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SFH 320-3/4-Z

SFH 320-3/4-Z

ams-OSRAM USA INC.
Phototransistors 980nm Top View 2-PLCC
Active12,255 in stock
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Overview

The SFH 320-3/4-Z is a silicon NPN phototransistor housed in a compact SMT PLCC-2 package, optimized for the near-infrared spectrum with a peak sensitivity at 980nm. It features a wide viewing angle of 120 degrees and is designed for high-volume automated assembly in light-controlled switching and monitoring circuits. This component provides a collector-emitter breakdown voltage of 35V and operates reliably across a wide temperature range from -40C to 100C.

Why Choose This Part

The PLCC-2 package provides a standardized surface-mount footprint that is compatible with infrared reflow soldering and automatic pick-and-place equipment. It offers a very low dark current of 50nA (max), ensuring high signal-to-noise ratios in low-light applications. The 120-degree wide viewing angle allows for flexible mechanical alignment between the emitter and this sensor.

Applications

Industrial Optocouplers
Used in high-isolation signal transmission where physical space is limited on the PCB.
Infrared Remote Receivers
Acts as the sensing element for 980nm IR control signals in consumer and industrial equipment.
Object Detection and Counters
Utilized in light barrier systems to detect the presence or movement of objects in production lines.
Ambient Light Monitoring
Integrated into control systems to trigger actions based on threshold changes in infrared light levels.

Key Specifications

Wavelength 980nm
Orientation Top View
Power - Max 165 mW
Mounting Type Surface Mount
Viewing Angle 120deg
Package / Case 2-PLCC
Operating Temperature -40degC ~ 100degC
Current - Dark (Id) (Max) 50 nA
Current - Collector (Ic) (Max) 15 mA
Voltage - Collector Emitter Breakdown (Max) 35 V

Getting Started

To integrate this phototransistor, design a common-emitter or common-collector circuit with a load resistor selected to match your desired response speed and sensitivity. Ensure the 980nm peak sensitivity aligns with your IR LED source for maximum efficiency. For prototyping, the PLCC-2 footprint can be hand-soldered or mounted on a standard SOT-23/PLCC adapter PCB.

Also Consider

TEMT6200FX01 Vishay Semiconductor - An alternative SMT phototransistor that includes an integrated infrared suppression filter for ambient light rejection.
SFH 320-Z ams OSRAM - The base version of this series if specific binning for the 3/4 gain group is not required for your application.