MicroRA 2017-09-07T11:37:14+00:00

MicroRA Family

Red-Enhanced Silicon Photomultipliers

The MicroRA sensors are a new range of Silicon Photomultipliers (SiPM) providing increased sensitivity into the red and NIR region of the electromagnetic spectrum. MicroRA sensors are the first release from the R-Series family of red-enhanced SiPM sensors that feature high responsivity, fast signal response and a low temperature coefficient of operating voltage, all achieved at a low bias voltage. The sensor is packaged in a compact and robust MLP (molded lead frame) package that is suitable for re ow solder processes. Both the sensor and the package are designed for volume production with the product delivered on tape and reel.

Key Features

Due to high gain and detection efficiency.

Optimized quench resistors and our unique ‘fast output’

Low cost for high volume applications and reflow solder requirement.

SiPM sensors are an improvement over avalanche photodiodes (APD) and PIN diodes due to their high gain and single photon sensitivity. This enables the detection of low re ectivity targets at very long distance in LiDAR applications. Unlike the similarly-operated SPAD that can only detect single photons, the SiPM overcomes this limitation by incorporating a ‘microcell’ structure that allows for multi-photon detection with a high dynamic range.

Detailed product information can be found in the MicroRA datasheet. It is strongly recommended that those new to SiPM sensors consult the Introduction to Silicon Photomultipliers Tech Note.

If you are unsure as to whether the MicroRA is the best SiPM product line for your application, please take a look at our product selection guide.

  • Specifically designed for LIDAR and 3D ranging applications

  • High responsivity of >100 kA/W @905nm due to the combination of high gain and detection efficiency

  • Ultra-fast rise times and pulse widths from SensL’s unique ‘fast output’ terminal

  • Available in a low-cost, high volume, reflow solder compatible MLP package

  • 1mm sensor size
  • Evaluation board with either SMA connectors or pins are available

MicroRA Product Images

Specification Summary

Please refer to the MicroRA Datasheet for a complete list of features and technical details.

Parameter100101002010035UnitsNotes
Sensor size111mm
Microcell size102035um
Number of microcells42961590620
Typical operating voltage544440V
PDE @ 905 nm3.75.36.3%At maximum overvoltage.
Responsivity @ 905 nm70200280kA/WAt maximum overvoltage.
Gain0.4x1060.9x1061.6x106
Microcell recharge time constant132168ns

MicroRA eStore

Welcome to the SensL eStore.  Here you can quickly purchase sample quantities of all SiPM sensors including the R-Series.  If you require a formal quote or have a high volume requirement please email our sales team.

Please visit the main eStore for all of our products.

Part Number Ordering Information

Part NumberItem DescriptionSensor Size in mm (XX)Cell Size (YYY)Package / Board Type
MicroRA-10010-MLPRed-enhanced SiPM in a surface mount package110MLP
MicroRA-10020-MLPRed-enhanced SiPM in a surface mount package120MLP
MicroRA-10035-MLPRed-enhanced SiPM in a surface mount package135MLP
MicroRA-SMA-10010MicroRA-10010-MLP mounted onto a PCB with SMA Connectors for bias and signal (fast and standard)110SMA
MicroRA-SMA-10020MicroRA-10020-MLP mounted onto a PCB with SMA Connectors for bias and signal (fast and standard)120SMA
MicroRA-SMA-10035MicroRA-10035-MLP mounted onto a PCB with SMA Connectors for bias and signal (fast and standard)135SMA
MicroRA-SMTPA-10010MicroRA-10010-MLP pin adapter board110SMTPA
MicroRA-SMTPA-10020MicroRA-10020-MLP pin adapter board120SMTPA
MicroRA-SMTPA-10035MicroRA-10035-MLP pin adapter board135SMTPA