NIS5021MT1GEVB: +12 Volt Electronic Fuse

The NIS5021MT1GEVB Evaluation Board showcases a cost effective, resettable fuse which can greatly enhance the reliability of a hard drive or other circuit from both catastrophic and shutdown failures. The eFuse is designed to buffer the load device from excessive input voltage which can damage sensitive circuits. It includes an overvoltage clamp circuit that limits the output voltage during transients but does not shut the unit down, thereby allowing the load circuit to continue its operation. The eFuse also includes an internal Undervoltage Lockout Circuit as well as an Internal Charge Pump. The NIS5021MT1EVB evaluation board has many features which make it simple to observe the functionality and performance of NIS5x2x line of eFuses including multiple connectors available for all eFuse pins (VCC, GND, SRC, enable, ILIM, dv/dt), input and output capacitors, a pushbutton switch and a MOSFET to connect the enable pin to GND or float as needed, green and yellow LEDs to indicate whether the eFuse enable pin voltage is high (device enabled)/low (device disabled)/mid (thermal shutdown), 5 current limit resistor options available directly on the board (20, 25, 30, 35, 40 Ω), 4 load resistor options (200 Ω each) on the board, a jumper to short circuit the load, kelvin or direct sensing options via jumpers between pin 6 and 7 for NIS5x2x.
Features and Applications


  • 14 mΩ, 24 mΩ & 44 mΩ Typical RDSON Options
  • Tristate Enable
  • Overcurrent Protection
  • Thermally Protected
  • Integrated Soft-Start Circuit
  • Fast Response Overvoltage Clamp Circuit


  • Servers
  • Solid State Drives
  • Hard Drives
  • Internal Charge Pump
Evaluation/Development Tool Information
Product Status Compliance Short Description Parts Used Action
NIS5021MT1GEVB Active
+12 Volt Electronic Fuse 2N7002KT1G BAS16HT1G
Technical Documents
Type Document Title Document ID/Size Rev
Eval Board: Schematic NIS5021MT1GEVB Schematic NIS5021MT1GEVB_SCHEMATIC - 56 KB  1 
Eval Board: Test Procedure NIS5021MT1GEVB Test Procedure NIS5021MT1GEVB_TEST_PROCEDURE - 96 KB  1 
Eval Board: BOM NIS5021MT1GEVB Bill of Materials (ROHS Compliant) NIS5021MT1GEVB_BOM_ROHS - 129 KB  1 
Eval Board: Gerber NIS5021MT1GEVB Gerber Layout Files (Zip Format) NIS5021MT1GEVB_GERBER - 86 KB  0 
Eval Board: Manual NIS5021MT1GEVB Evaluation Board Manual NIS5021MT1GEVB_Evaluation_Board Manual - 681 KB  0 
Video +12 Volt Electronic Fuse: NIS5021MT1GEVB WVD17659/D   
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