LNJ647W8CRA Panasonic LED (LEDs Chip) In Stock
Panasonic LNJ647W8CRA is a blue-green SMD LED in a miniature 1005 (0402) square-lens package with a peak emission wavelength of 520 nm and 10 mA maximum forward current. Rated at 3.6 V forward voltage max and 0.2 mm profile height for ultra-thin display and indicator designs. Available from stock with worldwide shipping.
- Manufacturer
- Panasonic
- Package
- LEDs Chip
- Pin Count
- 2
- Lifecycle
- OBSOLETE
- Datasheet
- LNJ647W8CRA Datasheet PDF
- Category
- LED
- Temp Range
- -30.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LNJ647W8CRA?
- 520 nm peak wavelength blue-green LED emission providing vivid visual indication in status lights, backlights, and HMI panels
- Miniature 1005 (0402) SMT package measuring 1.0 mm × 0.5 mm × 0.2 mm for ultra-compact wearable and handheld indicator designs
- 10 mA maximum forward current at up to 3.6 V forward voltage enabling reliable low-power operation from 3.3 V or 5 V logic rails
- 5 V maximum reverse voltage offering protection against accidental polarity reversal in multiplexed LED display circuits
What is LNJ647W8CRA used for?
The LNJ647W8CRA is designed for space-constrained status indicator, backlighting, and visual feedback applications in consumer electronics, wearables, and medical devices where a 1005 (0402) SMT LED footprint is required. Its 520 nm blue-green emission is well matched to human visual sensitivity, making it effective for low-power indicator lamps and optical sensors in portable devices operating from 3.3 V supply rails. The 0.2 mm package height enables integration into ultra-thin PCB assemblies and flexible circuit boards with minimal Z-axis clearance.
What are the specifications of LNJ647W8CRA?
| YTEOL | 0 |
| Color@Wavelength | Blue-Green |
| Forward Current-Max | 0.01A |
| Forward Voltage-Max | 3.6V |
| Optoelectronic Device Type | SINGLE COLOR LED |
| Overall Height | 0.2mm |
| Peak Wavelength | 520nm |
| Reverse Voltage-Max | 5V |
| Package | LEDs Chip |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| HTS Code | 8541.40.20.00 |
Where can I find the LNJ647W8CRA datasheet?
LNJ647W8CRA Datasheet DownloadOfficial datasheet from Panasonic
What are equivalent replacements for LNJ647W8CRA?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What emission wavelength and forward current specs define the LNJ647W8CRA for display design?
The LNJ647W8CRA emits at a 520 nm peak wavelength in the blue-green region of the visible spectrum, with a maximum forward current of 10 mA and a maximum forward voltage of 3.6 V. At 5 mA typical drive current from a 3.3 V rail through a 60 Ω series resistor, the LED provides adequate luminous intensity for indoor status indicators without exceeding power budgets.
Why is the 1005 (0402) package of the LNJ647W8CRA important for wearable and IoT device designs?
The 1005 SMT package measures only 1.0 mm × 0.5 mm with a 0.2 mm profile height, allowing the LNJ647W8CRA to be placed in extremely confined PCB areas typical of smartwatches, fitness trackers, and IoT sensor nodes. This footprint is 75% smaller than a standard 3528 LED, freeing 4 mm² of PCB space per indicator, which is significant when fitting 10 or more LEDs into a 15 mm × 15 mm board area.
How should a designer calculate the current-limiting resistor for LNJ647W8CRA driven from a 3.3 V microcontroller GPIO?
With a typical forward voltage of approximately 3.0 V to 3.3 V and a target drive current of 5 mA, the series resistor value is calculated as (Vsupply − Vf) / If = (3.3 V − 3.0 V) / 0.005 A = 60 Ω. Using a standard 68 Ω resistor limits current to approximately 4.4 mA, safely below the 10 mA maximum and providing visible green illumination suitable for indoor status indicators.
How does the 520 nm emission of LNJ647W8CRA compare to pure green LEDs for color-coding panel indicators?
At 520 nm, the LNJ647W8CRA falls in the blue-green transition zone, distinguishable from pure green LEDs centered around 540 nm to 560 nm. Human color perception peaks at 555 nm, so the 520 nm emission appears slightly cooler or teal compared to a 545 nm green. For multi-color panel designs requiring distinct green and blue-green status channels, the 20 nm to 40 nm wavelength difference provides sufficient perceptual separation for 2-color indicator systems.
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