ElFys SM322
Photodetector Datasheet


Product Description and Key Features

    ElFys SM series photodiode products consist of ElFys patented Black Silicon Induced Junction Technol- ogy. Product patent information can be found at ElFys SM series photodiode products provide superior performance of photosensitivity in visible and near infrared spectrum. The product is especially suitable for health monitoring applications in weara- ble devices. The high sensitivity of the product offers more output photocurrent and improves the en- ergy efficiency of PPG (photoplethysmography) module. Together with its compact packaging and high fill factor of photosensitive area, it facilitates innovative wearable products design.

 

Key feature:                                 Enhanced photosensitivity to Green, Red and NIR wavelength
Key applications:                         HRM, SpO2 for wearables

 

 

Part number

Photosensitive area (mm2)

Packaging

Outline dimensions (mm)

Reverse Voltage (V) Max.

Operation tem- perature oC

 

SM322

3.22

PCB, moulded optical epoxy

3.2 x 2.0 x 0.6

6

 

-40…+85

 Values of Electrical and Optical Performance

     

Part number

Spectral response range

Peak response wave- length, λp

Photosensitivity

Dark current @ VR=10mV,

Mx.

Capacitance @

VR=0V,

f=100kHz, Typ.

Noise equivalent power NEP @ λp Typ.

λp

Typ.

540n

m Typ.

630

nm Typ.

940

nm Typ.

nm

nm

A/W

A/W

A/W

A/W

pA

pF

W/√Hz

SM322

400-1100

970

0.71

0.40

0.47

0.70

40

60

9x10-15

Note: All data are specified at typical ambient temperature (25°C) and under normal working condi- tions.


Spectral Response (Typical)





Dark current and capacitance vs Reverse bias (Typical)





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