text.skipToContent text.skipToNavigation

Manufacturer Part #


FSFR2100 Series 25 V 0.38 Ohm Through Hole Power Switches - SIP-9

ECAD Model:
Mfr. Name: ON Semiconductor
Standard Pkg:
Product Variant Information section
Date Code: 2109
Product Specification Section
Technical Attributes
Attributes Table
Configuration: High Side / Low Side
Input Voltage: 9.6V to 25V
No of Elements: Single
On-state Resistance-Max: 0.38Ω
Rated Current-Max: 11A
Type: Power Switch
Package Style:  SIP-9
Mounting Method: Through Hole
Features & Applications

The FSFR2100 is a highly integrated power switch designed for high-efficiency half-bridge resonant converters. Offering everything necessary to build a reliable and robust resonant converter, the FSFR2100 simplifies designs and improves productivity, while improving performance. The FSFR2100 combines power MOSFETs with fast-recovery type body diodes, a highside gate-drive circuit, an accurate current controlled oscillator, frequency limit circuit, soft-start, and built-in protection functions. The high-side gate-drive circuit has a common-mode noise cancellation capability, which guarantees stable operation with excellent noise immunity.

The fast-recovery body diode of the MOSFETs improves reliability against abnormal operation conditions, while minimizing the effect of the reverse recovery. Using the zero-voltage-switching (ZVS) technique dramatically reduces the switching losses and efficiency is significantly improved. The ZVS also reduces the switching noise noticeably, which allows a small-sized Electromagnetic Interference (EMI) filter.


  • Variable Frequency Control with 50% Duty Cycle for Half-Bridge Resonant Converter Topology
  • High Efficiency through Zero Voltage Switching (ZVS)
  • Internal SuperFET™s with Fast-Recovery Type Body Diode (trr=120ns)
  • Fixed Dead Time (350ns) Optimized for MOSFETs
  • Up to 300kHz Operating Frequency
  • Pulse Skipping for Frequency Limit (Programmable) at Light-Load Condition
  • Remote On/Off Control Using Control Pin
  • Protection Functions: Over-Voltage Protection (OVP), Over-Load Protection (OLP), Over-Current
  • Protection (OCP), Abnormal Over-Current Protection (AOCP), Internal Thermal Shutdown (TSD)


  • PDP and LCD TVs
  • Desktop PCs and Servers
  • Adapters
  • Telecom Power Supplies
  • Audio Power Supplies

To learn more about Power Switches Family click HERE

Pricing Section
Global Stock:
Germany (Online Only):
Factory Stock:Factory Stock:
Factory Lead Time:
52 Weeks
Minimum Order:
Multiple Of:
tariff icon
Tariff charges may apply if shipping to the United States. An estimate of tariff charges will be calculated at checkout.
Web Price
Product Variant Information section