text.skipToContent text.skipToNavigation

Manufacturer Part #


FSCQ0765 Series 7 A 650 V Through Hole Power Switch - TO-220F-5

Mfr. Name: ON Semiconductor
Standard Pkg:
Product Variant Information section
Date Code: 2008
Product Specification Section
Technical Attributes
Attributes Table
Supply Current-Max: 6mA
Supply Voltage-Max: 20V
Frequency-Max: 22kHz
Topology: Flyback
Power Dissipation: 45W
Duty Cycle-Min: 0%
Duty Cycle-Max: 98%
Operating Temp Range: -25°C to +85°C
Storage Temperature Range: -55°C to +150°C
Thermal Resistance: 2.6°C/W
Package Style:  TO-220F-5
Mounting Method: Flange Mount
Features & Applications
The FSCQ0765RTYDTU is a Quasi-Resonant Converter (QRC) typically shows lower EMI and higher power conversion efficiency compared to conventional hard-switched converter with a fixed switching frequency. Therefore, a QRC is well suited for noise-sensitive applications, such as color TV and audio. Each product in the FSCQ-Series contains an integrated Pulse Width Modulation (PWM) controller and a SenseFET, and is specifically designed for quasiresonant off-line Switch Mode Power Supplies (SMPS) with minimal external components.

The PWM controller includes an integrated fixed frequency oscillator, under voltage lockout, leading edge blanking (LEB), optimized gate driver, internal soft start, temperature-compensated precise current sources for a loop compensation, and self protection circuitry. Compared with a discrete MOSFET and PWM controller solution, the FSCQ-Series can reduce total cost, component count, size, and weight, while simultaneously increasing efficiency, productivity, and system reliability. These devices provide a basic platform that is well suited for cost-effective designs of quasi-resonant switching flyback converters.


  • Optimized for Quasi-Resonant Converter (QRC)
  • Advanced Burst-Mode operation for under 1 W standby power consumption
  • Pulse by Pulse Current Limit
  • Over load protection (OLP) - Auto restart
  • Over voltage protection (OVP) - Auto restart
  • Abnormal Over Current Protection (AOCP) - Latch
  • Internal Thermal Shutdown (TSD) - Latch
  • Under Voltage Lock Out (UVLO) with hysteresis
  • Low Startup Current (typical: 25 uA)
  • Internal High Voltage SenseFET
  • Built-in Soft Start (20 ms)
  • Extended Quasi-resonant Switching for Wide Load Range


  • TBA
Pricing Section
Minimum Order:
Multiple Of:
Factory Stock:Factory Stock:
Factory Lead Time:
Web Price
Product Variant Information section