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SFH 2430-Z

SFH 2430-Z

ams-OSRAM USA INC.
Photodiode 570nm 200µs 120° 2-SMD, Gull Wing
Active38,224 in stock
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Overview

The SFH 2430-Z is a high-linearity PIN photodiode specifically designed for ambient light sensing and health monitoring. Its spectral sensitivity is tailored to match the human eye (V-lambda), providing accurate brightness measurement across a range of 400nm to 900nm. The device is housed in a compact DIL SMT plastic package suitable for high-density PCB layouts.

Why Choose This Part

It features a very low dark current of 100pA and a spectral sensitivity peak at 570nm, closely mimicking human visual perception. The PIN diode construction ensures high linearity and a fast response time for precise optical measurements. Additionally, it offers a wide 120-degree viewing angle and stable performance across an operating temperature range of -40C to 100C.

Applications

Ambient Light Sensing
Adjusting display backlight brightness in mobile devices and industrial panels based on environmental lighting.
Heart Rate Monitoring
Detecting volumetric changes in blood flow through PPG (photoplethysmogram) sensing in wearable devices.
Pulse Oximetry
Measuring blood oxygen saturation levels in medical grade or fitness-oriented wearables.
Proximity Sensing
Used as the receiver component in infrared proximity detection systems for smart home or consumer electronics.

Key Specifications

Diode Type PIN
Wavelength 570nm
Active Area 7.02mm²
Mounting Type Surface Mount
Response Time 200us
Viewing Angle 120deg
Package / Case 2-SMD, Gull Wing
Spectral Range 400nm ~ 900nm
Current - Dark (Typ) 100pA
Operating Temperature -40degC ~ 100degC
Voltage - DC Reverse (Vr) (Max) 6 V

Getting Started

To integrate this photodiode, use a transimpedance amplifier (TIA) circuit to convert the nano-ampere level photocurrent into a measurable voltage for an ADC. Ensure the PCB layout minimizes leakage currents near the high-impedance nodes, and consider using a guard ring around the signal traces. For initial testing, the part can be hand-soldered onto a 2-SMD breakout board for use with an oscilloscope or MCU development kit.

Also Consider

TEMD5110X01 Vishay Semiconductor - A similar high-speed PIN photodiode with a 7.5mm2 active area and human eye spectral matching.
BPW34S ams-OSRAM USA INC. - A broader spectral range photodiode (400nm to 1100nm) for applications requiring higher infrared sensitivity.
VEML6030 Vishay Semiconductor - A digital-output I2C ambient light sensor that integrates the photodiode and ADC into a single package for easier system integration.