850nm
850nm 5mW / 10mW / 20mW VCSEL SMD Series
850nm VCSEL SMD series with 5mW, 10mW and 20mW 2835 packages for SMT assembly, NIR sensing, machine vision and optical integration.
Specifications
- Product Type
- VCSEL SMD
- Wavelength
- 850nm typ.; 840–860nm
- Optical Output Power
- 5mW / 10mW / 20mW
- Transverse Mode
- Multi-mode VCSEL
- Operating Mode
- QCW / Pulse
- Beam Divergence
- 20° / 21° typ.
- SMD Package Options
- 2835
1. 850nm VCSEL SMD Series for Compact PCB Integration
The 850nm 5mW–20mW VCSEL SMD Series includes three near-infrared VCSEL products in a compact 2835 surface-mount package.
Available optical-output options include:
All three products use a compact 850nm 2835 VCSEL package designed for surface-mount PCB integration.
The products share the same nominal 850nm wavelength, 2835 package format and 7mil × 7mil internal VCSEL chip size. They provide different optical-output and drive-current levels for sensing, machine vision, industrial optical detection and compact PCB-mounted NIR source development.
The 2835 SMD package supports automated PCB placement and reflow-soldering processes. Compared with an unpackaged VCSEL bare die, the packaged format reduces customer-side die attachment and wire-bonding work.
The series is intended for pulsed or QCW operation. Each optical-output value must be interpreted together with the corresponding current, pulse width and duty cycle.
Primary development directions include:
- Near-infrared sensing
- Machine-vision source development
- Industrial optical detection
- Compact PCB-mounted NIR sources
- Engineering and research prototypes
2. Available 850nm 2835 VCSEL Products
The three available products are compared below.
Product | Package | Optical Output | Forward Current | Pulse Condition | Beam Divergence |
|---|---|---|---|---|---|
2835 SMD | 5mW min. / 6mW typ. | 7mA | 0.5ms, 1% duty cycle, 25°C | 20° typ., D86 | |
2835 SMD | 8mW min. / 10mW typ. | 15mA | 0.5ms, 10% duty cycle | 21° typ., D86 | |
2835 SMD | 20mW min. / 23mW typ. | 28mA | 0.5ms, 10% duty cycle | 21° typ., D86 |
Although the three products use the same 2835 package, they should not be treated as electrically interchangeable.
The driver circuit must be selected according to the rated current, pulse width, duty cycle and required optical output of the selected product.
5mW Version
The 5mW version provides 5mW minimum and 6mW typical optical output at a forward current of 7mA.
It is specified at 25°C under QCW operation with a pulse width of 0.5ms and a 1% duty cycle. Its typical D86 beam divergence is 20°.
This version is suitable for projects requiring low operating current, compact PCB integration and moderate near-infrared output.
10mW Version
The 10mW version provides 8mW minimum and 10mW typical optical output at a forward current of 15mA.
It is specified under QCW operation with a pulse width of 0.5ms and a 10% duty cycle. Its typical D86 beam divergence is 21°.
This version provides an intermediate output option for compact sensing and optical-detection systems requiring more received optical power than the 5mW version.
20mW Version
The 20mW version provides 20mW minimum and 23mW typical optical output at a forward current of 28mA.
It is specified under QCW operation with a pulse width of 0.5ms and a 10% duty cycle. Its typical D86 beam divergence is 21°.
This version provides the highest optical output in the current 850nm 2835 VCSEL series while retaining the same compact package format.
3. Optical and Electrical Characteristics
The principal optical and electrical characteristics are shown below.
Parameter | 5mW Version | 10mW Version | 20mW Version |
|---|---|---|---|
Peak Wavelength | 850nm typ. | 850nm typ. | 850nm typ. |
Wavelength Range | 840–860nm | 840–860nm | 840–860nm |
Optical Output | 5mW min. / 6mW typ. | 8mW min. / 10mW typ. | 20mW min. / 23mW typ. |
Forward Current | 7mA | 15mA | 28mA |
Threshold Current | 0.7mA min. / 1.3mA typ. / 2mA max. | 5.5mA typ. | 5.5mA typ. |
Forward Voltage | 1.8V min. / 2.0V typ. / 2.2V max. | 2.0V typ. | 2.0V typ. |
Series Resistance | Not specified | 50Ω typ. | 50Ω typ. |
Slope Efficiency | Not specified | 1W/A typ. | 1W/A typ. |
Wavelength Shift | Not specified | 0.047nm/°C typ. | 0.047nm/°C typ. |
Beam Divergence | 20° typ., D86 | 21° typ., D86 | 21° typ., D86 |
Pulse Width | 0.5ms | 0.5ms | 0.5ms |
Duty Cycle | 1% | 10% | 10% |
The optical-output ratings apply only under the specified operating conditions.
Increasing the drive current, pulse width or duty cycle beyond the specified condition can increase junction temperature and may affect optical output, wavelength, electrical performance and reliability.
Beam divergence is specified using the D86 definition, based on the angular range containing approximately 86% of the measured optical power.
The listed D86 values should not be interpreted as FWHM beam-divergence values.
4. 2835 Package and SMT Integration
All three products use the same compact 2835 surface-mount package.
Package Parameter | Specification |
|---|---|
Package Type | 2835 SMD |
Package Length | 3.5mm |
Package Width | 2.8mm |
Package Height | Approximately 0.68mm |
Internal VCSEL Chip Size | 7mil × 7mil |
Pin 1 | Anode |
Pin 2 | Cathode |
Dimensional Tolerance | ±0.1mm unless otherwise specified |
Standard Reel Quantity | 4,000 pcs / reel |
The surface-mount VCSEL package supports automated pick-and-place assembly and PCB-level reflow soldering.
PCB and module design should consider:
- Correct anode and cathode orientation
- Recommended solder-pad dimensions
- Drive-current routing
- Current limiting
- Pulse-control accuracy
- Package clearance
- Optical opening above the VCSEL
- ESD protection
- PCB thermal structure
- External lens or optical-window placement
The top optical surface should not be pressed, scratched or contaminated during handling and assembly.
The products are ESD-sensitive semiconductor devices. Appropriate electrostatic protection should be used during storage, placement, soldering, electrical testing and module assembly.
Reflow-soldering conditions and handling precautions should follow the corresponding product datasheet and the customer’s validated manufacturing process.
5. Product Selection and Application Development
The appropriate 850nm VCSEL SMD should be selected according to the required received optical signal, working distance, detector sensitivity, pulse condition and available drive current.
Select the 5mW Version When:
- Low operating current is important
- The optical path is relatively short
- Receiver sensitivity is sufficient
- A lower duty cycle is required
- Initial sensing or optical-source evaluation is being performed
Select the 10mW Version When:
- More received optical power is required than the 5mW version provides
- A moderate drive current is acceptable
- The system uses a 0.5ms pulse width and 10% duty cycle
- A balanced output and current level is preferred
Select the 20mW Version When:
- The highest output in the current 2835 series is required
- The optical path or working distance requires stronger pulsed output
- The driver can supply a controlled 28mA pulse current
- The package size must remain consistent with the lower-power versions
Typical development directions include:
- Near-infrared sensing
- Proximity and presence detection
- Machine-vision source development
- Industrial optical detection
- Compact active NIR illumination
- PCB-mounted optical-source modules
- Engineering and research systems
For sensing and machine-vision projects, product selection should consider receiver response, working distance, illuminated area, pulse synchronization, external optics and required field of view.
Customers requiring unpackaged chips, alternative output levels or custom package development can review the 850nm VCSEL Bare Die Series.
For wavelength, optical output, package, lens, diffuser or optical-module requirements, submit a Custom Development & ODM request.
6. Evaluation Kit and Documentation Support
The 850nm VCSEL SMD Series can be evaluated for PCB assembly, driver development, pulse-control verification, optical testing and initial module integration.
The Evaluation Kit includes:
- 10 pcs / KIT
- One selected 5mW, 10mW or 20mW model per kit
- Corresponding product datasheet
- Corresponding package-dimension file
- International shipping quoted according to destination
Available evaluation options include:
- 850nm 5mW 2835 VCSEL SMD
- 850nm 10mW 2835 VCSEL SMD
- 850nm 20mW 2835 VCSEL SMD
The following requirements can be discussed according to the project:
- Optical-output selection
- Pulse width and duty cycle
- Drive-current requirements
- Power-bin selection
- PCB and solder-pad integration
- Alternative SMD package development
- External lens integration
- Diffuser and beam-shaping integration
- Custom optical modules
- Volume-supply requirements
For component-level project evaluation, an Initial Product Report covering the Laser Diode Series and VCSEL Laser Diode Chip Series has been filed with the U.S. FDA CDRH. This filing supports technical documentation and product evaluation.
For applicable products, CE, EMC, EN 60825, LVD, RoHS, REACH and halogen-free certification and compliance documents are available.
Documentation depends on the corresponding product model and does not represent certification of the customer’s finished device.
7. Frequently Asked Questions
FAQ 1. What power options are available in the 850nm VCSEL SMD Series?
The series includes 5mW, 10mW and 20mW nominal optical-output options in the same 2835 SMD package.
The 5mW version provides 5mW minimum and 6mW typical output at 7mA.
The 10mW version provides 8mW minimum and 10mW typical output at 15mA.
The 20mW version provides 20mW minimum and 23mW typical output at 28mA.
Each value must be interpreted together with the corresponding pulse width and duty cycle.
FAQ 2. Are the 5mW, 10mW and 20mW products electrically interchangeable?
No.
Although the three products use the same 2835 package, they require different drive currents and duty-cycle conditions.
The 5mW product is specified at 7mA with a 1% duty cycle. The 10mW and 20mW products are specified at 15mA and 28mA respectively with a 10% duty cycle.
The driver circuit should be selected and validated for the specific product.
FAQ 3. Can the 850nm VCSEL SMD products be assembled using standard SMT equipment?
The 2835 package is designed for surface-mount PCB integration and is supplied in reels of 4,000 pieces.
Automated pick-and-place and reflow-soldering processes can be used, but the optical surface must not be pressed or contaminated.
PCB pad layout, polarity, reflow profile, current limiting and ESD protection should follow the corresponding product datasheet and the customer’s validated assembly process.