ
Q: What is the typical forward voltage for this LED? A: The typical forward voltage (VF) ranges between 1.8V and 2.4V when driven at the test current of 700mA. Designers should account for the upper variance (2.4V) when calculating driver headroom.
Q: Can this LED be driven continuously at 1000mA? A: No. The 1000mA rating is an absolute maximum for pulsed operations (pulse width ≤0.1ms). Continuous driving at this current will likely exceed the junction temperature limit (125°C) and cause immediate failure or rapid lumen depreciation.
Q: What does Moisture Sensitivity Level (MSL) 3 mean? A: It means the components are sensitive to moisture. After opening the vacuum-sealed bag, they must be soldered within 168 hours (1 week). If not, they must be baked at specific temperatures to remove absorbed moisture before reflow soldering to prevent internal cracking.
Q: What are the storage temperature limits? A: The JIS7021 can be safely stored in environments ranging from -40°C to +85°C to prevent physical damage to the epoxy or internal wire bonds.
Q: Is hand soldering recommended for this component? A: Hand soldering is generally discouraged for the 2525 package due to its thermal mass. It is only recommended for repairs using an iron under 30W and 300°C, with contact time strictly limited to 3 seconds per terminal.
Q: How is the brightness sorted? A: Brightness is sorted into codes K1 (80-90lm), K2 (90-100lm), and K3 (100-110lm) at 700mA. Procurement orders should specify the required code to ensure uniformity in the final product.
