Dongguan Ampfort Electronics Co., Ltd.
                                                                                                           
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Excelitas VTT9814FH Phototransistor Light Sensor 550nm Peak 10V Operating Voltage ROHS Compliant

Price Negotiable
Price: 0.18~0.25USD/PC
MOQ: 1000PCS
Delivery Time: 10 workdays
Brand: AMPFORT
Product Description
Excelitas VTT9814FH Phototransistor Light Sensor
Product Overview

The Excelitas VTT9814FH is a high-performance ambient light sensor designed as a direct replacement for CdS LDRs. This ROHS-compliant phototransistor features human-eye spectral response and excellent temperature stability for precise light detection applications.

Key Applications
  • Background light adjustment for displays (TV, PDA, cameras, LCD/LED, mobile phones)
  • Lighting control equipment and toy automation
  • Street light switching and dusk/dawn control systems
  • Automotive headlight dimming and contrast control
Technical Features
  • Special filter epoxy encapsulation with human-eye spectral response (550nm peak)
  • Linear output with light intensity changes
  • Excellent temperature stability across -30°C to +85°C range
  • Low dark current (0.2nA max at 25°C)
  • Visible light response with IR-blocking capability
  • ROHS compliant, lead-free, and cadmium-free construction
Structure Diagram
Excelitas VTT9814FH phototransistor structure diagram showing component layout and pin configuration
Operating Parameters
Parameter Symbol Value Unit
Working Voltage Vdd 10 V
Operating Temperature T amb -30 to +85 °C
Storage Temperature T stg -40 to +85 °C
Welding Temperature T sd 260 °C
Photoelectric Characteristics
Parameter Symbol Test Condition Min Typ Max Unit
Wavelength Peak λp / -- 550 -- nm
Light Current I L(1) Vcc=5V Ev=10Lux 3 5 7 μA
Light Current I L(2) Vcc=5V Ev=30Lux 9 15 21 μA
Light Current I L(3) Vcc=5V Ev=100Lux 30 50 70 μA
Dark Current I D Vcc=5,Ev=0Lux 25°C -- -- 0.2 nA
Technical Documentation
Application Notes

Important Usage Guidelines:

  • Do not exceed product specification limits during operation
  • Application circuits are for reference only - adjust parameters based on specific requirements
  • Control welding temperature and time within rated ranges (260°C max for 5 seconds)
  • Avoid external force on pins during and after welding process
  • Product meets ROHS environmental requirements
  • Avoid surface damage, contamination, and excessive moisture exposure
  • Standard packaging: 1,000 pieces per unit

Get in Touch

Have questions about our products or want to discuss a custom order? Our team is ready to help you.

Company Dongguan Ampfort Electronics Co., Ltd.
Location Floor 5,Changlong Industrial Building,No.6,Jiangnan Road,Jingshan,Chashan Town,Dongguan 523323,China
Contact Person Annie Fang

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