The 1206VCA940R8 is a compact 940nm single-channel 1206 SMD VCSEL designed for surface-mount optical integration. It features a typical central wavelength of 940nm, a typical operating current of 10mA, a typical forward voltage of 1.8V, and a specified peak power of 7.2mW in the product summary. The device also provides high reliability, wavelength stabilization, Pb-free construction, RoHS compliance and Moisture Sensitivity Level L3.
- Description
Description
940nm 1206 SMD VCSEL Overview
The 1206VCA940R8 is a single-channel 940nm VCSEL (Vertical-Cavity Surface-Emitting Laser) supplied in a compact 1206 surface-mount package. The product summary specifies a wavelength of 940nm, peak power of 7.2mW, and a VCSEL chip dimension of 160 × 160 × 100 µm.
The device is designed for compact surface-mount integration and features high reliability, wavelength stabilization, Pb-free construction and EU RoHS compliance. The datasheet also specifies Moisture Sensitivity Level L3 and a light emission angle of 10°.
Key Features
- 1206 SMD VCSEL package
- Single-channel VCSEL
- Typical central wavelength: 940nm
- High reliability
- Wavelength stabilization
- Light emission angle: 10°
- Typical operating current: 10mA
- Typical forward voltage: 1.8V
- Typical power conversion efficiency: 40%
- Pb-free product compliant with EU RoHS requirements
- Moisture proof grade: L3
Product Specifications
| Parameter | Specification |
|---|---|
| Model | 1206VCA940R8 |
| Product Type | 1206 SMD VCSEL |
| Channel | Single Channel |
| Wavelength | 940 nm |
| Specified Peak Power | 7.2 mW |
| VCSEL Chip Dimension | 160 × 160 × 100 µm |
| Typical Operating Current | 10 mA |
| Typical Forward Voltage | 1.8 V |
| Typical Power Conversion Efficiency | 40% |
| Light Emission Angle | 10° |
| Moisture Proof Grade | L3 |
| Compliance | Pb-free / RoHS compliant |
Detailed Electrical and Optical Characteristics
The following detailed specifications are provided at Ta = 25°C. The datasheet notes that certain measurements are tested at the suggested bias current with the backside temperature of the chip at 50°C under CW operation.
| Category | Parameter | Symbol | Unit | Min. | Typical | Max. | Notes |
|---|---|---|---|---|---|---|---|
| Electrical | Threshold Current | Ith | mA | — | 1.35 | 2 | #1, #2 |
| Electrical | Operating Current | Io | mA | — | 10 | — | — |
| Electrical | Forward Voltage | Vo | V | 1.6 | 1.8 | 2.2 | #1 |
| Optical | Central Wavelength | λp | nm | 934 | 940 | 946 | #1 |
| Optical | Divergence | Θ | ° | 20 | 23 | 26 | Full width, 1/e², #1 |
| Optical | Optical Power | Po | W* | 6.5 | 7.2 | 8.5 | Peak, #1 |
| Optical | Dead Emitters | Nde | ea | — | — | 0 | #1, #3 |
| Opti-electrical | Slope Efficiency | ηSE | mW/mA | 0.75 | 0.83 | — | #1, #2 |
| Opti-electrical | Power Conversion Efficiency | PCE | % | 36 | 40 | — | #1 |
Detailed Specification Notes
- #1: Tested at the suggested bias current, with the temperature on the backside of the chip at 50°C under CW operation.
- #2: Linear regression between 3mA and 6mA.
- #3: Dead emitters are defined as emitters with output power below 50% of the average of all emitters in the unit.
Typical LIV Performance at 50°C
The LIV performance chart in the datasheet shows the relationship between drive current, optical power and forward voltage at 50°C. Optical power increases with current while the corresponding forward voltage rises gradually across the plotted operating range.
Typical Power Conversion Efficiency
The datasheet provides a typical PCE performance curve at 50°C. The detailed specifications list a typical power conversion efficiency of 40% under the stated test conditions.
Optical Divergence and Emission Angle
The datasheet lists a light emission angle of 10° in the Features section. In the detailed optical specifications, divergence is separately specified as 20° minimum, 23° typical and 26° maximum using the full-width 1/e² definition. These values are retained separately because they are presented under different definitions in the original datasheet.
1206 SMD Package Dimensions
The device uses a compact 1206 surface-mount package. According to the external dimension drawing, terminal 1 is the cathode and terminal 2 is the anode. The drawing also provides the recommended soldering pad dimensions for PCB integration.
| Package Parameter | Dimension |
|---|---|
| Package Length | 3.2 ± 0.2 mm |
| Overall Height | 2.0 ± 0.2 mm |
| Base Height | 0.5 ± 0.1 mm |
| Terminal 1 | Cathode |
| Terminal 2 | Anode |
Absolute Maximum Ratings
The following values are specified as absolute maximum ratings and should not be interpreted as recommended continuous operating conditions.
| Parameter | Rating |
|---|---|
| Continuous Forward Current | 15 mA |
| Maximum Reverse Bias Voltage | 5 V |
| ESD Threshold (Human Body Model) | Not specified in the datasheet table |
| Storage Temperature Range | -40°C to +125°C |
| Substrate Temperature During Operation | -20°C to +85°C |
Tape and Reel Packaging
The 1206VCA940R8 is supplied in tape-and-reel packaging with 1500 pieces per reel. The original reel and carrier tape drawings are shown below for automated surface-mount assembly reference.
Storage and Handling
The datasheet specifies moisture-controlled storage requirements before and after opening the package. Following these conditions helps protect the device before mounting and soldering.
- Do not open the moisture-proof bag before the devices are ready for use.
- Before opening, store at 30°C or below and 60% RH or below.
- The maximum storage period before opening the package is 1 year.
- After opening, keep the devices at 30°C / 35% RH or below.
- Use the devices within 7 days after opening.
- If baking is required before mounting, the specified condition is 60 ± 5°C for 12 hours.
Soldering Precautions
Proper soldering and electrical handling are important for maintaining device reliability. The datasheet specifies precautions for current limiting, transient voltage protection and reflow soldering.
- Use a current-limiting resistor so that the device operates within the rated current.
- Avoid instantaneous high voltage during circuit turn-on and turn-off.
- Reflow soldering should not be performed more than two times.
- Do not apply mechanical stress to the device during soldering.
- Do not warp the circuit board before it has returned to normal ambient conditions after soldering.
Request a Quote
Contact LumiLaserChip for pricing, sample availability, lead time and technical information for the 1206VCA940R8 940nm 1206 SMD VCSEL. When requesting a quotation, please provide your required quantity, application and relevant optical or electrical requirements so that we can evaluate the appropriate supply option for your project.
